CEFAS2567e3d1-6843-464e-86ff-d1141e52e371
English
dataset
Centre for Environment, Fisheries & Aquaculture Science
Data Manager
+44 (0)1502 562244
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
Suffolk
NR33 0HT
UK
data.manager@cefas.co.uk
pointOfContact
2017-01-24T15:49:14
MEDIN Discovery Metadata Standard
Version 2.3.7
urn:ogc:def:crs:EPSG::4326
OGP
2010 - 2010 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Observations of Cod at Greenland 2010/11 - Fisheries Science Partnership
FSP Observations of Cod at Greenland
2017-01-24
publication
CEFAS2567e3d1-6843-464e-86ff-d1141e52e371
http://www.cefas.co.uk/
During the May, June and July 2010, the fishing vessel *Marbella * carried
out commercial fishing for Greenland cod ( *Gadus morhua* ) off the east
coast of Greenland. Some hauls were targeted at Greenland halibut *(*
*Reinhardtius hippoglossoides* ). The purpose of this report is to fulfil the
Greenlandic Authorities’ requirement to present observer-collected information
on cod (for details see below), so the results for Greenland halibut (and
other species taken) are not presented.
In all, 116 tows targeting cod were carried out in two areas off the east
coast of Greenland, of which 46 where sampled for length and 40 of the 46 for
otoliths and other biological information. Discarded cod amounted to just
0.08% of the total catch of the species (some of these fish were damaged on
hauling and processing).
Centre for Environment, Fisheries & Aquaculture Science
Data Manager
+44 (0)1502 562244
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
Suffolk
NR33 0HT
UK
data.manager@cefas.co.uk
originator
Centre for Environment, Fisheries & Aquaculture Science
Data Manager
+44 (0)1502 562244
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
Suffolk
NR33 0HT
UK
data.manager@cefas.co.uk
custodian
notPlanned
NDGO0005
Biota abundance, biomass and diversity
SeaDataNet P021 parameter discovery vocabulary
2011-03-25
revision
Species distribution
GEMET - INSPIRE themes, version 1.0
2008-06-01
publication
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
otherRestrictions
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
English
biota
SeaVoX Vertical Co-ordinate Coverages
2010-05-18
revision
Water column
-50
-40
60
70
2010-05-27T00:00:00.000Z
2010-07-09T00:00:00.000Z
http://data.cefas.co.uk/#/View/2946/order
dataset
FV Marbella (H771) is a stern freezer-trawler built in 1989. Her registered
length is 62 m and she is powered by a 2700 kW main engine. Marbella fished
with an otter trawl. Two nets were used: (i) the Stelstad net, with a 32m
footrope and 28-inch hoppers plus a twin trouser codend constructed of 6-mm
double-braided twine, and (ii) the Bacalao net, with a 42 m footrope and
29-inch hoppers plus a trouser codend constructed of 8-mm single-braided
twine. Tow duration was on average 45 and 60 min for the northerly and
southerly grounds, respectively, but was more variable for the southern area.
Towing speeds were kept at around 2.8–3.6 knots, whenever possible.
Fishing activity and biological sampling
All shooting and hauling positions and trawl durations were captured on a
database and checked for quality of data input. Standard methods were used by
Cefas staff for sorting and recording catches on commercial fishing vessels.
Catches of cod were quantified and classified as discarded or retained
according to advice from the fishing crew. When catches were sampled rather
than fully sorted, an appropriate raising factor was determined to allow the
total catch to be estimated. For each component (retained and discarded),
length measurements of cod were obtained and the sex and maturity of fish
sampled for otoliths were recorded. These data were captured on the database
and checked for quality of data input.
<span style="font-family: Calibri;">...</span>