Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates
- Autores
- Boyero, Luz; Pearson, Richard G.; Dudgeon, David; Ferreira, Verónica; Graca, Manuel A. S.; Gessner, Mark O.; Boulton, Andrew J.; Chauvet, Eric; Yule, Catherine M.; Albariño, Ricardo Javier; Ramírez, Alonso; Helson, Julie E.; Callisto, Marcos; Arunachalam, Muthukumarasamy; Chará, Julián; Figueroa, Ricardo; Mathooko, Jude M.; Goncalves Jr, José F.; Moretti, Marcelo S.; Chará Serna, Ana Marcela; Davies, Judy N.; Encalada, Andrea C.; Lamothe, Sylvain; Buria, Leonardo Mario; Castela, José; Cornejo, Aydeé; Li, Aggie O. Y.; M´Erimba, Charles; Diaz Villanueva, Veronica; Zúñiga, María del Carmen; Swan, Christopher M.; Barmuta, León A.
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 environmental 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 (α), gamma (γ) and beta (β) diversity. We also explored the effect of γ‐diversity on α‐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 γ‐ and β‐diversity showed no clear latitudinal pattern. Temperate sites showed a linear relationship between γ‐ and α‐diversity; in contrast, tropical sites showed evidence of local species saturation, which may explain why the latitudinal gradient in α‐diversity is not accompanied by a gradient in γ‐diversity. Alpha diversity was related to several local habitat characteristics, but γ‐ and β‐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.
Fil: Boyero, Luz. James Cook University; Australia. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España
Fil: Pearson, Richard G.. James Cook University; Australia
Fil: Dudgeon, David. University of Hong Kong; China
Fil: Ferreira, Verónica. Universidad de Coimbra; Portugal
Fil: Graca, Manuel A. S.. Universidad de Coimbra; Portugal
Fil: Gessner, Mark O.. Swiss Federal Institute of Aquatic Science and Technology; Suiza
Fil: Boulton, Andrew J.. University of New England; Australia
Fil: Chauvet, Eric. Université de Toulouse; Francia
Fil: Yule, Catherine M.. Monash University; Australia
Fil: Albariño, Ricardo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Ramírez, Alonso. Universidad de Puerto Rico; Puerto Rico
Fil: Helson, Julie E.. University of Toronto; Canadá
Fil: Callisto, Marcos. Universidade Federal de Minas Gerais; Brasil
Fil: Arunachalam, Muthukumarasamy. Manonmainam Sundaranar University; India
Fil: Chará, Julián. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; Colombia
Fil: Figueroa, Ricardo. Universidad de Concepción; Chile
Fil: Mathooko, Jude M.. Egerton University; Kenia
Fil: Goncalves Jr, José F.. Universidade Federal de Minas Gerais; Brasil
Fil: Moretti, Marcelo S.. Universidade Federal de Minas Gerais; Brasil
Fil: Chará Serna, Ana Marcela. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; Colombia
Fil: Davies, Judy N.. University of New England; Australia
Fil: Encalada, Andrea C.. Universidad de Coimbra; Portugal
Fil: Lamothe, Sylvain. Université de Toulouse; Francia
Fil: Buria, Leonardo Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Castela, José. Universidad de Coimbra; Portugal
Fil: Cornejo, Aydeé. Universidad de Panamá; Panamá
Fil: Li, Aggie O. Y.. University of Hong Kong; China
Fil: M´Erimba, Charles. Egerton University; Kenia
Fil: Diaz Villanueva, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Zúñiga, María del Carmen. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; Colombia
Fil: Swan, Christopher M.. University of Maryland; Estados Unidos
Fil: Barmuta, León A.. University of Tasmania; Australia - Materia
-
Detritus
Diversity
Guild
Latitudinal Gradient
Leaf Litter
Shredders
Species Richness
Stream Ecosystems
Trophic Diversity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/80674
Ver los metadatos del registro completo
