Sökning: "natal dispersal"
Visar resultat 6 - 10 av 16 avhandlingar innehållade orden natal dispersal.
6. Life history decisions in a changing environment : A long-term study of a temperate barnacle goose population
Sammanfattning : This thesis shows that climate and increasing population density have profound effects on survival, age at first reproduction, and natal dispersal in a rapidly increasing temperate barnacle goose Branta leucopsis population on Gotland, Sweden.Colony size was found to be the most important fitness-determinant because of strong density-dependent effects on reproduction. LÄS MER
7. The links between dispersal and individual fitness: correlation or causality? : Exploring mechanisms using correlative and experimental approaches in a passerine bird species, the collared flycatcher
Sammanfattning : Dispersal is commonly defined as the movement of an individual from its natal orprevious breeding site to a new breeding site. Because dispersal involves movements ofindividuals and genes among populations, it is recognized as a key life history trait withstrong effects on many ecological and evolutionary processes such as populationdynamics and genetics but also species spatial distribution or response to brutalenvironmental variations induced by human activities. LÄS MER
8. The Nepotistic Parent; Predator Protection, Kinship and Philopatry
Sammanfattning : Evolution is fuelled by independent reproduction events. Yet, the offspring of at least three percent of all bird species postpone dispersal and forego independent reproduction. LÄS MER
9. Alloparental care and social dynamics in the fallow deer (Dama dama)
Sammanfattning : In mammals, a sex difference exists in natal dispersal with females remaining in the natal area and males generally leaving the area of birth. Female groups are regarded as the basic social unit of many mammalian species, and in species with overlapping generations groups may develop a matrilineal structure. LÄS MER
10. Genomic studies of contemporary processes in wild populations : with the Scandinavian brown bear as a model
Sammanfattning : Genomic tools can greatly facilitate our understanding of wild populations. For the purposes of ecology and conservation, the most pertinent insights into wild populations are those that are contemporary. LÄS MER
