Expeditionsrapport BITS, november 2013

Rudolphi, Ann-Christin and Casini, Michele (2014). Expeditionsrapport BITS, november 2013. Lysekil: (NL, NJ) > Department of Aquatic Resources, Sveriges lantbruksuniversitet. Aqua reports ; 2014:6
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Abstract

Expeditionen utförde bottentrålning med TV3L-trålen i enlighet med Baltic International Trawl Surveys (BITS) manual (Anon., 2013a). Sverige hade tilldelats 30 slumpmässigt utvalda stationer varav 25 av dessa fiskades av U/F Dana. Fem stationer kunde inte fiskas p. g. a.
Svenska Försvarsmaktens tillträdesförbud.

Totalt gjorde Dana 25 tråldrag med TV3L-trålen (inklusive 6 fiktiva drag som inte trålades p. g.a. att syrekoncentrationen nära botten var <1,5 ml/l) och täckte delar av SD 25, 27 och 28 under
denna expedition. Akustikdata registrerades dessutom under hela expeditionen.

Under denna expedition fångades 18 fiskarter. Totalfångsten i vikt dominerades av sill, torsk, skrubba och skarpsill.

Hydrografiparametrar, bl. a. salthalt, temperatur och syrekoncentration, observerades och mättes
på de flesta trålstationerna. I denna rapport visas enbart syrekoncentrationen vid botten.

Authors/Creators:

Rudolphi, Ann-Christin and Casini, Michele

Title:

Expeditionsrapport BITS, november 2013

Alternative abstract:

Language

Abstract

English

The survey was conducted using the TV3L demersal trawl according to the Baltic International
Trawl Survey (BITS) manual (Anon., 2013a). Sweden was assigned 30 randomly selected hauls
of which Dana realized 25 stations. Five stations were not visited because of prohibition from the
Swedish Armed Forces.
Overall, Dana made 25 hauls with TV3L demersal trawl (including 6 fictitious hauls which were
not trawled because the oxygen concentration close to the bottom was <1.5 ml/l) and covered
parts of SD 25, 27 and 28 this year. During the survey, acoustic data were continuously recorded.
During this survey 18 fish species were caught. The total catch, in terms of weight, was
dominated by herring, cod, flounder and sprat.
The hydrographical conditions were observed and measured at most of the stations. Only the
oxygen concentration at the bottom is presented here.

Series/Journal:

Aqua reports (12351367)

Year of publishing :

June 2014

Number:

2014:6

Number of Pages:

Place of Publication:

Lysekil

Publisher:

Institutionen för Akvatiska resurser, Sveriges lantbruksuniversitet

Associated Programs and Other Stakeholders:

SLU - Environmental assessment > Programme Coastal and sea areas
SLU - Environmental assessment > Data from Environmental Assesment (FoMA) is used

ISBN for electronic version:

978-91-576-9231-3

Language:

Swedish

Publication Type:

Report

Full Text Status:

Public

Agris subject categories.:

M Aquatic sciences and fisheries > M01 Fisheries and aquaculture - General aspects
M Aquatic sciences and fisheries > M40 Aquatic ecology

Subjects:

(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Fish and Aquacultural Science

Agrovoc terms:

data collection, baltic sea, fish

Keywords:

datainsamling, Östersjön, fisk

URN:NBN:

urn:nbn:se:slu:epsilon-e-1959

Permanent URL:

http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1959

ID Code:

11281

Faculty:

NJ - Fakulteten för naturresurser och jordbruksvetenskap

Department:

(NL, NJ) > Department of Aquatic Resources

External funders:

Swedish Agency for Marine and Water Management

Deposited By:

yvonne ericsson

Deposited On:

18 Jun 2014 11:02

Metadata Last Modified:

17 Apr 2015 12:13

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