Sökning: "habitat selection"
Visar resultat 11 - 15 av 118 uppsatser innehållade orden habitat selection.
11. The perfect wing, The perfect trade-off? : What implements the main selection pressure on wing morphology?
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Selection pressure is a constant force in evolution, pushing birds and their wings towards an optimal shape and structure, were increasing performance, and minimizing the costs is central. But even though the science of aerodynamics can provide calculations of the optimal construction for the wing in different situations this rarely directly correspond to what is observed in nature. LÄS MER
12. Quantity and quality of oaks (Quercus) as suitable habitats for the longhorn beetle species Plagionotus detritus : An inventory study in Stockholm and Uppsala County, Sweden
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : The longhorn beetle Plagionotus detritus is associated with newly dead oak wood and is declining throughout its distribution range. In Sweden, P.detritus has displayed one of the most dramatic reductions in distribution recorded for insect species and is near regional extinction. LÄS MER
13. Bear in mind! A study about the effect of bear predation on the choice of calving site and site fidelity by female moose in Sweden
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Selecting a suitable calving site is important for ungulates, especially when predators are present. Brown bears (Ursus arctos) predate on moose calves (Alces alces) and therefore influence the reproductive success of the moose. LÄS MER
14. Associations between body size polymorphism in Arctic charr and benthic invertebrate communities – clues to mechanisms for population differentiation?
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Many fish populations in the north have divided into coexisting ecotypes that differ in body size. While such polymorphic fish populations have been studied for many years, the understanding of how different types of selection contribute to the formation of dwarf- and giant ecotypes remains limited. LÄS MER
15. Spatial co-occurrence between wind power and boreal forestlands with lichen important for reindeer browsing : a landscape analysis
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : To meet the increasing demand of renewable energy, Sweden aim to expand the onshore wind power production from 30 TWh today, to 80 TWh by 2040. Most wind power sites will be placed in Northern Sweden, which coincides with the reindeer husbandry area, where indigenous Sami have a legislated reindeer husbandry right. LÄS MER
