Assisted Evolution
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Assisted Evolution
Assisted evolution is a broad family of conservation approaches intended to increase the ability of species and populations to survive environmental change by deliberately influencing evolutionary, genetic or physiological processes. Rather than relying entirely on natural adaptation, conservationists may identify resilient individuals, selectively breed them, move adaptive genetic variation between populations, manipulate symbiotic organisms, relocate populations, preserve genetic material or use genomic information to guide management.
The growing interest in assisted evolution reflects a fundamental problem facing modern conservation. Climate change, habitat alteration, disease, ocean warming and other pressures may be occurring faster than some species can adapt or migrate naturally. Populations that contain useful genetic variation may still be unable to spread those adaptations rapidly enough to other populations. Small or isolated populations can also lose genetic diversity through inbreeding and genetic drift, further limiting their ability to respond.
Assisted evolution therefore seeks to work with evolutionary processes rather than treating ecosystems as genetically static. The concept encompasses interventions ranging from relatively familiar practices such as selective breeding and translocation to emerging approaches involving experimental evolution of symbionts, microbiome manipulation, genomic prediction and potentially gene editing.
Coral Reefs and the Development of Assisted Evolution
Coral reefs have become one of the most prominent testing grounds for assisted evolution. Increasing ocean temperatures and marine heatwaves can cause mass coral bleaching faster than many reef populations can recover. Research has therefore focused on whether naturally occurring differences in heat tolerance can be identified and deliberately amplified.
Studies have repeatedly found substantial variation in thermal tolerance both among coral populations and among individual colonies living on the same reef. Some of this variation is heritable, creating the possibility that selective breeding could produce offspring better able to survive marine heatwaves.
Experimental breeding programs select parents that display desirable characteristics and cross them under controlled conditions. Their offspring can then be tested for heat tolerance, survival, growth and other traits before being incorporated into restoration programs. Research has demonstrated that selective breeding can increase thermal tolerance, although results also show that the choice of trait used to select parents is critical. A coral that performs well in one rapid heat-stress test will not necessarily produce offspring that perform better during other forms of thermal stress.
This complexity illustrates an important principle of assisted evolution: adaptation rarely depends on a single characteristic. Thermal tolerance may involve many genes together with physiological plasticity, previous environmental exposure, host-symbiont relationships and local environmental conditions.
Coral conservation research therefore increasingly combines conventional restoration with evolutionary information. Instead of simply reproducing large numbers of corals, restoration programs can attempt to maintain genetic diversity while ensuring that populations contain sufficient adaptive variation to withstand future conditions.
Assisted Gene Flow and Adaptive Variation
Assisted gene flow involves deliberately moving individuals, gametes or genetic material among populations so that potentially beneficial genetic variation can spread faster than it would naturally.
Populations living in unusually warm environments, for example, may contain genetic variants associated with greater heat tolerance. Moving some of that variation into populations experiencing cooler conditions today may help prepare those populations for future warming.
In coral systems, researchers have crossed individuals originating from different thermal environments and evaluated whether their offspring display greater heat tolerance. Cryopreservation provides another mechanism for assisted gene flow because stored sperm or other reproductive material can permit crosses between populations separated by considerable distances.
The same principle applies far beyond coral reefs. Forest management increasingly considers whether seeds from warmer or drier populations should be planted in areas expected to develop similar climates. Assisted gene flow can therefore operate without moving an entire species. Managers may instead move genetic variation within the species' existing or anticipated range.
Such interventions require caution. Excessive movement can disrupt local adaptation or introduce genetic combinations poorly suited to local conditions. Consequently, modern approaches increasingly emphasize measured transfers, genetic diversity and monitoring rather than simply replacing local populations with organisms from warmer locations.
Symbionts, Microbiomes and Experimental Evolution
Corals are partnerships between animal hosts and microorganisms, particularly photosynthetic algal symbionts. Their capacity to tolerate heat therefore depends partly on the organisms living within and around them.
Researchers have experimentally evolved coral photosymbionts by maintaining cultures under elevated temperatures for many generations. Some resulting lineages display increased thermal tolerance, and experiments have shown that certain heat-evolved symbionts can improve bleaching resistance when introduced into coral hosts.
These findings broaden assisted evolution beyond the genome of the target species. Conservationists may potentially improve resilience by influencing the evolutionary characteristics of organisms that form part of a host's microbiome or symbiotic community.
Experiments with coral probiotics and microbiome transplantation follow a similar principle. Selected bacterial communities may alter coral metabolism, stress responses, nutrient cycling or disease resistance. Some experimental studies have reported improved survival or reduced bleaching under heat stress.
However, these relationships are highly context dependent. A heat-tolerant symbiont that benefits one coral genotype may not provide the same advantage to another. Adaptations that function in an extreme environment may also perform poorly elsewhere. Long-term ecological effects, stability and scalability remain important areas of research.
Genetic Rescue and Evolutionary Rescue
Genetic rescue addresses another major conservation problem: the loss of genetic diversity in small and isolated populations.
As populations shrink, inbreeding can increase and harmful genetic variants can become more influential. Introducing individuals from another population can restore gene flow, increase heterozygosity and sometimes improve survival or reproductive success.
Several well-known conservation cases demonstrate the potential of this approach. Genetic augmentation has contributed to improved fitness in Florida panthers, mountain pygmy possums, Scandinavian wolves, prairie chickens, bighorn sheep and other populations. These examples show that even relatively small amounts of immigration can sometimes have large demographic effects.
Genetic rescue is not necessarily permanent. The experience of isolated wolf populations illustrates that the benefits of a single immigrant can diminish if the population remains very small and isolated. Long-term success may therefore require continuing population growth, repeated gene flow or habitat measures that reconnect populations.
Evolutionary rescue is a related but broader concept. It occurs when adaptive evolutionary change happens quickly enough to prevent a declining population from going extinct. Assisted evolution can potentially increase the probability of evolutionary rescue by maintaining genetic variation, moving adaptive alleles, reducing inbreeding or creating conditions in which beneficial traits can spread.
Transgenerational plasticity and environmental conditioning may also temporarily increase resilience, potentially buying time for genetic adaptation to occur.
Forests, Seed Sourcing and Climate-Adjusted Provenancing
Forests provide another major arena for evolution-informed conservation. Trees are long-lived organisms, and the climate experienced by a seedling during establishment may differ substantially from the climate it experiences decades later.
Traditional restoration often favored local seed on the assumption that local populations were best adapted to local conditions. Climate change has complicated that assumption. A population ideally adapted to today's climate may become increasingly mismatched with conditions later in the century.
Climate-adjusted provenancing attempts to address this problem by incorporating seed from populations associated with climates resembling those expected in the future. Other approaches combine local seed with material from multiple populations, helping preserve diversity while introducing genetic variation that may become advantageous as conditions change.
Common-garden experiments, provenance trials and long-term forest studies provide important evidence for evaluating these strategies. Research on spruce, pine, oak and other tree species demonstrates that populations frequently differ in drought tolerance, growth, cold hardiness, phenology and other climate-related characteristics.
However, moving trees or seed too far can create new forms of maladaptation. Faster growth may come at the expense of cold tolerance, while seed adapted to warmer conditions may suffer during extreme winter events. Assisted migration therefore requires balancing future climatic suitability against present-day environmental risks.
Assisted Migration and Managed Relocation
Assisted migration, assisted colonization and managed relocation generally refer to deliberate movement of organisms toward areas expected to remain suitable as environmental conditions change.
The strategy may range from moving seed populations relatively short distances within a species' existing distribution to establishing threatened species outside their historical range.
Supporters argue that some species will be unable to disperse rapidly enough to track shifting climates, particularly where habitat fragmentation blocks natural movement. Deliberate relocation could prevent extinction and potentially preserve ecological functions that would otherwise disappear.
Critics emphasize the risks of introducing organisms into ecosystems where they have not historically occurred. A relocated species could become invasive, compete with resident species, introduce pathogens or generate ecological consequences that are difficult to predict.
Research has consequently moved toward structured decision-making. Managers can compare the extinction risk associated with doing nothing against the ecological, genetic, social and economic risks of intervention. Timing also matters: moving a population too early may expose it to unsuitable conditions, whereas waiting too long may allow the source population to collapse.
The debate illustrates a broader transformation in conservation. Climate change increasingly requires managers to consider not only how to preserve historical ecological conditions, but also how ecosystems might function under conditions for which there is no recent historical precedent.
Conservation Genomics
Rapid advances in genomics are making assisted evolution increasingly precise. Researchers can examine thousands or millions of genetic markers across populations and compare them with environmental conditions, physiological traits and future climate projections.
