Page 44 - Annual Report 2011

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44
RPCM
to collect biological information on ecologically important fish species and
provide descriptions of the physical and biological oceanographic conditions
of the southeastern Bering Sea during August and September 2011. Stations
west of approximately 169°W longitude are to be sampled by the
F/V Bristol
Explorer
. Fish samples will be collected using a midwater rope trawl. At
each station, the net are to be towed at or near the surface. All fish species
will be counted and standard biological measurements including length
and weight will be taken from subsamples of each species. Subsamples
of marine fish will be examined onboard for diet analyses. Biological and
physical oceanographic data will be collected at each trawl station as well as
opportunistically during the survey.
Another phase of the BASIS cruise plan takes place in the northeastern
Bering Sea (
. Scientists on board the
F/V Bristol Explorer
are
to survey the northern Bering Sea shelf for a total of 35 charter days.
The objective is to collect information on pelagic fish and oceanographic
information in the coastal region to support scientific investigations of Yukon
River juvenile Chinook salmon and broader scientific objectives on pelagic
species distribution and ecosystem structure. Adaptive pelagic rope trawl
sampling (mid-water or surface) will be conducted to validate species
composition of acoustic targets. Biological data collected from trawls will
include species catch composition by weight and number. Catches will
be subsampled for length frequency distributions, food habits, and fish
condition. Genetic tissues will be collected from all Chinook salmon and
from a subsample of chum salmon.
5. Exchange of Personnel, Biological Samples, and Data
Related to 2011 Cruises
Current biological sample and data requests from among the Parties are
summarized in
6. Reports fromWorking Groups Concerned with
Research Planning and Coordination
(a) Report of the Working Group on Salmon Marking
The Working Group on Salmon Marking (WGSM) has been corresponding
via email in an effort to coordinate marking efforts for brood year 2011 and
to update the Otolith Mark Database.