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  • 1
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    Benthos and demersal fish habitats in the German Exclusive Economic Zone (EEZ) of the North Sea (2012)
    BioMed Central
    Details
    Publication Date: 2012-10-31
    Print ISSN: 1438-387X
    Electronic ISSN: 1438-3888
    Topics: Biology
    Published by BioMed Central
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  • 2
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    Nationales Fischereidatenerhebungsprogramm: Aktivitäten und Ausblick (2021)
    In:  christoph.stransky@vti.bund.de | http://aquaticcommons.org/id/eprint/2912 | 1240 | 2011-09-29 18:11:28 | 2912 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
    Details
    Publication Date: 2021-06-29
    Description: Within the frame of the EU Data Collection Regulation (DCR), Germany is obliged since 2002 to collect basic fisheries data to support the Common Fisheries Policy. Various governmental institutions are involved in the collection of landings and effort data, biological and economic data of the German fisheries. About 200 trips on commercial fishery vessels were sampled from 2002 to 2006. Additional stock data are collected on research surveys. The landings of cod in the recreational fisheries in the North and Baltic Seas were recorded within a pilot study. In order to assess the economic situation of the fishing fleet and processing industry, economic data were collected. The collected data are being stored in a national database and being made available for scientific working groups. At present, the legal regulations within the DCR framework are being reviewed and adapted to the changing requirements of fisheries management.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information Fishery research in 2010. Johann Heinrich von Thünen-Institut, Institut für Seefischerei, Johann Heinrich von Thünen-Institut, Institut für Ostseefischerei, Bundesanstalt für Landwirtschaft und Ernährung , Referat 422, Bundesanstalt für Landwirtschaft und Ernährung, Referat 522
    Keywords: Management ; Fisheries ; Fishery management ; EU-Verordnung ; 1543/2000 ; 1639/2001 ; 1581/2004
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 5-14
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  • 3
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    Rückwürfe in den Fischereien unter deutscher Flagge: Ergebnisse aus 6 Jahren Datenerhebungsprogramm am Institut für Seefischerei (2021)
    In:  jens.ulleweit@vti.bund.de | http://aquaticcommons.org/id/eprint/2947 | 1240 | 2011-09-29 18:09:40 | 2947 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
    Details
    Publication Date: 2021-06-30
    Description: Since 2002 Germany is obliged to collect fishery data to support the European Common Fishery Policy. Sampling of the com-mercial fishery under German flag is one duty within the EU fisheries data collection programme. During the past 6 years, 148 fishing trips were sampled by scientific observers onboard commercial fishing vessels to collect data on catch composi-tions with special emphasis on the proportions of landed and discarded fish. The results show that the proportion of discard is depending on the fishery. Highest discard rates were observed on beam trawl fishing trips. At the level of individual fishing trips, discard rates varied extremely within a fishery segment. Highest variations were found in the beam and bottom otter trawl fishery. In contrast, the discard rates in high-seas fisheries were low.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information on Fishery research in 2010.
    Keywords: Management ; Fisheries ; stock management ; EU ; Discards ; Fischereiflotte ; Fishery vessels
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 45-54
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  • 4
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    Auswirkungen von größeren Steertmaschen bei Grundschleppnetzen auf Plattfischfänge in der Nordsee (2021)
    In:  harald.wienbeck@vti.bund.de | http://aquaticcommons.org/id/eprint/2942 | 1240 | 2011-09-29 18:13:53 | 2942 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
    Details
    Publication Date: 2021-06-30
    Description: The present fishing effort regulation for bottom trawls in the North Sea (EU 40/2008) reduces the fishing effort with larger co-dend mesh sizes (〉 100 mm mesh opening) to 86 fishing days per year. The aim of this technical measure is the protection of the weak cod stock usually harvested with this mesh opening. By combining the results of our selectivity investigations on plaice during a commercial fishing trip and the samples taken within the frame of the EU data collection regulation (DCR) we could draw conclusions on commercial and non-commercial fish species. When using codend meshes with larger mesh opening the discard was reduced remarkably. In the reference codend with 80 mm mesh opening the undersized bycatch was 47 % of the total catch of plaice, in the experimental codends with 120 mm mesh opening it was only 7 % and with 130 mm mesh opening just 3 %. On the other hand however, the applied mesh openings in the experimental codends let escape marketable plaice to some extent. The loss of catch was assessed on the basis of fish numbers per length class using a length-weight conversion rate from the DCR. The loss by weight of marketable fish with 120 mm codend mesh opening was 18 %, and 28 % with 130 mm codend mesh opening. To assure the protection of young round and flatfish with one general mesh size, a new regulation should prescribe a minimum mesh opening of 120 mm, accompanied by an expansion of the fishing effort.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information in Fishery Research in 2010.
    Keywords: Conservation ; Management ; Fisheries ; Fangtechnik ; Maschenselektion ; Discards
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 15-20
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  • 5
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    Aktivitäten des nationalen Fischereidatenerhebungsprogramms im Jahr 2004 (2021)
    In:  christoph.stransky@vti.bund.de | http://aquaticcommons.org/id/eprint/3085 | 1240 | 2012-04-25 16:26:18 | 3085 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: Based on the EU Regulation 1543/2000 for the improvementof quantity and quality of fishery data the FederalMinistry for Consumer Protection, Food and Agriculture hasinitiated a national data collection programme, executedby three institutions, Federal Research Centre for Fisheries(BFAFi), Federal Agency for Ariculture and Food and theFederal Research Centre Agriculture, co-ordinated by BFAFi.In 2004 samples have been taken from 943 hauls during29 commercial fishing trips; 357 000 fish have been measured. From 2002 to 2004 the number of length and weightand measurements, and age determinations could increasedby 32, 65 and 156 % resp. Pilot inquiries have beencarried out to prepare also the collection of economicaldate of fishing vessels and of fish processing plants from2006.
    Description: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery Research in 2010.
    Keywords: Fisheries ; fishery management ; status report
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 110
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