Lars Asplin
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View article: "Norkyst" version 3: the coastal ocean forecasting system for Norway
"Norkyst" version 3: the coastal ocean forecasting system for Norway Open
We describe the operational forecasting system "Norkyst", now in version 3, which is used for predicting the ocean circulation along the coast of mainland Norway and in the fjords. The forecasting system is based on the Regional Ocean Mode…
View article: “Knowledge Strength”: maximising the reliability of evidence derived from environmental modelling in the face of uncertainty – the case of the salmon louse (<i>Lepeophtheirus salmonis</i>)
“Knowledge Strength”: maximising the reliability of evidence derived from environmental modelling in the face of uncertainty – the case of the salmon louse (<i>Lepeophtheirus salmonis</i>) Open
Policy developments for a sustainable Blue Economy require scientific advice. An important component of the Blue Economy is salmon (Salmo salar) aquaculture, the sustainability of which is limited by salmon louse (Lepeophtheirus salmonis) …
View article: Transport Of Atlantic Water In The Western Barents Sea
Transport Of Atlantic Water In The Western Barents Sea Open
No abstracts are to be cited without prior reference to the author.Measurements from an array of current meter moorings along a section between Norway and Bear Island indicate that the seasonal mean of inflowing Atlantic Water extends furt…
View article: Modelled distribution of salmon lice in a Norwegian fjord
Modelled distribution of salmon lice in a Norwegian fjord Open
No abstracts are to be cited without prior reference to the author.Salmon lice is a huge problem for both wild and farmed salmonid fish in fjords. An assessment of salmon lice in a fjord system will bring forward the knowledge of wild salm…
View article: Temperature And Salinity Fluctuations In The Norwegian Sea In Relation To Wind
Temperature And Salinity Fluctuations In The Norwegian Sea In Relation To Wind Open
No abstracts are to be cited without prior reference to the author.Hydrographic observations in the Svinøy section and results from the Princeton Ocean Model are used to investigate the role the wind forcing has on temperature and salinity…
View article: Transport Of Atlantic Water Through The Barents Sea
Transport Of Atlantic Water Through The Barents Sea Open
No abstracts are to be cited without prior reference to the author.The following is a brief summary of some results from our investigations: During the winter of 1999-2000 the water temperatures in the western parts of the Barents Sea was …
View article: A gap analysis on modelling of sea lice infection pressure from salmonid farms. I. A structured knowledge review
A gap analysis on modelling of sea lice infection pressure from salmonid farms. I. A structured knowledge review Open
Sustainability of aquaculture, an important component of the blue economy, relies in part on ensuring assessment of environmental impact and interactions relating to sea lice dispersing from open pen salmon and trout farms. We review resea…
View article: High resolution modeling of aluminium transport in a fjord estuary with focus on mean circulation and irregular flow events
High resolution modeling of aluminium transport in a fjord estuary with focus on mean circulation and irregular flow events Open
Environmental impact assessments of trace metals and radionuclides in estuarine waters will benefit from numerical transport models that can provide detailed and accurate predictions of concentrations of harmful physico-chemical forms of c…
View article: Going With the Flow – Population Genetics of the Kelp Saccharina latissima (Phaeophyceae, Laminariales)
Going With the Flow – Population Genetics of the Kelp Saccharina latissima (Phaeophyceae, Laminariales) Open
Saccharina latissima is the most important habitat-forming kelp in sheltered areas of North-Atlantic, and there is also an increasing interest in cultivation and utilization of S. latissima . The cultivation activity may introduce a risk o…
View article: Rapid water temperature variations at the northern shelf of the Yellow Sea
Rapid water temperature variations at the northern shelf of the Yellow Sea Open
During summer, there is great spatial variability in bottom water temperature on the northern shelf of the Yellow Sea. This variability is associated with a thermal front along the shelf. Oscillatory currents from semidiurnal and fortnight…
View article: New validation method for hydrodynamic fjord models applied in the Hardangerfjord, Norway
