Forest Ecosystems
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Forest Ecosystems
Forest ecosystems are complex biological systems in which trees, understory plants, animals, fungi, microorganisms, soils, water and climate interact. They range from tropical rainforests and seasonally dry forests to temperate woodlands and boreal forests. These ecosystems support a large share of terrestrial biodiversity while providing carbon storage, nutrient cycling, watershed protection, soil conservation, wildlife habitat and resources used by human societies.
Research increasingly treats forests not simply as collections of trees but as interconnected ecological systems. Forest structure, species diversity, soils, fungi, hydrology, disturbance and climate interact across multiple spatial and temporal scales. Changes to one part of a forest can therefore affect many other components of the ecosystem.
Biodiversity and Ecosystem Function
Forest biodiversity occurs at multiple levels, including genetic diversity, species diversity, functional diversity and variation among habitats and ecosystems. Trees form much of the physical structure of forests, but biodiversity also includes understory vegetation, mammals, birds, insects, fungi and diverse soil organisms.
Long-running forest biodiversity experiments indicate that greater tree diversity can increase productivity and support multiple ecosystem functions. Some benefits of biodiversity become stronger as forests mature. Research has also connected tree-species richness with greater ecosystem photosynthesis and has shown that functional diversity can influence tree growth, mortality, carbon storage and resilience.
Old and large trees, cavities, deadwood and other structural features provide specialized habitats for lichens, fungi, insects, birds and other organisms. Consequently, forest biodiversity depends not only on the number of tree species but also on the physical complexity and age structure of forests.
Climate Change, Carbon and Forest Resilience
Forests both influence and respond to the global climate. Through photosynthesis, trees remove carbon dioxide from the atmosphere and store carbon in vegetation, deadwood and soils. Forest carbon balances are affected by tree growth, mortality, wildfire, insects, harvesting and regeneration.
Climate change can alter tree distributions, productivity, wildfire frequency, pest outbreaks and habitat suitability. Research on boreal forests indicates that gradual warming and climatic extremes can have different effects on biodiversity. Warming may increase the diversity of some tree communities, while extreme climatic events can reverse those gains.
Forest biodiversity can contribute to resilience by providing species and ecological functions that respond differently to environmental stresses. Diverse forests may therefore have a greater range of ecological responses available when confronted by drought, disease, insects, fire and other disturbances.
Forest Soils, Fungi and Nutrient Cycling
Much of a forest ecosystem exists below ground. Forest soils store carbon, regulate water and nutrients, support plant growth and contain diverse communities of microorganisms and fungi. Changes in land use and forest management can substantially alter these ecological communities.
Research indicates that conversion of native forests to managed ecosystems or cropland can reduce soil biodiversity and impair functions such as decomposition, nutrient cycling, carbon storage and plant-microbial interactions. Deforestation can also change the physical, chemical and biological characteristics of soils.
Fungi are especially important components of forest ecosystems. Mycorrhizal fungi form relationships with plant roots and influence nutrient acquisition, vegetation growth and carbon dynamics. Fungal communities vary with forest type, climate, elevation, land-use intensity and stages of forest succession.
Deadwood also plays an important ecological role. Fallen trees, branches, stumps and other woody material provide habitat while contributing to nutrient cycling, soil formation and carbon storage.
Forests and the Water Cycle
Forests are closely connected with terrestrial water cycles. Vegetation intercepts rainfall, influences evapotranspiration and affects how water enters soils, moves through watersheds and eventually reaches streams and rivers.
Evidence synthesized across many countries indicates that disturbing or converting native forests can reduce water infiltration and increase surface runoff. Restoration of native forests can recover some of these hydrological functions.
Forest canopies also intercept precipitation before it reaches the ground. Tree species, canopy architecture, climate and geographic conditions influence the amount of rainfall captured and redistributed by vegetation.
These relationships make forest conservation important not only for biodiversity but also for erosion control, water quality, flood regulation and watershed management.
Disturbance, Fire and Ecological Change
Disturbance is a natural component of forest ecosystems. Fire, windstorms, insects, disease, drought and tree mortality create openings and alter forest structure, sometimes initiating new stages of ecological succession.
Fire is particularly important in many forest types. Some forests evolved with frequent fire, but historical fire exclusion combined with climate change has altered fire regimes in many regions. Increasingly severe fires can affect biodiversity, carbon storage and regeneration.