Landscape and seascape genomics can identify populations containing genetic variants associated with temperature, drought, salinity or other environmental pressures. These data can help locate populations that may serve as sources for assisted gene flow or restoration.
Genomic vulnerability and genomic-offset models attempt to estimate how genetically mismatched a population may become as its environment changes. Populations predicted to experience severe future maladaptation may become priorities for intervention, while populations containing potentially useful adaptive variation may warrant especially strong protection.
Genomics can also improve genetic-rescue decisions by helping conservationists select donor populations, detect inbreeding, evaluate adaptive differences and monitor what happens after individuals are moved.
Research nevertheless emphasizes that genomic prediction contains uncertainty. Results can depend on climate projections, sampling design, statistical models and assumptions about which genetic variants actually influence survival. Genomic data are therefore most powerful when combined with common-garden experiments, demographic information, ecological knowledge and long-term monitoring.
Beyond Corals and Forests
The assisted-evolution framework is increasingly being explored across many groups of organisms.
Seagrass restoration research considers genetic diversity, climate-adjusted provenancing, phenotypic plasticity and assisted gene flow. Kelp studies explore whether increasing thermal tolerance could reduce losses under ocean warming. Oyster breeding programs examine resilience to ocean acidification. Salmon breeding has been used to increase resistance to specific physiological deficiencies.
Research on birds has examined whether selective breeding, hybridization or other interventions could improve resistance to climate-driven disease. Adaptive introgression—the movement of beneficial genetic variants between related populations or species through hybridization—is also receiving greater attention as a potential source of climate-adaptive variation.
These examples suggest that assisted evolution is better understood as a conservation framework than as a single technology. Different organisms, threats and ecosystems require different combinations of interventions.
Risks, Trade-Offs and Ethical Questions
Assisted evolution represents a significant philosophical shift in conservation. Traditional approaches often emphasize minimizing human intervention and preserving existing ecological arrangements. Assisted evolution instead accepts that deliberate intervention may sometimes be necessary to maintain biodiversity in rapidly changing environments.
This creates difficult questions about acceptable risk.
Selective breeding could inadvertently reduce genetic diversity if too few parents are used. Assisted gene flow can disrupt local adaptation. Relocated organisms can alter recipient ecosystems. Experimentally evolved symbionts or manipulated microbiomes may behave differently outside controlled conditions. Genetic interventions may also generate effects that become apparent only after several generations.
There are also questions about scale. Producing heat-tolerant organisms experimentally does not automatically mean that billions of organisms can be propagated and deployed across entire ecosystems. Restoration techniques must be logistically feasible and affordable, and benefits must persist after organisms return to natural environments.
Ethical concerns include who has authority to alter evolutionary trajectories, how uncertainty should be handled and whether technological interventions could distract from efforts to address the underlying causes of biodiversity loss.
The evidence collected across assisted-evolution research generally supports careful experimentation, monitoring and adaptive management rather than indiscriminate intervention. Decision frameworks increasingly compare multiple strategies, including the option of taking no action.
Assisted Evolution and Climate Adaptation
One of the central conclusions emerging from this field is that conservation increasingly needs to protect evolutionary capacity as well as existing populations.
Genetic diversity, connectivity, adaptive variation and reproductive potential provide species with options for responding to future environmental change. Conservation strategies that preserve these characteristics can support natural evolution even when direct intervention is unnecessary.
Where natural adaptation is unlikely to occur quickly enough, selective breeding, assisted gene flow, climate-informed seed sourcing, genetic rescue or managed relocation may provide additional options.
These approaches are not substitutes for reducing greenhouse-gas emissions, protecting habitat or addressing pollution and other environmental pressures. Their effectiveness depends partly on whether environmental change remains within ranges that biological adaptation can realistically accommodate. Coral modelling in particular indicates that evolutionary adaptation may improve persistence but can be overwhelmed if warming becomes too rapid or severe.
Assisted evolution should therefore be viewed as one component of a broader conservation strategy that combines habitat protection, ecological restoration, connectivity, emissions reduction, population management and increasingly sophisticated understanding of evolutionary processes.
Conclusion
Assisted evolution marks a transition from conservation focused primarily on preserving existing biological conditions toward conservation that also seeks to preserve and, in some circumstances, accelerate the capacity for change.
Evidence from coral reefs demonstrates that selective breeding, assisted gene flow, experimentally evolved symbionts and microbiome manipulation can influence thermal tolerance. Forest research shows how climate-adjusted provenancing and assisted migration can prepare long-lived species for future environments. Genetic-rescue programs demonstrate that restoring gene flow can substantially improve the fitness of small and inbred populations. Conservation genomics is providing increasingly detailed tools for identifying both vulnerable populations and valuable sources of adaptive variation.
At the same time, the research emphasizes uncertainty. Adaptive traits can involve complex genetic and ecological interactions, interventions can produce trade-offs, relocated organisms can create new risks, and successful experiments may be difficult to deploy at ecosystem scales.
The future of assisted evolution will therefore depend on combining biological innovation with caution, long-term monitoring and structured decision-making. Its central objective is not simply to redesign species, but to give threatened populations greater evolutionary options in environments changing faster than many organisms have historically experienced.
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Assisted Evolution: Core Concepts and Frameworks
1. Assisted evolution of corals and their symbionts enhances recruit heat tolerance but with complex outcomes
| Annika M. Lamb et al. | Science Advances | 1 July 2026
Tests selective breeding and experimentally evolved algal symbionts separately and together, finding improved heat tolerance but also strong context dependence and potential trade-offs.
2. Choice of traits defines the scope for assisted evolution of corals under climate change
| Liam Lachs et al. | Current Biology | 4 May 2026
Examines how the choice of heat-tolerance traits affects selective breeding outcomes and shows that extreme selection may be required to produce corals capable of surviving future heatwaves.
3. Accelerating coral assisted evolution to keep pace with climate change
| Adriana Humanes et al. | Nature Reviews Biodiversity | 30 March 2026
Presents a major roadmap for accelerating assisted-evolution research, assessing whether experimental gains in coral thermal tolerance can keep pace with increasingly severe marine heatwaves.
4. Coral conservation in a warming world must harness evolutionary adaptation
| Madhavi A. Colton et al. | Nature Ecology & Evolution | 16 September 2022
Argues that coral conservation should protect ecological networks and environmental gradients that maintain adaptive variation and allow beneficial alleles to spread.
5. Assessing the potential for demographic restoration and assisted evolution to build climate resilience in coral reefs
| Lukas B. DeFilippo et al. | Ecological Applications | 27 June 2022
Uses eco-evolutionary modelling to compare conventional coral restoration with interventions designed to increase thermal tolerance and accelerate adaptation.
6. An Experimental Framework for Selectively Breeding Corals for Assisted Evolution
| Adriana Humanes et al. | Frontiers in Marine Science | 28 May 2021
Provides a practical framework for selecting broodstock, crossing corals, rearing offspring, maintaining nurseries and monitoring selectively bred colonies after outplanting.
7. Ethics of Assisted Evolution in Marine Conservation
| Karen Filbee-Dexter and Anna Smajdor | Frontiers in Marine Science | 30 January 2019
Examines ethical issues created when conservation moves from protecting existing organisms toward deliberately influencing their evolutionary trajectories.
8. A Research Review of Interventions to Increase the Persistence and Resilience of Coral Reefs
| National Academies of Sciences, Engineering, and Medicine | National Academies Press | 2019
Reviews proposed coral interventions including assisted gene flow, selective breeding, stress conditioning, managed relocation, symbiont manipulation and other emerging technologies.
9. A Decision Framework for Interventions to Increase the Persistence and Resilience of Coral Reefs
| National Academies of Sciences, Engineering, and Medicine | National Academies Press | 2019
Develops a structured framework for evaluating whether, where and under what circumstances novel coral interventions should be deployed.
10. Building coral reef resilience through assisted evolution
Foundational paper proposing assisted evolution for coral conservation through stress conditioning, selective breeding, assisted gene flow and manipulation of coral-associated microorganisms.
Selective Breeding and Assisted Gene Flow in Corals
11. A selective breeding design based on parental rapid heat stress thresholds did not produce more heat-tolerant coral larvae
| Annika M. Lamb et al. | Ecological Solutions and Evidence | 15 January 2026
Shows that selecting parents with rapid heat-stress assays does not necessarily yield offspring with greater heat tolerance, highlighting the importance of selecting appropriate traits.
