Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Spatial distribution of fishing effort in relation to seafloor habitats in the Kattegat, a GIS analysis
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SIK – Institutet för livsmedel och bioteknik.ORCID iD: 0000-0003-1995-2338
2007 (English)In: Aquatic conservation, ISSN 1052-7613, E-ISSN 1099-0755, Vol. 17, no 4, p. 421-440Article in journal (Refereed) Published
Abstract [en]

1. High-resolution fishing effort data from the Kattegat, an important fishing ground for Swedish and Danish fishermen, was analysed in a Geographical Information System (GIS). Data were based on position data for individual tows reported by Swedish fishermen during 2001-2003. 2. Gear dimension and towing speed data were used to calculate an index for area swept per hour for each main gear type in use in the area. These indexes were multiplied by fishing effort and a grid theme of fishing intensity was created after GIS analysis. 3. Around 44% of the entire area was affected by Swedish fisheries during the study period, hence 56% was not affected. 4. Effort was highly concentrated in certain areas and 10% of the total area was covered more than twice per year. 5. Overlaying the effort data set with habitat maps classified according to the European Nature Information System (EUNIS) showed that the fishing pressure differed between habitats. For deep rocky and muddy habitats, almost the entire area was affected by fisheries during the study period, while both intensity and proportion affected were lower in sandy sediments and gravels. 6. Around 55% of the deep rocky habitats were trawled more than twice per year. Of the muddy seafloor areas, 41% were covered more than twice per year and 4% more than once a month by trawls. 7. The biological effects of the fishing intensities found were analysed using a database (MarLIN) containing assessments of marine habitat recoverability. All habitats except muds are probably in a nearly or fully recovered condition (as defined by MarLIN). A considerable part of the muddy habitats are in a permanently altered condition owing to fishing disturbance taking place more frequently than the indicated recovery time. 8. Danish fishermen report more fishing effort in the area than do Swedes. Owing to differences in reporting fishing positions, Danish fisheries could not be included in the present study. Scaling up the results to include Danish fisheries is discussed. 9. The results of the present study could be used to target habitat management goals more precisely, while minimizing the negative impact of restrictions on the fishing sector. 10. A prerequisite for performing similar studies is the availability of high-resolution fishing effort data and high-resolution benthic habitat maps. Copyright © 2006 John Wiley & Sons, Ltd.

Place, publisher, year, edition, pages
2007. Vol. 17, no 4, p. 421-440
Keywords [en]
Food Engineering
Keywords [sv]
Livsmedelsteknik
National Category
Food Science
Identifiers
URN: urn:nbn:se:ri:diva-8375DOI: 10.1002/aqc.792OAI: oai:DiVA.org:ri-8375DiVA, id: diva2:966246
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-07-05Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full texthttp://www.scopus.com/inward/record.url?eid=2-s2.0-34547226505&partnerID=40&md5=d151638d49aa1d271e582fc8ed0a943a

Authority records BETA

Ziegler, Friederike

Search in DiVA

By author/editor
Ziegler, Friederike
By organisation
SIK – Institutet för livsmedel och bioteknik
In the same journal
Aquatic conservation
Food Science

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 14 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
v. 2.35.8