Repeated fires can have especially severe consequences. Research in tropical peat-swamp forests, for example, indicates that fire can sharply reduce tree diversity and that ecological recovery may require decades.
Disturbances can also interact. Drought can increase tree mortality and susceptibility to insects, while dead vegetation can influence subsequent fire behavior. Understanding forests therefore requires examining combinations of disturbances rather than treating each event independently.
Regeneration and Ecological Succession
Forest regeneration begins with processes such as seed production, dispersal, germination and seedling establishment. Light availability, canopy gaps, soils, moisture, competition and herbivory can all determine which trees successfully establish.
Following major disturbance or abandonment of agricultural land, forests may undergo ecological succession. Pioneer vegetation is gradually replaced or supplemented by longer-lived and often more shade-tolerant species.
Secondary forests can recover substantial biomass relatively quickly, but restoring the species composition and structural complexity of mature forests may take much longer. Some research indicates that more than a century may be required for secondary tropical forests to approach characteristics of mature forest ecosystems.
Natural regeneration can sometimes produce more biologically diverse forests than plantations. This demonstrates that increasing tree cover alone does not necessarily restore the ecological complexity of native forests.
Tropical, Temperate and Boreal Forests
Forest ecosystems differ substantially among climatic regions.
Tropical forests contain exceptionally high biodiversity and include rainforests, seasonal forests and tropical dry forests. They face pressures from agriculture, logging, infrastructure development, fire and other forms of land conversion.
Temperate forests experience strong seasonal changes and are shaped by interactions among succession, wind, fire, insects, nutrient cycling and climate. Their ecological communities include canopy trees, understory vegetation, wildlife, fungi and soil organisms.
Boreal forests occur across high northern latitudes and are strongly influenced by temperature, fire and climatic extremes. Changes in warming and disturbance regimes can alter tree diversity and the composition of these forests.
Mature and old-growth forests have particular ecological importance because they often contain large trees, deadwood, complex vertical structure and specialized habitats that take decades or centuries to develop.
Fragmentation and Landscape Ecology
Forest loss does not occur only when forests disappear completely. Fragmentation divides continuous forests into smaller and increasingly isolated patches.
Fragmentation increases forest edges and can alter temperature, humidity, decomposition, regeneration, biomass and the abundance of forest-specialist species. Agriculture, roads, urbanization and other forms of development are major causes of fragmentation.
Ecological connectivity is therefore an important component of forest conservation. Connected landscapes allow organisms to disperse between habitats and may become increasingly important as species shift their distributions in response to climate change.
Landscape-scale management recognizes that wildlife movement, watersheds, wildfire and other ecological processes frequently cross property and administrative boundaries.
Restoration and Sustainable Forest Management
Forest restoration attempts to rebuild ecological functions in degraded landscapes. Strategies include natural regeneration, assisted regeneration, tree planting, protection of existing vegetation and management of disturbance.
Restoration outcomes depend on how forests are restored. Plantations may increase tree cover and provide useful resources but do not necessarily reproduce the biodiversity or ecological structure of native forests. In some circumstances, naturally regenerating forests support greater biodiversity than planted forests.
Sustainable forest management seeks to maintain ecological, economic and social forest values over time. Management can involve timber production, biodiversity conservation, watershed protection, wildfire-risk reduction, recreation and climate mitigation.
Community management can also contribute to forest recovery. Evidence from community-managed forests demonstrates that local governance can sometimes produce substantial improvements in forest cover and ecological condition.
Forest Ecosystem Services and Human Well-Being
Forests provide numerous ecosystem services to human societies. These include carbon sequestration, water regulation, erosion control, air-quality improvement, wildlife habitat, timber, food, recreation, tourism and cultural values.
Urban and peri-urban forests demonstrate how these ecological and social benefits can overlap. Conservation of urban forest biodiversity can support recreation, community involvement, local economies and ecosystem protection.
Forest biodiversity can also affect human well-being through the environments in which people live and recreate. The structure and biological composition of forests can influence both beneficial and potentially harmful pathways connecting ecosystems with human health.
