Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil

The effect of the Orion shipwreck on fish assemblage distribution near the reef was studied to the northeast of Rio de Janeiro with six different fishing gears: gillnets, mid-water longlines, circular traps, rectangular traps, vertical longlines, and bottom trawling. The study consisted of a pre-mon...

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Autores principales:	Barros Fagundes-Netto,Eduardo, Ricardo Gaelzer,Luiz, Coutinho,Ricardo, Zalmon,Ilana R
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2011
Materias:	shipwreck artificial reef monitoring management fish assemblage southern Brazil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000100010
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spelling	oai:scielo:S0718-560X20110001000102011-04-14Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, BrazilBarros Fagundes-Netto,EduardoRicardo Gaelzer,LuizCoutinho,RicardoZalmon,Ilana R shipwreck artificial reef monitoring management fish assemblage southern Brazil The effect of the Orion shipwreck on fish assemblage distribution near the reef was studied to the northeast of Rio de Janeiro with six different fishing gears: gillnets, mid-water longlines, circular traps, rectangular traps, vertical longlines, and bottom trawling. The study consisted of a pre-monitoring survey four months before the shipwreck in the area (A) and in two control areas (B and C). After 36 months, a total of 56 species were caught in the Orion reef area, 49 in control area B and 59 in control area C. The similarity analysis, considering the number of fish caught during the nine surveys in the three study areas, clustered the pre-monitoring and first post-settlement surveys of the three sites. This occurred due to the low number of fish captured and the dominance of Trichiurus lepturus and Lagocephalus laevigatus. These results differed from all the other studies in the three areas due to the co-dominance of Ctenosciaena gracilicirrhus and Stephanolepis hispidus. Such spatial similarity shows the low influence of the Orion reef in the area after three years. Biomass values were 15% higher in the Orion reef area than in the control areas, representing an increase of up to 1.2 times in wet weight. The increment of fish communities is still insufficient for proposing sustainable fishery activity in the shipwreck area. The monitoring time (32 months) after the sinking of the Orion may be considered too short to assure that the wreckage had reached its maturity as an artificial reef, either as a fish attractor or producer.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.39 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000100010en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	shipwreck artificial reef monitoring management fish assemblage southern Brazil
spellingShingle	shipwreck artificial reef monitoring management fish assemblage southern Brazil Barros Fagundes-Netto,Eduardo Ricardo Gaelzer,Luiz Coutinho,Ricardo Zalmon,Ilana R Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil
description	The effect of the Orion shipwreck on fish assemblage distribution near the reef was studied to the northeast of Rio de Janeiro with six different fishing gears: gillnets, mid-water longlines, circular traps, rectangular traps, vertical longlines, and bottom trawling. The study consisted of a pre-monitoring survey four months before the shipwreck in the area (A) and in two control areas (B and C). After 36 months, a total of 56 species were caught in the Orion reef area, 49 in control area B and 59 in control area C. The similarity analysis, considering the number of fish caught during the nine surveys in the three study areas, clustered the pre-monitoring and first post-settlement surveys of the three sites. This occurred due to the low number of fish captured and the dominance of Trichiurus lepturus and Lagocephalus laevigatus. These results differed from all the other studies in the three areas due to the co-dominance of Ctenosciaena gracilicirrhus and Stephanolepis hispidus. Such spatial similarity shows the low influence of the Orion reef in the area after three years. Biomass values were 15% higher in the Orion reef area than in the control areas, representing an increase of up to 1.2 times in wet weight. The increment of fish communities is still insufficient for proposing sustainable fishery activity in the shipwreck area. The monitoring time (32 months) after the sinking of the Orion may be considered too short to assure that the wreckage had reached its maturity as an artificial reef, either as a fish attractor or producer.
author	Barros Fagundes-Netto,Eduardo Ricardo Gaelzer,Luiz Coutinho,Ricardo Zalmon,Ilana R
author_facet	Barros Fagundes-Netto,Eduardo Ricardo Gaelzer,Luiz Coutinho,Ricardo Zalmon,Ilana R
author_sort	Barros Fagundes-Netto,Eduardo
title	Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil
title_short	Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil
title_full	Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil
title_fullStr	Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil
title_full_unstemmed	Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil
title_sort	influence of a shipwreck on a nearshore-reef fish assemblages off the coast of rio de janeiro, brazil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000100010
work_keys_str_mv	AT barrosfagundesnettoeduardo influenceofashipwreckonanearshorereeffishassemblagesoffthecoastofriodejaneirobrazil AT ricardogaelzerluiz influenceofashipwreckonanearshorereeffishassemblagesoffthecoastofriodejaneirobrazil AT coutinhoricardo influenceofashipwreckonanearshorereeffishassemblagesoffthecoastofriodejaneirobrazil AT zalmonilanar influenceofashipwreckonanearshorereeffishassemblagesoffthecoastofriodejaneirobrazil
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Influence of a shipwreck on a nearshore-reef fish assemblages off the coast of Rio de Janeiro, Brazil

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