Browsing Avhandlinger / Dissertations by Subject "VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480"
Now showing items 1-13 of 13
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Browsing by giraffe in heterogeneous savanna
(Doctoral thesis, 2017)Understanding foraging behaviour of wild animals is an important step for wildlife management and conservation and for learning the animal’s role in the ecosystem. I used Maasai giraffe (Giraffa camelopardalis tippelskirchi ... -
Climate change and the race for survival: exploring the effects of climate change on the phenology and distribution of native mountain hares (Lepus timidus) and invasive European hares (Lepus europaeus)
(Ph.d.-avhandlinger i anvendt økologi og bioteknologi;39, Doctoral thesis, 2024)Arter som lever i miljøer med store forskjeller mellom årstidene utvikler ofte tilpasninger til miljøet sitt. Å bytte mellom sommer- og vinterdrakt er en tilpasning til sesongavhengig snødekke som finnes hos flere pattedyr- ... -
Ecological mechanisms driving the anti-predator defense response in Crucian carp (Carassius carassius): Variation in morphology, resource use, and life-history strategies along a gradient of predation risk
(Ph.d.-avhandlinger i anvendt økologi og bioteknologi;6, Doctoral thesis, 2021)Predation is one of the main structuring forces of freshwater communities, influencing population dynamics, phenotypic variation, resource use, and life-history traits within and among prey populations. In order to counteract ... -
Ecology of Snow Leopards in the Central Himalayas, Nepal
(Doctoral thesis, 2018)The snow leopard (Panthera uncia) is an elusive large carnivore distributed in the mountains of Central Asia. The highly camouflaged fur and harsh environment of the cat’s habitat have made ecological studies challenging. ... -
Molt stage, wing bar patterns and digital photography as tools for assessing age distribution and recognizing individuals of Great Grey and Snowy Owls
(Doctoral thesis, 2020)The world is heating up. The climate is changing, with increasing temperature changes towards the Arctic. Northern ecosystems of tundra and taiga are subject to changes, even in the most remote areas void of human presence. ... -
Movement across scales: red fox spatial ecology
(Doctoral thesis, 2020)Rødrevens forflytningsmønster på forskjellige romlige skalaer Menneskelig påvirkning på naturlige habitater kan medføre reduserte bevegelsesmuligheter for noen dyrearter, eller fasilitere typiske generalister som rødrev ... -
Population dynamics of grouse in the Nordic countries
(Doctoral thesis, 2018)Populasjonsdynamikk bestemmes av både romslige og tidsmessige forandringer av antall individer. Disse dimensjonene er avhengig av hverandre. Innvandring, utvandring, og overlevelse er tre av de fire demografiske komponenter ... -
Predatory behaviour of wolves in Scandinavia
(Doctoral thesis; Peer reviewed, 2014)The study of predatory behaviour is essential for understanding the interactions that may affect the behaviour and population dynamics of the species involved and consequent cascading ecosystem effects. In the case of large ... -
Seasonal- and phase-dependent effects on vole population dynamics
(Doctoral thesis, 2018)Populasjonssykluser hos smågnagere er en viktig komponent i det boreale barskogsøkosystemet på de nordlige breddegrader. Mange hypoteser har blitt beskrevet for å forsøke å forklare disse sykliske svingningene, men predasjon, ... -
Short- and long-term physiological effects of capture and handling on free-ranging brown bears (Ursus arctos)
(Doctoral thesis, 2017)Brown bears (Ursus arctos) are captured and handled for conservation, research or management purposes. However, capture and handling have potential to cause injury and stress, thus, negatively impacting an animal’s health. ... -
The role of nest predation and nest predators in population declines of capercaillie and black grouse
(Doctoral thesis, 2017)I det sammenhengende Fennoskandiske barskogbeltet har storfugl- (Tetrao urogallus) og orrfuglbestandene (Lyrurus tetrix) gått ned over tid, og toppene i de sykliske svingningene har blitt mer uregelmessige og lavere. At ... -
The Vertebrate Scavenger Community Along a Boreal Forest-Alpine Gradient: The Importance of Ungulate Management, Small Rodent Cycles and Winter Climate
(Ph.d-avhandlinger i anvendt økologi og bioteknologi; 2, Doctoral thesis, 2020)While the importance of carrion and scavenging is increasingly acknowledged, there are relatively few empirical studies of the scavenging community in Fennoscandia. There is limited knowledge on how habitat and potentially ...