Monitoring and Conservation
Effective forest conservation requires information about how ecosystems change through time. Traditional forest inventories focused heavily on timber volume and forest area, but modern monitoring increasingly incorporates biodiversity, carbon stocks, soils, ecosystem services and socioeconomic uses.
Remote sensing, satellite observations, permanent forest plots and national inventories can reveal changes in forest extent, fragmentation, biomass and ecosystem condition.
Long-term monitoring is particularly important because ecological responses to logging, prescribed fire, climate change and other disturbances may take years or decades to become apparent.
Protecting forest biodiversity therefore requires more than preserving individual species. Conservation must also maintain ecological processes, soil communities, deadwood, mature trees, hydrological systems, habitat connectivity and the landscape conditions that allow forests to regenerate.
Conclusion
Forest ecosystems are dynamic networks linking biodiversity, vegetation, fungi, soils, water, climate and disturbance. Their ecological value extends far beyond the trees that visually dominate them.
Research shows that biodiversity can strengthen important ecosystem functions, while forest loss, fragmentation, intensive conversion and climate change can disrupt ecological relationships both above and below ground. Forests also play major roles in carbon storage, water regulation, soil protection and human well-being.
Maintaining healthy forests therefore requires an integrated approach combining biodiversity conservation, climate adaptation, sustainable management, ecological restoration and long-term monitoring. Protecting existing native and old-growth forests, maintaining landscape connectivity and restoring degraded ecosystems are complementary strategies for preserving the biological complexity and ecosystem services upon which both wildlife and human societies depend.
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Forest Biodiversity, Structure and Ecosystem Function
Ecological insights from three decades of forest biodiversity experiments reviews long-running experiments showing that greater tree diversity can improve productivity and multiple ecosystem functions, with many biodiversity benefits becoming stronger as forests mature.
| Nature Research Intelligence | Nature | 2026
Spatial patterns in forests emerge from seed dispersal, competition, soil conditions, topography and disturbance, producing mosaics that influence biodiversity, succession and carbon storage.
| Nature Research Intelligence | Nature | 2026
Biomass assessment combines forest plots, allometric measurements and remote sensing to measure living vegetation and track changes in forest productivity and carbon storage.
| Nature Research Intelligence | Nature | 2026
Forest diversity emerges from interactions among climate, soil, topography, disturbance and species traits and contributes to resilience, ecosystem services and habitat diversity.
| Nature Research Intelligence | Nature | 2026
Forest ecosystems range from tropical rainforest to boreal taiga and function through interactions among vegetation, animals, fungi, microorganisms, soil, water and climate while providing carbon storage, nutrient cycling, water regulation and habitat.
| Various researchers | Nature | 2026
Nature's forest ecology collection brings together current research on forest biodiversity, drought resistance, carbon storage, soil food webs, ecosystem processes and responses to global environmental change.
| Nature Research Intelligence | Nature | 2026
Forest carbon dynamics reflect the balance among photosynthesis, tree growth, mortality, wildfire, insects, harvesting and regeneration, making forest management an important component of climate mitigation strategies.
A systematic meta-review of deciduous forests finds that old and large trees, tree cavities, deadwood and large seed-producing trees are repeatedly associated with greater diversity of lichens, insects, birds and fungi.
| Jinsheng Yan, Boyuan Lou and Xingyuan He | Ecosystem Health and Sustainability | October 31, 2025
Forest Ecosystem Health Assessment examines ways of evaluating forest health through biodiversity, productivity, stand structure, soils, regeneration and ecosystem services while considering climate change and human disturbance.
| J. C. Fisher, M. Dallimer, G. E. Austen et al. | Nature Ecology & Evolution | June 24, 2025
Researchers examine connections between forest biodiversity, socioeconomic conditions and human well-being, showing why access to biologically rich forests can have important social as well as ecological dimensions.
| Muhammad Talal, Xiaoming Chen, Irfana Iqbal and Imran Ali | Forests | May 20, 2025
Forests contain highly varied microhabitats ranging from relatively moist environments to locations characterized by temperature, moisture, nutrient and chemical extremes, supporting unexpectedly diverse fungal communities.
| L. Gillerot, D. Landuyt, A. Bourdin et al. | Nature Sustainability | May 19, 2025
Forest biodiversity and structure modulate human health benefits and risks explores how forest composition and structural complexity influence both beneficial and potentially harmful pathways connecting forests with human health.
