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  • Fisheries  (8)
  • herring  (2)
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  • 1
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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
    Type: article , FALSE
    Format: application/pdf
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    Format: 5-14
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  • 2
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    Diel differences in catches of Western Baltic Spring Spawning Herring Larvae (Clupea harengus) (2021)
    In:  sabine_rehberg@yahoo.de | http://aquaticcommons.org/id/eprint/2938 | 1240 | 2011-09-29 18:13:40 | 2938 | Johann Heinrich von Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei
    Details
    Publication Date: 2021-06-29
    Description: Comparative night and day catches of herring larvae were taken during the Rügen-Herring-Larval-Survey (RHLS) in 2007 and 2008 in the Greifswalder Bodden which is the main spawning area of the Western Baltic Spring Spawning Herring. The quantities and the size composition of larvae caught during night and day were examined. During night more larvae were caught compared to the samples taken at daytime, especially with larvae larger than 25 mm. This indicates avoidance reactions, which increase with the developmental stage of the larvae. The differences of the night and day catches are relatively constant until a length of about 25 mm, thus the night/day effect does not influence estimations concerning larvae smaller than 25 mm (e.g. N20 index). There might be an impact on estimations for larger larvae due to the night/day effect. For further research other aspects like cloud coverage at night, phase of the moon, underwater visibility and turbidity should be taken into account. These aspects might influence the avoidance reactions.
    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. University of Rostock, Johann Heinrich von Thünen-Institut, Institut für Ostseefischerei
    Keywords: Fisheries ; night-day ration ; Greifswalder Bodden ; statistical analysis
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 23-34
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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
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    Format: 17-23
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  • 5
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    Biologie des Stöckers in Nordsee und Nordostatlantik (2021)
    In:  christopher.zimmermann@vti.bund.de | http://aquaticcommons.org/id/eprint/3302 | 1240 | 2012-11-10 17:50:14 | 3302 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-27
    Description: This paper summarises the current knowledge on horse mackerel (Trachurus trachurus) biology. The synopsis is mainly based on the report of a recently conducted EU funded workshop on horse mackerel age reading. A brief description of this workshop and of recent developments in sampling of German commercial horse mackerel catches is given.
    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 ; Biology ; stock assessment ; otolith reading ; migration ; recruitment ; physiology ; ecology ; fisheries management ; horse mackerel ; Trachurus trachurus ; Atlantic
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 14-23
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  • 6
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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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  • 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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    Neue Erkenntnisse zur Verteilung des Nordseeherings auf die Gebiete der EU und Norwegens (2021)
    In:  christopher.zimmermann@vti.bund.de | http://aquaticcommons.org/id/eprint/3806 | 1240 | 2012-11-10 13:00:22 | 3806 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-25
    Description: A study by K.R. Patterson of the Marine Lab, Aberdeen, Scottland, presented to the EU comission in June 1997, investigated the distribution of Herring in the North Sea, i. e. the zonal attachment of the stock to EU and Norwegian waters, respectively. Evaluation of data from the ICES International Bottom Trawl Surveys and Herring Acoustic Surveys conducted in the last 10 years showed a wide variation in biomass and zonal attachment, depending on the type of survey used and the season sampled. However, a mean share of 16 % was estimated to be attached to the Norwegianwaters . In contrast to earlier analyses based on commercial catches there is little support that this proportion increases with increasing stock size. It is expected that this study will give rise to some discussion on the forthcoming EU-Norwegian consultations on North Sea herring.
    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 assessment ; TAC ; stock management ; spawning stock ; herring distribution
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 148-151
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