12. Proactive assisted gene flow for Caribbean corals in an era of rapid coral reef decline
| Andrew C. Baker et al. | Science | 24 July 2025
Discusses proactive movement of adaptive genetic variation among Caribbean coral populations as a tool for increasing resilience before populations collapse.
13. Assessing the potential for assisted gene flow to enhance heat tolerance of multiple coral genera over three key phenotypic traits
| Alexander Macadam et al. | Biological Conservation | 2025
Tests crosses between coral populations from different thermal environments and evaluates whether assisted gene flow improves multiple measures of heat tolerance.
14. Selective breeding enhances coral heat tolerance to marine heatwaves
| Adriana Humanes et al. | Nature Communications | 14 October 2024
Demonstrates experimentally that heat tolerance is heritable and that selective breeding can increase the ability of coral offspring to withstand marine heatwave conditions.
15. Predictive models for the selection of thermally tolerant corals based on offspring survival
| Kate M. Quigley and Madeleine J.H. van Oppen | Nature Communications | 29 March 2022
Develops predictive tools for identifying parental combinations likely to produce thermally tolerant coral offspring for breeding programs.
16. Cryopreservation can assist gene flow on the Great Barrier Reef
| Jonathan Daly et al. | Coral Reefs | 24 January 2022
Demonstrates that cryopreserved coral sperm can produce crosses among geographically separated populations, creating another pathway for assisted gene flow.
17. Census of heat tolerance among Florida's threatened staghorn corals finds resilient individuals throughout existing nursery populations
| Ross Cunning et al. | Proceedings of the Royal Society B | 20 October 2021
Finds substantial heat-tolerance variation among nursery-grown staghorn corals, providing material that could be prioritized for restoration and selective propagation.
18. Selecting Heat-Tolerant Corals for Proactive Reef Restoration
| Carlo Caruso, Dylan J. Hughes and Crawford Drury | Frontiers in Marine Science | 26 May 2021
Reviews approaches for identifying naturally heat-tolerant coral genotypes and incorporating them into restoration programs.
19. The active spread of adaptive variation for reef resilience
Explores how assisted gene flow and selective breeding could accelerate the movement of beneficial heat-tolerance variants across coral populations.
20. Considerations for maximizing the adaptive potential of restored coral populations in the western Atlantic
| Iliana B. Baums et al. | Ecological Applications | 2019
Recommends restoration strategies that preserve genetic diversity, mix provenances and retain traits likely to help coral populations adapt to future environmental conditions.
Genetic Variation, Adaptation and Thermal Tolerance
21. Marine heatwaves select for thermal tolerance in a reef-building coral
| Emily J. Howells et al. | Nature Climate Change | 10 July 2025
Finds widespread heritable variation in coral heat survival and evidence that recent marine heatwaves are already selecting for greater thermal tolerance.
22. Heat tolerance varies considerably within a reef-building coral species on the Great Barrier Reef
| Melissa S. Naugle et al. | Communications Earth & Environment | 23 September 2024
Documents exceptionally large heat-tolerance differences within and among reefs, identifying substantial variation that could be harnessed through artificial selection.
23. No apparent trade-offs associated with heat tolerance in a reef-building coral
| Liam Lachs et al. | Communications Biology | 12 April 2023
Finds no detectable cost of heat tolerance in growth or fecundity within the studied coral population, encouraging prospects for selective breeding.
24. Within-population variability in coral heat tolerance indicates climate adaptation potential
| Adriana Humanes et al. | Proceedings of the Royal Society B | 31 August 2022
Finds striking heat-tolerance differences among individuals on the same reef, revealing standing variation that natural or artificial selection could exploit.
25. The role of gene expression and symbiosis in reef-building coral acquired heat tolerance
| Megan E. Strader and Kate M. Quigley et al. | Nature Communications | 3 August 2022
Examines how host gene expression, acclimation and microbial symbioses interact with assisted gene flow to influence acquired thermal tolerance.
26. Intrapopulation adaptive variance supports thermal tolerance in a reef-building coral
| Crawford Drury et al. | Communications Biology | 19 May 2022
Shows that adaptive genetic variation exists even within individual coral populations and can influence offspring survival under heat stress.
27. Coral bleaching response is unaltered following acclimatization to reefs with distinct environmental conditions
| Katie L. Barott et al. | Proceedings of the National Academy of Sciences | 28 May 2021
Shows that bleaching resistance can remain stable after transplantation between contrasting environments, an important consideration for restoration using resilient genotypes.
28. Coral environmental memory: causes, mechanisms, and consequences for future reefs
Reviews evidence that previous environmental exposure can leave persistent physiological or epigenetic memories affecting subsequent coral stress tolerance.
29. Environmentally-induced parental or developmental conditioning influences coral offspring ecological performance
| Hollie M. Putnam et al. | Scientific Reports | 12 August 2020
Finds that parental environmental exposure can influence settlement, survival and growth of coral offspring, supporting investigation of transgenerational conditioning.
30. Stress-resistant corals may not acclimatize to ocean warming but maintain heat tolerance under cooler temperatures
| Verena Schoepf et al. | Nature Communications | 17 September 2019
Finds that naturally stress-resistant corals retain high thermal tolerance after transfer to cooler conditions, supporting their potential use in assisted relocation.
31. Coral chimerism as an evolutionary rescue mechanism to mitigate global climate change impacts
| Baruch Rinkevich | Global Change Biology | 2019
Proposes coral chimerism—the fusion of genetically distinct individuals—as a potential means of increasing genetic and physiological diversity under climate stress.
32. Potential and limits for rapid genetic adaptation to warming in a Great Barrier Reef coral
| Mikhail V. Matz et al. | PLOS Genetics | 19 April 2018
Models the capacity for rapid adaptation to warming and examines how genetic variation and larval connectivity influence coral persistence.
33. Rapid adaptive responses to climate change in corals
| Gergely Torda et al. | Nature Climate Change | 2017
Reviews evidence that corals can respond to climate change through genetic adaptation, acclimatization, symbiont changes and transgenerational mechanisms.
34. Genomic determinants of coral heat tolerance across latitudes
| Groves B. Dixon et al. | Science | 26 June 2015
Identifies genomic variation associated with differences in coral thermal tolerance across latitudes, providing a genetic foundation for assisted adaptation.
35. Rapid Acclimation Ability Mediated by Transcriptome Changes in Reef-Building Corals
| Rachael A. Bay and Stephen R. Palumbi | Genome Biology and Evolution | 15 May 2015
Demonstrates that corals can acquire increased heat resistance within days through rapid physiological and transcriptomic acclimation.
36. The role of transcriptome resilience in resistance of corals to bleaching
| François O. Seneca and Stephen R. Palumbi | Molecular Ecology | 2015
Links bleaching resistance with the ability of corals to maintain or rapidly restore gene-expression states during thermal stress.
37. Multilocus Adaptation Associated with Heat Resistance in Reef-Building Corals
| Rachael A. Bay and Stephen R. Palumbi | Current Biology | 15 December 2014
Finds that heat resistance is associated with variation at many loci, emphasizing the complex genetic architecture likely to underlie successful selective breeding.
38. Mechanisms of reef coral resistance to future climate change
Separates acclimation and adaptation effects in naturally heat-tolerant corals and demonstrates that both mechanisms can substantially increase thermal resistance.
39. Contrasting Patterns of Coral Bleaching Susceptibility in 2010 Suggest an Adaptive Response to Thermal Stress
| James R. Guest et al. | PLOS ONE | 9 March 2012
Documents altered bleaching susceptibility following previous exposure to thermal stress, providing early evidence of rapid adaptive or acclimatory responses.
40. Coral thermal tolerance shaped by local adaptation of photosymbionts
| Emily J. Howells et al. | Nature Climate Change | 18 December 2011
Shows that populations of the same coral photosymbiont can evolve different thermal tolerances and substantially alter host performance.
41. The Role of Hybridization in the Evolution of Reef Corals
| Bette L. Willis et al. | Annual Review of Ecology, Evolution, and Systematics | 2006
Reviews hybridization and introgression in reef corals and their potential contributions to evolutionary novelty, range expansion and environmental adaptation.
Experimental Evolution of Coral Symbionts
42. Pushing the limits: expanding the temperature tolerance of a coral photosymbiont through differing selection regimes
| Hugo J. Scharfenstein et al. | New Phytologist | 24 July 2024
Compares stable and fluctuating thermal-selection regimes and shows that the pattern of selection can strongly shape the thermal niche of evolved symbionts.
43. The use of experimentally evolved coral photosymbionts for reef restoration
| Matthew R. Nitschke et al. | Trends in Microbiology | 27 June 2024
Reviews the development of experimentally evolved Symbiodiniaceae and the scientific, regulatory and scaling challenges involved in moving the intervention toward field use.