| Various authors | Forest Ecosystems | 2025
Biodiversity in primary versus managed forests examines how old living trees and large pieces of deadwood serve as biological legacies that support specialized lichens and other organisms in relatively undisturbed forests.
| Ruochen Cao, Yongguang Zhang, Marcos Fernández-Martínez et al. | Nature Plants | 2025
Global evidence for a positive relationship between tree species richness and ecosystem photosynthesis finds that forests containing more tree species generally exhibit greater ecosystem photosynthesis, reinforcing links between biodiversity and forest functioning.
| Various authors | Nature Ecology & Evolution | 2025
A study of nearly 8,800 trees across forest biodiversity experiments investigates how tree diversity, growth, plant traits and insect herbivory interact across temperate and subtropical forests.
| Various authors | Journal of Environmental Management | May 2024
Forest canopies intercept rainfall before it reaches the soil, making canopy architecture and tree composition important regulators of hydrology and biogeochemical cycling within forest ecosystems.
| Various authors | One Earth | 2024
Deadwood performs multiple ecological functions involving biodiversity, soils, carbon storage and ecosystem processes, creating important tradeoffs between retaining deadwood and harvesting woody biomass.
| Various authors | Forest Ecosystems | 2024
Research on 728 spruce stumps in Central European mountain forests examines how naturally broken and forestry-created stumps provide habitat for lichens, liverworts, mosses and vascular plants.
Climate Change, Carbon and Forest Soils
| Food and Agriculture Organization of the United Nations | FAO | February 2, 2026
Forests influence the global climate by absorbing carbon dioxide, storing carbon, regulating local climate patterns and increasing resilience to climate-related hazards.
| Various authors | Ecological Indicators | January 2026
A global meta-analysis examines how harvesting, fertilization and reforestation alter forest soil organic carbon and shows that the effects vary greatly among tropical, temperate and subtropical forests and over different time scales.
| Various authors | Forest Ecosystems | April 2025
A meta-analysis of 144 studies finds that deforestation causes widespread changes in the physical, chemical and biological characteristics of forest soils, including substantial effects on soil organic carbon.
| Shea A. Hoffman, Dehai Zhao and Daniel Markewitz | Forest Ecology and Management | March 15, 2025
Twenty years of forest-management data show that silvicultural treatments can affect soil carbon and nitrogen differently from aboveground nutrient pools, emphasizing the importance of tracking belowground ecosystem changes.
| Guopeng Liang | Nature Reviews Biodiversity | February 17, 2025
Research on Canadian forests links greater tree-species evenness and functional diversity with increased accumulation of soil organic carbon, connecting biodiversity conservation with climate regulation.
Comparisons of managed and unmanaged European temperate forests indicate that unmanaged forests generally contain larger soil-carbon stocks, suggesting that forest protection can contribute to long-term belowground carbon storage.
A 25-year review of U.S. forest-soil monitoring shows that soils regulate water and nutrients, support biodiversity, store large quantities of carbon and strongly influence forest health and responses to disturbance.
| Saif Ullah, Jianping Wu, Jawad Ali Shah et al. | Journal of Forestry Research | September 11, 2024
Tree diversity drives understory carbon storage across several forest types, demonstrating that biodiversity can affect carbon storage differently in canopy, shrub and herbaceous layers.
| Chinese Academy of Sciences research team | Phys.org | June 2024
Research on Chinese forests shows that tree species respond differently to warming and severe drought, suggesting that future forest composition may increasingly favor species with greater drought tolerance.
| Nina van Tiel, Fabian Fopp, Philipp Brun et al. | Nature Communications | May 31, 2024
Researchers map the distributions of more than 10,000 tree species worldwide and investigate how historical forest loss and climate change influence the distinctive tree communities of different regions.
| Various authors | Nature Communications | 2024
Deforestation amplifies climate-change effects in African montane forests, increasing temperatures and raising cloud levels in ecosystems important for biodiversity and freshwater supplies.
| P. Wijenayake et al. | Frontiers in Forests and Global Change | 2024
Changes in forest ecosystem stability under climate change uses species-distribution modelling to investigate how changing climatic conditions may alter dominant tree species and the long-term stability of old-growth forests.
