Search for dissertations about: "juvenile cod"
Showing result 1 - 5 of 7 swedish dissertations containing the words juvenile cod.
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1. The dynamics in harvested populations
Abstract : We are interested in the effect of harvesting on population fluctuations and for that purpose we develop and analyze an age-structured model where recruitment is a stochastic process and the adult segment of the population is harvested. When a constant annual harvest is taken the coefficient of variation of the adult population increases for most parameter values due to the age truncation effect, i. READ MORE
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2. Interactions between cytochrome P450 and estrogenic compounds in fish
Abstract : DISSERTATION ABSTRACT Hasselberg, Linda. Interactions between cytochrome P450 and estrogenic compounds in fish. Department of Zoophysiology, Göteborg University, Box 463, SE-405 30 Göteborg, Sweden Contamination by various pollutions is an environmental concern. READ MORE
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3. Understanding the spatiotemporal dynamics of demersal fish species in the Baltic Sea
Abstract : Species are not homogeneously distributed and the interdependencies between trophic interactions, environmental factors and anthropogenic forcing determine how their distribution changes over time. Hence taking into account both the spatial and temporal components of the dynamics of potentially interacting species is essential in management and conservation. READ MORE
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4. Fishing the gene pool : Genetic structure, admixture and behavioural complexity in fisheries management
Abstract : Prudent management of marine fish resources relies on separation and management of biologically meaningful groups of conspecifics, termed fishery stocks, often depicted as self-sustaining, spatiotemporally separated and demographically independent entities. Such stock discrimination has however proven challenging. READ MORE
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5. Fish in the coastal seascape : exploring ecological processes and connectivity for conservation of temperate fish communities
Abstract : The need to understand patterns and processes in the marine environment has never been so profound as today, particularly as anthropogenic pressures upon coastal regions are drastically affecting habitats and species across a vast range. One approach to further understand these patterns and processes is through the use of seascape ecology methods. READ MORE