Browsing Institutt for biologi by Title
Now showing items 1363-1382 of 2519
-
Light regulation of LHCX genes in the benthic diatom Seminavis robusta
(Peer reviewed; Journal article, 2020)Intertidal benthic diatoms experience a highly variable light regime, which especially challenges these organisms to cope with excess light energy during low tide. Non-photochemical quenching of chlorophyll fluorescence ... -
Light response and acclimation of microalgae in a changing Arctic
(Doctoral theses at NTNU;2018:270, Doctoral thesis, 2018)Summary of thesis: This thesis investigates ice-associated and under-ice algal communities, and the controlling role of light in the Arctic pack ice region. Changes in the light regime are a consequence of the substantial ... -
Light responses in the marine diatom Phaeodactylum tricornutum
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:378, Doctoral thesis, 2013)Marine diatoms fix more CO2 than all rainforest and have a fundamental role for production in the oceans and global climate. Almost all life on Earth somehow depends on photosynthesis fuelled by light energy from the sun. ... -
Limited decadal growth of mountain birch saplings has minor impact on surrounding tundra vegetation
(Peer reviewed; Journal article, 2022)Temperatures over the Arctic region are increasing at three times the rate of the global average. Consequently, Arctic vegetation is changing and trees are encroaching into the tundra. In this study, we examine the ... -
Linking variation in personality and behavioural syndromes to social foraging and producer-scrounger effects in house sparrows (Passer domesticus)
(Master thesis, 2016)Consistent behavioural differences between individuals across time and situations are referred to as animal personality. Associated with this are behavioural syndromes , which are suites of correlated behaviours across ... -
Lion and spotted hyena distributions within a buffer area of the Serengeti-Mara ecosystem
(Peer reviewed; Journal article, 2021)Most large carnivore populations are declining due to anthropogenic activities including direct persecution, prey depletion, habitat loss and degradation. protected areas (PAs) can help maintain viable large carnivore ... -
Lipid and Astaxanthin Contents and Biochemical Post-Harvest Stability in Calanus finmarchicus
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:148, Doctoral thesis, 2012) -
Lipid Composition in Antarctic krill, Euphausia superba
(Master thesis, 2011)Small variations in the lipid composition was found in Antarctic krill ranging from 3.0-5.5 cm. No differences were founf in lipid composition between malea and female Antarctic krill. There were some differences in lipid ... -
Lipid metabolism and diapause timing in Calanus copepods: The impact of predation risk, food availability and oil exposure
(Doctoral theses at NTNU;2021:355, Doctoral thesis, 2021)Calanoid copepods of the Calanus genus have an important ecological role as energetic links between primary producers and higher trophic level species in the North Atlantic and Arctic Oceans. Most individuals spend a large ... -
Lipid metabolism in Calanus finmarchicus is sensitive to variations in predation risk and food availability
(Peer reviewed; Journal article, 2020)Late developmental stages of the marine copepods in the genus Calanus can spend extended periods in a dormant stage (diapause) that is preceded by the accumulation of large lipid stores. We assessed how lipid metabolism ... -
Lipids and fatty acids development in lumpfish (Cyclopterus lumpus) larvae fed with different start feeding diets (Artemia, cirripedia, copepod (Acartia tonsa) and formulated diet
(Master thesis, 2022)Salmon lice (Lepeophtheirus salmonis) infestations on Salmonids (Salmo salar) in cages has brought Norwegian aquaculture to a stable production since 2012. Many chemotherapeutic , chemical, and mechanical approaches have ... -
Litter type and termites regulate root decomposition across contrasting savanna land-uses
(Journal article; Peer reviewed, 2018)Decomposition is a vital ecosystem process, increasingly modified by human activity. Theoretical frameworks and empirical studies that aim to understand the interplay between human land-use, macro-fauna and decomposition ... -
Liverworts from the largest of the United States: a checklist for Alaska
(Journal article, 2015)We report 294 liverwort taxa in 267 species for the State of Alaska, excluding the Aleutian Islands,15 taxa are listed as doubtful and an additional 17 of the previous reports are rejected as erroneous. The checklist is ... -
A living tool for the continued exploration of microplastic toxicity
(Peer reviewed; Journal article, 2022) -
Local Ecological Knowledge for Improved Biodiversity Conservation at Indawgyi Wildlife Sanctuary, Myanmar
(Master thesis, 2020)Bevaring av biologisk mangfold i Myanmar står overfor store utfordringer. Det kontinuerlige økonomiske presset for å utnytte landets naturressurser truer de naturlige økosystemer. Verneområder har blitt etablert de to siste ... -
Local People Knowledge on Bushmeat Hunting in the Serengeti Ecosystem: A Case Study of Topi (Damaliscus lunatus)
(Master thesis, 2017)Illegal harvesting is considered the most significant threat to biodiversity in conservation in Africa. The Serengeti National Park (SENAPA), Tanzania, is facing a similar problem since its establishment in the 1950s. ... -
Local variations in species composition on Laminaria hyperborea stipes as response of degree of exposure and impact by aquaculture
(Master thesis, 2018)Laminaria hyperborea kelp forest is a vitally important habitat that provides feeding ground, hiding space and habitat for numerous other species of both fauna and flora. Approximately 80 % of the total Norwegian algae ... -
Location is everything, but climate gets a share: analyzing small-scale environmental influences on breeding success in the white-throated dipper
(Peer reviewed; Journal article, 2020)Ecological and evolutionary effects of environmental variation on wild populations are of particular interest in a changing world. Large-scale environmental indices are classically used as environmental explanatory variables ... -
Location of studies and evidence of effects of herbivory on Arctic vegetation: a systematic map
(Peer reviewed; Journal article, 2021)Herbivores modify the structure and function of tundra ecosystems. Understanding their impacts is necessary to assess the responses of these ecosystems to ongoing environmental changes. However, the effects of herbivores ... -
Logical and experimental modeling of cytokine and eicosanoid signaling in psoriatic keratinocytes
(Peer reviewed; Journal article, 2021)Psoriasis is a chronic skin disease, in which immune cells and keratinocytes keep each other in a state of inflammation. It is believed that phospholipase A2 (PLA2)-dependent eicosanoid release plays a key role in this. ...