| Various authors | Proceedings of the National Academy of Sciences | 2024
A global synthesis finds that converting native forests to managed ecosystems reduces soil biodiversity and impairs carbon storage, nutrient cycling, decomposition, plant symbioses and natural regulation of soil-borne pathogens.
| Various authors | Elsevier / Future Forests | 2024
Forest ecosystems simultaneously respond to and influence climate through interactions involving vegetation distribution, evapotranspiration, precipitation, water availability and land-management decisions.
| Pieter De Frenne | Nature Ecology & Evolution | November 27, 2023
Novel light regimes in European forests explains how drought, pests, storms and fire are opening forest canopies and changing the shaded microclimates on which much forest biodiversity depends.
| Various authors | Forest Ecology and Management | November 15, 2023
A large-scale study of forest-dominated nature reserves finds a positive relationship between tree species diversity and forest productivity and highlights climate as an important influence on that relationship.
Functional diversity affects tree vigor, growth and mortality in California mixed forests, providing evidence that mixtures of species with different ecological traits can influence forest resilience and carbon storage.
| Food and Agriculture Organization of the United Nations | FAO | 2020
Climate change can alter forest distributions, wildfire frequency, pest outbreaks, habitat suitability, productivity and the ability of forests to provide soil and watershed protection.
| C. Calfapietra, A. Barbati et al. | Ecosystem Health and Sustainability | June 20, 2017
A review of Italian forest ecosystems compares carbon storage in managed forests, plantations, old-growth forests and trees outside forests and discusses management approaches capable of increasing carbon stocks.
Forest-related ecosystem services include erosion control, watershed protection, climate regulation, air-quality improvement, biodiversity habitat, recreation, tourism, timber and numerous products important to human livelihoods.
| Food and Agriculture Organization of the United Nations | FAO | 2013
Forest biodiversity contributes to ecosystem resilience and climate adaptation, while biodiversity loss can reduce the capacity of forests to respond successfully to environmental change.
Disturbance, Fire, Insects and Resilience
| USDA Forest Service | USDA Forest Service | May 30, 2025
Climate Adaptive Landscape Monitoring investigates how fire exclusion, climate change and increasingly severe wildfires influence western forest recovery and how management can improve post-fire resilience.
Understory vegetation responds in complex ways to wind disturbance, salvage logging and herbivory, demonstrating that different groups of forest plants can respond independently to the same disturbance.
Fire is a fundamental ecological force shaping forest structure, species composition and biodiversity, but changing climate conditions and historical fire exclusion are producing increasingly difficult management challenges.
Research on tropical peat-swamp forests finds that fire sharply reduces tree diversity and that recovery can require decades, particularly where fires occur repeatedly.
Assisted tree migration is examined as one potential strategy for maintaining forest ecosystem goods and services as climate change makes existing tree communities less suited to future environmental conditions.
| Rhonda Mazza | USDA Forest Service | 2007
Post-fire forest management must balance erosion control, wildlife habitat, regeneration, insect risk, fuel accumulation and possible timber salvage while recognizing that fire is a natural component of many forest ecosystems.
| Richard L. Everett | USDA Forest Service | 1994
An ecosystem-health assessment of forests in eastern Oregon and Washington identifies fire, insects, disease and declining aquatic habitat as interconnected problems requiring landscape-scale restoration.
Regeneration, Succession and Restoration
| Nature Research Intelligence | Nature | 2026
Forest Ecosystem Dynamics and Restoration reviews succession, recruitment, disturbance and restoration processes and explains how they influence biodiversity, carbon storage and the recovery of degraded forests.
| Nature Research Intelligence | Nature | 2026
Natural regeneration and stand dynamics explores seed dispersal, germination, canopy gaps, woody debris, soil conditions and competition as forces controlling the renewal of forest stands.
| Nature Research Intelligence | Nature | 2026
Forest Dynamics and Ecological Succession describes how pioneer communities, competition, disturbance and shade-tolerant species interact as forests develop and recover through time.
| Leipzig University | ScienceDaily | April 16, 2025
An experiment in floodplain forests explores whether selective tree mortality and greater light availability can encourage oak regeneration in forests whose natural hydrology and canopy dynamics have been heavily altered.
| Various authors | Ecological Engineering | February 2025
Evaluation of large ecological conservation programs in China finds that forest restoration can improve ecosystem functioning and biodiversity, although outcomes differ among regions and restoration methods.
| Various authors | Elsevier | 2025
Nature-based forest restoration combines ecological science, landscape management and local or Indigenous knowledge to rebuild biodiversity and improve forest resilience to climate change.
| Dexi Zhang, Ruirui Mao, Mingxin Liu et al. | Forest Ecology and Management | December 1, 2024
Forest restoration on China's Loess Plateau shows that naturally regenerating secondary forests support greater bird diversity than plantations, illustrating that tree planting alone does not necessarily recreate native forest ecosystems.
