Ecosystem context illuminates conflicting roles of plant diversity in carbon storage

Ecology Letters
E Carol AdairBruce A Hungate

Abstract

Plant diversity can increase biomass production in plot-scale studies, but applying these results to ecosystem carbon (C) storage at larger spatial and temporal scales remains problematic. Other ecosystem controls interact with diversity and plant production, and may influence soil pools differently from plant pools. We integrated diversity with the state-factor framework, which identifies key controls, or 'state factors', over ecosystem properties and services such as C storage. We used this framework to assess the effects of diversity, plant traits and state factors (climate, topography, time) on live tree, standing dead, organic horizon and total C in Québec forests. Four patterns emerged: (1) while state factors were usually the most important model predictors, models with both state and biotic factors (mean plant traits and diversity) better predicted C pools; (2) mean plant traits were better predictors than diversity; (3) diversity increased live tree C but reduced organic horizon C; (4) different C pools responded to different traits and diversity metrics. These results suggest that, where ecosystem properties result from multiple processes, no simple relationship may exist with any one organismal factor. Integrating bi...Continue Reading

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Citations

Feb 7, 2019·Biological Reviews of the Cambridge Philosophical Society·Fons van der Plas
Oct 19, 2019·Biological Reviews of the Cambridge Philosophical Society·Xinli ChenZhiqun Huang
Nov 8, 2020·Nature Communications·Jaime Madrigal-GonzálezMarkus Stoffel
Oct 5, 2021·The Science of the Total Environment·Annalisa C M MazzoratoAndrew S MacDougall

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