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- W2946676907 endingPage "1612" @default.
- W2946676907 startingPage "1600" @default.
- W2946676907 abstract "Many biotic interactions influence community structure, yet most distribution models for plants have focused on plant competition or used only abiotic variables to predict plant abundance. Furthermore, biotic interactions are commonly context‐dependent across abiotic gradients. For example, plant–plant interactions can grade from competition to facilitation over temperature gradients. We used a hierarchical Bayesian framework to predict the abundances of 12 plant species across a mountain landscape and test hypotheses on the context‐dependency of biotic interactions over abiotic gradients. We combined field‐based estimates of six biotic interactions (foliar herbivory and pathogen damage, fungal root colonization, fossorial mammal disturbance, plant cover and plant diversity) with abiotic data on climate and soil depth, nutrients and moisture. All biotic interactions were significantly context‐dependent along temperature gradients. Results supported the stress gradient hypothesis: as abiotic stress increased, the strength or direction of the relationship between biotic variables and plant abundance generally switched from negative (suggesting suppressed plant abundance) to positive (suggesting facilitation/mutualism). For half of the species, plant cover was the best predictor of abundance, suggesting that the prior focus on plant–plant interactions is well‐justified. Explicitly incorporating the context‐dependency of biotic interactions generated novel hypotheses about drivers of plant abundance across abiotic gradients and may improve the accuracy of niche models." @default.
- W2946676907 created "2019-05-29" @default.
- W2946676907 creator A5013216747 @default.
- W2946676907 creator A5028275615 @default.
- W2946676907 creator A5053194433 @default.
- W2946676907 creator A5063169640 @default.
- W2946676907 date "2019-06-27" @default.
- W2946676907 modified "2023-09-26" @default.
- W2946676907 title "Context‐dependent biotic interactions control plant abundance across altitudinal environmental gradients" @default.
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