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Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climatesBoyero, LuzPearson, Richard G.Dudgeon, DavidFerreira, VerónicaGraca, Manuel A. S.Gessner, Mark O.Boulton, Andrew J.Chauvet, EricYule, Catherine M.Albariño, Ricardo JavierRamírez, AlonsoHelson, Julie E.Callisto, MarcosArunachalam, MuthukumarasamyChará, JuliánFigueroa, RicardoMathooko, Jude M.Goncalves Jr, José F.Moretti, Marcelo S.Chará Serna, Ana MarcelaDavies, Judy N.Encalada, Andrea C.Lamothe, SylvainBuria, Leonardo MarioCastela, JoséCornejo, AydeéLi, Aggie O. Y.M´Erimba, CharlesDiaz Villanueva, VeronicaZúñiga, María del CarmenSwan, Christopher M.Barmuta, León A.DetritusDiversityGuildLatitudinal GradientLeaf LitterShreddersSpecies RichnessStream EcosystemsTrophic Diversityhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Aim: 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 environmental 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 (α), gamma (γ) and beta (β) diversity. We also explored the effect of γ‐diversity on α‐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 γ‐ and β‐diversity showed no clear latitudinal pattern. Temperate sites showed a linear relationship between γ‐ and α‐diversity; in contrast, tropical sites showed evidence of local species saturation, which may explain why the latitudinal gradient in α‐diversity is not accompanied by a gradient in γ‐diversity. Alpha diversity was related to several local habitat characteristics, but γ‐ and β‐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.Fil: Boyero, Luz. James Cook University; Australia. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; EspañaFil: Pearson, Richard G.. James Cook University; AustraliaFil: Dudgeon, David. University of Hong Kong; ChinaFil: Ferreira, Verónica. Universidad de Coimbra; PortugalFil: Graca, Manuel A. S.. Universidad de Coimbra; PortugalFil: Gessner, Mark O.. Swiss Federal Institute of Aquatic Science and Technology; SuizaFil: Boulton, Andrew J.. University of New England; AustraliaFil: Chauvet, Eric. Université de Toulouse; FranciaFil: Yule, Catherine M.. Monash University; AustraliaFil: Albariño, Ricardo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Ramírez, Alonso. Universidad de Puerto Rico; Puerto RicoFil: Helson, Julie E.. University of Toronto; CanadáFil: Callisto, Marcos. Universidade Federal de Minas Gerais; BrasilFil: Arunachalam, Muthukumarasamy. Manonmainam Sundaranar University; IndiaFil: Chará, Julián. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; ColombiaFil: Figueroa, Ricardo. Universidad de Concepción; ChileFil: Mathooko, Jude M.. Egerton University; KeniaFil: Goncalves Jr, José F.. Universidade Federal de Minas Gerais; BrasilFil: Moretti, Marcelo S.. Universidade Federal de Minas Gerais; BrasilFil: Chará Serna, Ana Marcela. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; ColombiaFil: Davies, Judy N.. University of New England; AustraliaFil: Encalada, Andrea C.. Universidad de Coimbra; PortugalFil: Lamothe, Sylvain. Université de Toulouse; FranciaFil: Buria, Leonardo Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Castela, José. Universidad de Coimbra; PortugalFil: Cornejo, Aydeé. Universidad de Panamá; PanamáFil: Li, Aggie O. Y.. University of Hong Kong; ChinaFil: M´Erimba, Charles. Egerton University; KeniaFil: Diaz Villanueva, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Zúñiga, María del Carmen. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; ColombiaFil: Swan, Christopher M.. University of Maryland; Estados UnidosFil: Barmuta, León A.. University of Tasmania; AustraliaWiley Blackwell Publishing, Inc2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80674Boyero, Luz; Pearson, Richard G.; Dudgeon, David; Ferreira, Verónica; Graca, Manuel A. S.; et al.; Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates; Wiley Blackwell Publishing, Inc; Global Ecology and Biogeography; 21; 2; 2-2012; 134-1411466-822X1466-8238CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1466-8238.2011.00673.xinfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1466-8238.2011.00673.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:11:07Zoai:ri.conicet.gov.ar:11336/80674instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:11:08.155CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| title |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| spellingShingle |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates Boyero, Luz Detritus Diversity Guild Latitudinal Gradient Leaf Litter Shredders Species Richness Stream Ecosystems Trophic Diversity |
