Global distribution of a key trophic guild contrasts with common latitudinal diversity patterns
Identifieur interne : 006A71 ( Main/Exploration ); précédent : 006A70; suivant : 006A72Global distribution of a key trophic guild contrasts with common latitudinal diversity patterns
Auteurs : Luz Boyero [Espagne, Australie] ; Richard G. Pearson [Australie] ; David Dudgeon [Hong Kong] ; Manuel A. S. Graca [Portugal] ; Mark O. Gessner [Suisse] ; Ricardo J. Albarino [Argentine] ; Ver Nica Ferreira [Portugal] ; Catherine M. Yule [Malaisie] ; Andrew J. Boulton [Australie] ; Muthukumarasamy Arunachalam [Inde] ; Marcos Calusto [Brésil] ; Eric Chauvet [France] ; Alonso Ramirez [États-Unis] ; Julián Chara [Colombie] ; Marcelo S. Moretti [Brésil] ; José F. Goncalves [Brésil] ; Julie E. Helson [Canada] ; Ana M. Chara-Serna [Colombie] ; Andrea C. Encalada [Portugal, Équateur] ; Judy N. Davies [Australie] ; Sylvain Lamothe [France] ; Aydeè Cornejo [Panama] ; Aggie O. Y. Li [Hong Kong] ; Leonardo M. Buria [Argentine] ; Ver Nica D. Villanueva [Argentine] ; María C. Zuniga [Colombie] ; Catherine M. Pringle [États-Unis]Source :
- Ecology : (Durham) [ 0012-9658 ] ; 2011.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
Most hypotheses explaining the general gradient of higher diversity toward the equator are implicit or explicit about greater species packing in the tropics. However, global patterns of diversity within guilds, including trophic guilds (i.e., groups of organisms that use similar food resources), are poorly known. We explored global diversity patterns of a key trophic guild in stream ecosystems, the detritivore shredders. This was motivated by the fundamental ecological role of shredders as decomposers of leaf litter and by some records pointing to low shredder diversity and abundance in the tropics, which contrasts with diversity patterns of most major taxa for which broad-scale latitudinal patterns haven been examined. Given this evidence, we hypothesized that shredders are more abundant and diverse in temperate than in tropical streams, and that this pattern is related to the higher temperatures and lower availability of high-quality leaf litter in the tropics. Our comprehensive global survey (129 stream sites from 14 regions on six continents) corroborated the expected latitudinal pattern and showed that shredder distribution (abundance, diversity and assemblage composition) was explained by a combination of factors, including water temperature (some taxa were restricted to cool waters) and biogeography (some taxa were more diverse in particular biogeographic realms). In contrast to our hypothesis, shredder diversity was unrelated to leaf toughness, but it was inversely related to litter diversity. Our findings markedly contrast with global trends of diversity for most taxa, and with the general rule of higher consumer diversity at higher levels of resource diversity. Moreover, they highlight the emerging role of temperature in understanding global patterns of diversity, which is of great relevance in the face of projected global warming.
Affiliations:
- Argentine, Australie, Brésil, Canada, Colombie, Espagne, France, Hong Kong, Inde, Malaisie, Panama, Portugal, Suisse, Équateur, États-Unis
- Andalousie, Canton de Zurich, Midi-Pyrénées, Minas Gerais, Occitanie (région administrative)
- Belo Horizonte, Toulouse, Zurich
- Université fédérale du Minas Gerais, École polytechnique fédérale de Zurich
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Box 70377, San Juan</s1><s2>Puerto Rico 00936</s2><s3>USA</s3><sZ>13 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Puerto Rico 00936</wicri:noRegion></affiliation></author><author><name sortKey="Chara, Julian" sort="Chara, Julian" uniqKey="Chara J" first="Julián" last="Chara">Julián Chara</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, CIPAV, Carrera 25 No. 6-62</s1><s2>Cali</s2><s3>COL</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="16"><s1>Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos, CIEBREG, POB 97</s1><s2>Pereira</s2><s3>COL</s3><sZ>14 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Pereira</wicri:noRegion></affiliation></author><author><name sortKey="Moretti, Marcelo S" sort="Moretti, Marcelo S" uniqKey="Moretti M" first="Marcelo S." last="Moretti">Marcelo S. Moretti</name><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Laboratório de Ecologia de Bentos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CP 486, CEP 