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  • 1
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    Das europäisches Netzwerk zur Koordination der Altersbestimmung bei Fischen: European Fish Ageing Network (EFAN) (2021)
    In:  cornelius.hammer@vti.bund.de | http://aquaticcommons.org/id/eprint/4198 | 1240 | 2012-11-10 18:44:43 | 4198 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-30
    Description: Financial support is going to be applied for from the European Commission in order to establish the European Fish Ageing Network (EFAN). The project, which was planned andinitiated from Norway (Floedevigen) is supposed to be a concerted action from 14 European Countries involving about 35 institutions. The primary aim of the network is to coordinate the research in age reading, especially the improvement of data bases for reference material, the transformation of research (e.g. daily ring formation in otoliths) to each interested reader. Moreover, the applied financial support is supposed to be preliminary spent fortravel of researcher and technicians to other institutes where the same fish species are aged. Reference material is supposed to be sent to the institutes for check-reading. Specific workshops will be held in cases where heterogeneousresults occur from check-reading the reference material.
    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 ; congress report ; use of methods ; image analysis ; concerted action
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 98-100
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  • 2
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    Simulierte Auswirkungen des mehrjährigen Bewirtschaftungsplans für die Dorschfischerei in der westlichen Ostsee und die Möglichkeit einer technischen Alternative (2021)
    In:  hans-joachim.raetz@vti.bund.de | http://aquaticcommons.org/id/eprint/2946 | 1240 | 2011-09-29 18:09:37 | 2946 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
    Details
    Publication Date: 2021-06-30
    Description: The cod stock in the Western Baltic Sea is assessed to be overfished regarding the definitions of the UN World Summit on Sustainable Development at Johannesburg in 2002. Thus, the European Fisheries Council enforced a multi-annual management plan in 2007. Our medium term simulations over the future 10 years assume similar stock productivity as compared with the past four decades and indicate that the goals of the management plan can be achieved through TAC and consistent effort regulations. Taking account of the uncertainty in the recruitment patterns, the target average fishing mortality of age groups 3 – 6 years of F = 0.6 per year as defined in the management plan is indicated to exceed sustainable levels consistent with high long term yields and low risk of depletion. The stipulated constraint of the annual TAC variations of ±15% will dominate future fisheries management and implies a high recovery potential of the stock through continued reductions in fishing mortality. The scientific assessment of sustainable levels of exploitation and consideration in the plan is stronglyadvised, taking account of uncertainties attributed to environmental and biological effects. We recommend our study to be complemented with economic impact assessments including effects on by-catch species, which have been disregarded in this study. It is further demonstrated, that the goals of the management plan can alternatively be achieved by mesh size adaptations. An alternative technical option of mesh size increases to realize the required reductions in fishing mortality provides avoidance of discards of undersized fish after a few years by means of improved selectivity, another important element of the Common Fisheries Policy. However, it is emphasized that technical regulations since 1990 failed to affect the by-catch and discards of juvenile cod. In any way, the meaningful implementation of the multiannual management plan through stringent control and enforcement appears critical.
    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. European Commission, Joint Research Centre, Institute for Protection and Security of the Citizen, Maritime Affairs Unit G.04; Johann Heinrich von Thünen-Institut, Institut für Seefischerei; Johann Heinrich von Thünen-Institut, Institut für Ostseefischerei
    Keywords: Management ; Conservation ; Fisheries ; stock management ; Baltic Sea ; Cod ; Dorsch ; Bestandsmanagement
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 36-44
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  • 3
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    Die lage der Fischbestände in Nordostatlantik, Nord- und Ostsee. Einschätzungen des Internationalen Rates für Meeresforschung im Frühjahr 2000 (2021)
    In:  http://aquaticcommons.org/id/eprint/3257 | 1240 | 2012-05-08 16:46:11 | 3257 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-26
    Description: The spring session of ACFM gave advice for a numberof stocks in the North Atlantic, North Sea and Baltic.The present assessment of the situation is given here forstocks of higher importance for the German fishery.These are: Blue Whiting: the stock is still relatively high,this, however, will not last very long, due to too intensefishing. Cod in Kattegat: stock is outside safe biologicallimits. No immediate recovery in sight. Cod in 22–24(Baltic): stock is inside save biological limits. F, however, is above the recommendation of the IBSFC. GreenlandHalibut: state of the stock not quite clear. The presentfishing intensity seems to be sustainable. Herring (Atlanto-scandian, Norwegian spring spawner): stock is within safe biological limits, weak recruitment of the recent years will lead to a reduction of biomass. Herring: for Baltic spring spawner in 22–24 and IIIa still no increasing tendency detectable. North Sea Herring: furtherincreasing tendency, with 900 000 t over B lim, goodrecruitment. Herring in VIa: stable. Redfish: generallydecreasing tendency observed, a reduction of the fisheryis recommended. Signs of recovery, however, visible for some units
    Keywords: Fisheries ; fisheries management ; scientific advice ; stock management ; sustainable fishery ; North-East Atlantic ; North Sea ; Baltic Sea
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 111-126
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  • 4
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    Zustand der Herings- und Sprottenbestände in Nord- und Ostsee, östlichem Kanal und westlichen britischen Gewässern. Beurteilung durch die Herings- und Ostsee-Arbeitsgruppe des ICES, März/April 1999 (2021)
    In:  tomas.groehsler@vti.bund.de | http://aquaticcommons.org/id/eprint/3292 | 1240 | 2012-11-10 17:38:35 | 3292 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-27
    Description: Information is given about the results of the latest meeting of the Herring Assessment Working Group for the Area South of 62° N and the Baltic Fisheries Assessment Working Group, which were conducted in March and April at ICES headquarters in Copenhagen. The actual stock development and the catch options estimated for different assessment units of herring and sprat are presented. The spawning stock size of North Sea herring reached in 1998 for the first time since 1991 a level above the Minimum Biological Acceptable Level (MBAL) of 800 000 t. Keeping the fishery at the present level the spawning stock size should reach in 1999 a level of about 1.2 mio. t. For the Western Baltic Spring spawning herring stock no actual stock estimate was presented. Due to uncertainties in splitting the catches in North Sea autumn and Baltic spring spawners no analytical assessment was accepted.
