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Seasonal structural stability promoted by forest diversity and composition explains overyielding
J Antonio Guzmán Q1,2, Maria H Park1,2, Laura J Williams3
1Department of Ecology, Evolution, and Behavior, University of Minnesota, Saint Paul, Minnesota, USA.
Ecology
|March 17, 2025
Summary
Forest structural stability, measured using remote sensing, significantly explains overyielding in wood productivity. This stability integrates multiple diversity dimensions, highlighting its importance for forest ecosystem function.
Area of Science:
- Ecology
- Forestry
- Remote Sensing
Background:
- Forest productivity stability is often linked to tree species diversity.
- Drivers of forest structural stability and its impact on productivity are not well understood.
Purpose of the Study:
- To evaluate the relationship between forest structure, diversity, and remotely sensed metrics.
- To determine if structural stability (SS) explains overyielding in wood productivity.
Main Methods:
- Utilized a 10-hectare tree diversity experiment with Uncrewed Aerial Vehicle-Light Detecting and Ranging (UAV-LiDAR) surveys.
- Derived metrics of canopy height heterogeneity, fractional plant cover, and forest structural complexity.
- Assessed SS using inverse coefficients of variation and linked to Net Biodiversity Effect (NBE) and wood productivity.
Main Results:
- Wood volume, functional, phylogenetic diversity, and variability explained remotely sensed forest structure and SS.
- Higher SS in forest complexity and canopy cover correlated with increased overyielding, driven by complementarity.
- Structural stability of complexity explained more NBE variation than diversity dimensions.
Conclusions:
- Forest structural stability is a key metric integrating diversity effects and driving overyielding.
- Remote sensing combined with ecological data can reveal the role of structural stability in forest processes.
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