Browsing Institutt for biologi by Title
Now showing items 1117-1136 of 2612
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Habitat area and local habitat conditions outweigh fragmentation effects on insect communities in vineyards
(Peer reviewed; Journal article, 2023)Fragmentation of habitat, for example by intensive agricultural practices, can be detrimental to local biodiversity. However, it often remains unclear whether such biodiversity declines are caused by loss of habitat area ... -
Habitat characteristics and small-scale variation in life history traits of a large herbivore
(Master thesis, 2018)Identification of habitat characteristics shaping small-scale variation in life history traits is important for our understanding of the magnitude of small-scale resource utilisation for different life history traits. Based ... -
Habitat fragmentation amplifies threats from habitat loss to mammal diversity across the world’s terrestrial ecoregions
(Peer reviewed; Journal article, 2021)Global biodiversity is increasingly threatened by anthropogenic environmental change. While there is mounting evidence that habitat loss is a key threat to biodiversity, global assessments typically ignore additional threats ... -
Habitat quality is more important than matrix quality for bird communities in protected areas
(Journal article; Peer reviewed, 2018)Protected areas are meant to preserve native local communities within their boundaries, but they are not independent from their surroundings. Impoverished habitat quality in the matrix might influence the species composition ... -
Habitat use and depth preferences of sea trout (Salmo trutta) in a Norwegian estuary
(Master thesis, 2020)Brunørreten (Salmo trutta) er en ferskvannsfisk som lever i bekker, elver, innsjøer og marine kystområder. Anadrome individer, ofte kalt sjøørret, har stor variasjon i migrasjonsstrategi og habitatbruk. De fleste større ... -
Habitat use in an estuary - a comparative study of Atlantic salmon (Salmo salar) and sea trout (Salmo trutta) of two life stages
(Master thesis, 2022)Detaljer om hvordan atlantisk laks (Salmo salar) og sjøørret (Salmo trutta) utnytter elvemunningsområder blir stadig mer relevante i tråd med økosystembasert forvaltning. Til tross for åpenbare forskjeller i habitatbruk ... -
Habitat use of sea trout (Salmo trutta) veteran migrants from three different rivers in a common sea loch
(Master thesis, 2024)Anadrom ørret foretar fôringsvandringer til marine habitater for å forbedre sine vekstmuligheter. Estuarier, fjorder og kystområder er viktige fôringsområder for migrerende ørret, men områder som også i stor grad anvendes ... -
Habitat use of sea trout (Salmo trutta) veterans in two Norwegian estuaries
(Master thesis, 2022)Elvemunningar er eit viktig habitat for sjøaure (Salmot trutta) til alle årstider, og kan brukast gjennom vinterhalvåret som ein alternativ strategi til den meir vanlege overvintringa i ferskvatn. I denne studien blei ... -
Habitatkrav og habitattilgjengelighet for småblank: (Salmo salar), relikt laks i øvre Namsen
(Master thesis, 2010)Den relikte laksen i øvre Namsen, småblank (Salmo salar), er vurdert som kritisk truet i den norske rødlista. Småblank gjennomfører hele livssyklusen i elva uten å vandre ut til havet, noe som gjør den unik i europeisk ... -
Habituation and conditioning in gilthead sea bream (Sparus aurata): Effects of aversive stimuli, reward and social hierarchies
(Journal article; Peer reviewed, 2017)To tailor the farming environment to a fish species, we should understand the species-specific responses to stimuli, including the degree of adaption and learning. Groups of gilthead sea bream were given a delay Pavlovian ... -
Habituation to humans in a predator-free wild ungulate
(Journal article; Peer reviewed, 2014)Arctic caribou and reindeer face an increase in human activity, tourism and infrastructure, which impact may depend on the potential for habituation. Habituation to nonlethal human disturbance in wild animals depends on ... -
Hair mineral levels as indicator of wildlife demographics?—a pilot study of muskoxen
(Peer reviewed; Journal article, 2022)The tight linkage between mineral status and health and demographics in animals is well documented. Mineral deficiencies have been coupled to population declines in wildlife. Current practices typically rely on liver, ... -
Halogenated boroxine increases propensity to apoptosis in leukemia (UT‐7) but not non‐tumor cells in vitro
(Peer reviewed; Journal article, 2022)A hallmark of the development of solid and hematological malignancies is the dysregulation of apoptosis, which leads to an imbalance between cell proliferation, cell survival and death. Halogenated boroxine [K2(B3O3F4OH)] ... -
Handbook for the measurement of macrofungal functional traits: A start with basidiomycete wood fungi
(Journal article; Peer reviewed, 2018)Functional traits are widely recognized as a useful framework for testing mechanisms underlying species community assemblage patterns and ecosystem processes. Functional trait studies in the plant and animal literature ... -
Harvest-induced phenotypic selection in an island population of moose, Alces alces
(Journal article; Peer reviewed, 2016)Empirical evidence strongly indicates that human exploitation has frequently led to rapid evolutionary changes in wild populations, yet the mechanisms involved are often poorly understood. Here, we applied a recently ... -
Harvesting can stabilise population fluctuations and buffer the impacts of extreme climatic events
(Peer reviewed; Journal article, 2022)Harvesting can magnify the destabilising effects of environmental perturbations on population dynamics and, thereby, increase extinction risk. However, population-dynamic theory predicts that impacts of harvesting depend ... -
Hawk models, hawk mimics, and antipredator behavior of prey
(Journal article; Peer reviewed, 2015)Prey typically respond to potential predators by taking flight. This results in an optimal flight initiation distance (FID) at which the risk of remaining and the cost of flight are equal. Thus, FID is strongly negatively ... -
Head in the clouds, feet on the ground: how transdisciplinary learning can foster transformative change—insights from a summer school
(Peer reviewed; Journal article, 2023)There is a pressing need for transformative change, with a vision of long-term human well-being within planetary boundaries. The lack of progress—despite increasing awareness and action—illustrates how challenging it is ... -
Heading for the hills: Risk avoidance drives den site selection in African wild dogs
(Journal article; Peer reviewed, 2014)Compared to their main competitors, African wild dogs (Lycaon pictus) have inferior competitive abilities and interspecific competition is a serious fitness-limiting factor. Lions (Panthera leo) are the dominant large ... -
Heart rate and swimming activity as indicators of post-surgical recovery time of Atlantic salmon (Salmo salar)
(Peer reviewed; Journal article, 2021)Background Fish telemetry using electronic transmitter or data storage tags has become a common method for studying free-swimming fish both in the wild and in aquaculture. However, fish used in telemetry studies must be ...