English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/27024
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002

AutorHendrickson, Lisa; Vázquez, Antonio
Palabras claveAmerican plaice
Atlantic cod
Collocation
Flemish Cap
Gadus morhua
Greenland halibut
Hippoglossoides platessoides
Kriging
Range contraction
Range expansion
Reinhardtius hippoglossoides
Spatial distribution
Fecha de publicacióndic-2005
EditorNorthwest Atlantic Fisheries Organization
CitaciónJournal of Northwest Atlantic Fishery Science 37: 53-72 (2005)
ResumenThe Flemish Cap is an isolated bank located east of the Grand Banks in the Northwest Atlantic Ocean. Research bottom trawl surveys of the Flemish Cap have been conducted in July by the European Union since 1988. Data from these surveys were used to assess changes in the spatial distributions of Atlantic cod (Gadus morhua), American plaice (Hippoglossoides platessoides), and Greenland halibut (Reinhardtius hippoglossoides) during 1988–2002. Kriging and indices of collocation and co-occurrence indicated that cod and plaice distributions have a high degree of overlap and that density-dependent range contraction of both stocks occurred during a time when Greenland halibut, a more common inhabitant of deep water, exhibited range expansion into shallow water on the Cap. However, the timing and locations of these distributional changes were such that little overlap occurred between the distributions of Greenland halibut and either cod or plaice. The range expansion of Greenland halibut was also density-dependent and primarily attributable to young fish (ages 1 and 2 from the 1994 and 1995 year-classes) which prefer shallow water. The range contractions of cod and plaice have persisted since the mid-1990s, and despite fishing moratoria implemented for plaice in 1994 and for cod in 1999, neither stock has shown signs of recovery. Biological and stock assessment implications of these distribution changes are discussed in relation to the lack of recovery.
Descripción20 páginas, 18 figuras, 2 tablas.
Versión del editorhttp://dx.doi.org/10.2960/J.v37.m566
URIhttp://hdl.handle.net/10261/27024
DOI10.2960/J.v37.m566
ISSN0250-6408
Aparece en las colecciones: (IIM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
5-hendrickson.pdf2,84 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.