Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity
Autor(a) principal: | |
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Data de Publicação: | 2021 |
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/10316/98639 https://doi.org/10.1007/s00027-021-00810-x |
Resumo: | The efects of mixing diferent leaf litter species on litter decomposition in streams have received considerable attention in recent years. However, contrasting results have been reported and the mechanisms behind the efects of litter diversity have been poorly examined. We compared the decomposition rates and associated fungi for two contrasting litter species, when incubated individually and in mixture, at two diferent current velocities. Coarse-mesh bags with alder litter individually, oak litter individually and with a mixture of both were incubated in a forest headwater stream over 32 days, under fast or slow current velocities. We determined litter decomposition rates, microbial oxygen consumption rates, and aquatic hyphomycete sporulation rates, species richness and community composition; litter species in the mixture were processed individually. Our results provided weak evidences for diversity efects on leaf litter decomposition. Generally, litter decomposition was unafected by mixing contrasting litter species, with litter species in the mixture decomposing at the same rate as when incubated individually at both current velocities. The same pattern was observed for microbial variables. Decomposition rates and microbial colonization and activity depended primarily on the traits of the target litter species and were not afected by those of the companion species. However, litter-mixing efects were detected on oak litter at late decomposition stages under fast current velocity conditions, suggesting that both current velocity and the incubation time might infuence diversity efects on litter decomposition in streams. This fnding contributes to explain the lack of litter-mixing efects reported previously by many studies. |
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Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocityAquatic decomposersAquatic hyphomycetesFlow velocityDecomposition ratesLeaf litterDiversity efectsThe efects of mixing diferent leaf litter species on litter decomposition in streams have received considerable attention in recent years. However, contrasting results have been reported and the mechanisms behind the efects of litter diversity have been poorly examined. We compared the decomposition rates and associated fungi for two contrasting litter species, when incubated individually and in mixture, at two diferent current velocities. Coarse-mesh bags with alder litter individually, oak litter individually and with a mixture of both were incubated in a forest headwater stream over 32 days, under fast or slow current velocities. We determined litter decomposition rates, microbial oxygen consumption rates, and aquatic hyphomycete sporulation rates, species richness and community composition; litter species in the mixture were processed individually. Our results provided weak evidences for diversity efects on leaf litter decomposition. Generally, litter decomposition was unafected by mixing contrasting litter species, with litter species in the mixture decomposing at the same rate as when incubated individually at both current velocities. The same pattern was observed for microbial variables. Decomposition rates and microbial colonization and activity depended primarily on the traits of the target litter species and were not afected by those of the companion species. However, litter-mixing efects were detected on oak litter at late decomposition stages under fast current velocity conditions, suggesting that both current velocity and the incubation time might infuence diversity efects on litter decomposition in streams. This fnding contributes to explain the lack of litter-mixing efects reported previously by many studies.3F10-AC72-52D0 | Verónica Ferreirainfo:eu-repo/semantics/publishedVersion2021-06-17info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/98639http://hdl.handle.net/10316/98639https://doi.org/10.1007/s00027-021-00810-xengcv-prod-2633771Abril, MerixellMenéndez, MargaritaFerreira, Verónicainfo: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:RCAAP2022-02-10T11:34:02Zoai:estudogeral.uc.pt:10316/98639Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:16:24.985973Repositório 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 |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
title |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
spellingShingle |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity Abril, Merixell Aquatic decomposers Aquatic hyphomycetes Flow velocity Decomposition rates Leaf litter Diversity efects |
title_short |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
title_full |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
title_fullStr |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
title_full_unstemmed |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
title_sort |
Decomposition of leaf litter mixtures in streams: effects of component litter species and current velocity |
author |
Abril, Merixell |
author_facet |
Abril, Merixell Menéndez, Margarita Ferreira, Verónica |
author_role |
author |
author2 |
Menéndez, Margarita Ferreira, Verónica |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Abril, Merixell Menéndez, Margarita Ferreira, Verónica |
dc.subject.por.fl_str_mv |
Aquatic decomposers Aquatic hyphomycetes Flow velocity Decomposition rates Leaf litter Diversity efects |
topic |
Aquatic decomposers Aquatic hyphomycetes Flow velocity Decomposition rates Leaf litter Diversity efects |
description |
The efects of mixing diferent leaf litter species on litter decomposition in streams have received considerable attention in recent years. However, contrasting results have been reported and the mechanisms behind the efects of litter diversity have been poorly examined. We compared the decomposition rates and associated fungi for two contrasting litter species, when incubated individually and in mixture, at two diferent current velocities. Coarse-mesh bags with alder litter individually, oak litter individually and with a mixture of both were incubated in a forest headwater stream over 32 days, under fast or slow current velocities. We determined litter decomposition rates, microbial oxygen consumption rates, and aquatic hyphomycete sporulation rates, species richness and community composition; litter species in the mixture were processed individually. Our results provided weak evidences for diversity efects on leaf litter decomposition. Generally, litter decomposition was unafected by mixing contrasting litter species, with litter species in the mixture decomposing at the same rate as when incubated individually at both current velocities. The same pattern was observed for microbial variables. Decomposition rates and microbial colonization and activity depended primarily on the traits of the target litter species and were not afected by those of the companion species. However, litter-mixing efects were detected on oak litter at late decomposition stages under fast current velocity conditions, suggesting that both current velocity and the incubation time might infuence diversity efects on litter decomposition in streams. This fnding contributes to explain the lack of litter-mixing efects reported previously by many studies. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-17 |
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/10316/98639 http://hdl.handle.net/10316/98639 https://doi.org/10.1007/s00027-021-00810-x |
url |
http://hdl.handle.net/10316/98639 https://doi.org/10.1007/s00027-021-00810-x |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
cv-prod-2633771 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134060647284736 |