    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 ; fisheries management ; scientific advice ; stock management sustainable fisheries ; herring ; sprat stocks ; Baltic Sea ; North Sea ; Channel ; western British waters
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 17-23
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  • 5
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    Aktuelle Entwicklung der Herings- und Sprottenbestände südlich des 62. Breitengrades (2021)
    In:  christopher.zimmermann@vti.bund.de | http://aquaticcommons.org/id/eprint/3320 | 1240 | 2012-11-10 18:12:00 | 3320 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-27
    Description: Information is given about the last meeting of the ICES “Herring Assessment Working Group for the Area South of 62° N”, conducted from 9.-18. March 1998 in Copenhagen. The actual stock development and the catch option estimations for different assessment units of herring and sprat are presented. The spawning stock size of North Sea herring was in 1997 still below the “Minimum Biological Acceptable Level” (MBAL) of 800 000 t. Keeping the fishing mortalities at the present level, the spawning stock size should reach a level of about 1.1 million tons by end of 1998. For the Western Baltic pring spawning herring stock no actual stock parameters were estimated. Due to uncertainties in splitting the catches in North sea autumn and Baltic spring spawners no analytical assessment was accepted.
    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 ; fisheries management ; assessment ; scientific advice ; Clupea harengus ; Sprattus sprattus ; recruitment ; herring ; sprat
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 68-72
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  • 6
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    Aktuelle Informationen zum Hering in der Ostsee im Hinblick auf deutsche Fischereiinteressen (2021)
    In:  tomas.groehsler@vti.bund.de | http://aquaticcommons.org/id/eprint/3770 | 1240 | 2012-11-09 13:46:51 | 3770 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-25
    Description: Germany is planning to construct a new herring factory on the Island of Rügen. This factory will need about 50 000 t of herring per year. For the German fishery this would mean to increase the past 10w 1andings of less than 15 000 t per year to a level which had a1ready been reached by the GDR before the reunification. News of less herring in the Baltic and a decline of German landings in 1998 compared to the years before have led to discussions whether the planned increase in landings could be reached and kept in the future. Information is given in view of German fishery interests about:• the actual assessed herring stock units and the corresponding recent stock development in the Baltic Sea• the Total Allowable Catch (TAC) values for the western and central Baltic Sea in 1998 and in 1999• the German landings during spring of the years 1993 to 1998 in the Greifswalder Bodden, main German fishery ground in the Baltic Sea
    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 ; stock data ; economy ; herring stocks ; stock development
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 176-179
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  • 7
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    Zustand und Entwicklung ausgewählter Fischbestände Einschätzung und Empfehlungen des ICES im Jahr 2004 (2021)
    In:  christopher.zimmermann@vti.bund.de | http://aquaticcommons.org/id/eprint/3084 | 1240 | 2012-04-27 13:08:01 | 3084 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: The state of North Atlantic, Baltic Sea and North Sea commercially exploited fish stocks are assessed annually by the International Council for the Exploration of the Sea (ICES). Estimates of the stock size (biomass), recruitment, landings, current exploitation rates and of future harvesting possibilities are provided for those stocks where sufficient information is available to conduct a full analytical assessment. For all other stocks, only landings and stock trends can be given. This paper presents the development of north-east Atlantic fish stocks which are of general or specific interest for the German fishery and fish industry. Generally, it may be concluded that most pelagic fish stocks, such as herring, sprat, mackerel, and blue whiting, are in good condition, while the majority of the demersal stocks, like cod, plaice or whiting are in critical state. There are, however, a number of remarkable exceptions to this pattern.
    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
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 43-109
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  • 8
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    Zur Fang- und Bestandssituation von Hering und Sprott in der Ostsee (2021)
    In:  tomas.groehsler@vti.bund.de | http://aquaticcommons.org/id/eprint/3808 | 1240 | 2012-11-10 18:15:31 | 3808 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-25
    Description: Information is given on the landings of herring and sprat in the Skagerrak/Kattegat and Baltic Sea. Based onassessment units used by the ‘Herring Assessment Working Group for the Area South of 62° N’ and the ‘Baltic FisheriesAssessment’ working group, the total landings are shown for the years 1974 to 1996. Further the quarterly landingsfor 1996 are listed on national basis by area/Sub-Division. In addition an actual description of the national fleetsoperating in the Skagerrak/Kattegat and Baltic Sea is given. At least the actual stock development and the catch options estimated by the corresponding working groups for different assessment units is presented.
    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 ; stock data ; landings
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 155-164
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