Oil production in Arctic ice-covered areas poses a risk for pollution of the ecosystem including that within the brine channel network of sea ice. Sea-ice autotrophs contribute substantially to Arctic primary production, but are inherently difficult to test for oil exposure responses in situ. This study had two objectives, first, we developed a suitable lab-based mesocosm system, second, we tested ...

The European Commission’s recently published ‘Farm to Fork’ strategy seeks to facilitate a transition towards a sustainable food system. The strategy moves from a linear understanding of the food system towards a more circular view of the system’s complex interdependencies. Despite these laudable intentions, it does not follow the guidance of the EU’s Group of Chief Scientific Advisors that the ...

The effects of harvest and fluctuating environment on inter-dependent predators and prey are complex and not well-known. We define a stochastic model where the predators and prey dynamically interact. The novelty of the model holds on the fact that predators and prey dynamics are simultaneously affected by correlated environmental noises. Interacting predators and prey are harvested using a proportional ...

The management of multispecies fisheries, such as the Mediterranean bottom trawl fishery, is always a challenge. However, information on gear selectivity and discards has been studied separately so far. In this paper, the overall size-selection pattern by the trawl codend in the sea and by the fisher onboard the vessel is investigated for four commercially important fish species, Mullus barbatus, ...

Size selectivity and catch efficiency of six diamond-mesh codends with different mesh sizes, 25–54 mm (termed as D25-D54), for conger pike (Muraenesox cinereus) were tested and compared using the covered codend method in the South China Sea (SCS). In order to address the present minimum mesh size (MMS) regulations of the trawl fishery for conger pike in the SCS, we quantified the selective properties ...

As a general rule, only active fishermen can own fishing boats for commercial fishing in Norway. Thus, vertical integration is not allowed. Accordingly, the Norwegian empirical context is exceptionally well suited to study actual rent creation as a potential resource rent can only accrue to the catch stage of the value chain. This paper examines profitability and rent generation of 35 seagoing ...

Brucellosis is a neglected zoonotic bacterial disease in most of the developing world that has a significant impact on public health. The prevalence of brucellosis in livestock, particularly in large and small ruminants is variable in many countries and seems to remain high, especially amongst subsistence and small-scale livestock farmers. There are different factors that may influence the prevalence ...

ecent events around the world have revealed varying degrees of public support for climate change and environmental regulation. Applying a latent class logit model, this study investigates Norwegian and Scottish public’s economic support for proposed deep sea management policies for novel attributes, identifying the presence of preference heterogeneity. Marine litter and health of fish stocks were ...

We used an index approach to calculate demand growth for seafood in 107 countries from 1984 to 2013. We used the results to calculate aggregate demand growth by income level, regionally, and globally. While seafood production has more than doubled since the mid-1980s, we showed that global demand for seafood has been higher than the global seafood supply. Demand growth for seafood varies across time, ...

Traditional morphological methods for species identification are highly time consuming, especially for small organisms, such as Foraminifera, a group of shell-building microbial eukaryotes. To analyze large amounts of samples more efficiently, species identification methods have extended to molecular tools in the last few decades. Although a wide range of phyla have good markers available, for ...