Species and habitats - Dicentrarchus labrax - All ages - Presence probability Kriging error maps during BTS (1989 - 2006)

Date(s) (Publication)
Custodian(s): CHARM Consortium
Point of contact(s): Steve Mackinson
Affiliation(s) 1 : Center for Environment, Fisheries & Aquaculture Science
2 : CHARM Consortium
Credit CEFAS
Abstract Biologic data have been expressed in abundance (numbers or density values (nbr/kmĀ²)) and always required to be log-transformed using a log10(x+1) transformation. Abundance mean (mean) and standard deviation (st) have been calculated. The sum of the kriging error for each yearly kriged abundance fits to the kriging error (v).
Keywords Species data set, CHARM, Habitats et biotopes, ressource halieutique
Lineage The standard survey has a total of approximately 100 tows or stations (75 are in ICES division VIId,25 are in ICES division Ivc). A commercial 4m beam trawl fitted with a chain mat, flip-up ropes, and a 40 mm cod-end liner is used.The gear is towed at 4 knots (ground speed) for 30 minutes on a warp length appropriate to the depth of water. At each sampling station (only daylight), all the fish species are sorted, weighed, counted and measured.
Utilisation research-only

Formal permission induced by existence of a license.

Has to be cited this way in maps : "Source CHARM Consortium"

Has to be cited this way in bibliography : "Carpentier A, Martin CS, Vaz S (Eds.), 2009. Channel Habitat Atlas for marine Resource Management, final report / Atlas des habitats des ressources marines de la Manche orientale, rapport final (CHARM phase II). INTERREG 3a Programme, IFREMER, Boulogne-sur-mer, France. 626 pp. & CD-rom"
Temporal Extent 1989-01-01 - 2006-12-31