44. Heat-evolved algal symbionts enhance bleaching tolerance of adult corals without trade-off against growth
| Wing Yan Chan et al. | Global Change Biology | 1 November 2023
Demonstrates that a laboratory-evolved symbiont can establish in adult corals and substantially increase heat tolerance without reducing host growth.
45. Heat-evolved microalgal symbionts increase thermal bleaching tolerance of coral juveniles without a trade-off against growth
| Kate M. Quigley et al. | Coral Reefs | 22 September 2023
Finds that some experimentally evolved symbionts improve juvenile coral bleaching tolerance without imposing the reduced-growth costs often associated with naturally heat-tolerant symbionts.
46. Chemical mutagenesis and thermal selection of coral photosymbionts induce adaptation to heat stress with trait trade-offs
| Hugo J. Scharfenstein et al. | Evolutionary Applications | 2023
Combines induced genetic variation with years of thermal selection and finds increased symbiont heat tolerance alongside changes in growth and nutrient use.
47. Assessing the contribution of bacteria to the heat tolerance of experimentally evolved coral photosymbionts
| Justin Maire et al. | Environmental Microbiology | 2023
Investigates whether bacterial communities contribute to thermal characteristics that emerge during long-term experimental evolution of coral photosymbionts.
48. Experimental evolution of the coral algal endosymbiont, Cladocopium goreaui: lessons learnt across a decade of stress experiments to enhance coral heat tolerance
| Kate M. Quigley et al. | Restoration Ecology | 12 January 2021
Synthesizes long-running experimental-evolution work and explores how many generations of selection may be required before evolved symbionts provide reliable benefits to coral hosts.
49. Dynamic symbioses reveal pathways to coral survival through prolonged heatwaves
| Danielle C. Claar et al. | Nature Communications | 8 December 2020
Finds that some corals recover during ongoing heat stress through proliferation of heat-tolerant symbionts, demonstrating naturally dynamic pathways to thermal resilience.
50. Heat-evolved microalgal symbionts increase coral bleaching tolerance
| Patrick Buerger et al. | Science Advances | 13 May 2020
Demonstrates that laboratory evolution of coral algal symbionts at elevated temperatures can produce strains that increase bleaching tolerance after introduction into coral hosts.
51. Host–symbiont combinations dictate the photo-physiological response of reef-building corals to thermal stress
| Kenneth D. Hoadley et al. | Scientific Reports | 10 July 2019
Shows that thermal performance depends on interactions between coral host genotype and symbiont identity rather than on the symbiont alone.
52. Experimental Evolution in Coral Photosymbionts as a Tool to Increase Thermal Tolerance
| Leela J. Chakravarti and Madeleine J.H. van Oppen | Frontiers in Marine Science | 3 July 2018
Shows that repeated thermal selection can generate stable increases in heat tolerance in several cultured coral photosymbiont lineages.
53. Symbiont community stability through severe coral bleaching in a thermally extreme lagoon
| E.G. Smith et al. | Scientific Reports | 25 May 2017
Investigates whether severe bleaching causes corals from an extreme thermal environment to change symbionts, helping define limits of natural symbiont shuffling.
54. Local adaptation constrains the distribution potential of heat-tolerant Symbiodinium from the Persian/Arabian Gulf
| Cecilia D'Angelo et al. | The ISME Journal | 19 May 2015
Examines exceptionally heat-tolerant symbionts and warns that adaptations to extreme environments may limit their performance when transferred elsewhere.
Microbiome Manipulation and Coral Probiotics
55. Coral microbiome manipulation elicits metabolic and genetic restructuring to mitigate heat stress and evade mortality
| Erika P. Santoro et al. | Science Advances | 13 August 2021
Shows that probiotic manipulation restructures coral metabolism and gene expression and can improve survival during experimentally induced heat stress.
56. Towards enhancing coral heat tolerance: a microbiome transplantation treatment using inoculations of homogenized coral tissues
| Thomas Doering et al. | Microbiome | 6 May 2021
Tests microbiome transplantation as a way of transferring potentially beneficial microbial communities and influencing coral performance during thermal stress.
57. Coral Probiotics: Premise, Promise, Prospects
| Raquel S. Peixoto et al. | Annual Review of Animal Biosciences | 2021
Reviews the developing field of coral probiotics and assesses mechanisms, potential applications, ecological risks and practical barriers to field deployment.
58. Marine probiotics: increasing coral resistance to bleaching through microbiome manipulation
| Phillipe M. Rosado et al. | The ISME Journal | 5 December 2018
Provides experimental evidence that inoculating corals with selected native bacterial consortia can partially reduce bleaching under elevated temperature.
59. Microbial contributions to the persistence of coral reefs
| Nicole S. Webster and Thorsten B.H. Reusch | The ISME Journal | 16 May 2017
Argues that rapidly responding microbial communities may contribute substantially to coral acclimatization, adaptation and holobiont evolution.
60. Beneficial Microorganisms for Corals (BMC): Proposed Mechanisms for Coral Health and Resilience
| Raquel S. Peixoto et al. | Frontiers in Microbiology | 7 March 2017
Establishes a conceptual framework for using beneficial microorganisms to support coral health, stress tolerance, nutrient cycling and disease resistance.
Restoration Programs, Implementation and Applied Research
61. Leveraging thermal regimes and connectivity networks to promote evolutionary adaptation across coral reef seascapes
| Javiera Olivares-Rojas, Liam Lachs, Mandy W.M. Cheung and Peter J. Mumby | One Earth | 9 July 2026
Proposes managing networks of warm-adapted source reefs, stepping stones and recipient reefs to promote natural and assisted spread of adaptive variation.
62. How assisted evolution could help coral reefs survive
| Adriana Humanes, James Guest and Liam Lachs | Newcastle University | 6 May 2026
Provides an accessible explanation of coral selective breeding and the logistical and evolutionary challenges involved in producing meaningful increases in heat tolerance.
63. Coral reef science must adapt for a chance to outpace climate change
| Newcastle University | Newcastle University | 30 March 2026
Summarizes the 2026 assisted-evolution roadmap and its warning that research progress may currently be slower than the rate of climate-driven warming.
64. Scoping Studies: Coral Assisted Evolution Workshop
| Coral Research & Development Accelerator Platform | CORDAP | 12 February 2023
Describes an international effort to identify knowledge gaps, research priorities and development pathways needed to advance coral assisted evolution.
65. Coral restoration and adaptation in Australia: The first five years
| Ian M. McLeod et al. | PLOS ONE | 30 November 2022
Reviews Australia's rapidly expanding coral-restoration and adaptation programs, including assisted evolution, propagation, deployment, monitoring and research priorities.
66. Developing Assisted Gene Flow as an intervention technique on the Great Barrier Reef
| Australian Institute of Marine Science | AIMS | 2021
Explains research on crossing corals from warmer and cooler parts of the Great Barrier Reef to accelerate movement of heat-adapted genetic variation.
67. How genetic interventions can increase the resistance of corals to warming oceans
| Australian Institute of Marine Science | AIMS | 2020
Explains how genomics, selective breeding and related interventions are being tested to increase coral bleaching resistance and support restoration.
68. Shifting paradigms in restoration of the world's coral reefs
| Madeleine J.H. van Oppen et al. | Global Change Biology | 1 March 2017
Argues that restoration must shift from recreating past reef states toward increasing future resilience using genetics, assisted evolution and microbial interventions.
69. Towards progressive coral reef conservation and restoration
| Australian Institute of Marine Science | AIMS | 1 March 2017
Discusses integration of selective breeding, microbial manipulation and assisted evolution into a broader decision framework for coral restoration.
70. Evolving coral reef conservation
| Australian Institute of Marine Science | AIMS | 15 February 2016
Describes an early international workshop organized to establish scientific priorities and public discussion around assisted evolution for coral resilience.
71. Assisted evolution
| Australian Institute of Marine Science | AIMS | Current resource
Provides an accessible overview of AIMS research on stress conditioning, selective breeding, hybridization, symbionts and other approaches designed to accelerate coral adaptation.
72. Breeding temperature tolerant corals for reef restoration and adaptation
| Australian Institute of Marine Science | AIMS | Current resource
Describes efforts to identify heat-tolerant parent corals, conduct controlled crosses and develop thermally resilient offspring for future reef restoration.
73. Growing heat tolerant corals
| Great Barrier Reef Foundation | Great Barrier Reef Foundation | Current resource
Outlines research on breeding, conditioning, aquaculture and other approaches intended to produce corals better able to survive future ocean temperatures.
