Search for dissertations about: "aves"
Showing result 1 - 5 of 11 swedish dissertations containing the word aves.
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1. Integrative taxonomy of birds : Studies into the nature, origin and delimitation of species
Abstract : Species are the basic currency in biodiversity studies but what constitutes a species has long been controversial. A major breakthough was the insight that most systematists agree that species are segments of population lineages, and that multiple lines of evidence should be employed and integrated, a procedure called integrative taxonomy. READ MORE
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2. Maternal programming: costs, benefits and constraints of maternal hormone transfer
Abstract : Avian mothers convey significant quantities of androgens (i.e. ?male? steroids) to their eggs, which are known to positively influence embryonic development, post-natal growth and competitive behaviour of the offspring. However, there is large inter-female variation in the amount of androgens transferred to the eggs. READ MORE
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3. Molecular systematics of Tyrannida (Aves: Passeriformes)
Abstract : .... READ MORE
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4. Molecular systematics of the antbird-ovenbird complex (Aves: Furnariida)
Abstract : This thesis concerns the phylogenetic relationships among suboscine birds with special emphasis on the antbird-ovenbird complex (Aves: Furnariida). The principal aim is to produce a framework for future systematic and comparative studies of suboscines by generating robust phylogenetic hypotheses from DNA-sequence data. READ MORE
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5. Responses to reduced industrial metal emissions : An ecotoxicological study on Pied Flycatcher (Ficedula hypoleuca, Aves)
Abstract : Metals have been used by humans for thousands of years, and this has resulted in increased concentrations in the biosphere. The environment around point-sources, such as mines and smelters, are of particular concern, as metals may accumulate to high concentrations, and potentially reach levels toxic to the local flora and fauna. READ MORE