30.161-970</s1><s2>Belo Horizonte MG</s2><s3>BRA</s3><sZ>11 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Brésil</country><placeName><region type="state">Minas Gerais</region><settlement type="city">Belo Horizonte</settlement></placeName><orgName type="university">Université fédérale du Minas Gerais</orgName></affiliation></author><author><name sortKey="Goncalves, Jose F" sort="Goncalves, Jose F" uniqKey="Goncalves J" first="José F." last="Goncalves">José F. Goncalves</name><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Laboratório de Ecologia de Bentos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CP 486, CEP 30.161-970</s1><s2>Belo Horizonte MG</s2><s3>BRA</s3><sZ>11 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Brésil</country><placeName><region type="state">Minas Gerais</region><settlement type="city">Belo Horizonte</settlement></placeName><orgName type="university">Université fédérale du Minas Gerais</orgName></affiliation></author><author><name sortKey="Helson, Julie E" sort="Helson, Julie E" uniqKey="Helson J" first="Julie E." last="Helson">Julie E. Helson</name><affiliation wicri:level="1"><inist:fA14 i1="17"><s1>Surface and Groundwater Ecology Research Group, Department of Biological Sciences, University of Toronto at Scarborough, 1265 Military Trail</s1><s2>Toronto, Ontario M1C 1A4</s2><s3>CAN</s3><sZ>17 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M1C 1A4</wicri:noRegion></affiliation></author><author><name sortKey="Chara Serna, Ana M" sort="Chara Serna, Ana M" uniqKey="Chara Serna A" first="Ana M." last="Chara-Serna">Ana M. Chara-Serna</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, CIPAV, Carrera 25 No. 6-62</s1><s2>Cali</s2><s3>COL</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="18"><s1>Departamento de Biologia, Grupo de Investigaciones Entomológicas, Universidad del Valle, Apartado Aéreo 25360</s1><s2>Cali</s2><s3>COL</s3><sZ>18 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation></author><author><name sortKey="Encalada, Andrea C" sort="Encalada, Andrea C" uniqKey="Encalada A" first="Andrea C." last="Encalada">Andrea C. Encalada</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>IMAR-CMA and Department Life Sciences, University of Coimbra</s1><s2>3001 401 Coimbra</s2><s3>PRT</s3><sZ>4 aut.</sZ><sZ>7 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>3001 401 Coimbra</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="19"><s1>Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Campus Cumbayá, P.O. Box 171200841</s1><s2>Quito</s2><s3>ECU</s3><sZ>19 aut.</sZ></inist:fA14><country>Équateur</country><wicri:noRegion>Quito</wicri:noRegion></affiliation></author><author><name sortKey="Davies, Judy N" sort="Davies, Judy N" uniqKey="Davies J" first="Judy N." last="Davies">Judy N. Davies</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Ecosystem Management, School of Environmental and Rural Science, University of New England</s1><s2>Armidale, NSW 2350</s2><s3>AUS</s3><sZ>9 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Armidale, NSW 2350</wicri:noRegion></affiliation></author><author><name sortKey="Lamothe, Sylvain" sort="Lamothe, Sylvain" uniqKey="Lamothe S" first="Sylvain" last="Lamothe">Sylvain Lamothe</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>Université de Toulouse, INP, UPS, EcoLab (Laboratoire Écologie Fonctionnelle et Environnement), 118 Route de Narbonne</s1><s2>31062 Toulouse</s2><s3>FRA</s3><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31062 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>CNRS, EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), 118 Route de Narbonne</s1><s2>31062 Toulouse</s2><s3>FRA</s3><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31062 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Cornejo, Aydee" sort="Cornejo, Aydee" uniqKey="Cornejo A" first="Aydeè" last="Cornejo">Aydeè Cornejo</name><affiliation wicri:level="1"><inist:fA14 i1="20"><s1>Sección de Entomologia, Instituto Conmemorativo Gorgas de Estudios de la Salud, Avenida Justo Arosemena y Calle 35, 0816 02593, Panama City</s1><s3>PAN</s3><sZ>22 aut.</sZ></inist:fA14><country>Panama</country><wicri:noRegion>Sección de Entomologia, Instituto Conmemorativo Gorgas de Estudios de la Salud, Avenida Justo Arosemena y Calle 35, 0816 02593, Panama City</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="21"><s1>Programa Centroamericano de Maestria en Entomologia, Universidad de Panamá, Panama City</s1><s3>PAN</s3><sZ>22 aut.