Species and habitats - Mullus surmuletus - Immature - Multi-annual abundance in July 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
ID CHARM_MULLSUR_S0_BTS_R
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.
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
Temporal Extent 1989-01-01 - 2006-12-31