Search for dissertations about: "zoologisk ekologi"
Showing result 1 - 5 of 55 swedish dissertations containing the words zoologisk ekologi.
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1. Biology, ecology and anthropogenic threats of Indo-Pacific bottlenose dolphins in east Africa
Abstract : This thesis examines the biology, ecology and anthropogenic threats of Indo-Pacific bottlenose dolphins (Tursiops aduncus) off Zanzibar, Tanzania, based on research conducted and samples collected between 2000 and 2008. Distribution and occurrence are described based on incidental catches (bycatch) in gillnet fisheries. READ MORE
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2. Offshore wind farms - ecological effects of noise and habitat alteration on fish
Abstract : There are large gaps in our understanding how fish populations are affected by the anthropogenic noise and the alteration of habitat caused by the construction and operation of offshore wind farms. These issues are of great importance as the construction of offshore wind farms will increase all over the world in the near future. READ MORE
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3. Life at stake when playing hide and seek : Concealing effects of prey colouration and visual backgrounds
Abstract : A prey animal can use different strategies to avoid becoming eaten by predators. One such widely recognised strategy is the use of body colouration to decrease the risk of becoming detected, i.e. cryptic colouration. READ MORE
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4. Phylogenetic perspective on host plant use, colonization and speciation in butterflies
Abstract : In this thesis we have studied speciation in three butterfly genera Polygonia (Nymphalidae, Nymphalini), Pararge (Nymphalidae, Satyrinae) and Celastrina (Lycaenidae: Polyommatinae). In the first paper a dated phylogeny, based on molecular data, of Polygonia was constructed. We found strong conflict between the nDNA and mtDNA datasets. READ MORE
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5. Harbour seals (Phoca Vitulina) and tourists in Iceland : Who´s watching who?
Abstract : Wildlife tourism is at the moment a fast growing sector in the tourism industry. Therefore, there is a need for balancing the protecting of wildlife with the right of tourists and operators to use nature as a resource. Mutual exchange and acceptance of research results between biological- and tourism research has until recently been scarce. READ MORE