</sZ></inist:fA14><country>Panama</country><wicri:noRegion>Programa Centroamericano de Maestria en Entomologia, Universidad de Panamá, Panama City</wicri:noRegion></affiliation></author><author><name sortKey="Li, Aggie O Y" sort="Li, Aggie O Y" uniqKey="Li A" first="Aggie O. Y." last="Li">Aggie O. Y. Li</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>School of Biological Sciences, The University of Hong Kong</s1><s3>HKG</s3><sZ>3 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Hong Kong</country><wicri:noRegion>School of Biological Sciences, The University of Hong Kong</wicri:noRegion></affiliation></author><author><name sortKey="Buria, Leonardo M" sort="Buria, Leonardo M" uniqKey="Buria L" first="Leonardo M." last="Buria">Leonardo M. Buria</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Laboratorio de Limnologia, INIBIOMA, Universidad Nacional del Comaltue-CONICET</s1><s2>Bariloche</s2><s3>ARG</s3><sZ>6 aut.</sZ><sZ>24 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Argentine</country><wicri:noRegion>Bariloche</wicri:noRegion></affiliation></author><author><name sortKey="Villanueva, Ver Nica D" sort="Villanueva, Ver Nica D" uniqKey="Villanueva V" first="Ver Nica D." last="Villanueva">Ver Nica D. Villanueva</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Laboratorio de Limnologia, INIBIOMA, Universidad Nacional del Comaltue-CONICET</s1><s2>Bariloche</s2><s3>ARG</s3><sZ>6 aut.</sZ><sZ>24 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Argentine</country><wicri:noRegion>Bariloche</wicri:noRegion></affiliation></author><author><name sortKey="Zuniga, Maria C" sort="Zuniga, Maria C" uniqKey="Zuniga M" first="María C." last="Zuniga">María C. Zuniga</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, CIPAV, Carrera 25 No. 6-62</s1><s2>Cali</s2><s3>COL</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation></author><author><name sortKey="Pringle, Catherine M" sort="Pringle, Catherine M" uniqKey="Pringle C" first="Catherine M." last="Pringle">Catherine M. Pringle</name><affiliation wicri:level="1"><inist:fA14 i1="22"><s1>Odum School of Ecology, The University of Georgia</s1><s2>Athens, Georgia 30602-2602</s2><s3>USA</s3><sZ>27 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Athens, Georgia 30602-2602</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">11-0410306</idno><date when="2011">2011</date><idno type="stanalyst">PASCAL 11-0410306 INIST</idno><idno type="RBID">Pascal:11-0410306</idno><idno type="wicri:Area/PascalFrancis/Corpus">001961</idno><idno type="wicri:Area/PascalFrancis/Curation">004594</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">001A60</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">001A60</idno><idno type="wicri:doubleKey">0012-9658:2011:Boyero L:global:distribution:of</idno><idno type="wicri:Area/Main/Merge">006F11</idno><idno type="wicri:Area/Main/Curation">006A71</idno><idno type="wicri:Area/Main/Exploration">006A71</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Global distribution of a key trophic guild contrasts with common latitudinal diversity patterns</title><author><name sortKey="Boyero, Luz" sort="Boyero, Luz" uniqKey="Boyero L" first="Luz" last="Boyero">Luz Boyero</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Wetland Ecology Department, Doñana Biological Station-CSIC, Avda Americo Vespucio sn/n</s1><s2>41092 Sevilla</s2><s3>ESP</s3><sZ>1 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Andalousie</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>School of Marine and Tropical Biology, James Cook University, Townsville</s1><s2>Queensland 4811</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Queensland 4811</wicri:noRegion></affiliation></author><author><name sortKey="Pearson, Richard G" sort="Pearson, Richard G" uniqKey="Pearson R" first="Richard G." last="Pearson">Richard G. Pearson</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>School of Marine and Tropical Biology, James Cook University, Townsville</s1><s2>Queensland 4811</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Queensland 4811</wicri:noRegion></affiliation></author><author><name sortKey="Dudgeon, David" sort="Dudgeon, David" uniqKey="Dudgeon D" first="David" last="Dudgeon">David Dudgeon</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>School of Biological Sciences, The University of Hong Kong</s1><s3>HKG</s3><sZ>3 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Hong Kong</country><wicri:noRegion>School of Biological Sciences, The University of Hong Kong</wicri:noRegion></affiliation></author><author><name sortKey="Graca, Manuel A S" sort="Graca, Manuel A S" uniqKey="Graca M" first="Manuel A. S." last="Graca">Manuel A. S. Graca</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>IMAR-CMA and Department Life Sciences, University of Coimbra</s1><s2>3001 401 Coimbra</s2><s3>PRT</s3><sZ>4 aut.