Sökning: "colouration"

Visar resultat 11 - 14 av 14 avhandlingar innehållade ordet colouration.

  1. 11. Competition, Coexistence and Character Displacement : In a Young Avian Hybrid Zone

    Författare :Niclas Vallin; Anna Qvarnström; Andrew Hendry; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Competition; coexistence; hybridization; ecological speciation; character displacement; pied flycatcher; collared flycatcher; Biology; Biologi; Animal Ecology; Zooekologi;

    Sammanfattning : This thesis investigates the ecological and evolutionary implications of a recent secondary contact between two closely related bird species: collared (Ficedula albicollis) and pied (F. hypoleuca) flycatchers. LÄS MER

  3. 12. Piscivore-prey fish interactions - consequences of changing optical environment

    Författare :Lynn Ranåker; Enhet akvatisk ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; behaviour; brownification; freshwater ecosystems; growth; piscivore-prey fish interactions; selectivity; turbidity;

    Sammanfattning : Predator-prey interactions are a primary structuring force in aquatic systems. A change in the predator-prey interactions may cause a change in the strength of trophic cascades and even resulting in ecosystem shifts. LÄS MER

  4. 13. Investigating the impacts of Late Pleistocene climate change on Arctic mammals using palaeogenomics

    Författare :Edana Lord; Love Dalén; Mirte Bosse; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; palaeogenomics; Arctic; Late Pleistocene; past climate; collared lemming; woolly rhinoceros; Norwegian lemming; muskox; demography; population structure; speciation; adaptation; genome erosion; Systematic Zoology; zoologisk systematik och evolutionsforskning;

    Sammanfattning : The climatic fluctuations of the Late Pleistocene likely had a large impact on the evolutionary history of Arctic species. Palaeogenomics is a useful tool to shed light on how past populations responded to these climatic shifts and the associated ice sheet dynamics and sea level change. LÄS MER

  5. 14. Crossing the threshold : Visualization design and conceptual understanding of evolution

    Författare :Andreas C. Göransson; Lena Tibell; Konrad Schönborn; Anat Yarden; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Evolution; Natural selection; Visualization; Conceptual understanding; Conceptual change;

    Sammanfattning : The theory of evolution is considered the unifying theory of biology. An accurate understanding of evolution is vital both for the understanding of diverse topics in biology, but also for societal issues such as antibiotic resistance or biodiversity. LÄS MER