Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf

Associations of pteropod, cladoceran, and chaetognath species were analyzed for the southern coast of Brazil in order to present a biological diagnosis of the oceanographic conditions in winter and summer. The density data from the different species were analyzed using nodal and ordination cluster t...

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Autor principal:	Resgalla Jr,Charrid
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2008
Materias:	zooplankton species associations hydrological indicators coastal water southern Brazil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2008000200009
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spelling	oai:scielo:S0718-560X20080002000092009-01-23Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian ShelfResgalla Jr,Charrid zooplankton species associations hydrological indicators coastal water southern Brazil Associations of pteropod, cladoceran, and chaetognath species were analyzed for the southern coast of Brazil in order to present a biological diagnosis of the oceanographic conditions in winter and summer. The density data from the different species were analyzed using nodal and ordination cluster techniques, linking the species associations with salinity and temperature and, consequently, with the water masses occurring in each period. Sagitta tennis and Pleopsis polyphemoides were found to characterize the coastal water and, when associated with Evadne nordmanni and Pleopsis schmackeri, differentiated between the thermal characteristics of winter and summer, respectively. The Sub-Antarctic Shelf Water was characterized by the association of Sagitta tasmanica and Limacina retroversa in winter. The Tropical Water of the Brazil current presented several different associations, with Penilia avirostris, Sagitta enflata, and Creseis virgula dominating the shelf Tropical Water and Sagitta serratodentata, Limacina trochiformis, and Evadne spinifera characterizing the oceanic Tropical Water. The Sub-tropical Water, typical of upwelling processes, was characterized by the association of the chaetognaths Sagitta decipiens and Krohnitta subtilis, both in winter and summer. The species associations defined in this study agree with others carried out in neighboring areas and in previous sampling periods, characterizing the región as the southern transition zone.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.36 n.2 20082008-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2008000200009en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	zooplankton species associations hydrological indicators coastal water southern Brazil
spellingShingle	zooplankton species associations hydrological indicators coastal water southern Brazil Resgalla Jr,Charrid Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
description	Associations of pteropod, cladoceran, and chaetognath species were analyzed for the southern coast of Brazil in order to present a biological diagnosis of the oceanographic conditions in winter and summer. The density data from the different species were analyzed using nodal and ordination cluster techniques, linking the species associations with salinity and temperature and, consequently, with the water masses occurring in each period. Sagitta tennis and Pleopsis polyphemoides were found to characterize the coastal water and, when associated with Evadne nordmanni and Pleopsis schmackeri, differentiated between the thermal characteristics of winter and summer, respectively. The Sub-Antarctic Shelf Water was characterized by the association of Sagitta tasmanica and Limacina retroversa in winter. The Tropical Water of the Brazil current presented several different associations, with Penilia avirostris, Sagitta enflata, and Creseis virgula dominating the shelf Tropical Water and Sagitta serratodentata, Limacina trochiformis, and Evadne spinifera characterizing the oceanic Tropical Water. The Sub-tropical Water, typical of upwelling processes, was characterized by the association of the chaetognaths Sagitta decipiens and Krohnitta subtilis, both in winter and summer. The species associations defined in this study agree with others carried out in neighboring areas and in previous sampling periods, characterizing the región as the southern transition zone.
author	Resgalla Jr,Charrid
author_facet	Resgalla Jr,Charrid
author_sort	Resgalla Jr,Charrid
title	Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
title_short	Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
title_full	Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
title_fullStr	Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
title_full_unstemmed	Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
title_sort	pteropoda, cladocera, and chaetognatha associations as hydrological indicators in the southern brazilian shelf
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2008000200009
work_keys_str_mv	AT resgallajrcharrid pteropodacladoceraandchaetognathaassociationsashydrologicalindicatorsinthesouthernbrazilianshelf
_version_	1714205059659595776

Pteropoda, Cladocera, and Chaetognatha associations as hydrological indicators in the southern Brazilian Shelf

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