Biotic and abiotic variables influencing plant litter breakdown in streams: a global study

Detalhes bibliográficos
Autor(a) principal: Boyero, Luz
Data de Publicação: 2016
Outros Autores: Pearson, Richard G., Hui, Cang, Gessner, Mark O., Perez, Javier, Alexandrou, Markos A., Graça, Manuel A. S., Ferreira, Verónica, et al.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/98686
https://doi.org/10.1098/rspb.2015.2664
Resumo: Plant litter breakdown is a key ecological process in terrestrial and freshwater ecosystems. Streams and rivers, in particular, contribute substantially to global carbon fluxes. However, there is little information available on the relative roles of different drivers of plant litter breakdown in fresh waters, particularly at large scales. We present a global-scale study of litter breakdown in streams to compare the roles of biotic, climatic and other environmental factors on breakdown rates. We conducted an experiment in 24 streams encompassing latitudes from 47.88 N to 42.88 S, using litter mixtures of local species differing in quality and phylogenetic diversity (PD), and alder (Alnus glutinosa) to control for variation in litter traits. Our models revealed that breakdown of alder was driven by climate, with some influence of pH, whereas variation in breakdown of litter mixtures was explained mainly by litter quality and PD. Effects of litter quality and PD and stream pH were more positive at higher temperatures, indicating that different mechanisms may operate at different latitudes. These results reflect global variability caused by multiple factors, but unexplained variance points to the need for expanded global-scale comparisons.
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spelling Biotic and abiotic variables influencing plant litter breakdown in streams: a global studydecompositionlatitudinal gradientclimatelitter qualitybiodiversitydetritivore shreddersPlant litter breakdown is a key ecological process in terrestrial and freshwater ecosystems. Streams and rivers, in particular, contribute substantially to global carbon fluxes. However, there is little information available on the relative roles of different drivers of plant litter breakdown in fresh waters, particularly at large scales. We present a global-scale study of litter breakdown in streams to compare the roles of biotic, climatic and other environmental factors on breakdown rates. We conducted an experiment in 24 streams encompassing latitudes from 47.88 N to 42.88 S, using litter mixtures of local species differing in quality and phylogenetic diversity (PD), and alder (Alnus glutinosa) to control for variation in litter traits. Our models revealed that breakdown of alder was driven by climate, with some influence of pH, whereas variation in breakdown of litter mixtures was explained mainly by litter quality and PD. Effects of litter quality and PD and stream pH were more positive at higher temperatures, indicating that different mechanisms may operate at different latitudes. These results reflect global variability caused by multiple factors, but unexplained variance points to the need for expanded global-scale comparisons.3F10-AC72-52D0 | Verónica Ferreirainfo:eu-repo/semantics/publishedVersion2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/98686http://hdl.handle.net/10316/98686https://doi.org/10.1098/rspb.2015.2664engcv-prod-702499WOS:000376158600002Boyero, LuzPearson, Richard G.Hui, CangGessner, Mark O.Perez, JavierAlexandrou, Markos A.Graça, Manuel A. S.Ferreira, Verónicaet 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:RCAAP2022-02-09T12:18:12Zoai:estudogeral.uc.pt:10316/98686Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:16:26.550810Repositório 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 Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
title Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
spellingShingle Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
Boyero, Luz
decomposition
latitudinal gradient
climate
litter quality
biodiversity
detritivore shredders
title_short Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
title_full Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
title_fullStr Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
title_full_unstemmed Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
title_sort Biotic and abiotic variables influencing plant litter breakdown in streams: a global study
author Boyero, Luz
author_facet Boyero, Luz
Pearson, Richard G.
Hui, Cang
Gessner, Mark O.
Perez, Javier
Alexandrou, Markos A.
Graça, Manuel A. S.
Ferreira, Verónica
et al.
author_role author
author2 Pearson, Richard G.
Hui, Cang
Gessner, Mark O.
Perez, Javier
Alexandrou, Markos A.
Graça, Manuel A. S.
Ferreira, Verónica
et al.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Boyero, Luz
Pearson, Richard G.
Hui, Cang
Gessner, Mark O.
Perez, Javier
Alexandrou, Markos A.
Graça, Manuel A. S.
Ferreira, Verónica
et al.
dc.subject.por.fl_str_mv decomposition
latitudinal gradient
climate
litter quality
biodiversity
detritivore shredders
topic decomposition
latitudinal gradient
climate
litter quality
biodiversity
detritivore shredders
description Plant litter breakdown is a key ecological process in terrestrial and freshwater ecosystems. Streams and rivers, in particular, contribute substantially to global carbon fluxes. However, there is little information available on the relative roles of different drivers of plant litter breakdown in fresh waters, particularly at large scales. We present a global-scale study of litter breakdown in streams to compare the roles of biotic, climatic and other environmental factors on breakdown rates. We conducted an experiment in 24 streams encompassing latitudes from 47.88 N to 42.88 S, using litter mixtures of local species differing in quality and phylogenetic diversity (PD), and alder (Alnus glutinosa) to control for variation in litter traits. Our models revealed that breakdown of alder was driven by climate, with some influence of pH, whereas variation in breakdown of litter mixtures was explained mainly by litter quality and PD. Effects of litter quality and PD and stream pH were more positive at higher temperatures, indicating that different mechanisms may operate at different latitudes. These results reflect global variability caused by multiple factors, but unexplained variance points to the need for expanded global-scale comparisons.
publishDate 2016
dc.date.none.fl_str_mv 2016
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/98686
http://hdl.handle.net/10316/98686
https://doi.org/10.1098/rspb.2015.2664
url http://hdl.handle.net/10316/98686
https://doi.org/10.1098/rspb.2015.2664
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