Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information?
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/6582 |
Resumo: | With the implementation of the European Water Framework Directive there is the need to develop assessment tools based on biological data, which are adequate for all European aquatic systems. Macrofauna communities have traditionally been used to assess and evaluate ecological integrity. However, meiofauna communities can also suitably reflect the ecological conditions present in a particular system. Free-living nematodes are the dominant fraction of meiofauna communities. Their importance in the nutrients cycle is known and their use as biological indicators has been registered worldwide. Nevertheless, the outputs given by the study of nematodes communities in the assessment of quality in estuarine systems are poor, compared with those given by macrobenthic assemblages. The main objective of this study was to examine spatial and temporal variations of density and diversity of nematodes and macrofauna communities and to understand how diversity indices were influenced by season and by “target” community. The questions addressed in this study were 1) which environmental variables were the most important in influencing the distribution of the communities? and 2) did free-living nematodes and macrofauna assemblages provide comparable ecological assessment information? Differences between the ecological conditions were detected considering both communities, with nematodes assemblages presenting a higher quality status. Besides spatial variations, seasonal differences were also recorded for both communities. Probably, these seasonal changes could be related with recruitment events and other population processes, which in turn affected the diversity indices. Future research should focus on defining the best sampling period and exploring the reasons behind different ecological assessments provided by both communities (e.g. distinct response times). |
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Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information?subtidalNematodesmacrofaunaassess benthic conditionWith the implementation of the European Water Framework Directive there is the need to develop assessment tools based on biological data, which are adequate for all European aquatic systems. Macrofauna communities have traditionally been used to assess and evaluate ecological integrity. However, meiofauna communities can also suitably reflect the ecological conditions present in a particular system. Free-living nematodes are the dominant fraction of meiofauna communities. Their importance in the nutrients cycle is known and their use as biological indicators has been registered worldwide. Nevertheless, the outputs given by the study of nematodes communities in the assessment of quality in estuarine systems are poor, compared with those given by macrobenthic assemblages. The main objective of this study was to examine spatial and temporal variations of density and diversity of nematodes and macrofauna communities and to understand how diversity indices were influenced by season and by “target” community. The questions addressed in this study were 1) which environmental variables were the most important in influencing the distribution of the communities? and 2) did free-living nematodes and macrofauna assemblages provide comparable ecological assessment information? Differences between the ecological conditions were detected considering both communities, with nematodes assemblages presenting a higher quality status. Besides spatial variations, seasonal differences were also recorded for both communities. Probably, these seasonal changes could be related with recruitment events and other population processes, which in turn affected the diversity indices. Future research should focus on defining the best sampling period and exploring the reasons behind different ecological assessments provided by both communities (e.g. distinct response times).ECSA 47 Symposium Book abstracts2012-12-06T20:12:59Z2012-12-062010-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/6582http://hdl.handle.net/10174/6582porECSA 47 Symposium Book abstracts, 14-19 September 2010, Figueira da Foz, Portugal p 43simnaonaoalves.anasofia0@gmail.comhadao@uevora.ptndndndndjcmimar@ci.uc.pt221Alves, AnaAdão, HelenaPatricio, J.Neto, J. M.Vinagre, P.Verissimo, H.Marques, J. 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:RCAAP2024-01-03T18:45:17Zoai:dspace.uevora.pt:10174/6582Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:00:56.978988Repositório 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 |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
title |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
spellingShingle |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? Alves, Ana subtidal Nematodes macrofauna assess benthic condition |
title_short |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
title_full |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
title_fullStr |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
title_full_unstemmed |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
title_sort |
Seasonal and spatial variability of nematodes and macrofauna assemblages in the Mondego estuary: can these communities provide comparable ecological assessment information? |
author |
Alves, Ana |
author_facet |
Alves, Ana Adão, Helena Patricio, J. Neto, J. M. Vinagre, P. Verissimo, H. Marques, J. C. |
author_role |
author |
author2 |
Adão, Helena Patricio, J. Neto, J. M. Vinagre, P. Verissimo, H. Marques, J. C. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Alves, Ana Adão, Helena Patricio, J. Neto, J. M. Vinagre, P. Verissimo, H. Marques, J. C. |
dc.subject.por.fl_str_mv |
subtidal Nematodes macrofauna assess benthic condition |
topic |
subtidal Nematodes macrofauna assess benthic condition |
description |
With the implementation of the European Water Framework Directive there is the need to develop assessment tools based on biological data, which are adequate for all European aquatic systems. Macrofauna communities have traditionally been used to assess and evaluate ecological integrity. However, meiofauna communities can also suitably reflect the ecological conditions present in a particular system. Free-living nematodes are the dominant fraction of meiofauna communities. Their importance in the nutrients cycle is known and their use as biological indicators has been registered worldwide. Nevertheless, the outputs given by the study of nematodes communities in the assessment of quality in estuarine systems are poor, compared with those given by macrobenthic assemblages. The main objective of this study was to examine spatial and temporal variations of density and diversity of nematodes and macrofauna communities and to understand how diversity indices were influenced by season and by “target” community. The questions addressed in this study were 1) which environmental variables were the most important in influencing the distribution of the communities? and 2) did free-living nematodes and macrofauna assemblages provide comparable ecological assessment information? Differences between the ecological conditions were detected considering both communities, with nematodes assemblages presenting a higher quality status. Besides spatial variations, seasonal differences were also recorded for both communities. Probably, these seasonal changes could be related with recruitment events and other population processes, which in turn affected the diversity indices. Future research should focus on defining the best sampling period and exploring the reasons behind different ecological assessments provided by both communities (e.g. distinct response times). |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01T00:00:00Z 2012-12-06T20:12:59Z 2012-12-06 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/6582 http://hdl.handle.net/10174/6582 |
url |
http://hdl.handle.net/10174/6582 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
ECSA 47 Symposium Book abstracts, 14-19 September 2010, Figueira da Foz, Portugal p 43 sim nao nao alves.anasofia0@gmail.com hadao@uevora.pt nd nd nd nd jcmimar@ci.uc.pt 221 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
ECSA 47 Symposium Book abstracts |
publisher.none.fl_str_mv |
ECSA 47 Symposium Book abstracts |
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 |
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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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1799136492605407232 |