Browsing Faculty of Environmental Sciences and Natural Resource Management (MINA) by Title
Now showing items 308-327 of 1599
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Drivers for phytoplankton community dominance of nuisance microalga Gonyostomum semen (Ehrenberg) Diesing in two South-Eastern Norwegian lakes : a paleolimnological approach
(Master thesis, 2018)Gonyostomum semen (Ehr.) Diesing has during the last decades expanded its distribution and increasingly started to dominate phytoplankton communities in Northern Europe, and particularly in Scandinavia. Several studies ... -
Drivers of bat activity and habitat use in boreal forest
(PhD thesis;2024:29, Doctoral thesis, 2024)Bat species in Fennoscandia make up approximately 20% of the terrestrial mammal wildlife and are all reliant on forest habitats to some extent throughout their annual cycle. However, there is a lack of knowledge on ecological ... -
Drivers of the diversity and distribution of wild bees in a species poor region
(PhD Thesis;2016:23, Doctoral thesis, 2020-11-13)Bee diversity is declining globally. On a European scale, roughly 10% of the species are considered threatened, but the number may be even higher. The threatened status of bees depends on both the taxonomic and spatial ... -
Dry Calcareous Grasslands - Using Monitoring Methods to Detect Effects From Management Actions
(Master thesis, 2023)1. The grim fact is that biodiversity in ecosystems across the globe are rapidly declining due to anthropogenic activities. On the other hand, focus on actions that may halt this loss is on the rise. Ecological restoration ... -
Dung beetle (Scarabaeidae, Scarabaeinae) communities in mountain rain forests (Tanzania): A biodiversity survey from Amani Nature Reserve and Udzungwa Mountain National Park
(Master thesis, 2015-07-30)The African dung beetles (Scarabaeidae, Scarabeinae) is the most generic and species rich of the global faunas. Dung beetles are good indicators of biodiversity and habitat disturbances. This study aimed to investigate ... -
Dung beetles (Scarabaeidae. Scarabaeinae, Aphodiinae) of Selous Game Reserve, Tanzania
(Master thesis, 2016-09-13)Dung Beetles (Scarabaeinae, Scarabaeidae) are important participants in binding huge amounts of carbon. In Africa these Beetles have been specializing for millions of years, since there have been no “Ice-ages”. Today, much ... -
Ecolocical effects of acute oil spills
(Master thesis, 2011-04-28)The coastal ecosystems are under constant pressure from natural and anthropogenic sources. The interactions between organisms and their environment is a complex myriad of changes and responses making impacts from acute ... -
An ecological and socio-economical study of a locally endangered tree species, Olea europaea subsp. cuspidata, in a dry Afromontane forest
(PhD Thesis;2018:94, Doctoral thesis, 2018)Afromontane forests are found in the tropics and are often threatened because of land use changes. These forests have various types of multipurpose tree species that provide different services to the local communities. ... -
Ecological condition, alpha diversity, abundance and functional groups in macroinvertebrate communities of 15 tributaries in the Verdal watershed
(Master thesis, 2022)Streams and rivers are some of the most degraded and threatened ecosystems in a global perspective. There are several factors influencing declines in biodiversity globally, with the most driving agents being pollution, ... -
Ecological impacts of red deer browsing in boreal forest
(PhD Thesis;2018:66, Doctoral thesis, 2018)The populations of wild ungulates are increasing in the northern hemisphere, and in many areas, their populations have developed from critically low to historically high numbers within the last century. There are multiple ... -
Ecological implications of road construction in an alum shale bedrock area : a State highway (Rv4) case study
(Master thesis, 2016-08-31)The construction and use of roads and tunnels takes a toll on natural resources and especially the biological integrity of downstream freshwater environments. Consequently, aquatic biota is exposed to elevated levels of a ... -
Ecology, conservation and bioactivity of food and medicinal plants in East Africa
(PhD Thesis;2010:29, Doctoral thesis, 2010)In East Africa 70-80 % of the population is subsistence farmers. The rural health system is often poorly equipped both with personnel and medicines, and many depend on the use of medicinal plants for their primary health ... -
Economic analysis of carbon sequestration and storage in Tanzanian forests
(PhD Thesis;2015:81, Doctoral thesis, 2020-11-10)Tropical deforestation is among the principal causes of emissions of carbon dioxide (CO2). Nevertheless, tropical forests play an important role in regulating global climate by serving as carbon reservoirs. This has led ... -
Economic and environmental impacts of reprocessing household plastic waste at Øra, compared to transport and reprocessing in Germany
(Master thesis, 2018)Since the early 19-hundreds, plastics have been a valuable product for humans. Production has expanded throughout decades, leading to increased volumes of plastic waste. Insufficient treatment of plastic waste leads to ... -
Economic perspectives of market integration and demand flexibility within a smart grid dominated power sector
(PhD Thesis;2015:56, Doctoral thesis, 2020-11-19)The developments related to integration of renewable energy sources, smart grid and market liberalization make the transition of the power system to a new state inevitable. This PhD work aims to analyze some of the market ... -
Ecotoxicological effects of highway and tunnel wash water runoff
(PhD Thesis;2010:25, Doctoral thesis, 2010)In Norway, the traffic loadings have shown a substantial increase during the last decades. From 1948 to 2008 the transportation load has increased from 2.5 to 60.6 million passenger km. Hence, the ever increasing traffic ... -
Ectoparasite (Ceratophyllus vagabundus vagabundus) infestations reduce hatching success in precocial birds (Branta leucopsis) nesting in the High Arctic
(Master thesis, 2016-08-11)Arctic terrestrial ecosystems are ideal systems to study host-parasite interactions because they are sensitive and have fewer confounding interactions than lower latitudes. Since the Arctic is experiencing rapid climate ... -
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 autumn warming on the rate of senescence in Svalbard plants : an experimental approach with relevance for Svalbard reindeer
(Master thesis, 2022)Phenology is a biological trait sensitive to global warming. Climate change scenarios predict a three-fold increase in temperature and altered rainfall for polar regions. The Svalbard Archipelago, situated at 780 North, ... -
Effect of Conservation Agriculture and Biochar on Soil Hydraulic Properties in a Ugandan Plinthosol
(Master thesis, 2023)Conservation agriculture (CA) is regarded as a robust and resilient agricultural practice, able to meet the challenges related to climate change. Conservation farming in combination with biochar (BC) has gained increased ...