74. Enhanced Corals and Treatments
| Reef Restoration and Adaptation Program | RRAP | Current resource
Summarizes coordinated research on coral genetics, selective breeding, experimentally evolved algae, probiotics and treatments designed for eventual large-scale restoration.
75. Coral Reproduction and Cryopreservation
Describes coral biobanking and reproductive technologies that preserve genetic diversity and could support future assisted gene flow, hybridization and restoration.
Assisted Gene Flow, Provenancing and Forest Adaptation
76. Assisted tree migration can preserve the European forest carbon sink under climate change
| Debojyoti Chakraborty et al. | Nature Climate Change | 25 July 2024
Models forest adaptation strategies and finds that using tree species and provenances suited to future climates could help preserve Europe's forest carbon sink.
77. Can assisted migration mitigate climate-change impacts on forests?
| Wenhuan Xu and Cindy E. Prescott | Forest Ecology and Management | 15 March 2024
Reviews more than 200 studies of forest assisted migration, examining evidence for benefits, maladaptation risks, invasiveness and policy challenges.
78. Weak local adaptation to climate in seedlings of a deciduous conifer suggests limited benefits and risks of assisted gene flow
| Beth Roskilly and Sally Aitken | Evolutionary Applications | 2024
Finds relatively weak climatic differentiation in western larch, suggesting both the benefits and risks of within-range assisted gene flow may be modest.
79. Assisting adaptation in a changing world
| Michael M. Webster et al. | Frontiers in Environmental Science | 18 September 2023
Places assisted evolution within a broader spectrum of interventions designed to facilitate acclimatization, evolutionary change, range shifts and ecosystem reorganization.
80. The application of assisted migration as a climate change adaptation tactic: An evidence map and synthesis
| William Twardek et al. | Biological Conservation | April 2023
Maps the global evidence base for assisted migration and finds that actual conservation deployments remain much rarer than experiments and theoretical studies.
81. Facilitated Adaptation as A Conservation Tool in the Present Climate Change Context: A Methodological Guide
| Elena Torres et al. | Plants | 10 March 2023
Provides step-by-step frameworks for using existing adaptive variation through assisted gene flow or generating pre-adapted genotypes through artificial selection.
82. Tamm Review: Provenance trials in the service of forestry assisted migration: A review of North American field trials and experiments
| Andrew Park and Jesse L. Rodgers | Forest Ecology and Management | 2023
Reviews common-garden and provenance experiments that can inform selection of tree populations for assisted migration under changing climates.
83. Assisted gene flow in the context of large-scale forest management in California, USA
| Derek J.N. Young et al. | Ecosphere | 2020
Examines how assisted gene flow could be operationalized within large-scale public forest management and reforestation programs in California.
84. Selective breeding of lodgepole pine increases growth and maintains climatic adaptation
| Ian R. MacLachlan et al. | Forest Ecology and Management | 1 May 2017
Finds that selective tree breeding can improve growth without eliminating important climatic adaptations, supporting its compatibility with assisted gene-flow programs.
85. Time to get moving: assisted gene flow of forest trees
| Sally N. Aitken and Jordan B. Bemmels | Evolutionary Applications | 6 July 2015
Reviews geographic adaptation in forest trees and develops practical recommendations for moving seed sources to match populations with future climates.
86. Climate-adjusted provenancing: a strategy for climate-resilient ecological restoration
| Suzanne M. Prober et al. | Frontiers in Ecology and Evolution | 23 June 2015
Proposes sourcing restoration material from a mixture of local and climate-matched populations to retain diversity while preparing restored ecosystems for future conditions.
87. Assisted Gene Flow to Facilitate Local Adaptation to Climate Change
Establishes the theoretical basis for moving adaptive alleles among populations to reduce climate maladaptation while weighing risks such as outbreeding depression.
88. Preparing for climate change: Forestry and assisted migration
| Mary I. Williams and R. Kasten Dumroese | Journal of Forestry | 4 July 2013
Reviews practical barriers to climate-based movement of forest reproductive material and proposes steps toward operational assisted-migration guidelines.
Evolutionary Rescue, Genetic Rescue and Conservation Genomics
89. Genetic Rescue: Latest Advances and Applications
| Luciano B. Beheregaray et al. | Evolutionary Applications | 19 March 2026
Reviews recent genetic-rescue applications and the increasing role of genomics in selecting donor populations, monitoring outcomes and managing risks.
90. Revisiting evolutionary rescue in the wild
| Laurinne J. Balstad et al. | Trends in Ecology & Evolution | 2026
Reassesses dozens of wild examples of evolutionary rescue and emphasizes management actions that reduce stress, preserve genetic diversity and protect adaptive alleles.
91. Direct and indirect impacts of synthetic biology on biodiversity conservation
| Nicholas B.W. Macfarlane et al. | iScience | 20 October 2022
Reviews potential conservation benefits and ecological, social and governance risks associated with increasingly powerful biotechnology and synthetic-biology interventions.
92. Evolutionary rescue via transgenerational plasticity: Evidence and implications for conservation
| Emily A. Harmon and David W. Pfennig | Evolution & Development | 1 February 2021
Reviews how environmentally induced traits passed between generations may temporarily buffer populations and provide additional time for genetic adaptation.
93. Nature 4.0: Assisted Evolution, De-extinction, and Ecological Restoration Technologies
| Leslie Paul Thiele | Global Environmental Politics | 1 August 2020
Examines the philosophical and political implications of using biotechnology to redesign organisms and ecological systems for conservation and restoration.
94. Will life find a way out? Evolutionary rescue and Darwinian adaptation to climate change
Examines whether adaptive evolution could prevent climate-driven losses predicted by ecological models and emphasizes substantial uncertainty about the speed of evolutionary rescue.
95. Guidelines for planning genomic assessment and monitoring of locally adaptive variation to inform species conservation
| Sarah P. Flanagan et al. | Evolutionary Applications | 2018
Provides an adaptive-management framework for using genomic information when planning translocations, genetic rescue, assisted gene flow and conservation monitoring.
96. Evolutionary Rescue
| Graham Bell | Annual Review of Ecology, Evolution, and Systematics | 15 September 2017
Reviews the theory and evidence for populations escaping extinction through sufficiently rapid adaptive evolution following severe environmental deterioration.
97. Genetic rescue to the rescue
Reviews evidence that introducing immigrants into small inbred populations can restore genetic diversity and fitness more effectively than previously appreciated.
98. Evolutionary rescue in a changing world
Synthesizes theoretical and experimental evidence on when adaptation can reverse population decline and prevent extinction in rapidly changing environments.
Historical and Public-Facing Assisted Evolution Sources
99. The Great Barrier Reef can repair itself, with a little help from science
| Australian Institute of Marine Science | AIMS | 2017
Explains early assisted-evolution experiments involving hybrid corals, thermally selected algal symbionts and efforts to produce reef-building corals better suited to future conditions.
100. Assisted Evolution - Giving some hope for coral reef survival
| Australian Institute of Marine Science | AIMS | 3 February 2015
Introduces the original coral assisted-evolution program and its proposed use of selective breeding, acclimatization and microbial manipulation to increase environmental stress tolerance.
Assisted Evolution: Coral Genetics, Breeding and Adaptive Capacity
101. Development and Genetic Monitoring of a Putatively Thiamine Deficiency Complex Tolerant Atlantic Salmon Broodstock
| Kimberly C. Heim et al. | Ecology and Evolution | August 2026
Describes an explicit assisted-evolution program selectively breeding Atlantic salmon families with greater resistance to thiamine deficiency.
102. Coral reefs at a crossroads
| Nature Ecology & Evolution | Nature Ecology & Evolution | 2026
Reviews emerging coral interventions including selective breeding, assisted gene flow, probiotics, cryopreservation and genomic approaches to reef restoration.
103. Adaptive Introgression in the Context of Climate Adaptation
| Various authors | Molecular Ecology | 2026
Reviews evidence that beneficial genetic variants transferred through hybridization can contribute to adaptation under changing climatic conditions.
104. Global coral genomic vulnerability explains recent reef losses
Uses a global coral genomic dataset to map heat-adapted genetic variation and identify reefs whose genetic composition may leave them especially vulnerable to warming.
105. A rapidly closing window for coral persistence under global warming
| Yves-Marie Bozec et al. | Nature Communications | 5 November 2025
Models adaptation and dispersal across thousands of Great Barrier Reef sites and finds that evolutionary adaptation could aid persistence if warming is sufficiently constrained.
