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1. Impacts of detritivore diversity loss on instream decomposition are greatest in the tropics

Author

Luz Boyero, Naiara López-Rojo, Alan M. Tonin, Javier Pérez, Francisco Correa-Araneda, Richard G. Pearson, Jaime Bosch, Ricardo J. Albariño, Sankarappan Anbalagan, Leon A. Barmuta, Ana Basaguren, Francis J. Burdon, Adriano Caliman, Marcos Callisto, Adolfo R. Calor, Ian C. Campbell, Bradley J. Cardinale, J. Jesús Casas, Ana M. Chará-Serna, Eric Chauvet, Szymon Ciapała, Checo Colón-Gaud, Aydeé Cornejo, Aaron M. Davis, Monika Degebrodt, Emerson S. Dias, María E. Díaz, Michael M. Douglas, Andrea C. Encalada, Ricardo Figueroa, Alexander S. Flecker, Tadeusz Fleituch, Erica A. García, Gabriela García, Pavel E. García, Mark O. Gessner, Jesús E. Gómez, Sergio Gómez, Jose F. Gonçalves, Manuel A. S. Graça, Daniel C. Gwinn, Robert O. Hall, Neusa Hamada, Cang Hui, Daichi Imazawa, Tomoya Iwata, Samuel K. Kariuki, Andrea Landeira-Dabarca, Kelsey Laymon, María Leal, Richard Marchant, Renato T. Martins, Frank O. Masese, Megan Maul, Brendan G. McKie, Adriana O. Medeiros, Charles M. M’ Erimba, Jen A. Middleton, Silvia Monroy, Timo Muotka, Junjiro N. Negishi, Alonso Ramírez, John S. Richardson, José Rincón, Juan Rubio-Ríos, Gisele M. dos Santos, Romain Sarremejane, Fran Sheldon, Augustine Sitati, Nathalie S. D. Tenkiano, Scott D. Tiegs, Janine R. Tolod, Michael Venarsky, Anne Watson, and Catherine M. Yule

Subjects
Science
Abstract

It is unclear whether stream detritivore diversity enhances decomposition across climates. Here the authors manipulate litter diversity and examine detritivore assemblages in a globally distributed stream litterbag experiment, finding a positive diversity-decomposition relationship stronger in tropical streams, where detritivore diversity is lower.

Published
2021
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2. Impacts of detritivore diversity loss on instream decomposition are greatest in the tropics

Author

Robert O. Hall, Brendan G. McKie, Checo Colón-Gaud, Andrea C. Encalada, Aydeé Cornejo, Juan Rubio-Ríos, José Rincón, Luz Boyero, Francis J. Burdon, Eric Chauvet, Anne Watson, Ricardo J. Albariño, Ana M. Chará-Serna, Samuel K Kariuki, Fran Sheldon, Nathalie Sia Doumbou Tenkiano, Renato Tavares Martins, Javier Pérez, Ian C. Campbell, Michael M. Douglas, Ana Basaguren, Szymon Ciapała, Leon A. Barmuta, Jen A. Middleton, Neusa Hamada, Emerson S. Dias, Romain Sarremejane, Timo Muotka, José F. Gonçalves, Tadeusz Fleituch, Bradley J. Cardinale, Alexander S. Flecker, Andrea Landeira-Dabarca, Naiara López-Rojo, Adolfo R. Calor, Daichi Imazawa, Junjiro N. Negishi, Silvia Monroy, Adriana O. Medeiros, Aaron Davis, Erica A. Garcia, Ricardo Figueroa, Sankarappan Anbalagan, Catherine M. Yule, Scott D. Tiegs, Gisele Moreira dos Santos, Jesús E. Gómez, Pavel E García, Alonso Ramírez, Francisco Correa-Araneda, Janine Rodulfo Tolod, Charles M M' Erimba, Richard Marchant, J. Jesús Casas, Alan M. Tonin, Manuel A. S. Graça, Jaime Bosch, Frank O. Masese, Marcos Callisto, Michael P. Venarsky, Daniel C. Gwinn, Megan Maul, Tomoya Iwata, Gabriela García, Monika Degebrodt, Sergio Gómez, María Leal, Kelsey Laymon, Mark O. Gessner, Richard G. Pearson, John S. Richardson, Cang Hui, Augustine Sitati, Adriano Caliman, María Elisa Díaz, Eusko Jaurlaritza, Universidad del País Vasco, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Laboratoire Ecologie Fonctionnelle et Environnement (ECOLAB), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire Ecologie Fonctionnelle et Environnement (LEFE), Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), and Université de Toulouse (UT)

Subjects
0106 biological sciences, Insecta, 010504 meteorology & atmospheric sciences, Climate, Ecosystem ecology, Biodiversité et Ecologie, Biome, Biodiversity, General Physics and Astronomy, 01 natural sciences, biomass at higher latitudes, Abundance (ecology), Body Size, Biomass, Milieux et Changements globaux, Biomass (ecology), Multidisciplinary, Ecology, Litter decomposition, biogeochemical cycles, Biota, Detritivore diversity, Freshwater ecology, tropical areas, rates of extinction, Rainforest, Science, [SDE.MCG]Environmental Sciences/Global Changes, 010603 evolutionary biology, Chironomidae, Article, General Biochemistry, Genetics and Molecular Biology, diversity, Rivers, Animals, 14. Life underwater, Tundra, Ecosystem, Ephemeroptera, 0105 earth and related environmental sciences, Tropical Climate, decomposition, Detritivore, Tropics, General Chemistry, 15. Life on land, Plant Leaves, Geochemistry, 13. Climate action, Instream decomposition, Litter, Environmental science, Species richness, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

he relationship between detritivore diversity and decomposition can provide information on how biogeochemical cycles are affected by ongoing rates of extinction, but such evidence has come mostly from local studies and microcosm experiments. We conducted a globally distributed experiment (38 streams across 23 countries in 6 continents) using standardised methods to test the hypothesis that detritivore diversity enhances litter decomposition in streams, to establish the role of other characteristics of detritivore assemblages (abundance, biomass and body size), and to determine how patterns vary across realms, biomes and climates. We observed a positive relationship between diversity and decomposition, strongest in tropical areas, and a key role of abundance and biomass at higher latitudes. Our results suggest that litter decomposition might be altered by detritivore extinctions, particularly in tropical areas, where detritivore diversity is already relatively low and some environmental stressors particularly prevalent., This study was part of the DecoDiv project conducted by the GLoBE network (www.globenetwork.es), which is coordinated by L. B. Most research was based on crowdfunding (details on specific funding sources at each region are given in Supplementary Information). Project coordination was funded by Basque Government funds (Ref. IT951-16) to the Stream Ecology Group (UPV/EHU, Spain).

Published
2021
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