Search for dissertations about: "fish stock assessment"

Showing result 1 - 5 of 6 swedish dissertations containing the words fish stock assessment.

  2. 1. A statistical model for fish stock assessment in the Gulf of Bothnia

    Author : Ann-Charlotte Hallberg; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  4. 2. Casting for Knowledge and Landing Understanding : Exploring the management of Swedish recreational fisheries as social-ecological systems

    Author : Samuel Blyth; Patrik Rönnbäck; Malgorzata Blicharska; Stian Stensland; Shannon D. Bower; Anssi Vainikka; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Recreational Fisheries; Fisheries Management; Catch Release; Social-ecological System; Angler Behaviour; Fish Behaviour; Fish Welfare; Stakeholder Engagement; Natural Resources and Sustainable Development; Naturresurser och hållbar utveckling;

    Abstract : The successful management of recreational fisheries must balance ecological, and social goals; select from and implement a range of management tools; operate under often complex governance structures; and contend with diverse human stakeholders’ expectations, desires, and actual behaviour in response to management activities. This complexity also means that there are many knowledge and research gaps regarding the information needed to meet the requirements of specific fisheries. READ MORE

  5. 3. Increasing the biological knowledge of Baltic Sea cod: growth, movements and reproductive potential from historical and contemporary data

    Author : Monica Mion; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Knowledge about life-history traits of commercially exploited fish stocks and their possible changes over time is essential for implementing a sustainable management. Biological parameters such as growth rate, fecundity and movement patterns are in fact, underlying determinants for stock responses to environmental forcing and fishing exploitation. READ MORE

  6. 4. The decline of great Arctic charr in Lake Vättern : empirical and theoretical analyses of suggested causes

    Author : Malin Setzer; Tomas Jonsson; Bo Ebenman; Mark C. Emmerson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap;

    Abstract : Human activity is affecting species and ecosystems all over the world. In aquatic systems negative trends can be seen for many fish stocks and potential consequences of this, for ecosystem structure and functions, are of particular concern. READ MORE

  7. 5. Food Web Ecology -- individual life-histories and ecological processes shape complex communities

    Author : Martin Hartvig; Evolutionär ekologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; food web; community ecology; community assembly; size-structure; life-history omnivory; ontogeny; trophic interactions; trait based model; topology; emergent organisation; size-spectrum;

    Abstract : This thesis sets out a food web framework for size-structured populations. The framework enables an ecological approach to food web modelling as the individual life-history from birth, through maturation, and ultimately death is explicitly resolved with the use of bioenergetics based on individual body size. READ MORE