106. Selective breeding boosts oyster resilience to ocean acidification via energy budget modulation
| Xiaoyan Jiang et al. | Marine Environmental Research | November 2025
Finds evidence that selective breeding can improve physiological resilience of oysters exposed to acidified conditions.
107. Selective breeding enhances coral heat tolerance even over small spatial scales
| Liam Lachs et al. | Proceedings of the Royal Society B | 2025
Demonstrates that selective breeding between nearby coral populations can increase offspring thermal tolerance, expanding opportunities for locally focused assisted-evolution programs.
108. Seascape Genomics Reveal Contrasting Population Structure in Sympatric and Congeneric Corals Across Thermal Clines
| Magena R. Marzonie et al. | Diversity and Distributions | 2025
Uses seascape genomics to examine population connectivity and environmental adaptation across thermal gradients, providing information relevant to assisted gene flow.
109. Turning the Tide: A 2°C Increase in Heat Tolerance Can Halve Climate Change-Induced Losses in Four Cold-Adapted Kelp Species
| Various authors | Ecology and Evolution | 2025
Models how experimentally or selectively increasing kelp thermal tolerance could substantially reduce projected losses of suitable habitat.
110. Hybridization mitigates climate change risk in mountainous birds
| Various authors | Nature Climate Change | 2025
Finds that introgression between closely related mountain bird species can provide genetic variants that reduce predicted climatic maladaptation.
111. Climate adaptive loci revealed by seascape genomics correlate with phenotypic variation in heat tolerance of the coral Acropora millepora
| Hugo Denis et al. | Scientific Reports | 27 September 2024
Links candidate climate-adaptive genomic loci with experimentally observed variation in coral heat tolerance, suggesting a pathway toward genomic selection of restoration broodstock.
112. Thermal tolerance traits of individual corals are widely distributed across the Great Barrier Reef
| Hugo Denis et al. | Proceedings of the Royal Society B | 11 September 2024
Finds substantial thermal-tolerance variation within and among Great Barrier Reef populations, revealing widespread material potentially useful for assisted evolution.
113. Breeding and Selecting Corals Resilient to Global Warming
| Kate M. Quigley | Annual Review of Animal Biosciences | 15 February 2024
Reviews selective breeding of corals for climate resilience, including quantitative genetics, phenotypic plasticity, broodstock selection and potential trade-offs.
114. Assisted evolution technologies for seagrass conservation and restoration
| Isabella Provera | The Open University | 2024
Doctoral research investigates thermal tolerance, seed traits and assisted gene flow as non-invasive assisted-evolution strategies for seagrass restoration.
115. Conservation Mitonuclear Replacement: Facilitated mitochondrial adaptation for a changing world
| Eric N. Iverson | Evolutionary Applications | 2024
Proposes combining mitochondrial replacement, assisted reproduction and genome editing to introduce climate-adapted metabolic variation into threatened populations.
116. Applying coral breeding to reef restoration: best practices, knowledge gaps, and priority actions in a rapidly-evolving field
| Anastazia T. Banaszak et al. | Restoration Ecology | 2023
Reviews coral sexual propagation and emphasizes broodstock selection strategies that retain genetic diversity while increasing adaptive capacity.
117. Signs of local adaptation by genetic selection and isolation promoted by extreme temperature and salinity in the Mediterranean seagrass Posidonia oceanica
| Various authors | Molecular Ecology | 2023
Identifies genomic signatures associated with extreme thermal and salinity regimes that could help identify stress-tolerant seagrass material for assisted evolution.
118. Experimental considerations of acute heat stress assays to quantify coral thermal tolerance
| J.J.V. Nielsen et al. | Scientific Reports | 7 October 2022
Evaluates high-throughput heat-stress assays that could be used to identify tolerant coral colonies for selective breeding, translocation and assisted gene flow.
119. Expression plasticity regulates intraspecific variation in the acclimatization potential of a reef-building coral
| Crawford Drury et al. | Nature Communications | 15 August 2022
Shows that short-term thermal conditioning can produce durable increases in tolerance but that the capacity to acclimatize differs considerably among coral genotypes.
120. The Genetic Component of Seagrass Restoration: What We Know and the Way Forwards
| Various authors | Water | March 2021
Reviews genetic diversity, assisted gene flow, climate-adjusted provenance and assisted evolution as tools for improving seagrass restoration.
121. Contemporary Oyster Reef Restoration: Responding to a Changing World
| Danielle A. P. Fitzsimons et al. | Frontiers in Ecology and Evolution | 2021
Discusses selective breeding, genetic diversity and assisted-evolution concepts as potential tools for creating oyster populations resilient to warming and acidification.
122. Phenotypic plasticity under rapid global changes: The intrinsic force for future seagrasses survival
| Various authors | Evolutionary Applications | 2021
Reviews acclimation, genetic adaptation and epigenetic plasticity in seagrasses and considers selection of resilient phenotypes for restoration.
123. Facilitated adaptation for conservation – Can gene editing save Hawaii's endangered birds from climate driven avian malaria?
| Michael D. Samuel et al. | Biological Conservation | 2020
Explores whether gene editing and selective breeding could increase malaria resistance in Hawaiian honeycreepers threatened by warming-driven disease expansion.
124. Adaptive introgression: a plant perspective
| Various authors | Biology Letters | 2018
Reviews adaptive introgression in plants and its potential conservation importance when rapid environmental change exceeds the capacity of standing variation.
125. Adaptive introgression as a resource for management and genetic conservation in a changing climate
| Jill A. Hamilton and Joshua M. Miller | Conservation Biology | February 2016
Argues that carefully managed hybridization and introgression may provide threatened populations with adaptive variation unavailable through mutation alone.
Assisted Migration, Seed Sourcing and Climate-Adjusted Provenancing
126. Context-dependent decision-making in seed sourcing for restoration
| Hayley R. Tumas et al. | Restoration Ecology | 23 August 2026
Argues that local, mixed and climate-informed seed-sourcing approaches should be selected according to species biology, genetics and restoration goals rather than a universal rule.
127. The influence of provenance on climate response and drought resilience of lodgepole pine in the southern Rocky Mountains, U.S.
| Katarina J. Warnick et al. | Forest Ecology and Management | 2026
Finds provenance-level differences in drought resistance and resilience that could inform climate-based assisted migration of lodgepole pine.
128. Sourcing seed for restoration in an era of climate change: conceptual frameworks and available evidence
| Jared J. Beck et al. | Restoration Ecology | 27 August 2025
Critically examines proposals to deliberately move pre-adapted seed sources and compares them with evidence supporting continued evolutionary adaptation in local populations.
129. Can tree-rings inform assisted migration? Revisiting provenance trials across Atlantic Canada to compare local adaptation between red spruce populations
| Loïc D'Orangeville et al. | Forest Ecology and Management | 15 February 2025
Uses decades-old provenance trials and tree-ring records to evaluate whether red spruce populations from warmer climates are suitable candidates for northward assisted migration.
130. COSST: A tool to facilitate seed provenancing for climate-smart ecosystem restoration
| Various authors | Journal of Applied Ecology | 21 January 2025
Introduces a tool for identifying composite, predictive and climate-adjusted seed-source areas using species distributions and climate projections.
131. Evaluating the effectiveness of climate-based seed transfer and assisted migration: a case study of lodgepole pine and interior spruce in western Canada
| Various authors | Annals of Forest Science | 2025
Finds that combining assisted migration with climate-based seed-transfer systems can increase projected tree growth and expand usable seed-deployment areas.
132. Learning from Early Application of a Transition Forest Climate Adaptation Planting Strategy Incorporating Assisted Migration in Southern New England
| Christopher C. Riely et al. | Journal of Forestry | 2025
Reports roughly a decade of monitoring from an operational-scale planting that included tree species expected to perform better under future climates.
133. Bringing genomics to the field: An integrative approach to seed sourcing for forest restoration
| Various authors | Evolutionary Applications | 2024
Integrates genomic information, field experiments and environmental data to guide forest seed sourcing under rapidly shifting climates.
134. The Swiss common garden network: testing assisted migration of tree species in Europe
| Peter Brang et al. | Frontiers in Forests and Global Change | 2024
Describes 57 long-term common gardens testing 18 tree species and more than 100 seed sources for suitability under future European climates.
135. Assessing assisted population migration (seed transfer) for eastern white pine at northern planting sites
| Various authors | Forest Ecology and Management | 2024
Tests climate-informed seed transfer for eastern white pine and assesses potential growth benefits at northern restoration sites.
136. Assisted migration outcomes for oak species and seed sources in southern Ontario, Canada
| John H. Pedlar et al. | Frontiers in Forests and Global Change | 2024
Reports growth and survival of oak species and southern seed sources intentionally planted farther north as a climate-adaptation experiment.