Research in a coastal shelterbelt forest shows how canopy-gap size, light availability, soil nitrogen and position within gaps influence seedling establishment and forest regeneration.
Adaptive silviculture experiments in northern hardwood forests show that different management strategies can guide regeneration toward resistance, resilience or transition under future climate conditions.
Twenty years after reduced-impact logging in an Amazonian forest, total biomass and tree density recovered while commercially valuable timber volumes remained below pre-logging levels.
| Various authors | Forest Ecology and Management | March 1, 2024
A post-wildfire study demonstrates that both fire severity and browsing by deer and other ungulates strongly influence tree and shrub regeneration.
Tropical secondary forests can recover substantial biomass while still requiring more than a century to regain the species composition and structural characteristics of mature forests.
| Haonan Zhang, Jianing Xu, Weiqi Meng et al. | Forest Ecology and Management | January 15, 2024
Research on secondary forests suggests that early-arriving trees can sometimes facilitate rather than simply compete with later species, influencing the development of forest diversity during succession.
| Various authors | Forest Ecology and Management | January 1, 2024
Thinning and prescribed burning increased regeneration of some shade-tolerant conifers in fire-excluded mixed-conifer forests but failed to stimulate sufficient natural pine regeneration.
| Various authors | Nature Communications | 2024
A global meta-analysis finds that restoring forests and grasslands can increase methane uptake by soils, demonstrating another pathway through which ecosystem restoration can influence greenhouse-gas balances.
Long-term restoration of selectively logged tropical rainforest increased adult-tree diversity and promoted rare tree species compared with passive natural regeneration.
Forest Types and Regional Ecosystems
| Nature Research Intelligence | Nature | 2026
Tropical dry forests combine high endemism with strong seasonal drought and provide carbon storage, soil stabilization and other ecosystem services while facing extensive pressure from agriculture, grazing and infrastructure development.
| Nature Research Intelligence | Nature | 2026
Temperate forests are shaped by succession, wind, fire, insects, nutrient cycling and climate, while canopy trees, understory plants and soil organisms jointly regulate ecosystem productivity and biodiversity.
| Nature Research Intelligence | Nature | 2026
Ecological interactions in temperate forests include predation, herbivory, pollination, seed dispersal, parasitism and mycorrhizal partnerships that connect organisms into complex ecological networks.
A review examines interactions among forest soils, vegetation and fire that may contribute to mesophication and continuing difficulties regenerating oak-dominated forest ecosystems.
| Yanbiao Xi et al. | Nature Plants | September 11, 2024
Boreal-forest research demonstrates that biodiversity responses to warming cannot be understood from average temperature trends alone because climatic extremes can reverse increases in tree diversity.
| Various authors | Trees, Forests and People | June 2024
A study in Ethiopia compares community-managed and non-community-managed forests and finds higher woody-species diversity, regeneration and aboveground carbon stocks in participatory forest-management sites.
Research investigates how introducing Douglas fir into European beech forests affects vascular-plant diversity as foresters consider non-native tree species for climate adaptation.
Defining mature and old-growth forests is scientifically difficult because forests develop differently across climates and regions, yet older forests have major importance for biodiversity, carbon storage, water regulation and cultural values.
A review of Asian forest ecosystems examines the combined effects of climate change and air pollution on photosynthesis, transpiration, carbon sequestration, biodiversity, nutrient cycles and tree mortality.
| Food and Agriculture Organization of the United Nations | FAO | 2020
The State of the World's Forests explains that forests contain an exceptionally large share of terrestrial biodiversity and argues that biodiversity conservation must extend beyond protected areas into broader forest management.
| European Environment Agency / European Commission | FAO | 2016
European Forest Ecosystems reviews the continent's forests as providers of biodiversity, water regulation, soil protection, timber, recreation and climate mitigation while documenting widespread human modification.
| James Legilisho-Kiyiapi | USDA Forest Service | 2000
Research near Kenya's Maasai Mara documents a diverse collection of forest types ranging from Afro-montane dry conifer forest to semi-deciduous and dry-deciduous forests and evaluates human influences on these habitats.