</sZ><sZ>7 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>3001 401 Coimbra</wicri:noRegion></affiliation></author><author><name sortKey="Gessner, Mark O" sort="Gessner, Mark O" uniqKey="Gessner M" first="Mark O." last="Gessner">Mark O. Gessner</name><affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Department of Aquatic Ecology, Eawag: Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133</s1><s2>8600 Dübendorf</s2><s3>CHE</s3><sZ>5 aut.</sZ></inist:fA14><country>Suisse</country><wicri:noRegion>8600 Dübendorf</wicri:noRegion></affiliation><affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Institute of Integrative Biology (IBZ), ETH Zurich</s1><s2>8092 Zurich</s2><s3>CHE</s3><sZ>5 aut.</sZ></inist:fA14><country>Suisse</country><placeName><settlement type="city">Zurich</settlement><region nuts="3" type="region">Canton de Zurich</region></placeName><orgName type="university">École polytechnique fédérale de Zurich</orgName></affiliation></author><author><name sortKey="Albarino, Ricardo J" sort="Albarino, Ricardo J" uniqKey="Albarino R" first="Ricardo J." last="Albarino">Ricardo J. Albarino</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Laboratorio de Limnologia, INIBIOMA, Universidad Nacional del Comaltue-CONICET</s1><s2>Bariloche</s2><s3>ARG</s3><sZ>6 aut.</sZ><sZ>24 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Argentine</country><wicri:noRegion>Bariloche</wicri:noRegion></affiliation></author><author><name sortKey="Ferreira, Ver Nica" sort="Ferreira, Ver Nica" uniqKey="Ferreira V" first="Ver Nica" last="Ferreira">Ver Nica Ferreira</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>IMAR-CMA and Department Life Sciences, University of Coimbra</s1><s2>3001 401 Coimbra</s2><s3>PRT</s3><sZ>4 aut.</sZ><sZ>7 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>3001 401 Coimbra</wicri:noRegion></affiliation></author><author><name sortKey="Yule, Catherine M" sort="Yule, Catherine M" uniqKey="Yule C" first="Catherine M." last="Yule">Catherine M. Yule</name><affiliation wicri:level="1"><inist:fA14 i1="08"><s1>School of Science, Monash University, Jalan Lagoon Selatan, Bandar Sunway</s1><s2>46150, Selangor</s2><s3>MYS</s3><sZ>8 aut.</sZ></inist:fA14><country>Malaisie</country><wicri:noRegion>46150, Selangor</wicri:noRegion></affiliation></author><author><name sortKey="Boulton, Andrew J" sort="Boulton, Andrew J" uniqKey="Boulton A" first="Andrew J." last="Boulton">Andrew J. Boulton</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Ecosystem Management, School of Environmental and Rural Science, University of New England</s1><s2>Armidale, NSW 2350</s2><s3>AUS</s3><sZ>9 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Armidale, NSW 2350</wicri:noRegion></affiliation></author><author><name sortKey="Arunachalam, Muthukumarasamy" sort="Arunachalam, Muthukumarasamy" uniqKey="Arunachalam M" first="Muthukumarasamy" last="Arunachalam">Muthukumarasamy Arunachalam</name><affiliation wicri:level="1"><inist:fA14 i1="10"><s1>Sri Paramakalyani Centre for Environmental Sciences, Manonmainam Sundaranar University</s1><s2>Alwarkuruchi, Tamil Nadu</s2><s3>IND</s3><sZ>10 aut.</sZ></inist:fA14><country>Inde</country><wicri:noRegion>Alwarkuruchi, Tamil Nadu</wicri:noRegion></affiliation></author><author><name sortKey="Calusto, Marcos" sort="Calusto, Marcos" uniqKey="Calusto M" first="Marcos" last="Calusto">Marcos Calusto</name><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Laboratório de Ecologia de Bentos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CP 486, CEP 30.161-970</s1><s2>Belo Horizonte MG</s2><s3>BRA</s3><sZ>11 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Brésil</country><placeName><region type="state">Minas Gerais</region><settlement type="city">Belo Horizonte</settlement></placeName><orgName type="university">Université fédérale du Minas Gerais</orgName></affiliation></author><author><name sortKey="Chauvet, Eric" sort="Chauvet, Eric" uniqKey="Chauvet E" first="Eric" last="Chauvet">Eric Chauvet</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>Université