Browsing Økologi og evolusjon by Title
Now showing items 54-73 of 123
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(Master thesis / Masteroppgave, 2014)European grayling from a common-gene pool and with a known ancestry were released into headwaters of a river system in Lesja, Oppland, Norway, about a century ago. These grayling dispersed downstream, and as a result there ...
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(Master thesis / Masteroppgave, 2013)Sorghum is ranked the fifth most produced food crop in the world, and is a dietary staple for over 500 million people in over 30 countries. It is the second most produced food crop in Africa, where cultivation of local ...
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(Master thesis / Masteroppgave, 2015)Section Cochlearia (Brassicaceae) includes highly polymorphic species complexes with regard to ploidal level, ecological adaptation and distribution. Low levels of chloroplast DNA divergence suggest that taxa most likely ...
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(Master thesis / Masteroppgave, 2015)Various stressors such as higher temperatures, grazing by sea urchins, and anthropogenic effects may threaten kelp forests around the world. Conservation efforts can benefit from an understanding of current and historic ...
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(Master thesis / Masteroppgave, 2017)
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(Master thesis / Masteroppgave, 2014)
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(Master thesis / Masteroppgave, 2018)
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Hybridization or morphological variation? A study of Veronica spicata and V. longifolia (Plantaginaceae) and their putative hybrid in the Oslo areaRestricted Access (Master thesis / Masteroppgave, 2015)Hybridization is an important evolutionary force. It may lead to the formation of new, adaptive genotypes, or even the formation of a new species. However, it also may lead to replacement, or merging of species. Hybridization ...
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(Master thesis / Masteroppgave, 2015)Fisheries activities and the development of more efficient fishing gear, have had detrimental effects in commercial stocks. This occurs largely as a result of negative selection acting on certain individuals during the ...
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(Master thesis / Masteroppgave, 2017)
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(Master thesis / Masteroppgave, 2019)In aquatic environments predator threats can be present as chemical cues which can induce defensive traits in prey. Such predatory induced cues can be responsible for changes in morphology, life histories and behavior. ...
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(Master thesis / Masteroppgave, 2013)
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(Master thesis / Masteroppgave, 2013)The dry rot fungus Serpula lacrymans is known as one of the most aggressive fungal house invaders in temperate regions. Recent genetic and phylogeographic studies have shed light on the distribution, colonisation and ...
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(Master thesis / Masteroppgave, 2020)Character displacement has been a process discussed by biologist ever since Darwin visited the Galapagos in the 19th century. Similar species occurring together will sometimes diverge in characters to avoid hybridization ...
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(Master thesis / Masteroppgave, 2019)
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(Master thesis / Masteroppgave, 2019)In the Arctic tundra several different species of herbivores co-exist, with potentially large effects on tundra ecosystem functions and dynamics. Understanding the herbivores trophic interactions therefore provides essential ...
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(Master thesis / Masteroppgave, 2016)
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(Master thesis / Masteroppgave, 2015)
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(Master thesis / Masteroppgave, 2013)Host specificity among ectomycorrhizal (ECM) fungi seems to vary among different habitats, and it is difficult to draw general conclusions across environments. Little is known about the host specificity among arctic ECM ...
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(Master thesis / Masteroppgave, 2014)Reproductive barriers between diverging taxa are necessary for speciation to occur. Premating barriers are thought to be of especially great importance, such as plumage colour which is often used in species recognition and ...