| title_short |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| title_full |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| title_fullStr |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| title_full_unstemmed |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| title_sort |
Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates |
| dc.creator.none.fl_str_mv |
Boyero, Luz Pearson, Richard G. Dudgeon, David Ferreira, Verónica Graca, Manuel A. S. Gessner, Mark O. Boulton, Andrew J. Chauvet, Eric Yule, Catherine M. Albariño, Ricardo Javier Ramírez, Alonso Helson, Julie E. Callisto, Marcos Arunachalam, Muthukumarasamy Chará, Julián Figueroa, Ricardo Mathooko, Jude M. Goncalves Jr, José F. Moretti, Marcelo S. Chará Serna, Ana Marcela Davies, Judy N. Encalada, Andrea C. Lamothe, Sylvain Buria, Leonardo Mario Castela, José Cornejo, Aydeé Li, Aggie O. Y. M´Erimba, Charles Diaz Villanueva, Veronica Zúñiga, María del Carmen Swan, Christopher M. Barmuta, León A. |
| author |
Boyero, Luz |
| author_facet |
Boyero, Luz Pearson, Richard G. Dudgeon, David Ferreira, Verónica Graca, Manuel A. S. Gessner, Mark O. Boulton, Andrew J. Chauvet, Eric Yule, Catherine M. Albariño, Ricardo Javier Ramírez, Alonso Helson, Julie E. Callisto, Marcos Arunachalam, Muthukumarasamy Chará, Julián Figueroa, Ricardo Mathooko, Jude M. Goncalves Jr, José F. Moretti, Marcelo S. Chará Serna, Ana Marcela Davies, Judy N. Encalada, Andrea C. Lamothe, Sylvain Buria, Leonardo Mario Castela, José Cornejo, Aydeé Li, Aggie O. Y. M´Erimba, Charles Diaz Villanueva, Veronica Zúñiga, María del Carmen Swan, Christopher M. Barmuta, León A. |
| author_role |
author |
| author2 |
Pearson, Richard G. Dudgeon, David Ferreira, Verónica Graca, Manuel A. S. Gessner, Mark O. Boulton, Andrew J. Chauvet, Eric Yule, Catherine M. Albariño, Ricardo Javier Ramírez, Alonso Helson, Julie E. Callisto, Marcos Arunachalam, Muthukumarasamy Chará, Julián Figueroa, Ricardo Mathooko, Jude M. Goncalves Jr, José F. Moretti, Marcelo S. Chará Serna, Ana Marcela Davies, Judy N. Encalada, Andrea C. Lamothe, Sylvain Buria, Leonardo Mario Castela, José Cornejo, Aydeé Li, Aggie O. Y. M´Erimba, Charles Diaz Villanueva, Veronica Zúñiga, María del Carmen Swan, Christopher M. Barmuta, León A. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Detritus Diversity Guild Latitudinal Gradient Leaf Litter Shredders Species Richness Stream Ecosystems Trophic Diversity |
| topic |
Detritus Diversity Guild Latitudinal Gradient Leaf Litter Shredders Species Richness Stream Ecosystems Trophic Diversity |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
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 environmental 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 (α), gamma (γ) and beta (β) diversity. We also explored the effect of γ‐diversity on α‐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 γ‐ and β‐diversity showed no clear latitudinal pattern. Temperate sites showed a linear relationship between γ‐ and α‐diversity; in contrast, tropical sites showed evidence of local species saturation, which may explain why the latitudinal gradient in α‐diversity is not accompanied by a gradient in γ‐diversity. Alpha diversity was related to several local habitat characteristics, but γ‐ and β‐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. Fil: Boyero, Luz. James Cook University; Australia. Consejo Superior de Investigaciones Científicas. Estación Biológica de Doñana; España Fil: Pearson, Richard G.. James Cook University; Australia Fil: Dudgeon, David. University of Hong Kong; China Fil: Ferreira, Verónica. Universidad