Latitude dictates plant diversity effects on instream decomposition

Boyero, Luz, Pérez, Javier, López-Rojo, Naiara, Tonin, Alan M., Correa-Araneda, Francisco, Pearson, Richard G., Bosch, Jaime, Albariño, Ricardo J., Anbalagan, Sankarappan, Barmuta, Leon A., Beesley, Leah, Burdon, Francis J., Caliman, Adriano, Callisto, Marcos, Campbell, Ian C., Cardinale, Bradley J., Jesús Casas, J., Chará-Serna, Ana M., Ciapała, Szymon, Chauvet, Eric, Colón-Gaud, Checo, Cornejo, Aydeé, Davis, Aaron M., Degebrodt, Monika, Dias, Emerson S., Díaz, María E., Douglas, Michael M., Elosegi, Arturo, Encalada, Andrea C., De Eyto, Elvira, Figueroa, Ricardo, Flecker, Alexander S., Fleituch, Tadeusz, Frainer, André, França, Juliana S., García, Erica A., García, Gabriela, García, Pavel, Gessner, Mark O., Giller, Paul S., Gómez, Jesús E., Gómez, Sergio, Gonçalves, Jose F., Graça, Manuel A.S., Hall, Robert O., Hamada, Neusa, Hepp, Luiz U., Hui, Cang, Imazawa, Daichi, Iwata, Tomoya, Junior, Edson S.A., Kariuki, Samuel, Landeira-Dabarca, Andrea, Leal, María, Lehosmaa, Kaisa, M’Erimba, Charles, Marchant, Richard, Martins, Renato T., Masese, Frank O., Camden, Megan, McKie, Brendan G., Medeiros, Adriana O., Middleton, Jen A., Muotka, Timo, Negishi, Junjiro N., Pozo, Jesús, Ramírez, Alonso, Rezende, Renan S., Richardson, John S., Rincón, José, Rubio-Ríos, Juan, Serrano, Claudia, Shaffer, Angela R., Sheldon, Fran, Swan, Christopher M., Tenkiano, Nathalie S.D., Tiegs, Scott D., Tolod, Janine R., Vernasky, Michael, Watson, Anne, Yegon, Mourine J., and Yule, Catherine M. (2021) Latitude dictates plant diversity effects on instream decomposition. Science Advances, 7 (13). eabe7860.

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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° 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.

Item ID: 70511
Item Type: Article (Research - C1)
ISSN: 2375-2548
Copyright Information: Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
Date Deposited: 13 Apr 2022 23:30
FoR Codes: 41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410404 Environmental management @ 40%
31 BIOLOGICAL SCIENCES > 3103 Ecology > 310304 Freshwater ecology @ 60%
SEO Codes: 18 ENVIRONMENTAL MANAGEMENT > 1803 Fresh, ground and surface water systems and management > 180301 Assessment and management of freshwater ecosystems @ 100%
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