Browsing Institutt for biologi by Title
Now showing items 2428-2447 of 2615
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The socio-ecological impacts of the invasive house crow (Corvus splendes) in Tanzania
(Master thesis, 2023)Invasjonsarter er en av de største truslene for biologisk mangfold i naturen i dag. Lokal kunnskap og holdninger til invasjonsarter kan bidra til å forstå hvilken påvirkning de har på miljøet. Ved å avdekke allmennhetens ... -
The stress hormone corticosterone in a marine top predatorreflects short-term changes in food availability
(Journal article; Peer reviewed, 2015)In many seabird studies, single annual proxies of prey abundance have been used to explain variability in breeding performance, but much more important is probably the timing of prey availability relative to the breeding ... -
The stress of being contaminated? Adrenocortical function and reproduction in relation to persistent organic pollutants in female black legged kittiwakes
(Journal article; Peer reviewed, 2014)High levels of environmental pollutants such as persistent organic pollutants (POPs) including PCB and DDT have been found in the Arctic and many of those pollutants may impair reproduction through endocrine disruption. ... -
The Svalbard reindeer (Rangifer tarandusplatyrhynchus) and its food base: plant-herbivoreinteractions in a high-arcticecosystem
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:17, Doctoral thesis, 2008)One challenge in ecology is to predict long-term effects of high herbivore densities on the vegetation, and its feedback consequences. I examined plant-herbivore dynamics during a 26-year period following reintroduction ... -
The Tautra Cold-Water Coral Reef - Mapping and describing the biodiversity of a cold-water coral reef ecosystem in the Trondheimsfjord by use of multi-beam echo sounding and video mounted on a remotely operated vehicle
(Master thesis, 2016)The Tautra sill is one of three sill dividing Norway s third largest fjord, the Trondheimsfjord. Knowledge of cold-water corals in the fjord has been known for centuries and has been a popular object of interest in regards ... -
The usability of eDNA to identify and quantify zooplankton communities
(Master thesis, 2023)Havet vårt står midt i en trippel planetarisk krise. Klimaendringer, forurensning og tap av biologisk mangfold påvirker både habitater og de som bor der. Havovervåkingsprogrammer er viktige siden de gir data som kan bidra ... -
The use of light, restrictive feeding, fibrous feed and stocking density and the consequences for animal welfare for poultry species kept in Norway - Scientific Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food and Environment
(Peer reviewed; Journal article, 2022) -
The utilization of frass from the yellow mealworm (Tenebrio molitor) as a plant fertilizer and immune stimulant
(Master thesis, 2021)Produksjon av insekt er en hurtigvoksende industri verden over, siden insekter kan oppsirkulere matavfall til en bærekraftig proteinkilde som kan brukes både som menneskemat og som dyrefôr. Det mest omfangsrike biproduktet ... -
The β-oxidation pathway is downregulated during diapause termination in Calanus copepods
(Journal article; Peer reviewed, 2019)Calanus copepods are keystone species in marine ecosystems, mainly due to their high lipid content, which is a nutritious food source for e.g. juvenile fish. Accumulated lipids are catabolized to meet energy requirements ... -
Therapeutic effect of a Chlamydia pecorum recombinant major outer membrane protein vaccine on ocular disease in koalas (Phascolarctos cinereus)
(Journal article; Peer reviewed, 2019)Chlamydia pecorum is responsible for causing ocular infection and disease which can lead to blindness in koalas (Phascolarctos cinereus). Antibiotics are the current treatment for chlamydial infection and disease in koalas, ... -
There is more to climate than the North Atlantic Oscillation: a new perspective from climate dynamics to explain the variability in population growth rates of a long-lived seabird
(Journal article; Peer reviewed, 2015)Predicting the impact of global climat echange on the biosphere has become one of the most important efforts in ecology. Ecosystems worldwide are changing rapidly as a consequence of global warming, yet our understanding ... -
Thermal performance in zebrafish (Danio rerio) - Thermal acclimation capacity in wild and domesticated zebrafish
(Master thesis, 2018)In times of imminent threat of climate change, clear evidence of which physiological mechanisms are limiting thermal performance remains scarce. This thesis involved measuring different performances, over a wide range of ... -
Thermal physiology and activity in relation to reproductive status and sex in a free-ranging semelparous marsupial
(Journal article; Peer reviewed, 2019)In a changing climate, southern hemisphere mammals are predicted to face rising temperatures and aridity, resulting in food and water shortages, which may further challenge already constrained energetic demands. Especially ... -
Thermal preference in both temperature acclimated and thermal tolerance-selected zebrafish (Danio rerio)
(Master thesis, 2021)Det forventes at klimaendringer vil føre til en økning i plutselige varmeøkninger noe som gjør det viktig å ha evnen til å tilpasse seg det nye miljøet. Ektoterme arter sine fysiologiske funksjoner blir svært påvirket av ... -
Thermoregulatory Responses and Work Strain of Fishermen - A Field Study and a Laboratory Study
(Master thesis, 2015)Fishermen on board deep-sea trawlers in the Barents and Norwegian Sea are exposed to low air temperatures, strong winds, high humidity, rain, snow and work with varying intensities. No studies have investigated the effect ... -
Thermoregulatory responses and work strain of fishermen – a field study on board deep-sea fishing vessels
(Journal article; Peer reviewed, 2016)Background: Fishermen working on deep-sea vessels in the Barents and Norwegian Sea are exposed to low air temperatures, strong winds, high humidity, rain, snow and work at different intensities. Few studies have investigated ... -
Thyroid hormone disruptive effects of environmental contaminants in free-ranging brown trout (Salmo trutta) from lake Mjøsa, Norway
(Master thesis, 2011)VBrown trout (Salmo trutta) from Lake Mjøsa, Norway, contain very high levels of polybrominated diphenyl ethers (PBDEs), in addition to elevated levels of other persistent organic pollutants (POPs) and trace metals, including ... -
Thyroid hormone status and thyroid gland histology in PFAS- and mercury contaminated glaucous gulls (Larus hyperboreus) from Svalbard
(Master thesis, 2018)The glaucous gull (Larus hyperboreus) is a scavenger and top predator in the Arctic marine food web. Due to its high trophic position, it is highly exposed to organohalogenated compounds (OHCs) and metals originating from ... -
Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species
(Journal article; Peer reviewed, 2013)Thyroid hormones (TH) are known to stimulate in vitro oxygen consumption of tissues in mammals and birds. Hence, in many laboratory studies a positive relationship between TH concentrations and basal metabolic rate (BMR) ... -
Tilrettelegging for dyrking av butare i Trøndelag.
(Research report, 2014)Butare Alaria esculenta er en av de store tareartene som vokser langs Trøndelagskysten og som er attraktiv å begynne å dyrke med tanke på anvendelse til flere ulike produkter. Den vokser raskt, produserer mye biomasse og ...