New validation method for hydrodynamic fjord models applied in the Hardangerfjord, Norway Open
We introduce a new intuitive evaluation method for comparison of fjord model results and current measurements. The approach is tested using high resolution model simulations and measurements in the Hardangerfjord, a large fjord system in N…
View article: The hydrodynamic foundation for salmon lice dispersion modeling along the Norwegian coast
The hydrodynamic foundation for salmon lice dispersion modeling along the Norwegian coast Open
Norway has complicated dynamics in the coastal ocean and in the fjords. In this area is also the largest salmon aquaculture industry in the world. The salmon industry is valuable for Norwegian economy worth more than 60 billion NOK. Thus, …
View article: Optimal estimation of lice release from aquaculture based on ambient temperatures
Optimal estimation of lice release from aquaculture based on ambient temperatures Open
Models for mapping and forecasting infective pressure from salmon louse Lepeophtheirus salmonis larvae are of major importance in the Norwegian government’s management of salmonid aquaculture. These models use site-reported temperature and…
View article: Mapping of Fish Spawning in the North Sea; Report of the “KINO-2” Project for 2019
Mapping of Fish Spawning in the North Sea; Report of the “KINO-2” Project for 2019 Open
Increased and updated knowledge of reproductive strategies of fish is crucial to optimize the temporal and spatial planning for conducting seismic surveys; in order to reduce its potential negative ecosystems impacts. The overall goal of t…
View article: Working Group on Environmental Interactions of Aquaculture (WGEIA)
Working Group on Environmental Interactions of Aquaculture (WGEIA) Open
Most of the\naquaculture production today takes place in Asia. In 2018, ICES countries\nreported a relatively modest production of 3.3 mill. metric tonnes from\nfreshwater (1.1%), brackish water (8.5%) and marine (80.4%) aquaculture. Effor…
View article: Currents on the northern shelf of the Yellow Sea
Currents on the northern shelf of the Yellow Sea Open
The currents of the northern shelf of the Yellow Sea are investigated using observations of current and hydrography and numerical current model results. The Regional Ocean Model System (ROMS) with a horizontal resolution about 1km is imple…
View article: Evaluation of a national operational salmon lice monitoring system—From physics to fish
Evaluation of a national operational salmon lice monitoring system—From physics to fish Open
The Norwegian government has decided that the aquaculture industry shall grow, provided that the growth is environmentally sustainable. Sustainability is scored based on the mortality of wild salmonids caused by the parasitic salmon lice. …
View article: Modelled salmon lice dispersion and infestation patterns in a sub-arctic fjord
Modelled salmon lice dispersion and infestation patterns in a sub-arctic fjord Open
Salmon lice infestation is a major challenge for the aquaculture industry in Norway, threatening wild salmonid populations and causing welfare problems for farmed salmon. Lice dispersion and infestation patterns are simulated by combining …
View article: Linking bacterial community structure to advection and environmental impact along a coast-fjord gradient of the Sognefjord, western Norway
Linking bacterial community structure to advection and environmental impact along a coast-fjord gradient of the Sognefjord, western Norway Open
Here we present novel data on bacterial assemblages along a coast-fjord gradient in the Sognefjord, the deepest (1308 m) and longest (205 km) ice-free fjord in the world. Data were collected on two cruises, one in November 2012, and one in…
View article: Toward a model-based prediction system for salmon lice infestation pressure
Toward a model-based prediction system for salmon lice infestation pressure Open
High salmon lice density is a threat to wild and farmed salmonid fish in Norway. To assess and identify areas for high salmon lice infestation pressure, continuous monitoring is necessary. The national Norwegian salmon lice monitoring prog…
View article: Nearby farms are a source of lice for wild salmonids: a reply to Jansen et al. (2016)
Nearby farms are a source of lice for wild salmonids: a reply to Jansen et al. (2016) Open
Jansen et al. (2016; Aquacult Environ Interact 8:349-350) question the regression analysis presented in Serra-Llinares et al. (2014; Aquacult Environ Interact 5:1-16), which correlates lice abundances on farmed and wild fish. Jansen et al.…