137. Understanding Local Adaptation to Prepare Populations for Climate Change
| Various authors | BioScience | 2023
Reviews how knowledge of local adaptation can inform managed gene flow, reintroductions, cryopreservation and other interventions.
138. Assessing uncertainty in genomic offset forecasts from landscape genomic models (and implications for restoration and assisted migration)
| Various authors | Frontiers in Ecology and Evolution | 2023
Uses red spruce to demonstrate how climate scenarios and model choices influence genomic-offset predictions used to plan assisted migration.
139. Genomics for monitoring and understanding species responses to global climate change
| Various authors | Nature Reviews Genetics | 2023
Reviews genomic, transcriptomic and epigenomic methods for detecting adaptation, plasticity and range shifts relevant to evolution-informed conservation.
140. Adaptation of white spruce to climatic risk environments in spring: Implications for assisted migration
| Mariah Casmey, Andreas Hamann and Uwe G. Hacke | Forest Ecology and Management | 1 December 2022
Examines geographic variation in bud-break and chilling requirements and concludes that modest northward transfers of southern white spruce sources may be viable.
141. Seed sourcing in the genomics era: multispecies provenance delineation for current and future climates
| Sheree J. Walters et al. | Restoration Ecology | 5 May 2022
Uses landscape genomics to identify seed provenances under current and projected climates and discusses assisted gene flow for ecological restoration.
142. Seed sourcing strategies for ecological restoration under climate change: A review of the current literature
| Various authors | Frontiers in Conservation Science | 2022
Reviews evidence for local, mixed, predictive and climate-adjusted seed-sourcing strategies designed to create more climate-resilient restored plant populations.
143. Seedlot Selection Tool and Climate-Smart Restoration Tool: Web-based tools for sourcing seed adapted to future climates
| John Bradley St. Clair et al. | Ecosphere | 2022
Describes practical tools allowing restoration managers to select seed lots matched to projected future climates while maintaining genetic diversity.
144. Applying genomics in assisted migration under climate change: Framework, empirical applications, and case studies
| Various authors | Evolutionary Applications | 2022
Provides a framework for incorporating neutral and adaptive genomic information into decisions about assisted population and species migration.
145. Assisted migration and the rare endemic plant species: the case of two endangered Mexican spruces
| Various authors | PeerJ | 2022
Models current and future suitable habitat for two highly restricted Mexican spruce species to evaluate possible locations for assisted migration.
146. Prospects and limitations of genomic offset in conservation management
| Christian Rellstab | Evolutionary Applications | 10 February 2021
Evaluates genomic-offset approaches for predicting future maladaptation and selecting populations for assisted migration or assisted gene flow.
147. Genomic Prediction of (Mal)Adaptation Across Current and Future Climatic Landscapes
| Various authors | Annual Review of Ecology, Evolution, and Systematics | 2 November 2020
Reviews genomic vulnerability and genetic-offset methods for identifying populations likely to require conservation interventions under future climates.
148. Xylem Anomalies as Indicators of Maladaptation to Climate in Forest Trees: Implications for Assisted Migration
Evaluates whether wood abnormalities can reveal climatic maladaptation and help establish safer limits for moving forest seed sources.
149. Survival, growth and cold hardiness tradeoffs in white spruce populations: Implications for assisted migration
| Various authors | Forest Ecology and Management | 2019
Identifies trade-offs between growth, survival and cold hardiness that must be considered when moving white spruce populations toward future climates.
150. Experimental test of assisted migration for conservation of locally range-restricted plants in Alberta, Canada
| Various authors | Global Ecology and Conservation | January 2019
Tests movement of two rare plant species beyond portions of their current ranges and finds strong species-specific differences in establishment success.
151. Ecological Restoration of Abies religiosa Forests Using Nurse Plants and Assisted Migration in the Monarch Butterfly Biosphere Reserve, Mexico
| Various authors | Frontiers in Ecology and Evolution | 2019
Tests uphill relocation of sacred fir seedlings and shows how nurse vegetation can greatly increase survival at prospective future-climate sites.
152. Adaptations of white spruce to climate: strong intraspecific differences in cold hardiness linked to survival
| Various authors | Ecology and Evolution | 2018
Links population-level climatic adaptation to cold hardiness and survival and highlights limits that must be considered in assisted migration prescriptions.
153. Lack of local adaptation to the establishment conditions limits assisted migration to adapt drought-prone Pinus nigra populations to climate change
| Pedro Antonio Tíscar et al. | Forest Ecology and Management | 2018
Uses reciprocal transplantation to test whether moving black pine seed sources would improve establishment under increasingly drought-prone conditions.
154. Survival and growth patterns of white spruce rangewide provenances and their implications for climate change adaptation
| Various authors | Ecology and Evolution | 2014
Uses 245 provenances to evaluate risks and benefits of intraspecific assisted migration and finds that some southern seed sources outperform local northern populations.
155. Building evolutionary resilience for conserving biodiversity under climate change
| Carla M. Sgrò, Andrew J. Lowe and Ary A. Hoffmann | Evolutionary Applications | 2011
Argues that conservation should explicitly preserve adaptive variation and use strategies such as composite and predictive provenancing where appropriate.
Genetic Rescue and Managed Gene Flow
156. Inbred source populations result in genetic rescue of imperiled trout populations
| Donovan A. Bell et al. | Biological Conservation | February 2026
Demonstrates that even genetically depauperate donor trout populations can produce meaningful rescue benefits when introduced into more severely inbred recipients.
157. Genetic rescue of Florida panthers reduced homozygosity but did not swamp ancestral genotypes
| Various authors | Publication not specified | 2025
Genomic analysis finds that genetic rescue reduced harmful homozygosity without replacing Florida panther genomes with Texas ancestry.
158. When birds of a feather flock together: Severe genomic erosion and the implications for genetic rescue in an endangered island passerine
| Emily L. Cavill et al. | Evolutionary Applications | 28 June 2024
Reconstructs more than a century of genomic erosion in Seychelles magpie-robins and evaluates opportunities for future genetic management among island populations.
159. Genetic rescue attempt in a small, inbred population of a wild endangered passerine
| Sarah Nichols et al. | Biological Conservation | February 2024
Examines ten-year results of introducing immigrants into an inbred hihi population and illustrates both potential benefits and limitations of genetic rescue.
160. Genetic rescue attempt in threatened populations: lessons from long-term monitoring
| Sarah Nichols et al. | UCL Discovery / Biological Conservation | 2024
Provides detailed analysis of the demographic and genetic outcomes following translocation into the threatened New Zealand hihi population.
161. Genetic rescue remains underused for aiding recovery of federally listed vertebrates in the United States
| Various authors | Journal of Heredity | 2023
Finds that despite numerous threatened populations likely to benefit from genetic augmentation, genetic rescue remains rarely implemented in U.S. recovery programs.
162. Reviewing the consequences of genetic purging on the success of rescue programs
| Various authors | Conservation Genetics | 2021
Reviews whether historical purging of deleterious alleles changes the benefits or risks of introducing outside genetic material to inbred populations.
163. Genetic rescue: A critique of the evidence supports maximizing genetic diversity rather than minimizing the introduction of putatively harmful genetic variation
| Richard Frankham | Biological Conservation | November 2020
Argues that maximizing genetic diversity usually offers greater conservation benefits than choosing highly restricted donors to avoid hypothetical genetic risks.
164. Genetics and extinction and the example of Isle Royale wolves
| Philip W. Hedrick | Animal Conservation | 2019
Uses Isle Royale wolves to examine why one-time genetic rescue may provide only temporary benefits when populations remain extremely small and isolated.
165. Genetic rescue in a plant polyploid complex: Case study on the importance of genetic and trait data for conservation management
| Alexander N. Schmidt-Lebuhn et al. | Ecology and Evolution | 25 April 2018
Shows how differences in ploidy and breeding compatibility can complicate genetic-rescue planning for rare plants.
166. Genetic rescue increases fitness and aids rapid recovery of an endangered marsupial population
| Andrew R. Weeks et al. | Nature Communications | 20 October 2017
Documents dramatic increases in fitness and population size after males from another population were introduced to endangered mountain pygmy possums.
167. Genetic rescue in a severely inbred wolf population
| Mikael Åkesson et al. | Molecular Ecology | 6 September 2016
Documents greater breeding success among descendants of immigrant wolves in the highly inbred Scandinavian wolf population.
