Search for dissertations about: "Baltic herring Clupea harengus"

Showing result 1 - 5 of 13 swedish dissertations containing the words Baltic herring Clupea harengus.

  1. 1. Size-selection of herring (Clupea harengus membras) in a sustainable fishery

    University dissertation from Umeå : Sveriges Lantbruksuniversitet

    Author : Mikael Lundin; Högskolan i Gävle.; Sveriges lantbruksuniversitet.; [2012]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; herrings; clupea harengus; size; bycatch; baltic sea;

    Abstract : .... READ MORE

  2. 2. Dynamics of astaxanthin, tocopherol (Vitamin E) and thiamine (Vitamin B1) in the Baltic Sea ecosystem Bottom-up effects in an aquatic food web

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Norbert Häubner; Uppsala universitet.; [2010]
    Keywords : Baltic Sea; carotenoids; astaxanthin; tocopherols; Vitamin E; thiamine; Vitamin B1; pelagic food web; eutrophication; M74; phytoplankton; zooplankton; sprat; Sprattus sprattus balticus; herring; Clupea harengus; salmon; Salmo salar; cod; Gadus morhua; High Performance Liquid Chromatography HPLC ; electrochemical detection ECD ;

    Abstract : The thesis combines laboratory experiments and field expeditions to study production, transfer and consumption of non-enzymatic antioxidants and thiamine in an aquatic food web. In particular, I (1) documented spatial and seasonal variation of tocopherols and carotenoids in the Baltic Sea pelagic food web, and (2) examined the effects of abiotic and biotic factors on tocopherol, carotenoid and thiamine concentrations in phytoplankton, zooplankton and fish. READ MORE

  3. 3. Feeding ecology of Baltic Sea herring (Clupea harengus L.) : field and model studies of a dominant zooplanktivor

    University dissertation from Stockholm : Department of Systems Ecology, Stockholm University

    Author : Fredrik Arrhenius; Stockholms universitet.; [1995]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

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  4. 4. Environmentally relevant chemical disruptors of oxidative phosphorylation in Baltic Sea biota Exposure and toxic potentials

    University dissertation from Stockholm : Department of Environmental Science and Analytical Chemistry, Stockholm University

    Author : Anna-Karin Dahlberg; Stockholms universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Oxidative phosphorylation; OH-PBDEs; MeO-PBDEs; PBDEs; long-tailed duck Clangula hyemalis ; Baltic herring Clupea harengus ; Baltic blue mussel Mytilus trossulus x Mytilus edulis ; Baltic Sea; Environmental Chemistry; miljökemi;

    Abstract : This thesis focuses on toxicity and occurrence of hydroxylated polybrominated diphenyl ethers (OH-PBDEs) in Baltic Sea biota. The aims were to assess OH-PBDEs potency for disruption of oxidative phosphorylation (OXPHOS) and determine their and related compounds exposure in Baltic blue mussel, herring and long-tailed duck. READ MORE

  5. 5. Zooplankton growth and trophic linkages Implications for fish feeding conditions in the Baltic Sea

    University dissertation from Stockholm : Department of System Ecology, Stockholm University

    Author : Towe Holmborn; Stockholms universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; AARS activity; biochemical markers; Clupea harengus; copepod physiology; food web interactions; non-indigenous species; RNA-based indices; Sprattus sprattus; stable isotopes; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Marine ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Marin ekologi; marin ekologi; Marine Ecology;

    Abstract : The aim of this Thesis was to improve our understanding and assessment of feeding conditions for zooplanktivorous fish in the Baltic Sea.We investigated (papers I, II) the usefulness of biochemical proxies for assessments of growth and metabolic rates in the dominant Baltic copepod Acartia bifilosa. READ MORE