DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA

Bathymetric and spatio-temporal distributions of both abundance and biomass as well as secondary production of benthic invertebrates in the Beagle Channel were determined. The sampling stations were seasonally placed in three different areas in the Beagle Channel at two depth ranges, 15-40 m and 70-...

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Autores principales:	Diez,Mariano J, Romero,M. Carolina, Obenat,Sandra, Albano,Mariano J, Tapella,Federico
Lenguaje:	English
Publicado:	Universidad de Magallanes 2009
Materias:	Zoobenthos Subantarctic waters abundance biomass, P/B ratio
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2009000200003
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id	oai:scielo:S0718-686X2009000200003
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spelling	oai:scielo:S0718-686X20090002000032018-09-05DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINADiez,Mariano JRomero,M. CarolinaObenat,SandraAlbano,Mariano JTapella,Federico Zoobenthos Subantarctic waters abundance biomass, P/B ratio Bathymetric and spatio-temporal distributions of both abundance and biomass as well as secondary production of benthic invertebrates in the Beagle Channel were determined. The sampling stations were seasonally placed in three different areas in the Beagle Channel at two depth ranges, 15-40 m and 70-259 m. A total of 32,686 specimens distributed in 30 taxonomic groups were identified. In addition, 4 taxa were quantified only in terms of biomass. The invertebrate abundance and biomass were different with depth. Secondary production at this range was 0.59 ± 0.51 kJ·m-2 year¹ whereas it decreased to 0.09 ±0.08 kJ·m-2 year¹ at 70-259 m. In contrast to secondary production, P/B ratio showed a positive increment with depth. Furthermore, seasonal variations were not observed in secondary production of the macrozoobenthos. Parameters directly associated with depth could be involved in structuring the macrobenthic assemblages in the Beagle Channel.info:eu-repo/semantics/openAccessUniversidad de MagallanesAnales del Instituto de la Patagonia v.37 n.2 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2009000200003en10.4067/S0718-686X2009000200003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Zoobenthos Subantarctic waters abundance biomass, P/B ratio
spellingShingle	Zoobenthos Subantarctic waters abundance biomass, P/B ratio Diez,Mariano J Romero,M. Carolina Obenat,Sandra Albano,Mariano J Tapella,Federico DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
description	Bathymetric and spatio-temporal distributions of both abundance and biomass as well as secondary production of benthic invertebrates in the Beagle Channel were determined. The sampling stations were seasonally placed in three different areas in the Beagle Channel at two depth ranges, 15-40 m and 70-259 m. A total of 32,686 specimens distributed in 30 taxonomic groups were identified. In addition, 4 taxa were quantified only in terms of biomass. The invertebrate abundance and biomass were different with depth. Secondary production at this range was 0.59 ± 0.51 kJ·m-2 year¹ whereas it decreased to 0.09 ±0.08 kJ·m-2 year¹ at 70-259 m. In contrast to secondary production, P/B ratio showed a positive increment with depth. Furthermore, seasonal variations were not observed in secondary production of the macrozoobenthos. Parameters directly associated with depth could be involved in structuring the macrobenthic assemblages in the Beagle Channel.
author	Diez,Mariano J Romero,M. Carolina Obenat,Sandra Albano,Mariano J Tapella,Federico
author_facet	Diez,Mariano J Romero,M. Carolina Obenat,Sandra Albano,Mariano J Tapella,Federico
author_sort	Diez,Mariano J
title	DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
title_short	DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
title_full	DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
title_fullStr	DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
title_full_unstemmed	DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA
title_sort	distribution of benthic invertebrates in the beagle channel, argentina
publisher	Universidad de Magallanes
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-686X2009000200003
work_keys_str_mv	AT diezmarianoj distributionofbenthicinvertebratesinthebeaglechannelargentina AT romeromcarolina distributionofbenthicinvertebratesinthebeaglechannelargentina AT obenatsandra distributionofbenthicinvertebratesinthebeaglechannelargentina AT albanomarianoj distributionofbenthicinvertebratesinthebeaglechannelargentina AT tapellafederico distributionofbenthicinvertebratesinthebeaglechannelargentina
_version_	1714205672207286272

DISTRIBUTION OF BENTHIC INVERTEBRATES IN THE BEAGLE CHANNEL, ARGENTINA

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