168. Genetic rescue in Isle Royale wolves: genetic analysis and the collapse of the population
| Philip W. Hedrick et al. | Conservation Genetics | October 2014
Shows that the benefits produced by a single immigrant eventually declined as renewed inbreeding spread through the small wolf population.
169. The genetic rescue of two bottlenecked South Island robin populations using translocations of inbred donors
| Sol Heber et al. | Proceedings of the Royal Society B | 2013
Demonstrates that reciprocal gene flow between two inbred bird populations improved genetic diversity, survival, recruitment and reproductive traits.
170. Genomic sweep and potential genetic rescue during limiting environmental conditions in an isolated wolf population
| Jennifer R. Adams et al. | Proceedings of the Royal Society B | 2011
Documents the extraordinary reproductive success of a single immigrant wolf and the rapid spread of his genome through the Isle Royale population.
171. Genetic introgression and the survival of Florida panther kittens
| Various authors | Biological Conservation | November 2010
Evaluates kitten survival after Texas pumas were introduced to restore genetic variability to the severely inbred Florida panther population.
172. Genetic Restoration of the Florida Panther
| Warren E. Johnson et al. | Science | 24 September 2010
Reports that introduction of Texas pumas increased Florida panther numbers, doubled heterozygosity and improved several measures of survival and fitness.
173. Genetic rescue guidelines with examples from Mexican wolves and Florida panthers
| Philip W. Hedrick and Richard Fredrickson | Conservation Genetics | 2010
Establishes practical guidelines for determining when genetic rescue is warranted and illustrates them using two heavily managed carnivore populations.
174. Genetic rescue of an insular population of large mammals
| John T. Hogg et al. | Proceedings of the Royal Society B | 2006
Finds substantial improvements in reproduction, survival and other fitness traits after gene flow was experimentally restored to an isolated bighorn sheep population.
175. Tracking the Long-Term Decline and Recovery of an Isolated Population
| Ronald L. Westemeier et al. | Science | 27 November 1998
Classic greater prairie-chicken study showing that translocations from genetically diverse populations restored egg viability after decades of demographic and genetic decline.
Assisted Colonization, Managed Relocation and Conservation Policy
176. Revisiting the case for assisted colonisation under rapid climate change
| Charlie J. Gardner and James M. Bullock | Journal of Applied Ecology | 26 March 2025
Argues that large-scale assisted colonization may eventually be needed not only to save individual species but also to maintain functioning ecosystems.
177. Managing consequences of climate-driven species redistribution requires integration of ecology, conservation and social science
| Various authors | Biological Reviews | 2017
Argues that management of climate-driven range shifts requires ecological science to be combined with social, economic and governance considerations.
178. Climate-Driven Reshuffling of Species and Genes: Potential Conservation Roles for Species Translocations and Recombinant Hybrid Genotypes
| Various authors | Publication not specified | 2015
Discusses deliberate translocations, hybridization and introgression as possible responses to climate-driven reshuffling of species distributions and gene pools.
179. Assisted colonization as a climate change adaptation tool
| Rachael V. Gallagher et al. | Austral Ecology | 4 June 2014
Identifies ecological traits that could make species candidates for assisted colonization and discusses conditions associated with successful translocations.
180. Coming to Terms with the Concept of Moving Species Threatened by Climate Change – A Systematic Review of the Terminology and Definitions
| Various authors | PLOS ONE | 2014
Reviews hundreds of publications and documents the wide range of terms used for assisted migration, managed relocation and assisted colonization.
181. Translocation of imperiled species under changing climates
| Various authors | Annals of the New York Academy of Sciences | 2013
Reviews conservation translocation, managed relocation and structured decision-making for species threatened by changing climatic conditions.
182. Maximizing the success of assisted colonizations
| Alienor L.M. Chauvenet et al. | Animal Conservation | 2013
Reviews translocation science and proposes approaches to improving the probability that assisted colonization projects successfully establish self-sustaining populations.
183. Optimal timing for managed relocation of species faced with climate change
| Eve McDonald-Madden et al. | Nature Climate Change | 24 July 2011
Develops a quantitative framework for deciding when the extinction risk of waiting exceeds the ecological and economic costs of relocation.
184. Assisted colonization: Integrating conservation strategies in the face of climate change
| Various authors | Biological Conservation | January 2011
Places assisted colonization within a broader strategy combining habitat connectivity, conservation genetics and intervention when natural dispersal or adaptation is insufficient.
185. Assessing the benefits and risks of translocations in changing environments: a genetic perspective
| Andrew R. Weeks et al. | Evolutionary Applications | 2011
Provides a framework distinguishing translocations intended for immediate genetic rescue from those intended to increase future adaptive potential.
186. Move it or lose it? The ecological ethics of relocating species under climate change
| Ben A. Minteer and James P. Collins | Ecological Applications | October 2010
Examines the ethical and policy questions created when conservationists deliberately establish species in ecosystems where they have not historically occurred.
187. From Reintroduction to Assisted Colonization: Moving along the Conservation Translocation Spectrum
| Philip J. Seddon | Restoration Ecology | 2010
Places reintroductions, reinforcement and assisted colonization along a common intervention spectrum and argues that climate change is expanding the range of conservation options.
188. Assisted colonization is not a viable conservation strategy
| Anthony Ricciardi and Daniel Simberloff | Trends in Ecology & Evolution | May 2009
Presents a prominent critique arguing that uncertainty about invasive impacts can make deliberate introductions beyond native ranges unacceptably risky.
189. Multidimensional evaluation of managed relocation
| Various authors | Proceedings of the National Academy of Sciences | 2009
Develops an early framework for comparing extinction-reduction benefits of managed relocation against ecological, social and economic risks.
190. Managed Relocation
| U.S. National Park Service | National Park Service | Current resource
Provides a practical federal-management overview and risk-assessment framework for considering assisted migration and managed relocation.
Conservation Genomics and Evolutionary Potential
191. Climate change–mediated catastrophe exacerbates genomic vulnerability of a coastal cycad
| Various authors | Biological Conservation | May 2026
Combines genomic vulnerability with sea-level rise and invasive-species threats to develop conservation priorities for Cycas revoluta.
192. Local adaptation has a role in reducing vulnerability to climate change in a widespread Amazonian forest lizard
| André Yves et al. | Heredity | 5 May 2025
Identifies climate-associated loci and genomic-offset patterns showing that adaptive potential and climate risk differ substantially among populations.
193. Conservation genomics within government led conservation planning: an Australian case study exploring cost and benefit for threatened flora
| Various authors | Publication not specified | 2025
Examines real-world government use of genomic data to guide translocations, ex-situ collections and genetic rescue of threatened Australian plants.
194. Genomic Signatures of Climate-Driven (Mal)Adaptation in an Iconic Conifer, the English Yew
| Various authors | Evolutionary Applications | 2025
Validates genomic-offset predictions against phenotypic data and identifies populations most vulnerable to future climatic maladaptation.
195. Local Adaptation and Climate Change Vulnerability of the Relict Tree Species Taiwania cryptomerioides Provide Insights Into Its Conservation and Restoration
| Various authors | Evolutionary Applications | 2025
Uses landscape genomics to identify locally adaptive genetic variation and populations likely to require special conservation or restoration management.
196. Range-wide climate risk and adaptive potential in a cold-water fish species
| Various authors | Nature Communications | 2025
Combines experiments, genomics and climate projections for brook trout and identifies populations that may be useful sources for assisted gene flow.
197. Genomic vulnerability assessment reveals the potential benefits of adaptive introgression by mitigating the maladaptive risk of admixed populations
| Various authors | Publication not specified | 2025
Uses the endangered dove tree to show that introgression between populations may reduce predicted genomic vulnerability under future climate change.
198. Different Strokes for Different Croaks: Using an African Reed Frog Species Complex as a Model to Understand Idiosyncratic Population Requirements for Conservation Management
| Various authors | Evolutionary Applications | 2025
Combines genomic diversity, local adaptation, dispersal barriers and genomic offset across Kenya, Tanzania and Malawi to identify population-specific conservation needs.
199. Conserving Evolutionary Potential: Combining Landscape Genomics with Established Methods to Inform Plant Conservation
| Sally N. Aitken, Rebecca Jordan and Hayley R. Tumas | Annual Review of Plant Biology | 2 July 2024
Reviews how landscape genomics, common gardens and demographic studies can guide genetic rescue, assisted gene flow and climate-maladaptation management.
200. Genomic vulnerability of a freshwater salmonid under climate change
| Anna Tigano et al. | Evolutionary Applications | February 2024
Maps adaptive genomic variation in salmonids to identify populations at greatest risk of becoming genetically mismatched to future climates.
