Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations

Detalhes bibliográficos
Autor(a) principal: Medeiros, Adriana O.
Data de Publicação: 2015
Outros Autores: Callisto, Marcos, Graça, Manuel A.S., Ferreira, Verónica, Rosa, Carlos A., Franca, Juliana, Eller, Ana, Rezende, Renan S., Gonçalves, J. F. Jr.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/98701
Resumo: Litter decomposition in the streams of the Brazilian Cerrado (Savannah) is generally slow. In this study, we tested the hypothesis that leaf litter decomposition is limited by low dissolved nutrient availability. We measured the decomposition of the litter of the riparian species Protium heptaphyllum in a local stream under nutrient enrichment promoted by nutrientdiffusing substrates (nutrient-enriched treatment; N and P), and under control conditions (no added nutrients). Leaves were enclosed in fine (0.5 mm) mesh bags and immersed in the stream. Replicate samples were retrieved periodically over 56 days. At the end of the experiment, leaf mass loss, associated microbial biomass (ATP and ergosterol) and fungal sporulation rates were significantly higher in nutrient-enriched bags than in control bags. These results suggest that litter decomposition in certain Cerrado streams is partially limited by the low availability of dissolved nutrients.
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spelling Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrationsMicrobial decomposersheadwaterslitter processingnutrient enrichment,savannah streamsLitter decomposition in the streams of the Brazilian Cerrado (Savannah) is generally slow. In this study, we tested the hypothesis that leaf litter decomposition is limited by low dissolved nutrient availability. We measured the decomposition of the litter of the riparian species Protium heptaphyllum in a local stream under nutrient enrichment promoted by nutrientdiffusing substrates (nutrient-enriched treatment; N and P), and under control conditions (no added nutrients). Leaves were enclosed in fine (0.5 mm) mesh bags and immersed in the stream. Replicate samples were retrieved periodically over 56 days. At the end of the experiment, leaf mass loss, associated microbial biomass (ATP and ergosterol) and fungal sporulation rates were significantly higher in nutrient-enriched bags than in control bags. These results suggest that litter decomposition in certain Cerrado streams is partially limited by the low availability of dissolved nutrients.3F10-AC72-52D0 | Verónica Ferreirainfo:eu-repo/semantics/publishedVersion2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/98701http://hdl.handle.net/10316/98701engcv-prod-702500WOS:000366881500003Medeiros, Adriana O.Callisto, MarcosGraça, Manuel A.S.Ferreira, VerónicaRosa, Carlos A.Franca, JulianaEller, AnaRezende, Renan S.Gonçalves, J. F. Jr.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:RCAAP2022-02-09T10:16:38Zoai:estudogeral.uc.pt:10316/98701Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:16:27.089230Repositório 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 Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
title Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
spellingShingle Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
Medeiros, Adriana O.
Microbial decomposers
headwaters
litter processing
nutrient enrichment,
savannah streams
title_short Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
title_full Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
title_fullStr Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
title_full_unstemmed Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
title_sort Microbial colonisation and litter decomposition in a Cerrado stream are limited by low dissolved nutrient concentrations
author Medeiros, Adriana O.
author_facet Medeiros, Adriana O.
Callisto, Marcos
Graça, Manuel A.S.
Ferreira, Verónica
Rosa, Carlos A.
Franca, Juliana
Eller, Ana
Rezende, Renan S.
Gonçalves, J. F. Jr.
author_role author
author2 Callisto, Marcos
Graça, Manuel A.S.
Ferreira, Verónica
Rosa, Carlos A.
Franca, Juliana
Eller, Ana
Rezende, Renan S.
Gonçalves, J. F. Jr.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Medeiros, Adriana O.
Callisto, Marcos
Graça, Manuel A.S.
Ferreira, Verónica
Rosa, Carlos A.
Franca, Juliana
Eller, Ana
Rezende, Renan S.
Gonçalves, J. F. Jr.
dc.subject.por.fl_str_mv Microbial decomposers
headwaters
litter processing
nutrient enrichment,
savannah streams
topic Microbial decomposers
headwaters
litter processing
nutrient enrichment,
savannah streams
description Litter decomposition in the streams of the Brazilian Cerrado (Savannah) is generally slow. In this study, we tested the hypothesis that leaf litter decomposition is limited by low dissolved nutrient availability. We measured the decomposition of the litter of the riparian species Protium heptaphyllum in a local stream under nutrient enrichment promoted by nutrientdiffusing substrates (nutrient-enriched treatment; N and P), and under control conditions (no added nutrients). Leaves were enclosed in fine (0.5 mm) mesh bags and immersed in the stream. Replicate samples were retrieved periodically over 56 days. At the end of the experiment, leaf mass loss, associated microbial biomass (ATP and ergosterol) and fungal sporulation rates were significantly higher in nutrient-enriched bags than in control bags. These results suggest that litter decomposition in certain Cerrado streams is partially limited by the low availability of dissolved nutrients.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/98701
http://hdl.handle.net/10316/98701
url http://hdl.handle.net/10316/98701
dc.language.iso.fl_str_mv eng
language eng
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