Decomposition and nutrient release in halophytes of a Mediterranean salt marsh
Autor(a) principal: | |
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Data de Publicação: | 2011 |
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/10174/3265 https://doi.org/10.1016/j.aquabot.2011.01.001 |
Resumo: | This study dealt with the decomposition and nutrient release from the halophytes Atriplex portulacoides, Arthrocnemum macrostachyum, Limoniastrum monopetalum, and Spartina densiflora, the dominant species in the Castro Marim salt marsh, Portugal. Environmental effects on decomposition were also assessed. The study was carried out for one year using the in situ litterbag technique. S. densiflora showed a lower decomposition rate (k = 0.003 day−1) than the other study species (k = 0.005–0.009). Study species showed similar decomposition patterns, that is, the weight loss mostly occurred during the autumn–winter period (study beginning in November). This indicates that temperature in this period did not hamper the decomposition process. The decomposition rate was positively affected by the initial N concentration (r2 = 0.87, P < 0.05) and negatively by the C:N ratio (r2 = 0.86, P < 0.05) in decomposing materials. At the end of the study, S. densiflora and L. monopetalum, the species with lower initial N concentrations, retained much higher proportion of initial N (89–109%) than the others (5–14%). Also, S. densiflora with the lowest P concentration retained higher proportion of initial P (48%) than the others (5–20%). Release of K and Mg were also slower from S. densiflora and was associated with their initial low concentration in this species. The lowest Mn release was observed from A. macrostachyum and also in relation to the lowest initial concentration. Our study supports the hypothesis that decomposition patterns of marsh species are mostly associated with differences regarding their morphology and chemical composition. Given the higher resistance of S. densiflora to decomposition, its progressive spreading may result in accumulation of organic detritus overtime in invaded salt marshes. |
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Decomposition and nutrient release in halophytes of a Mediterranean salt marshSalt marshDecompositionNutrientsSpartina densifloraAtriplex portulacoidesArthrocnemum macrostachyumLimoniastrum monopetalumThis study dealt with the decomposition and nutrient release from the halophytes Atriplex portulacoides, Arthrocnemum macrostachyum, Limoniastrum monopetalum, and Spartina densiflora, the dominant species in the Castro Marim salt marsh, Portugal. Environmental effects on decomposition were also assessed. The study was carried out for one year using the in situ litterbag technique. S. densiflora showed a lower decomposition rate (k = 0.003 day−1) than the other study species (k = 0.005–0.009). Study species showed similar decomposition patterns, that is, the weight loss mostly occurred during the autumn–winter period (study beginning in November). This indicates that temperature in this period did not hamper the decomposition process. The decomposition rate was positively affected by the initial N concentration (r2 = 0.87, P < 0.05) and negatively by the C:N ratio (r2 = 0.86, P < 0.05) in decomposing materials. At the end of the study, S. densiflora and L. monopetalum, the species with lower initial N concentrations, retained much higher proportion of initial N (89–109%) than the others (5–14%). Also, S. densiflora with the lowest P concentration retained higher proportion of initial P (48%) than the others (5–20%). Release of K and Mg were also slower from S. densiflora and was associated with their initial low concentration in this species. The lowest Mn release was observed from A. macrostachyum and also in relation to the lowest initial concentration. Our study supports the hypothesis that decomposition patterns of marsh species are mostly associated with differences regarding their morphology and chemical composition. Given the higher resistance of S. densiflora to decomposition, its progressive spreading may result in accumulation of organic detritus overtime in invaded salt marshes.Elsevier2012-01-11T10:35:22Z2012-01-112011-01-12T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/3265http://hdl.handle.net/10174/3265https://doi.org/10.1016/j.aquabot.2011.01.001engAquatic Botany 94 (2011) 119–126119-126Aquatic Botany94mps@uevora.ptndndgazarini@uevora.p223Simões, Maria PaulaCalado, Maria da LuzMadeira, ManuelGazarini, Luiz Carlosinfo: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:RCAAP2024-01-03T18:40:08Zoai:dspace.uevora.pt:10174/3265Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:58:41.729196Repositório 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 and nutrient release in halophytes of a Mediterranean salt marsh |
title |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh |
spellingShingle |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh Simões, Maria Paula Salt marsh Decomposition Nutrients Spartina densiflora Atriplex portulacoides Arthrocnemum macrostachyum Limoniastrum monopetalum |
title_short |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh |
title_full |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh |
title_fullStr |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh |
title_full_unstemmed |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh |
title_sort |
Decomposition and nutrient release in halophytes of a Mediterranean salt marsh |
author |
Simões, Maria Paula |
author_facet |
Simões, Maria Paula Calado, Maria da Luz Madeira, Manuel Gazarini, Luiz Carlos |
author_role |
author |
author2 |
Calado, Maria da Luz Madeira, Manuel Gazarini, Luiz Carlos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Simões, Maria Paula Calado, Maria da Luz Madeira, Manuel Gazarini, Luiz Carlos |
dc.subject.por.fl_str_mv |
Salt marsh Decomposition Nutrients Spartina densiflora Atriplex portulacoides Arthrocnemum macrostachyum Limoniastrum monopetalum |
topic |
Salt marsh Decomposition Nutrients Spartina densiflora Atriplex portulacoides Arthrocnemum macrostachyum Limoniastrum monopetalum |
description |
This study dealt with the decomposition and nutrient release from the halophytes Atriplex portulacoides, Arthrocnemum macrostachyum, Limoniastrum monopetalum, and Spartina densiflora, the dominant species in the Castro Marim salt marsh, Portugal. Environmental effects on decomposition were also assessed. The study was carried out for one year using the in situ litterbag technique. S. densiflora showed a lower decomposition rate (k = 0.003 day−1) than the other study species (k = 0.005–0.009). Study species showed similar decomposition patterns, that is, the weight loss mostly occurred during the autumn–winter period (study beginning in November). This indicates that temperature in this period did not hamper the decomposition process. The decomposition rate was positively affected by the initial N concentration (r2 = 0.87, P < 0.05) and negatively by the C:N ratio (r2 = 0.86, P < 0.05) in decomposing materials. At the end of the study, S. densiflora and L. monopetalum, the species with lower initial N concentrations, retained much higher proportion of initial N (89–109%) than the others (5–14%). Also, S. densiflora with the lowest P concentration retained higher proportion of initial P (48%) than the others (5–20%). Release of K and Mg were also slower from S. densiflora and was associated with their initial low concentration in this species. The lowest Mn release was observed from A. macrostachyum and also in relation to the lowest initial concentration. Our study supports the hypothesis that decomposition patterns of marsh species are mostly associated with differences regarding their morphology and chemical composition. Given the higher resistance of S. densiflora to decomposition, its progressive spreading may result in accumulation of organic detritus overtime in invaded salt marshes. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-12T00:00:00Z 2012-01-11T10:35:22Z 2012-01-11 |
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/10174/3265 http://hdl.handle.net/10174/3265 https://doi.org/10.1016/j.aquabot.2011.01.001 |
url |
http://hdl.handle.net/10174/3265 https://doi.org/10.1016/j.aquabot.2011.01.001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aquatic Botany 94 (2011) 119–126 119-126 Aquatic Botany 94 mps@uevora.pt nd nd gazarini@uevora.p 223 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
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1799136470210969600 |