Browsing Ecology by Title
Now showing items 4-23 of 27
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Ecology of Alpine Lichen Heaths: Relationships Between Vegetation, Soil Temperature, and Edaphic Factors in Southern Norway
(Doctoral dissertations at the University of South-Eastern Norway;29, Doctoral thesis, 2019-03-01)Alpine lichen heaths are found on nutrient-poor and deep soils in the mountain plateaus in southern Norway. These are generally characterized by terricolous or so-called “mat-forming” lichens dominated by those in the ... -
The ecology of phytoplankton with focus on cyanobacteria and of aquatic macrophytes in selected lakes and reservoirs in Myanmar
(Doctoral dissertations at the University of South-Eastern Norway;153, Doctoral thesis, 2023-02-23)Myanmar’s freshwater systems are increasingly subjected to degradation, eutrophication, and anthropogenic impacts. The most visible effects of eutrophication in lakes and rivers are dense blooms of noxious, foul-smelling ... -
The effect of selected genetic variants, age, sex and training methods on physical activity, capability and trainability
(Doctoral thesis, 2021-02-12)The main objectives of this thesis were to investigate the role of selected genetic variants on physical activity (PA), capacity and trainability in homogenous cohorts from South-Eastern Norway. Two of the cohorts (Papers ... -
The effects of diet and metabolism on the life history of an omnivorous carnivore
(Doctoral dissertations at the University of South-Eastern Norway;209, Doctoral thesis, 2024-11-01)Many ecological principles are built on relationships which connect an organism’s diet, space-use, and fitness. However, actualizing these theoretical relationships into reality is complicated, because an organism’s fitness ... -
The effects of social, familial, and anthropogenic factors on dispersal-related space use and movement behavior in Scandinavian brown bear (Ursus arctos)
(Doctoral dissertations at the University of South-Eastern Norway;150, Doctoral thesis, 2023-01-19)Among mammals, dispersal is one of the most critical life phases whose outcomes have enormous consequences for survival and reproduction. However, there are several unknowns regarding dispersal and settlement decisions, ... -
Effects of training, age, gender and selected genes on aerobic endurance performance in cross-country skiing
(Doctoral dissertations at the University of South-Eastern Norway;91, Doctoral thesis, 2021-04-22)The main objective of this thesis was to investigate the effects of training, age, gender and selected genetic variants on aerobic endurance performance and training adaptations in well-trained cross-country skiers. The ... -
Impact of climate change and habitat degradation on two endangered reptiles: the Guatemalan beaded lizard and the Olive Ridley sea turtle
(Doctoral dissertations at the University of South-Eastern Norway;165, Doctoral thesis, 2023-06-15)Climate change and habitat degradation are the main threats to non-avian reptiles. Non-avian reptiles are a clade of ectothermic vertebrates that include turtles, alligators, lizards, amphisbaenians, and snakes. As ectotherms, ... -
Importance of air and soil temperatures for bioclimatic delimitations in Norwegian mountains
(Doctoral dissertations at the University of South-Eastern Norway;4, Doctoral thesis, 2018-06-18)Distribution limits of plants in relation to climatic variables have long interested ecologists. High latitudes and altitudes house distribution limits of forests, treelines, treeline ecotones and vascular plants in alpine ... -
Kontekst for læring. Nærmiljø som læringsarena i utdanning for bærekraftig utvikling
(Doktoravhandlinger ved Universitetet i Sørøst-Norge;23, Doctoral thesis, 2019-02-04)Verden i dag står overfor store miljømessige og sosiale utfordringer som får konsekvenser for framtidas samfunn, lokalt og globalt. Derfor vil det være av stor betydning å utdanne elever som både får nødvendige kompetanser ... -
Mercury in freshwater biota in southeastern Norway, with special emphasis on potential antagonistic effects of selenium on mercury bioaccumulation
