Blar i Faculty of Environmental Sciences and Natural Resource Management (MINA) på tittel
Viser treff 1477-1496 av 1596
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Ultraviolet radiation affects growth and photosynthesis in the old forest lichens Lobaria pulmonaria and L. virens
(Master thesis, 2016-08-31)Depletion of the ozone layer and human activities such as logging may increase ultraviolet (UV) radiation-exposure of forest lichen habitats. Previous studies show that some forest lichens are highly susceptible to high ... -
Ultraviolet radiation impact on lichen growth
(Master thesis, 2015-11-04)This study investigates relative growth rates and brown pigments synthesis under the influence of UV-B radiation in short term growth chamber experiments. One chlorolichen, Cetraria islandica, and the two cephalolichens ... -
Ulv i Danmark - konflikter og muligheder for turismeforvaltningen : resultater af et litteraturstudie og en eksperimenterende kvantitativ spørgeundersøgelse
(Master thesis, 2016-09-02)I 2012 fandt man for første gang i over 200 år beviser på, at ulven igen var på vej tilbage til de danske landskaber. Beviserne bestod af kadaveret af en ulv, som blev fundet i Hanstholm klitplantage, der er en del af ... -
Understanding the structure-function relationship of honey bee Vitellogenin
(PhD Thesis;2022:8, Doctoral thesis, 2022)This thesis focuses on the structure and molecular function of Vitellogenin (Vg) from honey bees (Apis mellifera). Vg is an ancient protein found in animals. Most biological processes depend on proteins' activities, and ... -
Undersøkelse av effekter av forsuring på fiskepopulasjoner i tre skogsvann i Degernesfjella
(Master thesis, 2021)Den alvorligste effekten av forsuring av innsjøer i Skandinavia er tilbakegangen, eller elimineringen av naturlige fiskepopulasjoner. Mye av litteraturen handler om effektene av forsuring på laksefisk. Det er også gjort ... -
Undersøkelse av forurensing og spredning av miljø- og helsefarlige stoffer langs høytrafikkert vei
(Master thesis, 2018)I forbindelse med prosjektet E18 Retvet-Vinterbro ble jordprøver fra Holstad, Nygård og Vinterbro analysert for å undersøke forurensning og spredning av helse- og miljøfarlige stoffer i avstand fra vei, prøvedybde og ... -
Undersøkelse av sammenhengen mellom løsmassetyper, markfuktighet og skogsbilvegers bæreevne
(Master thesis, 2017)Skogsbilvegnettet i Norge er under stadig større belastning, industrien krever tømmer hele året.. Klimaet er i endring og kjøretøyene blir større og tyngre. Dette fører til et stort behov for opprusting på et skogsbilvegnett ... -
Upstream lakes as sinks or sources of particles and nutrients - impact on phytoplankton growth in downstream recipinents : a case study from the Årungen water course
(Master thesis, 2014-09-24)Two lakes situated in the same catchment in SE Norway were studied during the growing season of 2013. Lake Østensjøvannet is a small and shallow lake situated upstream from a larger and deeper recipient, Lake Årungen. The ... -
Uptake of uranium in Atlantic salmon (Salmo salar) : aqueous exposure
(Master thesis, 2020)The MSc. thesis assess the ecotoxic effects of uranium in freshwater ecosystems, by analysing the possible uptake-routes of U in fish using juvenile Atlantic salmon (Salmo salar) as a model organism. Bioconcentration factor ... -
Uranium and toxic metal uptake by the earthworm Eisenia hortensis in contaminated soils
(Master thesis, 2017)Earthworms are present in nearly every terrestrial ecosystem worldwide and play an important role in the transport and availability of nutrients and other elements in soil. Even more ubiquitous than earthworms are naturally ... -
Uranium speciation, bioavailability and uptake in atlantic salmon (Salmo salar L.) parr and the influence of pH
(Master thesis, 2015-08-10)Many chemicals move readily in the environment and can be transported with surface water runoff to a nearby stream or lake. So, risk assessments need to be mindful of environmental movement of chemicals and the fact that ... -
Urban wind energy : the effect of obstacles and buildings
(Master thesis, 2019)Denne masteroppgaven er utført ved Norges miljø- og biovitenskapelige universitet på Ås som en del av mastergraden i fornybar energi. I de senere år har man sett en økende interesse i å produsere energien der man trenger ... -
Use of remote sensing for mapping of non-native conifer species
(MINA fagrapport;33, Report, 2016)Non-native species are by many considered a threat to local biodiversity. In Norway, conifer species have been introduced in order to find species with better timber production than the native species. Several of these ... -
Use of sodium silicate to reduce the bioavailability and thereby toxicity of copper in run-off from Nordgruvefeltet mining area at Røros
(Master thesis, 2015-01-27)Metal run-off from derelict mining sites poses serious environmental concerns. Discharge water is usually enriched with a series of heavy metals such as aluminum (Al), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), ... -
Use of sound stimuli to elicit a change in moose (Alces alces) and red deer (Cervus elaphus) behaviour
(Master thesis, 2021)Over the years, a lot of different actions have been tested in order to prevent road and railway collisions with cervids. Amongst them, actions aiming to change animal behaviour. The aim of such actions has been to elicit ... -
Use of time-lapse cameras to monitor beetle activity on fruiting bodies of Fomitopsis pinicola
(Master thesis, 2020)Insects and fungi are the major contributors to forest biodiversity. It is apparent that insects have an ecologically important effect on fungal communities in dead wood systems. Beetles frequently visit the fruiting bodies ... -
Using artificial nests as a measure of predator abundance and predator composition: A comparative study between two contrasting forest areas
(Master thesis, 2011-10-07)We used artificial nests to measure predator abundance and predator composition between Varaldskogen in southeastern Norway and two areas in Pinega in northwestern Russia. Varaldskogen is heavily influenced by commercial ... -
Using multi-temporal airborne laser scanner data for predicting change in above ground biomass components in a boreal forest
(Master thesis, 2012-09-20)Boreal forests are the main carbon sink in terrestrial ecosystems, and it account for about 90 % of the annual carbon flux between the atmosphere and the land surface. The amount of carbon that could be stored in the forest ... -
Using Variation in Antler Growth to Identify Short- and Long-Term Energy Allocation Trade-Offs in Female Svalbard Reindeer (Rangifer tarandus platyrhynchus)
(Master thesis, 2017)In environments where resources are limited, trade-offs are made to allocate resources optimally between growth, maintenance, storage and reproduction. Trade-offs can manifest themselves as both short-term processes and ... -
Utbredelse og habitatvalg hos piggsvin (Erinaceus europaeus) i Ås kommune : hva påvirker forekomsten av piggsvin ved bebyggelse?
(Master thesis, 2016-08-31)Piggsvin (Erinaceus europaeus) er et lite nattaktivt pattedyr som trives i kulturlandskap, og i urbane og landlige områder. Det kan leve nær mennesker og blir ofte sett i hager og parker i byer og tettsteder. I tettsteder ...