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Updated: Nov 11, 2025
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Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
Published on: March 12, 2013
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Latitude dictates plant diversity effects on instream decomposition
Luz Boyero1,2, Javier Pérez3, Naiara López-Rojo3
1Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain. luz.boyero@ehu.eus.
Science Advances
|March 27, 2021
Summary
Litter functional diversity impacts stream decomposition differently across latitudes. Lower latitudes show a balanced diet effect, while higher latitudes exhibit a resource concentration effect, influencing global carbon cycles.
Area of Science:
- Ecology
- Global Biogeochemistry
- Environmental Science
Background:
- Running waters are significant in global carbon fluxes via decomposition of terrestrial plant litter.
- The influence of litter diversity on instream decomposition globally is not fully understood.
Purpose of the Study:
- To investigate latitudinal differences in the decomposition of low and high functional diversity litter mixtures.
- To understand how evolutionary adaptations of detritivores influence decomposition across latitudes.
Main Methods:
- Studied litter decomposition in 40 streams across 6 continents, spanning 113° of latitude.
- Compared decomposition rates of low and high functional diversity litter mixtures.
Main Results:
- Found significant latitudinal differences in the effect of litter functional diversity on decomposition.
- Identified a balanced diet effect at lower latitudes and a resource concentration effect at higher latitudes.
- These effects are linked to evolutionary adaptations of detritivores to resource availability.
Conclusions:
- The impact of losing plant functional diversity on carbon fluxes varies globally.
- Greater repercussions on global carbon fluxes are anticipated at lower latitudes due to changes in litter diversity.
