Global patterns of distribution in stream detritivores: implications for biodiversity loss in changing climates

Autor: Boyero, Luz, Pearson, Richard G., Dudgeon, David, Ferreira, Verónica, Graça, Manuel A. S., Gessner, Mark O., Boulton, Andrew J., Chauvet, Eric, Yule, Catherine M., Albariño, Ricardo J., Ramírez, Alonso, Helson, Julie E., Callisto, Marcos, Arunachalam, Muthukumarasamy, Chará, Julián, Figueroa, Ricardo, Mathooko, Jude M., Gonçalves, José F. Jr, Moretti, Marcelo S., Chará-Serna, Ana Marcela, Davies, Judy N., Encalada, Andrea, Lamothe, Sylvain, Buria, Leonardo M., Castela, José, Cornejo, Aydeé, Li, Aggie O. Y., M'Erimba, Charles, Villanueva, Verónica Díaz, Zúñiga, Maria Del Carmen, Swan, Christopher M., Barmuta, Leon A.
Přispěvatelé: Centre National de la Recherche Scientifique - CNRS (FRANCE), Consejo Superior de Investigaciones Científicas - CSIC (SPAIN), Universidade de Coimbra (PORTUGAL), University of Hong Kong - HKU (CHINA), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), James Cook University - JCU (AUSTRALIA), Monash University (MALAYSIA), Universidad de Concepción - UDEC (CHILE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), University of Maryland (USA), University of Toronto (CANADA), Centro para la investigaciòn en Sistemas Sostenibles de producciòn agropecuaria - CIPAV (COLOMBIA), Swiss Federal Institute of Aquatic Science and Technology - EAWAG (SWITZERLAND), Egerton university (KENYA), Manonmaniam Sundaranar university (INDIA), Universidade Federal de Minas Gerais - UFMG (BRAZIL), Universidad Nacional del Comahue (ARGENTINA), University of New England - UNE (AUSTRALIA), Universidad de Panamà (PANAMA), Universidad de Puerto Rico - UPR (PUERTO RICO), Universidad San Francisco de Quito - USFQ (ECUADOR), University of Tasmania (AUSTRALIA), Marine and environmental research center - IMAR-CMA (Coimbra, Portugal), Ecosystem management (Armidale, Australia), Laboratory of limnology (Bariloche, Argentina), Laboratorio de Ecologia de Bentos (Belo Horizonte, Brazil), Aquatic Systems Research Unit (Concepcion, Chile), Freshwater ecology group (Hobart, Tasmania), Institut National Polytechnique de Toulouse - INPT (FRANCE), Wetland ecology department (Seville, Espagne), Estación Biológica de Doñana (EBD), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), James Cook University (JCU), The University of Hong Kong (HKU), Marine and environmental research centre - IMAR-CMA (Coimbra, Portugal), University of Coimbra [Portugal] (UC), Swiss Federal Insitute of Aquatic Science and Technology [Dübendorf] (EAWAG), Ecosystem Management, Armidale, University of New England (UNE), Laboratoire Ecologie Fonctionnelle et Environnement (LEFE), 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 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), Université de Toulouse (UT), Monash University [Malaysia], Laboratorio de Limnología [Bariloche], Instituto Nacional de Investigaciones en Biodiversidad y Medioambiente [Bariloche] (INIBIOMA-CONICET), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Universidad Nacional del Comahue [Neuquén] (UNCOMA)-Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Universidad Nacional del Comahue [Neuquén] (UNCOMA), Institute for tropical ecosystem studies - ITES (San Juan, Puerto Rico), University of Puerto Rico (UPR), Department of biolological sciences (Toronto, Canada), University of Toronto, Laboratorio de ecologia de Bentos (Belo Horizonte, Brazil), Universidade Federal de Minas Gerais [Belo Horizonte] (UFMG), Sri Paramakalyani Centre for Environmental Sciences - SPKCES (Alwarkuruchi, India), Manonmainam Sundaranar university (INDIA, Centro para la Investigacion en sistemas Sostenibles de Produccion Agropecuaria - CIPAV (COLOMBIA), Universidad de Concepción - University of Concepcion [Chile], Department of biological sciences [Egerton], Egerton University, Universidad San Francisco de Quito (EQUATEUR), Universidad San Francisco de Quito (USFQ), University of Panama (PANAMA), Department of Geography and Environmental Systems [Baltimore], University of Maryland [Baltimore County] (UMBC), University of Maryland System-University of Maryland System, University of Tasmania [Hobart, Australia] (UTAS), James Cook university (AUSTRALIA), Laboratoire Ecologie Fonctionnelle et Environnement (ECOLAB), 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, Universidad de Concepción [Chile]
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Global Ecology and Biogeography
Global Ecology and Biogeography, 2012, vol. 21, pp.134-141. ⟨10.1111/j.1466-8238.2011.00673.x⟩
Global Ecology and Biogeography, Wiley, 2012, vol. 21, pp.134-141. ⟨10.1111/j.1466-8238.2011.00673.x⟩
ISSN: 1466-822X
Popis: International audience; Aim. We tested the hypothesis that shredder detritivores, a key trophic guild in stream ecosystems, are more diverse at higher latitudes, which has important ecological implications in the face of potential biodiversity losses that are expected as a result of climate change. We also explored the dependence of local shredder diversity on the regional species pool across latitudes, and examined the influence of environ- mental factors on shredder diversity. Location: World-wide (156 sites from 17 regions located in all inhabited continents at latitudes ranging from 67° N to 41° S). Methods: We used linear regression to examine the latitudinal variation in shredder diversity at different spatial scales: alpha (a), gamma (g) and beta (b) diversity. We also explored the effect of g-diversity on a-diversity across latitudes with regression analysis, and the possible influence of local environmental factors on shredder diversity with simple correlations. Results: Alpha diversity increased with latitude, while g- and b-diversity showed no clear latitudinal pattern. Temperate sites showed a linear relationship between g- and a-diversity; in contrast, tropical sites showed evidence of local species saturation, which may explain why the latitudinal gradient in a-diversity is not accompanied by a gradient in g-diversity. Alpha diversity was related to several local habitat characteristics, but g- and b-diversity were not related to any of the environmental factors measured. Main conclusions: Our results indicate that global patterns of shredder diversity are complex and depend on spatial scale. However, we can draw several conclusions that have important ecological implications. Alpha diversity is limited at tropical sites by local factors, implying a higher risk of loss of key species or the whole shredder guild (the latter implying the loss of trophic diversity). Even if regional species pools are not particularly species poor in the tropics, colonization from adjacent sites may be limited. Moreover, many shredder species belong to cool-adapted taxa that may be close to their thermal maxima in the tropics, which makes them more vulnerable to climate warming. Our results suggest that tropical streams require specific scientific attention and conservation efforts to prevent loss of shredder biodiversity and serious alteration of ecosystem processes.
Databáze: OpenAIRE
Externí odkaz: