Fjords in the Arctic are changing rapidly due to multiple factors including increasing air temperatures, the influx of Atlantic Water (Atlantification), sea-ice loss, retreat of tidewater glaciers, increased freshwater discharges, pollution and tourism. Understanding how these changes affect ecosystem processes and functions and, thus, services to society is critical. Net Ecosystem Metabolism (NEM) ...

The Multidisciplinary Observatory for Study of the Arctic Climate (MOSAiC) expedition consisted of a year-long drifting survey of the Central Arctic Ocean. The ecosystems component of MOSAiC included the sampling of molecular data, with metagenomes collected from a diverse range of environments. The generation of metagenome-assembled-genomes (MAGs) from metagenomes are a starting point for genome-resolved ...

The cumulative risk of climate change, pollution and other anthropogenic stressors challenges the sustainable management of freshwater ecosystems. Rapid warming at high latitudes is of concern due to the climate-driven amplification of risk mediated by interactions between the climate change and human activities. Here I address the cumulative risk in the subarctic Pasvik riverine system exposed to ...

Phytoplankton are an important part of marine food webs. They are subject to environmental factors such as light, temperature, salinity, nutrient concentrations, and stratification, all of which are rapidly changing with the warming climate. In the Arctic, both abiotic environment and phytoplankton community composition show strong seasonal trends. There has been a high interest in understanding ...

Northern fulmars (Fulmarus glacialis) are pelagic seabirds prone to ingest plastics. Upon ingestion, plastic particles can have both physical and chemical impacts, although these effects are poorly understood. This study investigated the occurrence of plastic-related chemicals (PRCs) in relation to the type of plastic polymers ingested, as well as their potential endocrine disrupting effects on ...

Plants growing at high latitudes are subjected to environmental conditions with significantly different light and temperature regimes compared to lower latitudes, which can influence local adaptations related to the plant’s secondary metabolite profile. Several studies have demonstrated the potential of utilizing hyperspectral imaging in plant phenotyping. This thesis provides insight into how plant ...

Denne masteroppgaven undersøker hvordan en karakterfri termin i naturfag påvirker elevers opplevelser og holdninger til vurdering. Hovedsakelig er oppgaven en komparativ studie mellom elever på to videregående skoler. For å samle inn data utviklet jeg et omfattende spørreskjema med spørsmål tilknyttet karakterfri vurdering. Spørreskjema gikk gjennom runder med redigering, og pilotundersøkelser med ...

Climate change driven loss of biodiversity is occurring at an unprecedented rate, especially in vulnerable high-latitude freshwater systems. Despite the increasing recognition of parasites in ecosystems, there is a lack of long-term data on freshwater fish parasites, limiting our ability to understand changes in biodiversity of these important ecosystem players. This study investigates how freshwater ...

Blubber in marine mammals is a multifunctional tissue, serving critical roles in thermoregulation, energy storage, endocrine regulation, and hydrodynamics. By providing insulation against cold, acting as a dense energy reserve, secreting hormones such as leptin to regulate metabolism, and streamlining the body for efficient swimming, blubber supports survival in diverse and often extreme environments. ...

Abstract Purpose. The purpose of the study was to investigate factors predicting migration pattern in moose in Finnmark. Moose has earlier been most numerous in the central and southern part of Norway, but the moose population in Finnmark increased in the 1990’s, and has now reached a more stable state. This makes a study on how the moose behaves in a relatively new habitat of particular ...