Fragmentation, Connectivity and Landscape Ecology
| Nature Research Intelligence | Nature | 2026
Forest fragmentation changes continuous habitats into smaller patches and creates more forest edges, altering microclimate, biodiversity, carbon storage, water cycling and ecological connectivity.
| Various authors | Science of the Total Environment | December 20, 2024
A five-decade analysis develops indicators for evaluating forest ecosystem condition and shows how fragmentation increases the number of patches while reducing average patch size and ecological connectivity.
Satellite analysis of China's forests finds considerable regional variation in fragmentation and shows that agriculture and urbanization remain important drivers of forest subdivision.
| Various authors | Ecological Indicators | February 2024
Researchers propose improved measures of forest connectivity using continuous tree-cover-density maps rather than simple forest-versus-nonforest classifications.
| Various authors | Ecological Indicators | January 2024
A multiscale similarity index provides a new method for measuring fragmentation by considering forest size, shape, integrity and distances between isolated patches.
| Various authors | Nature Ecology & Evolution | 2024
Research across 225 European forest plots reveals major ecological differences between forest edges and interiors, including differences in specialist species, decomposition, heat buffering, tree regeneration and biomass.
| Various authors | Nature Communications | 2023
Global analysis of forest fragmentation between 2000 and 2020 examines where continuous forests are becoming divided into smaller patches and why fragmentation represents a major threat to biodiversity and ecosystem integrity.
| Food and Agriculture Organization of the United Nations | FAO | 2020
Landscape-scale forest conservation recognizes that wildlife movement, watersheds, disturbances and ecological processes cross ownership and management boundaries and therefore require coordinated planning.
Water and Forest Hydrology
| Food and Agriculture Organization of the United Nations | FAO | 2026
Forest ecosystems influence water quality, erosion, flooding, rainfall recycling and aquatic biodiversity, making watershed functions an important component of forest ecosystem management.
| Various authors | Journal of Hydrology X | December 1, 2024
Global analysis explores thresholds at which forest-cover loss begins producing major changes in water-cycle dynamics and finds that hydrological responses vary among rainforest, boreal, mixed, coniferous and Mediterranean forests.
| David Ellison et al. | Global Change Biology | January 29, 2024
A global meta-analysis of 287 studies from 58 countries finds that disturbing or converting native forests substantially reduces water infiltration and increases overland flow, while native-forest restoration can restore infiltration capacity.
| Demetrio Antonio Zema and Manuel Esteban Lucas-Borja | Springer | 2024
A review of climate change and forest hydrology examines impacts on vegetation, soils, streamflow, runoff and extreme hydrological events while discussing management and modelling approaches for adaptation.
Fungi, Mycorrhizae and Microbial Ecology
| Various authors | Applied Soil Ecology | September 2025
Research in subtropical China finds that forest type has a stronger influence on soil fungal communities than either season or soil depth, demonstrating close links between vegetation and belowground biodiversity.
| Various authors | Forests | August 13, 2025
Forest succession alters soil microbial diversity, demonstrating that ecological recovery involves major changes below ground as well as visible changes in trees and vegetation.
| Various authors | Science of the Total Environment | June 20, 2025
Research on Ethiopian Eucalyptus plantations finds that tree species, elevation, rainfall and temperature influence soil fungal communities and suggests that plantation mosaics can support fungal diversity at landscape scales.
| Danhua Zhang, Suhui Ma, Xuemei Yang et al. | Forest Ecology and Management | June 15, 2025
A global analysis finds that mycorrhizal association influences how forest plant biomass responds to nitrogen enrichment, highlighting the importance of fungal-tree partnerships in forest nutrient cycling.
| Various authors | Environmental Microbiology | 2025
Analysis of 300 German forest and grassland plots demonstrates that land-use intensity and environmental conditions alter soil fungal communities, with forests showing distinctive responses to management intensity.
| Huimei Tian, Liangzhe Li, Yunpeng Zhu et al. | Frontiers in Microbiology | 2025
Soil fungal communities change substantially as black-locust plantations move through successive coppice stages, illustrating how forest development reorganizes belowground ecological networks.
