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  • recruitment  (14)
  • stock development  (9)
  • 1
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    Optimistische Prognosen nur für den Schellfisch-, Wittling- und Sprottnachwuchs in der Nordsee (2021)
    In:  gerd.wegner@vti.bund.de | http://aquaticcommons.org/id/eprint/4309 | 1240 | 2012-11-10 20:06:44 | 4309 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: From January 22 to February 12, 1993, "Walther Herwig" participated in the ICES coordinated International Bottom Trawl Survey (IBTS, formerly International Young FishSurvey (IYFS)) in the North Sea. In total all participating nations covered 369 fishing stations, 65 of which were investigated by "Walther Herwig". Preliminary results show that the youngest yearclasses of haddock, whiting, sprat and Norway pout are well above average whereas herring in his second year of life is only average. No signs of a recovery of the North Sea mackerel stock could be detected. The measured temperature data show a more or less mean situation during the period under review.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; recruitment ; stock development ; ozeanographic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 54-62
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  • 2
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    Zur Lage der Jungfischbestände in der Nordsee (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4343 | 1240 | 2012-11-10 23:01:56 | 4343 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; young fish ; North Sea ; Bottom Traw Survey ; stock development ; recruitment ; oceanographic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 60-70
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  • 3
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    Herings- und Wittlingsnachwuchsjahrgänge gut, doch Kabeljau weiterhin schlecht (113. Reise FFS "Walther Herwig", Teil I, vom 23.01.bis 15.02.1991, ICES-Young-Fish-Survey) (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4379 | 1240 | 2012-11-11 16:33:30 | 4379 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; recruitment ; North Atlantic ; stock development ; Gadus morhua ; Merlangius merlangus ; Clupea harengus ; oceanographic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 43-48
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  • 4
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    Jungfischsituation in der Nordsee wenig ermutigend - (104. Reise FFS "Walther Herwig", Teil I, vom 31.01.-25.02.90, ICES-Young Fish Survey) (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4423 | 1240 | 2012-11-11 17:14:05 | 4423 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; recruitment ; North Sea ; Young fish ; stock development ; oceanographic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 43-49
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  • 5
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    Internationale Jungfischuntersuchungen in der Nordsee 1984 (132. Reise des FFS "Anton Dohrn" vom 6.2. -8.3.1984) (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/5609 | 1240 | 2012-11-12 23:25:52 | 5609 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-11
    Description: Johann Heinrich von Thunen-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 ; youngfish survey ; North Sea ; age composition ; length distribution ; recruitment ; cod ; Saithe ; oceanographic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 71-78
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  • 6
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    Internationale Jungfischuntersuchungen in der Nordsee 1982 (115. Reise des FFS "Anton Dohrn" vom 20.2. - 15.3.1982) (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/5727 | 1240 | 2012-11-13 22:12:44 | 5727 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-12
    Description: Johann Heinrich von Thunen-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 ; youngfish survey ; international cooperation ; stoch development ; recruitment ; oceanographic data ; North Sea
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 57-60
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  • 7
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    Internationales Jungfischprogramm des ICES von Januar bis März 1988 beendet: Weiterhin gute Aussichten für den Heringsfang in der Nordsee (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/5372 | 1240 | 2012-11-11 18:36:00 | 5372 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-10
    Description: Johann Heinrich von Thunen-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 ; youngfish survey ; herring ; Clupea harengus ; North Sea ; cod ; Gadus morhua ; oceanography ; stock development
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 47-56
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  • 8
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    Optimismus nur für Sprotte, Wittling und Stintdorsch (2021)
    In:  gerd.wegner@vti.bund.de | http://aquaticcommons.org/id/eprint/3280 | 1240 | 2012-11-10 17:31:57 | 3280 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-27
    Description: 70 half-hour tows using a Grand Ouverture Verticale (GOV) and – for the first time for R.V. “Walther Herwig III” – 102 plankton stations with a special plankton net were this years’ German contribution to the International Bottom Trawl Survey (IBTS). Results show only for sprat, whiting, and Norway pout relatively good incoming year-classes whereas indices for cod, haddock, mackerel, and herring point at rather poor recruitment. Strongest herring larvae concentrations (〈 50 larvae/haul) were observed in the MorayFirth area, on the Fladenground and off the Jutland coast. 75 hydrographic stations showed the water masses in the area of investigation to be vertically mixed and homogenous. However, temperatures measured were 0.5 K to 1 K above longterm means.
    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 development ; international survey ; North Sea ; stock assessment ; fisheries management ; scientific advice ; sustainable fisheries ; sprat ; whiting ; Norway pout
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 3-9
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  • 9
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    Unterschiedliche Trends beim Fischnachwuchs der Nordsee (2021)
    In:  gerd.wegner@vti.bund.de | http://aquaticcommons.org/id/eprint/3326 | 1240 | 2012-11-10 17:52:31 | 3326 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-27
    Description: During this years’ International Bottom Trawl Survey (IBTS) of ICES, a total of 407 half hour tows were made in the North Sea including Skagerrak in January/ February, 1998. Results indicate except for sprat no outstanding incoming yearclasses for cod, haddock, saithe, Norway pout, whiting, herring, and mackerel. Most of the adult cod and saithe investigated did not show normal gonad development for this time of the year. The abundance of skates and sharks was still low. Results of 68 hydrographical stations of R.V. “Walter Herwig III” showed in contrast to four preceeding IBTS-surveys a warming of the northern North Sea of approx. 1 K.
    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 ; recruitment ; stocking ; cod ; Gadus morhua ; fisheries management ; assessment ; international monitoring ; hydrography
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 103-108
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  • 10
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    Über die Herkunft des starken Kabeljau-Jahrgangs 1996 in der Nordsee (2021)
    In:  gerd.wegner@vti.bund.de | http://aquaticcommons.org/id/eprint/3807 | 1240 | 2012-11-10 18:32:23 | 3807 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-25
    Description: Cod in the North Sea is expected to reach „Safe biological limit“ due to a strong 1996 year-class. The cod fry was seen first as 5 cm fingerlings in the catches during a hydroacoustic survey in the southeastern North Sea. Back-calculations of the water drift show with high probability that the respective spawning ground was situated in the southwestern North 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 ; recruitment ; stock data ; hydroacoustic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 152-154
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