Blar i Master’s theses (MINA) på emneord "VDP::Matematikk og Naturvitenskap: 400"
Viser treff 1-20 av 70
-
Activated and enriched “designer” biochar as sorbent in remediation of PFAS and metal contaminated soils
(Master thesis, 2019)Soil contamination has become a major environmental problem of global concern, and there is a need for effective remediation methods to counteract this problem. Immobilisation of contaminants in soil using the carbonaceous ... -
Akkumulering av metaller i en innsjø eksponert for avrenning fra høytrafikkert veg, landbruk, kommunalt avløpsnett og tette flater : vertikal fordeling av metaller i en sedimentsøyle fra Østensjøvannet, Ås kommune
(Master thesis, 2020)Avrenning fra vegnettet kan være en viktig kilde til diffus forurensning, og kan inneholde flere metaller fra ulike vegtrafikkrelaterte kilder. Metaller er av spesiell interesse i tilknytning til vegavrenning grunnet deres ... -
Behavioral responses to camera traps : a study on two large carnivores in Norway
(Master thesis, 2019)In ecology, camera trapping is commonly used as a non-invasive technique to collect ecological observation data and to monitor populations. The technique is used to address a variety of research questions worldwide. Despite ... -
Behavioral responses to olfactory attractants at camera traps : a study of three carnivores in a boreal ecosystem
(Master thesis, 2018)Camera trapping is an efficient and minimally invasive method for studying wildlife ecology and behavior. In camera trap studies, it is important to consider the detection probability to get reliable estimates of e.g. ... -
Betydningen av husdyr og beitemark for kulturlandskapsfugler i Norge
(Master thesis, 2019)Flere arter har blitt rødlista i de siste tiårene og fuglearter tilknyttet jordbrukets kulturlandskap ser ut til å være en av de mest utsatte fuglegruppene i Norge og i store deler av Europa. Endringer i driftsmetoder og ... -
Binding og risiko for utlekking av fosfor i jord med høyt fosfornivå
(Master thesis, 2020)Høye konsentrasjoner av fosfor i jord på jordbruksarealer har siden 1960-tallet vært knyttet til forurensningsproblematikk i vannforekomster. Målet med denne oppgaven er å undersøke prosesser og mekanismer i jord knyttet ... -
Biogass i Norge : barrierer og utfordringer
(Master thesis, 2020)Biogass er en type fornybar energi som får økende oppmerksomhet og som med fordel kan utnyttes bedre. Klimanytten av biogass avhenger blant annet av hvilke råstoff som er brukt i produksjonen, effektivitet og hva biogassen ... -
Bugårdsdammen in the perspective of alternative stable states
(Master thesis, 2019)The topic of this thesis is conditions of a shallow lake where extent of aquatic plants is considered problematic. The aim is to identify possible drivers for mass-development of broad-leaved pondweed in Bugårdsdammen. The ... -
Colonisation and growth of benthic algae in a recently deculverted urban stream
(Master thesis, 2017)Stream restoration by the process of deculverting is a comprehensive form of restoration which aims to improve morphological, chemical and ecological condition through the re-creation of a naturalized stream from a piped ... -
Coupling between nitrate input and phosphorus retention in lake sediments : a case study from Lake Årungen
(Master thesis, 2018)Cultural eutrophication represents one of the greatest threats to freshwater systems, with lowland streams and lakes being especially vulnerable in areas that receive an increased supply of nutrients from human activity. ... -
Depreciative tourist behaviour in a protected birdwatching site : a qualitative study of birdwatchers on Hornøya, Northern Norway
(Master thesis, 2019)Wildlife watching tourism is a growing industry and can become eco-friendly if sufficient conservation measures are actively included in the operative tourism strategies. Research on visitor behaviour is necessary to ... -
Development in phytoplankton assemblages, ecological status and purification effect in Teglverksdammen : a study of a pond the first two growth seasons following deculverting of an urban stream system in Oslo, Norway
(Master thesis, 2018)There is growing consensus that deculverting and restoration of buried urban streams may come with a range of ecological and socioeconomic benefits, including; reduced flood risks, improved water quality, facilitation of ... -
Diet, diel activity and prey handling in the tawny owl (Strix aluco)
(Master thesis, 2018)I recorded prey deliveries and prey handling using video monitoring at three tawny owl (Strix aluco) nests from late april to late may in 2017, in Akershus county in southeast Norway. I registered a total of 455 prey items, ... -
The effect of artificial light and latitude on foraging activity in resident passerines in Northern Europe
(Master thesis, 2020)Over the last couple of decades, there has been an increasing interest in the ecological consequences of artificial light on wildlife. At northern latitudes, winter is characterized by short days and low temperatures, ... -
Effect of farmland type and vegetation height on habitat use and breeding success of northern lapwings in south-east Norway
(Master thesis, 2020)Habitat use is a key element to understanding how endangered species should be protected from further decline. The northern lapwing (Vanellus vanellus) is a red-listed farmland species threatened by multiple factors such ... -
Effects of plastic additives on precision cut liver slices (PCLS) from Atlantic cod (Gadus morhua)
(Master thesis, 2019)A vast amount of the plastic we use end up in the ocean and estimates suggest a doubling of plastic in the ocean, to 250 million tonnes by 2025. Plastic contain additives such as phthalates, and these are known to have ... -
Effects of spatio-temporal weather conditions in autumn and winter on body mass and behaviour of the high Arctic Svalbard reindeer (Rangifer tarandus platyrhynchus)
(Master thesis, 2018)There exists large consensus within the research community that climatic changes have a world-wide impact on ecosystems, which is further expected to be most prominent in the Arctic. In these strongly seasonal environments, ... -
Effekt av tetthet i furu på veksten til gran i eldre tosjiktede blandingsbestand
(Master thesis, 2019)I dagens skogbruk er det lite fokus på tosjiktede blandingsbestand bestående av furu (Pinus sylvestris L.) i oversjiktet og naturlig forynget gran (Picea abies (L.) Karst) i undersjiktet. Disse blandingene kan levere ... -
Effekter av GPS-halsbånd på kroppsvekt og reproduksjon hos simler av svalbardrein (Rangifer tarandus platyrhynchus)
(Master thesis, 2019)De siste tiårene har forståelsen for hvordan dyrearter beveger seg i ulike miljø vært et sentralt forskningstema. Biotelemetri er et viktig verktøy for å få innsikt i arters habitatbruk og vandringsmønster, og bruk av ... -
Effekter av metyl-jasmonat på frøanatomi og terpenkonsentrasjoner i små granplanter
(Master thesis, 2019)Gransnutebillen (Hylobius abietis) er en stor skadegjører i plantefelt med gran (Picea abies), og i internasjonal sammenheng gjør den skade for millioner av euro hvert år. Samtidig har giftige insekticider, tidligere brukt ...