The once pristine Arctic is now facing negative alterations with a rapidly changing climate, increasing human activity, and plastic pollution. Seabirds are intrinsic to the marine ecosystems, and in recent years, plastic ingestion by seabirds has been of increasing concern because of the potential negative impact on individual and population levels. The aim of this study was to investigate the plastic ...

Timing is everything for Arctic flowering plants. Early flowers might be destroyed by frost, while late flowers have less time and resources to mature fruit. With climate change, Arctic flowering phenology is shifting. Yet for many species, phenology studies only encompass the onset of flowering and lack baseline data on within-plant flowering times. I used the gynodioecious cushion plant Silene ...

Fisk og annen sjømat inneholder sunt fett, viktige vitaminer og mineraler, og er i tillegg en god kilde til protein. Hovedgrunnen til anbefalinger om å spise fisk og annen sjømat er det naturlig høye innholdet av de langkjedede omega-3 fettsyrene eikosapentaensyre (EPA) og dokosaheksensyre (DHA). Norsk oppdrettsnæring har siden oppstarten på 1970-tallet vokst til å bli en av landets viktigste næringer, ...

Hensikten med denne oppgaven var å lage og evaluere et system for å isolere og identifisere proteaser som er involvert i å modne marine antimikrobielle peptider (AMPer). Bioaktive substanser fra marine organismer er lovende for utvikling av terapeutiske midler. Siden marine organismer lever tett på mengder av patogene mikroorganismer, har de utviklet et robust og effektivt immunsystem, der iblant ...

<p>To mitigate climate change and ecological degradation, societies must change how they produce and consume food. In 2013, the Food and Agriculture Organization of the United Nations (FAO) highlighted the need to use alternative food sources to reach a more sustainable food system. In this context, seaweed has excellent potential as its production does not need fertilizers and does not engender ...

Lingonberries (Vaccinium vitis-idaea L.) from two locations, northern (69◦N, 18◦E) and southern (59◦N, 10◦E) Norway, were grown under controlled conditions in a phytotron at two temperatures (9 and 15 ◦C) to study the effects of the ripening temperature and origin on the chemical composition of the berries. The concentrations of phenolic compounds, sugars, and organic acids as well as the profile ...

Atlantic salmon Salmo salar are experiencing widespread population declines, and reductions in growth and survival in the marine environment are contributing factors. Our aims were to estimate marine food consumption of adult salmon and to determine how energetics would be directly afected by the increased ocean temperatures associated with climate change. We tagged previous spawners on outward ...

This thesis describes the seasonality of the mesozooplankton community in Ramfjord, a shallow high-latitude fjord, in terms of diversity and behavior, using a combination of new and traditional methods. The approach aimed to gain insight into how environmental drivers such as photoperiod and food availability shape seasonal changes in mesozooplankton community structure and <i>Calanus</i> spp. ...

A new species of megasnail, Megalobulimus diluvianus sp. nov., is herein described based on subfossil material from limestone caves in the area of Lagoa Santa, Minas Gerais state, southeastern Brazil. The specimens come from a context of archaeological strata of early Holocene age. Considering the morphological features of the shell, the new species seems closely allied to the so-called ...

Gastropod samples were collected during expeditions to caves in Bahia state, northeastern Brazil, and are studied herein. Collection took place over the past five years, and gastropods were found in 14 caves distributed across six different municipalities: Campo Formoso, Carinhanha, Coribe, Feira da Mata, Central, and Ituaçu. A total of 19 species-level taxa of terrestrial and freshwater gastropods ...