de Toulouse, INP, UPS, EcoLab (Laboratoire Écologie Fonctionnelle et Environnement), 118 Route de Narbonne</s1><s2>31062 Toulouse</s2><s3>FRA</s3><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31062 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>CNRS, EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), 118 Route de Narbonne</s1><s2>31062 Toulouse</s2><s3>FRA</s3><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31062 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Ramirez, Alonso" sort="Ramirez, Alonso" uniqKey="Ramirez A" first="Alonso" last="Ramirez">Alonso Ramirez</name><affiliation wicri:level="1"><inist:fA14 i1="14"><s1>Institute for Tropical Ecosystem Studies, University of Puerto Rico, P.O. Box 70377, San Juan</s1><s2>Puerto Rico 00936</s2><s3>USA</s3><sZ>13 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Puerto Rico 00936</wicri:noRegion></affiliation></author><author><name sortKey="Chara, Julian" sort="Chara, Julian" uniqKey="Chara J" first="Julián" last="Chara">Julián Chara</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, CIPAV, Carrera 25 No. 6-62</s1><s2>Cali</s2><s3>COL</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="16"><s1>Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos, CIEBREG, POB 97</s1><s2>Pereira</s2><s3>COL</s3><sZ>14 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Pereira</wicri:noRegion></affiliation></author><author><name sortKey="Moretti, Marcelo S" sort="Moretti, Marcelo S" uniqKey="Moretti M" first="Marcelo S." last="Moretti">Marcelo S. Moretti</name><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Laboratório de Ecologia de Bentos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CP 486, CEP 30.161-970</s1><s2>Belo Horizonte MG</s2><s3>BRA</s3><sZ>11 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Brésil</country><placeName><region type="state">Minas Gerais</region><settlement type="city">Belo Horizonte</settlement></placeName><orgName type="university">Université fédérale du Minas Gerais</orgName></affiliation></author><author><name sortKey="Goncalves, Jose F" sort="Goncalves, Jose F" uniqKey="Goncalves J" first="José F." last="Goncalves">José F. Goncalves</name><affiliation wicri:level="4"><inist:fA14 i1="11"><s1>Laboratório de Ecologia de Bentos, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, CP 486, CEP 30.161-970</s1><s2>Belo Horizonte MG</s2><s3>BRA</s3><sZ>11 aut.</sZ><sZ>15 aut.</sZ><sZ>16 aut.</sZ></inist:fA14><country>Brésil</country><placeName><region type="state">Minas Gerais</region><settlement type="city">Belo Horizonte</settlement></placeName><orgName type="university">Université fédérale du Minas Gerais</orgName></affiliation></author><author><name sortKey="Helson, Julie E" sort="Helson, Julie E" uniqKey="Helson J" first="Julie E." last="Helson">Julie E. Helson</name><affiliation wicri:level="1"><inist:fA14 i1="17"><s1>Surface and Groundwater Ecology Research Group, Department of Biological Sciences, University of Toronto at Scarborough, 1265 Military Trail</s1><s2>Toronto, Ontario M1C 1A4</s2><s3>CAN</s3><sZ>17 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Toronto, Ontario M1C 1A4</wicri:noRegion></affiliation></author><author><name sortKey="Chara Serna, Ana M" sort="Chara Serna, Ana M" uniqKey="Chara Serna A" first="Ana M." last="Chara-Serna">Ana M. Chara-Serna</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, CIPAV, Carrera 25 No. 6-62</s1><s2>Cali</s2><s3>COL</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="18"><s1>Departamento de Biologia, Grupo de Investigaciones Entomológicas, Universidad del Valle, Apartado Aéreo 25360</s1><s2>Cali</s2><s3>COL</s3><sZ>18 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation></author><author><name sortKey="Encalada, Andrea C" sort="Encalada, Andrea C" uniqKey="Encalada A" first="Andrea C." last="Encalada">Andrea C. Encalada</name><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>IMAR-CMA and Department Life Sciences, University of Coimbra</s1><s2>3001 401 Coimbra</s2><s3>PRT</s3><sZ>4 aut.</sZ><sZ>7 aut.</sZ><sZ>19 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>3001 401 Coimbra</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="19"><s1>Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito, Campus Cumbayá, P.O. Box 171200841</s1><s2>Quito</s2><s3>ECU</s3><sZ>19 aut.