(Doctoral dissertations at the University College of Southeast Norway;23, Doctoral thesis, 2017-10-06)Mercury (Hg), and in particular methylated Hg (methyl-Hg, MeHg), because of its high potential for bioaccumulation and biomagnification in aquatic food webs, generate health risks to both aquatic top predators and humans ... -
Mercury pollution in fish and invertebrates in natural and wildfire impacted lakes in Norway
(Doctoral dissertations at TUC;2014:8, Doctoral thesis; Peer reviewed, 2014-11-14)Mercury (Hg) contamination in fish has become a global issue and remains a major problem of concern in the Nordic countries, with atmospheric long-range transport of Hg being the main source to aquatic ecosystems. Most Hg ... -
The microbiology and geochemistry of a landfill-contaminated aquifer
(Doctoral dissertations at the University of South-Eastern Norway;107, Doctoral thesis, 2021-10-20)Thousands of aquifers worldwide have been polluted by landfill leachates and many more remain threatened. However, the ecology of these perturbed aquifers remained understudied. The current study incorporates aspects of ... -
Modelling and characterization of climate, environment, and human impact during the Holocene and Eemian using an Interactive Physical Downscaling
(Doctoral dissertations at the University of South-Eastern Norway;199, Doctoral thesis, 2024-06-26)The study of the past climate is important as it provides valuable information about how the earth’s climate has changed over long timescales and helps scientists to better understand natural climate processes and distinguish ... -
Natural and human-induced impacts on the genetic structure of Eurasian reindeer
(Doctoral dissertations at the University College of Southeast Norway;11, Doctoral thesis, 2017-03-17)Geografisk variasjon hos arter og populasjoner er basert på genetisk variasjon, som videre er grunnleggende for naturstyrt evolusjon. Genetisk variasjon og struktur er styrt av faktorer som mutasjoner, seleksjon og genetisk ... -
Naturen som arena for utforsking og læring av naturfaglege tema i barnehagen og i barneskulen
(Doctoral thesis, 2021-05-15)Barn lærer best når læringa tek utgangspunkt i noko barna sjølve er interesserte eller engasjerte i, og når dei får ta aktivt del i eigen læringsprosess. Naturen er ein arena som synest å stimulerer barn si nysgjerrigheit ... -
Observing animal behaviour and movement patterns remotely: A case study using bio-logging technology on free-ranging Eurasian beavers (Castor fiber)
(Doctoral dissertations at the University College of Southeast Norway;10, Doctoral thesis, 2017-02-24)Understanding animal behaviour is a fundamental part of biology and has been revolutionized by the invention of bio-logging units, which can be used to study wild animals in their natural habitats. In this thesis, tri-axial ... -
Pancreatic and periampullary carcinoma. Proteomics and metabolite profiles
(Doctoral dissertations at the University of South-Eastern Norway;216, Doctoral thesis, 2024-12-17)Adenokarsinom med utgangspunkt i det periampullære området har fellesbetegnelsen periampullært karsinom og inkluderer pankreatisk duktalt adenokarsinom (PDAC), ampullært karsinom, duodenalt adenokarsinom og distalt ... -
Spatio-temporal foraging behavior, habitat selection and impacts of bio-logging on Eurasian beavers, Castor fiber
(Doctoral dissertations at the University of South-Eastern Norway;126, Doctoral thesis, 2022-06-28)Wild animals deal with a dynamic landscape consisting of both food resources and threats that vary across space and time. This thesis investigated spatio-temporal foraging behavior and habitat selection of Eurasian beavers ... -
Territorial movement behaviour in the Eurasian beaver
(Doctoral dissertations at the University of South-Eastern Norway;162, Doctoral thesis, 2023-06-09)It can be challenging to observe and quantify natural behaviour in wild free-ranging animals. Species that are reclusive or exploit multiple environments, such as semi-aquatic mammals, may be particularly difficult to ... -
Territoriality and life history strategies of the Eurasian beaver
(Doctoral dissertations at the University College of Southeast Norway;24, Doctoral thesis, 2017-09-29)We studied life history strategies in the Eurasian beaver (Castor fiber), a territorial, monogamous, long-lived mammal, to increase our understanding of the mechanisms and trade-offs affecting the onset of natal dispersal, ...