Biodiversity Dynamics in Forest Ecosystems

Forest ecosystems harbour a vast array of species whose interactions and distributions shift in response to natural processes and human interventions. Biodiversity dynamics encompasses changes in species richness, composition and functional roles across spatial and temporal scales. Drivers include disturbance regimes such as fire and drought, successional transitions from regeneration to maturity, and management practices that alter canopy structure, deadwood abundance and nutrient cycles. Climate fluctuations influence soil moisture, temperature and phenology, thereby affecting understorey communities and canopy species differently. Structural heterogeneity, arising from variation in tree size, gap formation and deadwood distribution, underpins habitat complexity and resource diversity. Multifunctional forests deliver a range of ecosystem services—from carbon storage and water regulation to pollination and cultural values—yet balancing these services often involves trade-offs. Global research emphasises the importance of integrating conservation objectives with sustainable timber and non-timber production, adaptive management to mitigate climate impacts, and landscape-scale planning that maintains connectivity and refugia. Understanding biodiversity dynamics is crucial for predicting ecosystem resilience, guiding restoration efforts and informing policy on sustainable forest stewardship.

Research from Nature Portfolio

Analyses of forest attributes and ecosystem services have revealed that certain stand structural features—such as large trees, canopy gaps and mixed species composition—are the strongest predictors of multiple ecosystem functions. Experimental and observational work demonstrates that enhancing structural heterogeneity promotes simultaneous gains in carbon sequestration, biodiversity support and nutrient cycling. A global meta-analysis comparing managed and unmanaged systems indicates that selection and reduced-impact logging regimes offer the best compromise between species richness and economic returns, whereas clear-cutting and monoculture plantations incur greater biodiversity loss per unit profit. Investigations into mechanisms underpinning diversity–function relationships have identified a ‘jack-of-all-trades’ effect, whereby species with moderate contributions across several functions drive multifunctionality more consistently than those specialising in single services. These findings underscore the need for management strategies that foster diverse assemblages and structural complexity to sustain ecosystem multifunctionality.

Research from all publishers

An experimental drought study in boreal forests assessed understorey plant responses across gradients of canopy cover and soil moisture. Results showed that bryophytes suffered more persistent drought impacts than vascular plants, and that denser canopy and higher soil moisture buffered understorey species against extreme summer dryness. A large-scale investigation in temperate lowland forests examined bryophyte diversity in both managed and unmanaged reserves. Deadwood volume emerged as the primary driver of overall and specialist bryophyte richness, with macroclimatic factors such as solar radiation and temperature modulating these effects non-linearly. In mountain temperate forests, research on epiphytes demonstrated that host-tree identity and light availability jointly shape bryophyte and lichen assemblages. Broadleaved species were shown to support higher epiphytic richness than conifers, highlighting the role of mixed-species retention in commercial stands for conserving epiphytic biodiversity.

Biodiversity Dynamics in Forest Ecosystems publication trend

The graph below shows the total number of articles in biodiversity dynamics in forest ecosystems across all publications each year (not limited to Nature Index journals).

Technical terms

Structural heterogeneity: Variation in three-dimensional forest features, including tree sizes, canopy gaps and deadwood distribution.

Ecosystem multifunctionality: Capacity of an ecosystem to maintain multiple functions and services concurrently, such as productivity, nutrient cycling and habitat provision.

Understorey: Vegetation layer beneath the main forest canopy, comprising shrubs, herbaceous plants and young saplings.

Deadwood: Standing or fallen non-living woody material that provides habitat, nutrient sources and structural complexity.

Epiphyte: Organism, typically a moss, lichen or fern, that grows non-parasitically upon another plant, utilising its surface for support.

Successional stage: Discrete phase in forest development, from early regeneration through maturity to decay, characterised by distinct species assemblages and structure.

References

1. Canopy cover and soil moisture influence forest understory plant responses to experimental summer drought. Global Change Biology (2024).
2. Macroclimate modulates the positive dead-wood influence on bryophyte diversity in managed and unmanaged temperate lowland forests. Journal of Environmental Management (2024).
3. Light availability and phorophyte identity drive epiphyte species richness and composition in mountain temperate forests. Ecological Informatics (2024).
4. Multiple forest attributes underpin the supply of multiple ecosystem services. Nature Communications (2018).
5. Impact of Forest Management on Species Richness: Global Meta-Analysis and Economic Trade-Offs. Scientific Reports (2016).
6. Jack-of-all-trades effects drive biodiversity–ecosystem multifunctionality relationships in European forests. Nature Communications (2016).