</sZ></inist:fA14><country>Équateur</country><wicri:noRegion>Quito</wicri:noRegion></affiliation></author><author><name sortKey="Davies, Judy N" sort="Davies, Judy N" uniqKey="Davies J" first="Judy N." last="Davies">Judy N. Davies</name><affiliation wicri:level="1"><inist:fA14 i1="09"><s1>Ecosystem Management, School of Environmental and Rural Science, University of New England</s1><s2>Armidale, NSW 2350</s2><s3>AUS</s3><sZ>9 aut.</sZ><sZ>20 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Armidale, NSW 2350</wicri:noRegion></affiliation></author><author><name sortKey="Lamothe, Sylvain" sort="Lamothe, Sylvain" uniqKey="Lamothe S" first="Sylvain" last="Lamothe">Sylvain Lamothe</name><affiliation wicri:level="1"><inist:fA14 i1="12"><s1>Université de Toulouse, INP, UPS, EcoLab (Laboratoire Écologie Fonctionnelle et Environnement), 118 Route de Narbonne</s1><s2>31062 Toulouse</s2><s3>FRA</s3><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31062 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="13"><s1>CNRS, EcoLab (Laboratoire Ecologie Fonctionnelle et Environnement), 118 Route de Narbonne</s1><s2>31062 Toulouse</s2><s3>FRA</s3><sZ>12 aut.</sZ><sZ>21 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>31062 Toulouse</wicri:noRegion><placeName><settlement type="city">Toulouse</settlement><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region></placeName></affiliation></author><author><name sortKey="Cornejo, Aydee" sort="Cornejo, Aydee" uniqKey="Cornejo A" first="Aydeè" last="Cornejo">Aydeè Cornejo</name><affiliation wicri:level="1"><inist:fA14 i1="20"><s1>Sección de Entomologia, Instituto Conmemorativo Gorgas de Estudios de la Salud, Avenida Justo Arosemena y Calle 35, 0816 02593, Panama City</s1><s3>PAN</s3><sZ>22 aut.</sZ></inist:fA14><country>Panama</country><wicri:noRegion>Sección de Entomologia, Instituto Conmemorativo Gorgas de Estudios de la Salud, Avenida Justo Arosemena y Calle 35, 0816 02593, Panama City</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="21"><s1>Programa Centroamericano de Maestria en Entomologia, Universidad de Panamá, Panama City</s1><s3>PAN</s3><sZ>22 aut.</sZ></inist:fA14><country>Panama</country><wicri:noRegion>Programa Centroamericano de Maestria en Entomologia, Universidad de Panamá, Panama City</wicri:noRegion></affiliation></author><author><name sortKey="Li, Aggie O Y" sort="Li, Aggie O Y" uniqKey="Li A" first="Aggie O. Y." last="Li">Aggie O. Y. Li</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>School of Biological Sciences, The University of Hong Kong</s1><s3>HKG</s3><sZ>3 aut.</sZ><sZ>23 aut.</sZ></inist:fA14><country>Hong Kong</country><wicri:noRegion>School of Biological Sciences, The University of Hong Kong</wicri:noRegion></affiliation></author><author><name sortKey="Buria, Leonardo M" sort="Buria, Leonardo M" uniqKey="Buria L" first="Leonardo M." last="Buria">Leonardo M. Buria</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Laboratorio de Limnologia, INIBIOMA, Universidad Nacional del Comaltue-CONICET</s1><s2>Bariloche</s2><s3>ARG</s3><sZ>6 aut.</sZ><sZ>24 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Argentine</country><wicri:noRegion>Bariloche</wicri:noRegion></affiliation></author><author><name sortKey="Villanueva, Ver Nica D" sort="Villanueva, Ver Nica D" uniqKey="Villanueva V" first="Ver Nica D." last="Villanueva">Ver Nica D. Villanueva</name><affiliation wicri:level="1"><inist:fA14 i1="07"><s1>Laboratorio de Limnologia, INIBIOMA, Universidad Nacional del Comaltue-CONICET</s1><s2>Bariloche</s2><s3>ARG</s3><sZ>6 aut.</sZ><sZ>24 aut.</sZ><sZ>25 aut.</sZ></inist:fA14><country>Argentine</country><wicri:noRegion>Bariloche</wicri:noRegion></affiliation></author><author><name sortKey="Zuniga, Maria C" sort="Zuniga, Maria C" uniqKey="Zuniga M" first="María C." last="Zuniga">María C. Zuniga</name><affiliation wicri:level="1"><inist:fA14 i1="15"><s1>Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria, CIPAV, Carrera 25 No. 6-62</s1><s2>Cali</s2><s3>COL</s3><sZ>14 aut.</sZ><sZ>18 aut.</sZ><sZ>26 aut.</sZ></inist:fA14><country>Colombie</country><wicri:noRegion>Cali</wicri:noRegion></affiliation></author><author><name sortKey="Pringle, Catherine M" sort="Pringle, Catherine M" uniqKey="Pringle C" first="Catherine M." last="Pringle">Catherine M. Pringle</name><affiliation wicri:level="1"><inist:fA14 i1="22"><s1>Odum School of Ecology, The University of Georgia</s1><s2>Athens, Georgia 30602-2602</s2><s3>USA</s3><sZ>27 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Athens, Georgia 30602-2602</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Ecology : (Durham)</title><title level="j" type="abbreviated">Ecology : (Durh.)