Environmental conditions associated with swordfish size compositions and catches off the Chilean coast

Multivariate analyses were applied to explore the relative influence of environmental factors on swordfish (Xiphias gladius) size compositions and catches off Chile. A first analysis was applied to a commercial fishing data base made up of biological-fishery and environmental records from 343 fishin...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yáñez,Eleuterio, Silva,Claudio, Barbieri,M. Angela, Órdenes,Alejandra, Vega,Rodrigo
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2009
Materias:	environmental conditions swordfish multivariate analysis Chile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000100006
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-560X2009000100006
record_format	dspace
spelling	oai:scielo:S0718-560X20090001000062009-04-22Environmental conditions associated with swordfish size compositions and catches off the Chilean coastYáñez,EleuterioSilva,ClaudioBarbieri,M. AngelaÓrdenes,AlejandraVega,Rodrigo environmental conditions swordfish multivariate analysis Chile Multivariate analyses were applied to explore the relative influence of environmental factors on swordfish (Xiphias gladius) size compositions and catches off Chile. A first analysis was applied to a commercial fishing data base made up of biological-fishery and environmental records from 343 fishing sets performed between 2000 and 2002 by two longline vessels. Furthermore, a data base of fishing research cruises over the Cordillera de Nazca was analyzed; this set consisted of biological-fishery and environmental satellite information recorded for 43 fishing sets done in summer and winter 2003 and autumn and spring 2005. Principal component and hierarchical classification analyses were applied to seven environmental variables (Latitude, Longitude, Sea surface temperature, Chlorophyll a concentration, Sea surface height, Sea sur-face salinity, Bathymetry), all of which may affect the distribution of swordfish size compositions and catches. The analyses indicate four spatial groups representing specific latitudinal locations and typologies of environmental conditions associated with the swordfish size compositions and catches in the study área. Swordfish were caught within a range of SST that varied from 16 to 22°C, with larger catches given smaller SSTs, greater chlorophyll concentrations, and higher latitudes. A latitudinal gradient in size composition is af-firmed, with juvenile specimens associated with warmer conditions, greater salinity, lower chlorophyll concentrations, and lower latitudes. The geographic distribution of the recruitment zone is associated with the Cordillera de Nazca marine area.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.37 n.1 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000100006en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	environmental conditions swordfish multivariate analysis Chile
spellingShingle	environmental conditions swordfish multivariate analysis Chile Yáñez,Eleuterio Silva,Claudio Barbieri,M. Angela Órdenes,Alejandra Vega,Rodrigo Environmental conditions associated with swordfish size compositions and catches off the Chilean coast
description	Multivariate analyses were applied to explore the relative influence of environmental factors on swordfish (Xiphias gladius) size compositions and catches off Chile. A first analysis was applied to a commercial fishing data base made up of biological-fishery and environmental records from 343 fishing sets performed between 2000 and 2002 by two longline vessels. Furthermore, a data base of fishing research cruises over the Cordillera de Nazca was analyzed; this set consisted of biological-fishery and environmental satellite information recorded for 43 fishing sets done in summer and winter 2003 and autumn and spring 2005. Principal component and hierarchical classification analyses were applied to seven environmental variables (Latitude, Longitude, Sea surface temperature, Chlorophyll a concentration, Sea surface height, Sea sur-face salinity, Bathymetry), all of which may affect the distribution of swordfish size compositions and catches. The analyses indicate four spatial groups representing specific latitudinal locations and typologies of environmental conditions associated with the swordfish size compositions and catches in the study área. Swordfish were caught within a range of SST that varied from 16 to 22°C, with larger catches given smaller SSTs, greater chlorophyll concentrations, and higher latitudes. A latitudinal gradient in size composition is af-firmed, with juvenile specimens associated with warmer conditions, greater salinity, lower chlorophyll concentrations, and lower latitudes. The geographic distribution of the recruitment zone is associated with the Cordillera de Nazca marine area.
author	Yáñez,Eleuterio Silva,Claudio Barbieri,M. Angela Órdenes,Alejandra Vega,Rodrigo
author_facet	Yáñez,Eleuterio Silva,Claudio Barbieri,M. Angela Órdenes,Alejandra Vega,Rodrigo
author_sort	Yáñez,Eleuterio
title	Environmental conditions associated with swordfish size compositions and catches off the Chilean coast
title_short	Environmental conditions associated with swordfish size compositions and catches off the Chilean coast
title_full	Environmental conditions associated with swordfish size compositions and catches off the Chilean coast
title_fullStr	Environmental conditions associated with swordfish size compositions and catches off the Chilean coast
title_full_unstemmed	Environmental conditions associated with swordfish size compositions and catches off the Chilean coast
title_sort	environmental conditions associated with swordfish size compositions and catches off the chilean coast
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2009000100006
work_keys_str_mv	AT yanezeleuterio environmentalconditionsassociatedwithswordfishsizecompositionsandcatchesoffthechileancoast AT silvaclaudio environmentalconditionsassociatedwithswordfishsizecompositionsandcatchesoffthechileancoast AT barbierimangela environmentalconditionsassociatedwithswordfishsizecompositionsandcatchesoffthechileancoast AT ordenesalejandra environmentalconditionsassociatedwithswordfishsizecompositionsandcatchesoffthechileancoast AT vegarodrigo environmentalconditionsassociatedwithswordfishsizecompositionsandcatchesoffthechileancoast
_version_	1714205061108727808

Environmental conditions associated with swordfish size compositions and catches off the Chilean coast

Ejemplares similares