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  • 1
    Electronic Resource
    Electronic Resource
    Acclimation effects on routine oxygen consumption of the Antarctic fish Pogonophryne scotti (Artedidraconidae) (1988)
    Springer
    Polar biology 9 (1988), S. 125-128 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Routine oyxgen consumption ( $$\dot VO_2$$ ) of the artedidraconid fish Pogonophryne scotti at-1°C is determined using a flow-through respirometer. The metabolic rate during an 8 to 12 h acclimation period is found to exceed the actual routine metabolic level by a factor of 2 to 4. $$\dot VO_2$$ of 7 P. scotti varies between 2.5 mg/h and 4.4 mg/h for fish weighing 58 g to 210 g. The exponent of the oxygen consumption/weight equation is 0.46. From this relation, routine $$\dot VO_2$$ of a 100 g fish is calculated as 2.9 mg/h. The significance of acclimation times and the use of standardized methods for future respiration measurements of Antarctic fish are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00442040
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  • 2
    Electronic Resource
    Electronic Resource
    Spatial distribution of Pleuragramma antarcticum (Pisces: Nototheniidae) near the Filchner- and Larsen ice shelves (Weddell sea/antarctica) (1984)
    Springer
    Polar biology 3 (1984), S. 231-236 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In the zooplankton collected during three German Antarctic expeditions to the southern Weddell Sea in 1979/80, 1980/81 and 1983, the post-larvae of the nototheniid fish Pleuragramma antarcticum were found in 71–94% of the samples and represented 85–98% in numbers of all fish caught. In 1983, the abundance of post-larvae was up to 88 ind./m2 (corresponding to 3 ind./m3). Highest concentrations were generally found over the continental slope and innershelf depressions. More than 70% of the post-larvae were caught in the upper 50–100 m water layer, in the well stratified “Summer Water” of -1.3 to -0.5°C. The Summer Water is shifted towards the outer edge of the shelf by Ekman transport and accumulation of post-larvae in the slope front and eddies can be explained by this drift. Older Pleuragramma antarcticum of age 1 resemble in their vertical distribution the juveniles and adults, 40–60% of which were caught on the shallower parts of the shelf in cold “Ice Shelf Water” of -1.8 to -2.1°C in depths below 200 m. Mean abundances of the yearclasses varied by a factor of 16 in age 0 fish and by factor of 10 in age 1. The size of a yearclass may be related to the varying appearance and persistence of an ice free coastal polynya.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292628
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  • 3
    Electronic Resource
    Electronic Resource
    Stomach contents of the Antarctic Silverfish Pleuragramma antarcticum from the southern and eastern Weddell Sea (Antarctica) (1985)
    Springer
    Polar biology 5 (1985), S. 43-48 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The stomach contents of 142 Pleuragramma antarcticum from the southernmost part of the Weddell Sea (Gould Bay: 77°19′S) and from the eastern coast (72°–74°S) were analyzed. The fish were collected in February 1983 and stored frozen. Size range of the investigated specimens was from 6.4 cm SL (7.3 cm TL) to 21.9 cm SL (24.1 cm TL). The fish were caught by bottom trawl (Gould Bay) and Agassiz Trawl and pelagic RMT-m net in the upper 300 m layer at the eastern coast, respectively. Thirty-six stomachs were empty or contained sand only. The most important prey in terms of biomass were euphausiids, which occurred in 49 stomachs at a mean number of 2. Their dry weight was estimated to be 15–50 times that of the next important food items, which were copepods, gastropods and gammarids. Krill (Euphausia superba) constituted up to 14% of the euphausiids in the diet of fish caught in the eastern Weddell Sea. The rest was usually made up by Euphausia crystallorophias. This species was taken with preference even when the abundance of E. superba in accompanying plankton catches was 16 times higher. In the Gould Bay, gastropods were frequently eaten despite high numbers of copepods in the plankton, whereas in the eastern Weddell Sea, copepods were abundant both in plankton and in the stomach content. The almost complete absence of the early stages of fish in the diet of Pleuragramma antarcticum in the southern and eastern Weddell Sea is due to a pronounced vertical segregation of fish of different sizes. This distribution pattern is thought to be an adaptive mechanism to avoid intraspecific predation, as 90% of the ichthyoplankton in that area is Pleuragramma antarcticum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00446044
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  • 4
    Electronic Resource
    Electronic Resource
    Book review (1989)
    Springer
    Polar biology 10 (1989), S. 239-239 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238501
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  • 5
    Electronic Resource
    Electronic Resource
    Feeding patterns of post-larval and juvenile notothenioids in the southern Weddell Sea (Antarctica) (1990)
    Springer
    Polar biology 10 (1990), S. 255-260 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The food of 163 juvenile specimens of 13 species of notothenioid fishes collected in the southern Weddell Sea (Antarctica) was analyzed. Investigated fish size range was 3–13 cm SL. Principal food items were calanoid copepods Metridia gerlachei, Calanoides acutus, and Calanus propinquus; all developmental stages of Euphausia crystallorophias, and post-larval nototheniid fish Pleuragramma antarcticum. Diet of juvenile channichthyids is limited to few species of euphausiids and fish in the size 〉 10 mm, but does not include significant numbers of copepods. Pelagic stages of nototheniids feed on copepods and/or larval euphausiids smaller than 10 mm. At similar size, nototheniids and bathydraconids take smaller prey items than channichthyids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238422
