Latitude dictates plant diversity effects on instream decomposition

Luz Boyero, Javier Perez, Naiara Lopez-Rojo, Alan M. Tonin, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albarino, Sankarappan Anbalagan, Leon A. Barmuta, Leah Beesley, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Ian C. Campbell, Bradley J. Cardinale, J. Jesus Casas, Ana M. Chara-Serna, Szymon Ciapala, Eric ChauvetCheco Colon-Gaud, Aydee Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, Maria E. Diaz, Michael M. Douglas, Arturo Elosegi, Andrea C. Encalada, Elvira de Eyto, Ricardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, Andre Frainer, Juliana S. Franca, Erica A. Garcia, Gabriela Garcia, Pavel Garcia, Mark O. Gessner, Paul S. Giller, Jesus E. Gomez, Sergio Gomez, Jose F. Goncalves, Manuel A. S. Graca, Robert O. Hall, Neusa Hamada, Luiz U. Hepp, Cang Hui, Daichi Imazawa, Tomoya Iwata, S. A. Junior Edson, Samuel Kariuki, Andrea Landeira-Dabarca, Maria Leal, Kaisa Lehosmaa, Charles M'Erimba, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Camden, Brendan G. McKie, Adriana O. Medeiros, Jen A. Middleton, Timo Muotka, Junjiro N. Negishi, Jesus Pozo, Alonso Ramirez, Renan S. Rezende, John S. Richardson, Jose Rincon, Juan Rubio-Rios, Claudia Serrano, Angela R. Shaffer, Fran Sheldon, Christopher M. Swan, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Vernasky, Anne Watson, Mourine J. Yegon, Catherine M. Yule

Research output: Contribution to journalArticle

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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 degrees 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.

Original languageEnglish
Article number7860
Number of pages7
JournalScience Advances
Volume7
Issue number13
DOIs
Publication statusPublished - Mar 2021

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