FN Archimer Export Format PT J TI Spatio-temporal patterns in demersal elasmobranchs from trawl surveys in the eastern English Channel (1988-2008) BT AF MARTIN, Corinne VAZ, Sandrine ELLIS, J. R. COPPIN, Franck LE ROY, Didier CARPENTIER, Andre AS 1:1;2:1;3:2;4:1;5:1;6:1; FF 1:PDG-DOP-DCMMN-HMMN-RHBL;2:PDG-DOP-DCMMN-HMMN-RHBL;3:;4:PDG-DOP-DCMMN-HMMN-RHBL;5:PDG-DOP-DCMMN-HMMN-RHBL;6:PDG-DOP-DCMMN-HMMN; C1 IFREMER, Lab Ressources Halieut, F-62321 Boulogne Sur Mer, France. Ctr Environm Fisheries & Aquaculture Sci, Lowestoft Lab, Lowestoft NR33 0HT, Suffolk, England. C2 IFREMER, FRANCE CEFAS, UK SI BOULOGNE SE PDG-DOP-DCMMN-HMMN-RHBL PDG-DOP-DCMMN-HMMN IN WOS Ifremer jusqu'en 2018 copubli-europe IF 2.483 TC 11 UR https://archimer.ifremer.fr/doc/00019/13029/10160.pdf LA English DT Article CR CGFS 89 CGFS 90 CGFS 91 CGFS 92 CGFS 93 CGFS 94 CGFS 95 CGFS 96 CGFS 97 CGFS 98 CGFS 99 CGFS2000 CGFS2001 CGFS2002 CGFS2003 CGFS2004 CGFS2005 CGFS2006 CGFS2007 CGFS2008 CGFS2009 CGFS2010 BO Gwen Drez DE ;Elasmobranchii;Chondrichthyes;Kriging;GIS;Conservation;Sex ratio;Catchability;Channel Ground Fish Survey;CGFS AB Elasmobranchs have life-history characteristics that make them more vulnerable to fishing than many teleost fish. As commercial landings data are usually not sufficient for the monitoring and assessment of elasmobranchs, fisheries-independent data, geostatistics and Geographic Information Systems were used to investigate the spatio-temporal patterns of sharks (6 species), skates (9 species) and stingray in the eastern English Channel. Temporal trends in relative abundance and distributions of total-length frequencies were investigated using data collected over 21 yr from an annual survey using a Grande Ouverture Verticale (GOV) trawl. Temporal trends in relative abundance were examined qualitatively in relation to the reported conservation status for the various species. Most individuals captured for 7 of the species were immature. The GOV trawl was more efficient at sampling demersal sharks than batoids (skates and rays), especially small-sized batoids. Geostatistics were effectively used to explore, identify and quantify the spatial structure of the distributions of 13 species. The more abundant species displayed significantly larger patch diameters. Three shark species (Scyliorhinus canicula, S. stellaris and Galeorhinus galeus) were found to be spatially segregated by sex. The shark species tended to occur in the deeper waters of the area, while skates were found to be more coastal in their distribution. Results have contributed to a greater understanding of the spatio-temporal patterns in elasmobranch species in the eastern English Channel and are of relevance to future marine spatial planning and the development of long-term management plans for elasmobranchs in the area and elsewhere. PY 2010 PD NOV SO Marine Ecology-progress Series SN 0171-8630 PU Inter-research VL 417 UT 000284006800018 BP 211 EP 228 DI 10.3354/meps08802 ID 13029 ER EF