de Coimbra; Portugal Fil: Graca, Manuel A. S.. Universidad de Coimbra; Portugal Fil: Gessner, Mark O.. Swiss Federal Institute of Aquatic Science and Technology; Suiza Fil: Boulton, Andrew J.. University of New England; Australia Fil: Chauvet, Eric. Université de Toulouse; Francia Fil: Yule, Catherine M.. Monash University; Australia Fil: Albariño, Ricardo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Ramírez, Alonso. Universidad de Puerto Rico; Puerto Rico Fil: Helson, Julie E.. University of Toronto; Canadá Fil: Callisto, Marcos. Universidade Federal de Minas Gerais; Brasil Fil: Arunachalam, Muthukumarasamy. Manonmainam Sundaranar University; India Fil: Chará, Julián. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; Colombia Fil: Figueroa, Ricardo. Universidad de Concepción; Chile Fil: Mathooko, Jude M.. Egerton University; Kenia Fil: Goncalves Jr, José F.. Universidade Federal de Minas Gerais; Brasil Fil: Moretti, Marcelo S.. Universidade Federal de Minas Gerais; Brasil Fil: Chará Serna, Ana Marcela. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; Colombia Fil: Davies, Judy N.. University of New England; Australia Fil: Encalada, Andrea C.. Universidad de Coimbra; Portugal Fil: Lamothe, Sylvain. Université de Toulouse; Francia Fil: Buria, Leonardo Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Castela, José. Universidad de Coimbra; Portugal Fil: Cornejo, Aydeé. Universidad de Panamá; Panamá Fil: Li, Aggie O. Y.. University of Hong Kong; China Fil: M´Erimba, Charles. Egerton University; Kenia Fil: Diaz Villanueva, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina Fil: Zúñiga, María del Carmen. Centro para la Investigación en Sistemas Sostenibles de Producción Agropecuaria; Colombia. Centro de Investigaciones y Estudios en Biodiversidad y Recursos Genéticos; Colombia Fil: Swan, Christopher M.. University of Maryland; Estados Unidos Fil: Barmuta, León A.. University of Tasmania; Australia |
| description |
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 environmental 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 (α), gamma (γ) and beta (β) diversity. We also explored the effect of γ‐diversity on α‐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 γ‐ and β‐diversity showed no clear latitudinal pattern. Temperate sites showed a linear relationship between γ‐ and α‐diversity; in contrast, tropical sites showed evidence of local species saturation, which may explain why the latitudinal gradient in α‐diversity is not accompanied by a gradient in γ‐diversity. Alpha diversity was related to several local habitat characteristics, but γ‐ and β‐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. |
| publishDate |
2012 |
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2012-02 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/80674 Boyero, Luz; Pearson, Richard G.; Dudgeon, David; Ferreira, Verónica; Graca, Manuel A. S.; et al.; Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates; Wiley Blackwell Publishing, Inc; Global Ecology and Biogeography; 21; 2; 2-2012; 134-141 1466-822X 1466-8238 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/80674 |
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Boyero, Luz; Pearson, Richard G.; Dudgeon, David; Ferreira, Verónica; Graca, Manuel A. S.; et al.; Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates; Wiley Blackwell Publishing, Inc; Global Ecology and Biogeography; 21; 2; 2-2012; 134-141 1466-822X 1466-8238 CONICET Digital CONICET |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1466-8238.2011.00673.x info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1466-8238.2011.00673.x |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf |
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Wiley Blackwell Publishing, Inc |
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Wiley Blackwell Publishing, Inc |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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