</title><idno type="ISSN">0012-9658</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Ecology : (Durham)</title><title level="j" type="abbreviated">Ecology : (Durh.)</title><idno type="ISSN">0012-9658</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Detritivorous</term><term>Diversity</term><term>Ecosystem</term><term>Guild</term><term>Latitude</term><term>Latitudinal gradient</term><term>Litter</term><term>Phytophagous</term><term>Spatial distribution</term><term>Stream</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Guilde</term><term>Latitude</term><term>Diversité</term><term>Répartition spatiale</term><term>Gradient latitudinal</term><term>Litière</term><term>Phytophage</term><term>Détritivore</term><term>Cours eau</term><term>Ecosystème</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Most hypotheses explaining the general gradient of higher diversity toward the equator are implicit or explicit about greater species packing in the tropics. However, global patterns of diversity within guilds, including trophic guilds (i.e., groups of organisms that use similar food resources), are poorly known. We explored global diversity patterns of a key trophic guild in stream ecosystems, the detritivore shredders. This was motivated by the fundamental ecological role of shredders as decomposers of leaf litter and by some records pointing to low shredder diversity and abundance in the tropics, which contrasts with diversity patterns of most major taxa for which broad-scale latitudinal patterns haven been examined. Given this evidence, we hypothesized that shredders are more abundant and diverse in temperate than in tropical streams, and that this pattern is related to the higher temperatures and lower availability of high-quality leaf litter in the tropics. Our comprehensive global survey (129 stream sites from 14 regions on six continents) corroborated the expected latitudinal pattern and showed that shredder distribution (abundance, diversity and assemblage composition) was explained by a combination of factors, including water temperature (some taxa were restricted to cool waters) and biogeography (some taxa were more diverse in particular biogeographic realms). In contrast to our hypothesis, shredder diversity was unrelated to leaf toughness, but it was inversely related to litter diversity. Our findings markedly contrast with global trends of diversity for most taxa, and with the general rule of higher consumer diversity at higher levels of resource diversity. Moreover, they highlight the emerging role of temperature in understanding global patterns of diversity, which is of great relevance in the face of projected global warming.</div></front></TEI><affiliations><list><country><li>Argentine</li><li>Australie</li><li>Brésil</li><li>Canada</li><li>Colombie</li><li>Espagne</li><li>France</li><li>Hong Kong</li><li>Inde</li><li>Malaisie</li><li>Panama</li><li>Portugal</li><li>Suisse</li><li>Équateur</li><li>États-Unis</li></country><region><li>Andalousie</li><li>Canton de Zurich</li><li>Midi-Pyrénées</li><li>Minas Gerais</li><li>Occitanie (région administrative)</li></region><settlement><li>Belo Horizonte</li><li>Toulouse</li><li>Zurich</li></settlement><orgName><li>Université fédérale du Minas Gerais</li><li>École polytechnique fédérale de Zurich</li></orgName></list><tree><country name="Espagne"><region name="Andalousie"><name sortKey="Boyero, Luz" sort="Boyero, Luz" uniqKey="Boyero L" first="Luz" last="Boyero">Luz Boyero</name></region></country><country name="Australie"><noRegion><name sortKey="Boyero, Luz" sort="Boyero, Luz" uniqKey="Boyero L" first="Luz" last="Boyero">Luz Boyero</name></noRegion><name sortKey="Boulton, Andrew J" sort="Boulton, Andrew J" uniqKey="Boulton A" first="Andrew J." last="Boulton">Andrew J. Boulton</name><name sortKey="Davies, Judy N" sort="Davies, Judy N" uniqKey="Davies J" first="Judy N." last="Davies">Judy N. Davies</name><name sortKey="Pearson, Richard G" sort="Pearson, Richard G" uniqKey="Pearson R" first="Richard G." last="Pearson">Richard G. Pearson</name></country><country name="Hong Kong"><noRegion><name sortKey="Dudgeon, David" sort="Dudgeon, David" uniqKey="Dudgeon D" first="David" last="Dudgeon">David Dudgeon</name></noRegion><name sortKey="Li, Aggie O Y" sort="Li, Aggie O Y" uniqKey="Li A" first="Aggie O. Y." last="Li">Aggie O. Y. Li</name></country><country name="Portugal"><noRegion><name