Management, Conservation and Monitoring
| Food and Agriculture Organization of the United Nations | FAO | February 2, 2026
Global forest monitoring provides information on carbon stocks, forest extent, biodiversity and land-use change needed to evaluate climate commitments and sustainable forest management.
| USDA Forest Service | USDA Forest Service | 2026
Modern forest management commonly combines objectives such as wildfire-risk reduction, biodiversity protection, watershed conservation, timber production and maintaining ecosystem resilience rather than optimizing forests for a single resource.
| Food and Agriculture Organization of the United Nations | FAO | 2026
National forest inventories increasingly measure biodiversity, carbon, ecosystem services and socioeconomic uses rather than simply timber volume and forest area.
| Food and Agriculture Organization of the United Nations | FAO | 2026
Sustainable forest management seeks to maintain the ecological, economic and social values of forests while conserving biodiversity, soils, water and ecosystem resilience across multiple geographic scales.
| Food and Agriculture Organization of the United Nations | FAO | 2026
Sustainable management attempts to balance timber production and human livelihoods with clean water, biodiversity conservation, climate mitigation and preservation of forest ecosystems for future generations.
| Various authors | Forest Ecology and Management | September 1, 2024
Long-term monitoring in Western Australia's jarrah forests examines six groups of organisms and shows how forest type, timber harvesting and prescribed burning influence biodiversity patterns over time.
| Various authors | Global Ecology and Conservation | August 2024
Community-managed Village Land Forest Reserves in Tanzania experienced substantially greater forest-cover recovery than nearby unprotected lands, highlighting the ecological potential of locally governed forests.
| Various authors | Journal of Forestry Research | 2024
The rapid expansion of forest-hydrology research reflects growing recognition that forests must be understood as interconnected ecological systems linking vegetation, climate, soils, biodiversity and water.
| Food and Agriculture Organization of the United Nations | FAO | 2021
FAO explains that forest biodiversity supports tree growth, carbon sequestration, pollination, seed dispersal and nutrient recycling and is fundamental to the resilience of sustainably managed forests.
| Yude Pan, Kevin McCullough and David Hollinger | USDA Forest Service / Forest Ecosystems | 2018
Research in New England forests examines relationships among biodiversity, structural characteristics, ecosystem functioning and stability, helping clarify how biological diversity contributes to forest ecosystem services.
| Don C. MacIver and Elaine Wheaton | FAO | 2003
Climate adaptation in forests requires understanding not only individual tree species but also the ecological structures, interactions and processes that allow diverse forest communities to persist.
| Jeffrey A. McNeely | FAO / Unasylva | 2002
Forest biodiversity at the ecosystem level examines how biological diversity extends from genes and species to entire ecosystems and discusses how ecosystem-level thinking can improve forest management.
| Food and Agriculture Organization of the United Nations | FAO | 1999
Forest inventories and biodiversity examines how forest inventories can move beyond timber measurements to track species composition, vulnerable ecosystems and other indicators needed for biodiversity conservation.
Ecosystem Services and Human Well-Being
| USDA National Institute of Food and Agriculture | USDA | August 17, 2026
USDA describes forests as ecosystems made up of trees, other plants, animals and physical resources that provide wildlife habitat, climate regulation, recreation, timber, bioenergy and other environmental and economic benefits.
| J. S. Mbau and M. Gitonga | CIFOR-ICRAF | 2025
A case study of Nairobi's Karura Forest illustrates how conserving urban forest biodiversity can be linked with community action, ecosystem protection and biodiversity-based economic activities.
| Food and Agriculture Organization of the United Nations | FAO | 2005
Forest environmental services include biodiversity conservation, carbon sequestration, watershed protection and landscape amenities, some of which can be incorporated into economic incentives for conservation.
| Food and Agriculture Organization of the United Nations | FAO | 1999
Forest ecosystems support human societies through water regulation, soil conservation, carbon storage, recreation, tourism, food resources, wildlife habitat and cultural and spiritual values.
