Cardiomyopathy syndrome (CMS) caused by piscine myocarditis virus (PMCV) is a severe cardiac disease in Atlantic salmon (Salmo salar) and one of the leading causes of morbidity and mortality in the Norwegian aquaculture industry. Previous research suggest a variation in individual susceptibility to develop severe disease, however the role of the immune response in determining individual outcome ...

We provide a descriptive comparative analysis of features related to emergence and design among 14 Rights of Nature (RoN) case studies worldwide. For analysis, we develop a schematic roadmap in which we categorise RoN into case studies with public guardianship and ones with appointed guardians (termed Environmental Legal Personhoods (ELPs) with further sub-categories of indirect, direct and living ...

In subarctic mountain birch forests, reindeer grazing and moth outbreaks act as important biotic drivers of ecosystem functioning. We investigated how a long-term contrast in reindeer grazing regimes and short-term ungulate exclusion affected soil fungal and bacterial communities in mountain birch forests recovering from a recent moth outbreak. We separately described the impacts on microbial ...

Fish behaviour affects the performance of selection devices in fishing gears. Traditionally, fish behaviour in relation to selection devices is assessed by direct observation. However, this approach has limitations, and the observations are not explicitly incorporated in the selectivity models. Further, underwater observations and quantification of fish behaviour can be challenging. In this study ...

Background Despite urban (domestic dog) rabies cycles being the main target for rabies elimination by 2030, syl‑ vatic (wildlife) rabies cycles can act as rabies spillovers especially in settlements contiguous to wildlife reserves. Rural communities next to wildlife reserves are characterized by unique socio-demographic and cultural practices includ‑ ing bat consumption, hunting for bushmeat, and ...

Marine invertebrate habitats are experiencing warming, and oceanic carbon dioxide levels are on the rise. These changes result in shifts in species distributions. Monitoring and understanding these shifts provides vital information because each species plays a unique ecological role, and the human utilization of marine species is intrinsically linked to their geographic locations. Here, we ...

The aquaculture sector is in pursuit of sustainable and cost-effective raw materials for feed, and the copepod Calanus finmarchicus is a marine zooplankton species of commercial interest because of its high abundance in northern areas. These copepods have the potential to meet the demand for vast quantities of marine raw materials. However, the lack of an energy- and catch-efficient trawl technology ...

Measurements of secondary production—the generation of heterotrophic biomass over time—are scarce in Arctic marine ecosystems but crucial for studying food web dynamics. Large, lipid-rich copepods of the genus Calanus dominate Arctic mesozooplankton biomass, while small copepods (<2 mm adult size) are most abundant yet understudied due to study biases. This PhD thesis aimed to 1) elucidate spatial ...

The impact of a rapidly shifting sea-ice cover on climate, ecosystem processes and biophysical habitat properties is not yet fully understood, particularly in the central Arctic Ocean, due to a lack of spatially representative observations. From June to July 2020 during the year-long Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC, leg 4) in the Transpolar Drift, we ...

The snow crab (Chionoecetes opilio) in the Barents Sea is an invasive species, first discovered in 1997. Since 2012, a commercial fishery has developed, and various management measures have been implemented. Despite fishing gear restrictions, limits for the catch season and the implementation of a TAC-regime in 2017 onwards, the fishery struggles with substantial sustainability challenges. ...