sortKey="Graca, Manuel A S" sort="Graca, Manuel A S" uniqKey="Graca M" first="Manuel A. S." last="Graca">Manuel A. S. Graca</name></noRegion><name sortKey="Encalada, Andrea C" sort="Encalada, Andrea C" uniqKey="Encalada A" first="Andrea C." last="Encalada">Andrea C. Encalada</name><name sortKey="Ferreira, Ver Nica" sort="Ferreira, Ver Nica" uniqKey="Ferreira V" first="Ver Nica" last="Ferreira">Ver Nica Ferreira</name></country><country name="Suisse"><noRegion><name sortKey="Gessner, Mark O" sort="Gessner, Mark O" uniqKey="Gessner M" first="Mark O." last="Gessner">Mark O. Gessner</name></noRegion><name sortKey="Gessner, Mark O" sort="Gessner, Mark O" uniqKey="Gessner M" first="Mark O." last="Gessner">Mark O. Gessner</name></country><country name="Argentine"><noRegion><name sortKey="Albarino, Ricardo J" sort="Albarino, Ricardo J" uniqKey="Albarino R" first="Ricardo J." last="Albarino">Ricardo J. Albarino</name></noRegion><name sortKey="Buria, Leonardo M" sort="Buria, Leonardo M" uniqKey="Buria L" first="Leonardo M." last="Buria">Leonardo M. Buria</name><name sortKey="Villanueva, Ver Nica D" sort="Villanueva, Ver Nica D" uniqKey="Villanueva V" first="Ver Nica D." last="Villanueva">Ver Nica D. Villanueva</name></country><country name="Malaisie"><noRegion><name sortKey="Yule, Catherine M" sort="Yule, Catherine M" uniqKey="Yule C" first="Catherine M." last="Yule">Catherine M. Yule</name></noRegion></country><country name="Inde"><noRegion><name sortKey="Arunachalam, Muthukumarasamy" sort="Arunachalam, Muthukumarasamy" uniqKey="Arunachalam M" first="Muthukumarasamy" last="Arunachalam">Muthukumarasamy Arunachalam</name></noRegion></country><country name="Brésil"><region name="Minas Gerais"><name sortKey="Calusto, Marcos" sort="Calusto, Marcos" uniqKey="Calusto M" first="Marcos" last="Calusto">Marcos Calusto</name></region><name sortKey="Goncalves, Jose F" sort="Goncalves, Jose F" uniqKey="Goncalves J" first="José F." last="Goncalves">José F. Goncalves</name><name sortKey="Moretti, Marcelo S" sort="Moretti, Marcelo S" uniqKey="Moretti M" first="Marcelo S." last="Moretti">Marcelo S. Moretti</name></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Chauvet, Eric" sort="Chauvet, Eric" uniqKey="Chauvet E" first="Eric" last="Chauvet">Eric Chauvet</name></region><name sortKey="Chauvet, Eric" sort="Chauvet, Eric" uniqKey="Chauvet E" first="Eric" last="Chauvet">Eric Chauvet</name><name sortKey="Lamothe, Sylvain" sort="Lamothe, Sylvain" uniqKey="Lamothe S" first="Sylvain" last="Lamothe">Sylvain Lamothe</name><name sortKey="Lamothe, Sylvain" sort="Lamothe, Sylvain" uniqKey="Lamothe S" first="Sylvain" last="Lamothe">Sylvain Lamothe</name></country><country name="États-Unis"><noRegion><name sortKey="Ramirez, Alonso" sort="Ramirez, Alonso" uniqKey="Ramirez A" first="Alonso" last="Ramirez">Alonso Ramirez</name></noRegion><name sortKey="Pringle, Catherine M" sort="Pringle, Catherine M" uniqKey="Pringle C" first="Catherine M." last="Pringle">Catherine M. Pringle</name></country><country name="Colombie"><noRegion><name sortKey="Chara, Julian" sort="Chara, Julian" uniqKey="Chara J" first="Julián" last="Chara">Julián Chara</name></noRegion><name sortKey="Chara Serna, Ana M" sort="Chara Serna, Ana M" uniqKey="Chara Serna A" first="Ana M." last="Chara-Serna">Ana M. Chara-Serna</name><name sortKey="Chara Serna, Ana M" sort="Chara Serna, Ana M" uniqKey="Chara Serna A" first="Ana M." last="Chara-Serna">Ana M. Chara-Serna</name><name sortKey="Chara, Julian" sort="Chara, Julian" uniqKey="Chara J" first="Julián" last="Chara">Julián Chara</name><name sortKey="Zuniga, Maria C" sort="Zuniga, Maria C" uniqKey="Zuniga M" first="María C." last="Zuniga">María C. Zuniga</name></country><country name="Canada"><noRegion><name sortKey="Helson, Julie E" sort="Helson, Julie E" uniqKey="Helson J" first="Julie E." last="Helson">Julie E. Helson</name></noRegion></country><country name="Équateur"><noRegion><name sortKey="Encalada, Andrea C" sort="Encalada, Andrea C" uniqKey="Encalada A" first="Andrea C." last="Encalada">Andrea C. Encalada</name></noRegion></country><country name="Panama"><noRegion><name sortKey="Cornejo, Aydee" sort="Cornejo, Aydee" uniqKey="Cornejo A" first="Aydeè" last="Cornejo">Aydeè Cornejo</name></noRegion><name sortKey="Cornejo, Aydee" sort="Cornejo, Aydee" uniqKey="Cornejo A" first="Aydeè" last="Cornejo">Aydeè Cornejo</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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