Effect of experimental and seasonal warming on litter decomposition in a temperate stream
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/10316/25602 https://doi.org/10.1007/s00027-013-0322-7 |
Resumo: | Litter decomposition, a fundamental ecosystem process in woodland streams, is potentially affected by the predicted increase in water temperature. Here, we assessed the effects of experimental and seasonal warming on oak litter decomposition and on the relative contributions of microbes and invertebrates to this process. Experimental warming (*3 C) stimulated litter decomposition in the coldest, but not in the warmest, months. This may be attributed to (1) higher temperature sensitivity of decomposition at lower ambient temperature due to temperature limitation of enzymatic activity, (2) higher relative temperature increase in winter than in warmer months, (3) existence of a previous warming period in winter, and (4) stronger stimulation of the activity of detritivores by warming in winter due to the prevalence of earlier (smaller) instars than in warmer months. The low response of litter decomposition to warming may have been due to the low nutrient availability in the study stream. The 30-day litter decomposition was stimulated over the seasonal gradient (monthly mean temperature: 6–16 C), which may be attributed to a stimulation of metabolic activities by warming and to changes in detritivore life history over the seasons. The stimulation of litter decomposition with temperature suggests that the rate of CO2 release from freshwaters will increase under global warming. However, invertebrate-driven litter decomposition was more responsive to warming than microbial-driven litter decomposition, suggesting that a larger fraction of litter carbon may be converted into secondary production and stored in the system for longer periods. |
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Effect of experimental and seasonal warming on litter decomposition in a temperate streamAquatic invertebratesAquatic microbesClimate changeEcosystem functioningExperimental warmingLitter decompositionLitter decomposition, a fundamental ecosystem process in woodland streams, is potentially affected by the predicted increase in water temperature. Here, we assessed the effects of experimental and seasonal warming on oak litter decomposition and on the relative contributions of microbes and invertebrates to this process. Experimental warming (*3 C) stimulated litter decomposition in the coldest, but not in the warmest, months. This may be attributed to (1) higher temperature sensitivity of decomposition at lower ambient temperature due to temperature limitation of enzymatic activity, (2) higher relative temperature increase in winter than in warmer months, (3) existence of a previous warming period in winter, and (4) stronger stimulation of the activity of detritivores by warming in winter due to the prevalence of earlier (smaller) instars than in warmer months. The low response of litter decomposition to warming may have been due to the low nutrient availability in the study stream. The 30-day litter decomposition was stimulated over the seasonal gradient (monthly mean temperature: 6–16 C), which may be attributed to a stimulation of metabolic activities by warming and to changes in detritivore life history over the seasons. The stimulation of litter decomposition with temperature suggests that the rate of CO2 release from freshwaters will increase under global warming. However, invertebrate-driven litter decomposition was more responsive to warming than microbial-driven litter decomposition, suggesting that a larger fraction of litter carbon may be converted into secondary production and stored in the system for longer periods.This study was partially financed by the Institute of Marine Research (IMAR), the European Fund for Economic and Regional Development (FEDER) through the Program Operational Factors of Competitiveness (COMPETE), and National Funds through the Portuguese Foundation of Science and Technology (FCT) under the project ‘‘Predicting the effect of global warming on stream ecosystems’’ (PTDC/CLI/67180/2006; FCOMP-01-0124-FEDER- 007112). Financial support granted by the FCT to VF (SFRH/BPD/ 34368/2006 and SFRH/BPD/76482/2011, program POPH/FSE) is gratefully acknowledged.Springer Basel2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/25602http://hdl.handle.net/10316/25602https://doi.org/10.1007/s00027-013-0322-7enghttp://link.springer.com/article/10.1007%2Fs00027-013-0322-7Ferreira, VerónicaCanhoto, C.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:RCAAP2022-07-07T16:50:43Zoai:estudogeral.uc.pt:10316/25602Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:56:02.081231Repositório 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 |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
title |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
spellingShingle |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream Ferreira, Verónica Aquatic invertebrates Aquatic microbes Climate change Ecosystem functioning Experimental warming Litter decomposition |
title_short |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
title_full |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
title_fullStr |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
title_full_unstemmed |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
title_sort |
Effect of experimental and seasonal warming on litter decomposition in a temperate stream |
author |
Ferreira, Verónica |
author_facet |
Ferreira, Verónica Canhoto, C. |
author_role |
author |
author2 |
Canhoto, C. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Ferreira, Verónica Canhoto, C. |
dc.subject.por.fl_str_mv |
Aquatic invertebrates Aquatic microbes Climate change Ecosystem functioning Experimental warming Litter decomposition |
topic |
Aquatic invertebrates Aquatic microbes Climate change Ecosystem functioning Experimental warming Litter decomposition |
description |
Litter decomposition, a fundamental ecosystem process in woodland streams, is potentially affected by the predicted increase in water temperature. Here, we assessed the effects of experimental and seasonal warming on oak litter decomposition and on the relative contributions of microbes and invertebrates to this process. Experimental warming (*3 C) stimulated litter decomposition in the coldest, but not in the warmest, months. This may be attributed to (1) higher temperature sensitivity of decomposition at lower ambient temperature due to temperature limitation of enzymatic activity, (2) higher relative temperature increase in winter than in warmer months, (3) existence of a previous warming period in winter, and (4) stronger stimulation of the activity of detritivores by warming in winter due to the prevalence of earlier (smaller) instars than in warmer months. The low response of litter decomposition to warming may have been due to the low nutrient availability in the study stream. The 30-day litter decomposition was stimulated over the seasonal gradient (monthly mean temperature: 6–16 C), which may be attributed to a stimulation of metabolic activities by warming and to changes in detritivore life history over the seasons. The stimulation of litter decomposition with temperature suggests that the rate of CO2 release from freshwaters will increase under global warming. However, invertebrate-driven litter decomposition was more responsive to warming than microbial-driven litter decomposition, suggesting that a larger fraction of litter carbon may be converted into secondary production and stored in the system for longer periods. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
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/10316/25602 http://hdl.handle.net/10316/25602 https://doi.org/10.1007/s00027-013-0322-7 |
url |
http://hdl.handle.net/10316/25602 https://doi.org/10.1007/s00027-013-0322-7 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://link.springer.com/article/10.1007%2Fs00027-013-0322-7 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Springer Basel |
publisher.none.fl_str_mv |
Springer Basel |
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 |
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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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1799133845570715648 |