Browsing Faculty of Environmental Sciences and Natural Resource Management (MINA) by Title
Now showing items 1194-1213 of 1599
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Resistance mechanisms towards the ectoparasitic mite Varroa destructor in two naturally-surviving honey bee populations (Apis mellifera) from Scandinavia
(Master thesis, 2018)The invasion of the ectoparasitic mite Varroa destructor has caused massive problems for the apicultural industry in Europe and North America. The varroa mite has also contributed to the extinction of most wild and feral ... -
Responses in fish and macroinvertebrates to channelization and restoration in two Arctic rivers
(Master thesis, 2018)The two rivers Salangselva and Kvernmoelva in Troms county, were both channelized and erosion secured during the 1980s. This stimulated agricultural activity in adjacent properties in the following years. In parallel, a ... -
Ressursoversikt og potensial for virkeproduksjon på Norges landbrukshøgskoles skogeiendom
(MINA fagrapport;1, Report, 2004)Høyskoleskogen har eksistert som forvaltningsenhet siden 1859 og høyskoleskogen av i dag er et resultat av langsiktig innsats i skogskjøtsel. Produktivt skogareal har på grunn av omdisponering og tilkjøp av areal økt fra ... -
Ressursoversikt og virkeproduksjon på Norges miljø- og biovitenskapelige universitets skogeiendom
(MINA fagrapport;46, Report, 2017)Universitetsskogen har eksistert som forvaltningsenhet siden 1859 og er et resultat av langsiktig innsats i skogskjøtsel. Produktivt skogareal har på grunn av omdisponering og tilkjøp av areal økt fra 1061 dekar i 1938 til ... -
Restaureringssuksess av sidebekker til Verdalselva, klassifisering av økologisk tilstand med bunndyr som kvalitetselement og forventningsverdier til ungfisktetthet av laksefisk
(Master thesis, 2016-08-31)Sjøørretpopulasjonene (Salmo trutta) har mange steder i landet blitt reduserte. Det er trolig sammensatte årsaker til dette, men habitatforringelser i gyte- og oppvekstområdene, i all hovedsak mindre elver og bekker ... -
Resting-site selection of American sink (Mustela vison) in the archipelago of Southern Norway
(Master thesis, 2015-02-26)The American mink (Mustela vison) was introduced to European countries in the 1920’s, from individuals escaping from fur farms. In Norway, minks are now common throughout the country. This invasive species can cause habitat ... -
Restoration of peatland by natural revegetation from indigenous soils along E10 Lofast II, Northern Norway
(Master thesis, 2015-07-31)Human degradation of peatlands causes large carbon emissions, loss of biodiversity and reductions in ecosystem services. Ecological restoration is one of the practices trying to mitigate the damages through assisting the ... -
Revurdering av beskyttelsessoner rundt Elverum vannverk
(Master thesis, 2019)Elverum vannverk ble startet opp på 80-tallet og pumper i dag opp ca. 6000 m3 vann per døgn. Rundt vannverket ligger det fire beskyttelsessoner som har til hensikt å verne om drikkevannskilden. Soneinndelingen følger ... -
Rewetting of drained ombrotrophic bogs in Norway : short-term effects on vegetation
(Master thesis, 2021)The restoration of degraded mires is considered an important part of mitigating climate change and biodiversity loss. Mires are wetland ecosystems where organic matter is submerged and preserved as peat layers. Bogs are ... -
Riggetidsmodell for T-winch drifter
(Master thesis, 2024)Sammendrag Gjenreisningen av norske skoger har ført til en tilvekst som har doblet seg de siste 100 årene, mens avvirkningen i forhold har vært stagnerende. En økende etterspørsel etter tømmer har ført til at det har blitt ... -
Risikofaktorer for tap av lam i Sør-Trøndelag : hvor viktig er kongeørn (Aquila chrysaetos)?
(Master thesis, 2016-09-02)Det er knyttet stor usikkerhet til hvor stor del av tapet av lam som er forårsaket av kongeørn (Aquila chrysaetos) i Sør-Trøndelag. Denne rapporten tar for seg resultatene fra en undersøkelse med radiomerkede lam, utført ... -
Risk of lynx (Lynx lynx) predation in roe deer (Capreolus capreolus) depends on habitat structure
(Master thesis, 2012-09-14)Abstract Large carnivores are recolonizing Scandinavia with possible wide reaching consequences for prey populations and ecosystems. Impacts beyond numerical effects on prey populations such as behavioral effects are ... -
Risky berry business? : brown bear (Ursus arctos) foraging behaviour in a landscape of fear
(Master thesis, 2016-04-01)Mobile animals are expected to optimize their diet and foraging strategies, and balance the cost of resource gain with the perceived predation risk, and therefore trade-off risky areas for safer areas with fewer resources. ... -
River restoration and habitat improvements in the sub-arctic river Bognelva – effects on anadromous fish
(Master thesis, 2011-02-17)Alterations of watercourses in the form of channelization, dam building and digging of dikes has been ongoing for centuries. This has eliminated much of the vital natural variation found in rivers that is necessary for ... -
River restoration in Bognelv, Northern Norway : salmonid and macroinvertebrate responses to restoration measures
(Master thesis, 2016-08-11)This is the fourth study of the response of salmonids to river restoration in Bognelv in Finnmark County, Norway. Bognelv was channelized, erosion secured and flood protected during the late 1930s to early 1990s period, ... -
Road deicing salt and copper : transfer and effects on fertilization and early life history stages of Atlantic salmon (Salmo salar)
(PhD Thesis;2015:66, Doctoral thesis, 2017-07-12)Application of road deicing salt in the Nordic countries have increased considerably over the years, in order to enhance good friction and thereby increasing the traffic safety on icy roads during the winter period. The ... -
Road salt-induced lake stratification : effects on nutrient availability and consequences for the phytoplankton community in Lake Kutjern
(Master thesis, 2022)In Norway, the use of road salt for de-icing highways has increased by more than 200 percent in the last two decades. This is partly due to climate change and increased traffic volumes, and hence may continue to rise. Salt ... -
The role of biotic and abiotic factors on treeline ecotone dynamics : studies using field observations and remote sensing
(PhD Thesis;2022:35, Doctoral thesis, 2022)With global warming, the forest extent is expected to change, and the transition zone between the upper forest boundary and treeless alpine landscape (i.e., the treeline ecotone) is expected to migrate to higher elevations. ... -
The role of past landscape structure and present management in semi-natural grasslands for wild bee species richness and abundance
(Master thesis, 2020)1. During the last century the area of semi-natural grasslands has been dramatically reduced in all European countries, including Norway. Semi-natural grasslands provide habitats for wild pollinators such as wild bees and ... -
Rovdyrturismes potensiale som et konfliktdempende tiltak
(Master thesis, 2022)Denne oppgaven handler om hvilken effekt rovdyrturisme vil kunne ha på meninger om store rovdyr i Stor-Elvdal og Rendalen. For å kartlegge hvilken effekt det vil kunne ha er det tatt utgangspunkt i teoriene det kognitive ...