Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climates
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/98714 https://doi.org/10.1111/j.1466-8238.2011.00673.x |
Resumo: | 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 (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. |
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Global patterns of stream detritivore distribution: Implications for biodiversity loss in changing climatesDetritusdiversityguildlatitudinal gradientleaf littershreddersspecies richnessstream ecosystemstrophic diversityAim 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 (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.3F10-AC72-52D0 | Verónica Ferreirainfo:eu-repo/semantics/publishedVersion2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/98714http://hdl.handle.net/10316/98714https://doi.org/10.1111/j.1466-8238.2011.00673.xeng2-s2.0-84855530321cv-prod-702516Boyero, LuzPearson, Richard G.Dudgeon, DavidFerreira, VerónicaGraça, Manuel A. S.Gessner, Mark O.Boulton, Andrew J.Castela, Joséet al.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-02-08T11:55:40Zoai:estudogeral.uc.pt:10316/98714Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:16:27.656518Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
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 |
author |
Boyero, Luz |
author_facet |
Boyero, Luz Pearson, Richard G. Dudgeon, David Ferreira, Verónica Graça, Manuel A. S. Gessner, Mark O. Boulton, Andrew J. Castela, José et al. |
author_role |
author |
author2 |
Pearson, Richard G. Dudgeon, David Ferreira, Verónica Graça, Manuel A. S. Gessner, Mark O. Boulton, Andrew J. Castela, José et al. |
author2_role |
author author author author author author author author |
dc.contributor.author.fl_str_mv |
Boyero, Luz Pearson, Richard G. Dudgeon, David Ferreira, Verónica Graça, Manuel A. S. Gessner, Mark O. Boulton, Andrew J. Castela, José et al. |
dc.subject.por.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 |
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 (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. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/98714 http://hdl.handle.net/10316/98714 https://doi.org/10.1111/j.1466-8238.2011.00673.x |
url |
http://hdl.handle.net/10316/98714 https://doi.org/10.1111/j.1466-8238.2011.00673.x |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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2-s2.0-84855530321 cv-prod-702516 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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