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  • 6
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    Maßnahmenkatalog für eine ausgewogenere und rationellere Bewirtschaftung der von der deutschen Fischerei genutzten Fischereiressourcen im EG Meer (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4264 | 1240 | 2012-11-10 19:46:52 | 4264 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: Obgleich die Nordsee eines der produktivsten Schelfmeere der Welt ist, reichen die Fischereiressourcen nicht aus, um allen zur Zeit aktiven Fischern für die nächsten Jahre ein wirtschaftliches Überleben zu garantieren. Darüberhinaus besteht die Gefahr, daß andauernde Uberfischung zu einer nachhaltigen Schädigung der Fischbestände und des Ökosystems führt. Es ist daher notwendig, zu einem langfristig ausgewogeneren Verhältnis zwischen den Ressourcen und der Intensität der Fischerei zugelangen. Die Bundesforschungsanstalt für Fischerei in Hamburg hat im Jahr 1993 eine Expertenrunde zu diesem Themenkreis zusammengerufen und eine Zusammenstellung von aus wissenschaftlicher Sicht wünschenswerten und sinnvollen Maßnahmen zum langfristigen Erhalt der Fischbestände in derNordsee erarbeitet, der im Folgenden der Öffentlichkeit vorgestellt werden soll.
    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: Management ; Fisheries ; sustainable fisheries ; fisheries management ; scientific advice
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 3-18
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  • 7
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    Nachhaltige Entwicklung der Hochseefischerei (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/3264 | 1240 | 2012-11-10 14:38:53 | 3264 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-26
    Description: The poor situation of fish stocks worldwide pointed out byFAO has led to a reconsideration of fishing concepts internationally. A brief outline of the world fishing situation is given, as well as that of the EU and Germany. Explanations of basic fishing parameters like catch, recruitment and fishing mortality are given and used to expound and graphically show the relation to overfishing and the new concept of the ”precautionary priciple” and ”precautionary approach” for the goal of a sustainable fishery. This leads to recommendations for research and actions in respect to selectivity, adjustment of fishing capacity and new concepts of utilisation.
    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 policy ; fisheries management ; stock management ; overfishing ; recruitment ; discards ; bycatch ; EU regulations ; scientific advice
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 163-179
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  • 8
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    Pro und Kontra Industriefischerei (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/3804 | 1240 | 2012-11-10 18:16:57 | 3804 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-25
    Description: Bei ordnungsgemäßer Durchführung ist aus wissenschaftlicher Sicht gegen eine maßvolle Industriefischerei auch in der Nordsee nichts einzuwenden. Wichtige Kriterien sind allerdimgs, dass die genutzten Bestände wissenschaftlich überwacht werden und negative Effekte auf das Nahrungsnetz vermieden werden.
    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 ; industrial fisheries ; stock management ; North Sea ; by catch ; negative effects
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 136-139
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  • 9
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    Fisch als Wirtschaftsobjekt (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4244 | 1240 | 2012-11-10 19:13:58 | 4244 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: Redemanuskript eines Vortrages vor dem Wirtschaftsausschuß für Außenhandelsfragen des Bundesministeriums für Ernährung, Landwirtschaft und Forsten am 26.4.95 in Bonn
    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: Information Management ; economic aspects ; fisheries ; stock management ; report
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 111-113
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  • 10
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    "Global Change" und das Meer als Nahrungsquelle (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4228 | 1240 | 2012-11-10 19:14:39 | 4228 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-30
    Description: The potential importance of marine produetion as a protein ressource for a growing human population can hardly be overestimated. Climatic changes in the marine environment may affect marine production in a significant way. Increasing levels of UV-B may decrease primary production and thus diminish the food base for harvestable marine ressources. Direct effects on early stages of fishesmay occur. Temperature changes can lead to additional mortality in the early phase of life histories of fishes. In spite of the potentially negative scenario, actual effects of global change on the ressources have not been detected so far. The marine organisms dispose of a significant level of pre-adaptation to changes of environmental factors both on a seasonal and an interannual scale. Effects on marine life may therefore be less dramatic than those on terrestrial systems, which are more directly linked with the exponentially growing human population.
    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: Information Management ; abiotic effects ; environmental factors ; fisheries ; forecasts
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 3-8
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