Copepod assemblages in a highly complex hydrographic region

Community structure and diversity patterns of planktonic copepods were investigated for the Southwestern Atlantic Ocean between 34 and 41°S. Our objectives were (1) to define copepod assemblages, (2) to accurately identify their association to different water masses/hydrodynamic regimes, (3) to char...

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Detalles Bibliográficos
Autores principales: Berasategui, A.D., Menu Marque, S., Gómez-Erache, M., Ramírez, F.C., Mianzan, H.W., Acha, E.M.
Formato: JOUR
Materias:
Assemblages
Beta diversity
Brazil-Malvinas Confluence
Community structure
Copepoda
Fronts
Río de la Plata
Southwestern Atlantic (34-41°S)
community structure
zooplankton
Atlantic Ocean
Atlantic Ocean (Southwest)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02727714_v66_n3-4_p483_Berasategui
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02727714_v66_n3-4_p483_Berasategui
record_format dspace
spelling todo:paper_02727714_v66_n3-4_p483_Berasategui2023-10-03T15:15:21Z Copepod assemblages in a highly complex hydrographic region Berasategui, A.D. Menu Marque, S. Gómez-Erache, M. Ramírez, F.C. Mianzan, H.W. Acha, E.M. Assemblages Beta diversity Brazil-Malvinas Confluence Community structure Copepoda Fronts Río de la Plata Southwestern Atlantic (34-41°S) community structure zooplankton Atlantic Ocean Atlantic Ocean (Southwest) Copepoda Community structure and diversity patterns of planktonic copepods were investigated for the Southwestern Atlantic Ocean between 34 and 41°S. Our objectives were (1) to define copepod assemblages, (2) to accurately identify their association to different water masses/hydrodynamic regimes, (3) to characterize the assemblages in terms of their community structure, and (4) to test if frontal boundaries between water masses separate copepod assemblages. Biogeographic patterns were investigated using multivariate analysis (cluster and ANOSIM analyses). Biodiversity patterns were examined using different univariate indexes (point species richness and taxonomic distinctness). Five regions of similar copepod assemblages were defined for our study area each one corresponding to different environments (freshwater, estuarine, continental shelf, Malvinas and Brazil current assemblages). These assemblages have major community structure differences. In spite of the complex oceanographic scenario of our study area, that can lead us to expect a pattern of copepod communities with diffuse boundaries, we found a strong spatial correspondence between these limits and the presence of permanent frontal structures. © 2005 Elsevier Ltd. All rights reserved. Fil:Menu Marque, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02727714_v66_n3-4_p483_Berasategui
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Assemblages
Beta diversity
Brazil-Malvinas Confluence
Community structure
Copepoda
Fronts
Río de la Plata
Southwestern Atlantic (34-41°S)
community structure
zooplankton
Atlantic Ocean
Atlantic Ocean (Southwest)
Copepoda
spellingShingle Assemblages
Beta diversity
Brazil-Malvinas Confluence
Community structure
Copepoda
Fronts
Río de la Plata
Southwestern Atlantic (34-41°S)
community structure
zooplankton
Atlantic Ocean
Atlantic Ocean (Southwest)
Copepoda
Berasategui, A.D.
Menu Marque, S.
Gómez-Erache, M.
Ramírez, F.C.
Mianzan, H.W.
Acha, E.M.
Copepod assemblages in a highly complex hydrographic region
topic_facet Assemblages
Beta diversity
Brazil-Malvinas Confluence
Community structure
Copepoda
Fronts
Río de la Plata
Southwestern Atlantic (34-41°S)
community structure
zooplankton
Atlantic Ocean
Atlantic Ocean (Southwest)
Copepoda
description Community structure and diversity patterns of planktonic copepods were investigated for the Southwestern Atlantic Ocean between 34 and 41°S. Our objectives were (1) to define copepod assemblages, (2) to accurately identify their association to different water masses/hydrodynamic regimes, (3) to characterize the assemblages in terms of their community structure, and (4) to test if frontal boundaries between water masses separate copepod assemblages. Biogeographic patterns were investigated using multivariate analysis (cluster and ANOSIM analyses). Biodiversity patterns were examined using different univariate indexes (point species richness and taxonomic distinctness). Five regions of similar copepod assemblages were defined for our study area each one corresponding to different environments (freshwater, estuarine, continental shelf, Malvinas and Brazil current assemblages). These assemblages have major community structure differences. In spite of the complex oceanographic scenario of our study area, that can lead us to expect a pattern of copepod communities with diffuse boundaries, we found a strong spatial correspondence between these limits and the presence of permanent frontal structures. © 2005 Elsevier Ltd. All rights reserved.
format JOUR
author Berasategui, A.D.
Menu Marque, S.
Gómez-Erache, M.
Ramírez, F.C.
Mianzan, H.W.
Acha, E.M.
author_facet Berasategui, A.D.
Menu Marque, S.
Gómez-Erache, M.
Ramírez, F.C.
Mianzan, H.W.
Acha, E.M.
author_sort Berasategui, A.D.
title Copepod assemblages in a highly complex hydrographic region
title_short Copepod assemblages in a highly complex hydrographic region
title_full Copepod assemblages in a highly complex hydrographic region
title_fullStr Copepod assemblages in a highly complex hydrographic region
title_full_unstemmed Copepod assemblages in a highly complex hydrographic region
title_sort copepod assemblages in a highly complex hydrographic region
url http://hdl.handle.net/20.500.12110/paper_02727714_v66_n3-4_p483_Berasategui
work_keys_str_mv AT berasateguiad copepodassemblagesinahighlycomplexhydrographicregion
AT menumarques copepodassemblagesinahighlycomplexhydrographicregion
AT gomezerachem copepodassemblagesinahighlycomplexhydrographicregion
AT ramirezfc copepodassemblagesinahighlycomplexhydrographicregion
AT mianzanhw copepodassemblagesinahighlycomplexhydrographicregion
AT achaem copepodassemblagesinahighlycomplexhydrographicregion
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