The sea urchin, Strongylocentrotus droebachiensis, is a prominent grazer in coastal ecosystems with the ability to graze down large areas of kelp forests and turn them into marine deserts, or so called barren grounds. Kelp ...

In Antarctica, the failure to establish international agreement on regulations caused an overexploitation which reduced the number of blue whales from about 240 000 to less than 500. I have here taken a closer look at the ...

European lobsters (Homarus gammarus) have been overfished for decades as it is a highly valued species. Commercial catch per unit of effort (CPUE) in Skagerrak, Norway has decreased to historically low levels in the most ...

It is important both from a management and conservation point of view to uncover the potential of a species to cope with climate warming, and whether this potential differ among populations. In this thesis I used Atlantic ...

Sammendrag Kokkolitoforer, også kalt kalkflagellater, er en viktig gruppe marine planktonalger. Det som kjennetegner denne algegruppen er at de produserer skjell , kalt kokkolitter, på utsiden av cellen som er dannet av ...

Data from a monitored segment (about 20 vessels) of the fleet of about 6000 small vessels (less than 15 meters length overall) operating bottom-set gillnets for cod (Gadus morhua) and monkfish (Lophius piscatorius) in the ...

A description of the epidermal structure of minke and humpback whales in relation to their respective capabilities of retaining suction-cup tags.

Predator-prey interactions are prevalent in all natural ecosystems and are regarded as a fundamental force in ecological as well as in evolutionary processes. A series of studies have investigated predator-prey dynamics ...

Protists have representatives in all but one of the kingdoms in the tree of life and are highly important in the oceans, where they generate most of the carbon-flow in the first trophic levels. Parasitic lineages work as ...

A first survey of southern Norway to sample and examine Norwegian Kinorhyncha biodiversity. Also beginning to establish a sequence database for future use in Kinorhyncha barcoding.

Prymnesium polylepis er en svepeflagellat med to ulike morfologiske flagellatstadier som består av avvikende eller typiske celler. Kulturer med typiske celler er haploide, og kulturer med avvikende celler kan enten være ...

Blåkvalen (Balaenoptera musculus) er det største dyret som har levd på jorda, men i løpet av den fyrste halvdelen av det 20 hundreåret vart han nesten utrydda på grunn av jakt. Loggbøkene brukt i denne undersøkinga høyrer ...

The Dinoflagellates are an intriguing and diverse protist group in terms of morphology, ecology and geographical distribution amongst others. The proportion of heterotrophic and photosynthetic taxa are rougly even. However, ...

Abstract Six flatfish species were collected by trawling at five locations in the inner and middle Oslofjord between February and December in 2013. In total 386 individuals were sampled. The purpose of this investigation ...

The differences in early life history traits among populations of grayling in Lake Lesjaskogvatn and surrounding lakes have been extensively studied the last decades. These populations are the offspring of a small group ...

In studies on reproductive ecology of pelagic copepods, the role of males is often neglected and male reproductive investment is not well understood. Lately there has been an increasing interest in the topic and it has ...

Introduction: Lake productivity is determined by the amount of nutrients and light available. While phosphorus is the main limiting nutrient in freshwater systems light availability can be reduced by several factors, while ...