Long-term changes in ray populations in the North Sea

Three data sets have been analysed: landing statistics (1903–1993), International Bottom Trawl Surveys (1979–1993), and survey data collected in Dutch coastal waters between 1951 and 1994. Landings of rays and skates have decreased by more than half compared with the post-war level. Starry ray has i...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	ICES journal of marine science 1996-12, Vol.53 (6), p.1085-1093
Hauptverfasser:	Walker, P. A., Heessen, H. J. L.
Format:	Artikel
Sprache:	eng
Schlagworte:	abundance distribution Marine Netherlands Institute for Fisheries Research Raja batis Raja brachyura Raja circularis Raja clavata Raja fullonica Raja microocellata Raja montagui Raja naevus Raja oxyrinchus Raja radiata Raja spp Raja undulata Rijksinstituut voor Visserijonderzoek
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Three data sets have been analysed: landing statistics (1903–1993), International Bottom Trawl Surveys (1979–1993), and survey data collected in Dutch coastal waters between 1951 and 1994. Landings of rays and skates have decreased by more than half compared with the post-war level. Starry ray has increased in abundance in the central North Sea between 1970 and 1993. Thornback ray virtually disappeared from the Dutch coastal area in 1958. No significant trend has been observed for the other species.
ISSN:	1054-3139 1095-9289
DOI:	10.1006/jmsc.1996.0135