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Latitude dictates plant diversity effects on instream decomposition
Journal article   Open access   Peer reviewed

Latitude dictates plant diversity effects on instream decomposition

Luz Boyero, Javier Pérez, Naiara López-Rojo, Alan M Tonin, Francisco Correa-Araneda, Richard G Pearson, Jaime Bosch, Ricardo J Albariño, Sankarappan Anbalagan, Leon A Barmuta, …
Science Advances, Vol.7(13), pp.1-7
2021
PMCID: PMC7997509
PMID: 33771867
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Latitude dictates plant diversity effects on instream decomposition1.75 MBDownloadView
Published Version Open Access CC BY-NC V4.0
url
https://doi.org/10.1126/sciadv.abe7860View
Published Version

Abstract

Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity of this litter may influence instream decomposition globally in ways that are not yet understood. We investigated latitudinal differences in decomposition of litter mixtures of low and high functional diversity in 40 streams on 6 continents and spanning 113° of latitude. Despite important variability in our dataset, we found latitudinal differences in the effect of litter functional diversity on decomposition, which we explained as evolutionary adaptations of litter-consuming detritivores to resource availability. Specifically, a balanced diet effect appears to operate at lower latitudes versus a resource concentration effect at higher latitudes. The latitudinal pattern indicates that loss of plant functional diversity will have different consequences on carbon fluxes across the globe, with greater repercussions likely at low latitudes.

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Ecology

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#14 Life Below Water
#15 Life on Land

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