A5003004687- Marine animal studies overview
- Arctic and Antarctic ice dynamics
- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Arctic and Russian Policy Studies
- Isotope Analysis in Ecology
- Ocean Acidification Effects and Responses
- Marine and coastal plant biology
- Ichthyology and Marine Biology
- Food Industry and Aquatic Biology
- Underwater Acoustics Research
- Identification and Quantification in Food
- Cephalopods and Marine Biology
- Aquaculture Nutrition and Growth
- Mercury impact and mitigation studies
- Genetic diversity and population structure
- Insect-Plant Interactions and Control
- Coral and Marine Ecosystems Studies
- Indigenous Studies and Ecology
- Cryospheric studies and observations
- Scientific Research and Discoveries
- Meat and Animal Product Quality
- Ship Hydrodynamics and Maneuverability
- Reproductive biology and impacts on aquatic species
Norwegian Institute of Marine Research
2015-2024
The FRAM Centre
2019-2024
Migration Institute of Australia
2022-2024
Nofima
1994-2023
STMicroelectronics (France)
2022
UiT The Arctic University of Norway
1988-2016
Hiroshima University
2016
Institute of Marine Research
2013
Instituto de Investigacións Mariñas
2007-2011
Norwegian Polar Institute
2010
A total of 210 common minke whales (Balaenoptera acutorostrata) were sampled in five different areas the northeastern Atlantic during May-June 2000-04. Analysis forestomach contents revealed a relatively mixed diet at population level, whereas on an individual each whale had fed upon mainly one species. There significant differences composition between and some years. The importance krill Barents Sea increased with latitude dominated Spitsbergen diet. Capelin around Bear Island contributed...
The Barents Sea is one of the Polar regions where current climate and ecosystem change most pronounced. Here we review state knowledge physical, chemical biological systems in Sea. Physical conditions this area are characterized by large seasonal contrasts between partial sea-ice cover winter spring versus predominantly open water summer autumn. Observations over recent decades show that surface air ocean temperatures have increased, extent has decreased, stratification weakened, chemistry...
An account of the annual distribution and previous exploitation Greenland right Balaena mysticetus), blue (Balaenoptera musculus), fin physalus), sei borealis), humpback (Megaptera novaeangliae) sperm whales (Physeter macrocephalus) in Norwegian adjacent waters is presented. Where possible, present abundances these species are updated with data from sightings surveys conducted 1987–1989. The whale rarely seen probably nearly extinct. seems to be regularly migrating into Sea up west...
Investigations of hooded seals Cystophora cristata have revealed high prevalences Brucella-positive in the reduced Northeast Atlantic stock, compared to increasing Northwest stock. This study evaluated relation between Brucella-serostatus stock and age, sex, body condition reproduction. Bacteriology documented which animals organs were B. pinnipedialis positive. No relationship was observed or reproductive traits. Pups (<1 mo old) had a substantially lower probability being seropositive...
Global warming is affecting the population dynamics and trophic interactions across a wide range of ecosystems habitats. Translating these real-time effects into their long-term consequences remains challenge. The rapid extreme period that occurred after Last Glacial Maximum (LGM) during Pleistocene-Holocene transition (7-12 thousand years ago) provides an opportunity to gain insights responses natural populations periods with global warming. this post-LGM have been assessed in many...
The Arctic is warming rapidly, with concomitant sea ice losses and ecosystem changes. animals most vulnerable to food web changes are long-lived slow-growing such as marine mammals, which may not be able adapt rapidly enough respond in their resource bases. To determine the current extent sources of these bases, we examined isotopic trophic niches for mammals European using skin carbon (δ13C) nitrogen (δ 15N) stable isotope (SI) compositions from 10 species: blue, fin, humpback, minke, sperm...
Persistent organic pollutants (POPs), including brominated flame retardants (BFRs), perfluoroalkyl substances (PFAS) and metals, can accumulate in marine mammals be transferred to offspring. In this study, we analyzed 64 lipophilic POPs, four emerging BFRs, the blubber, liver muscle of 17 adult common minke whales (Balaenoptera acutorostrata) from Barents Sea investigate occurrence tissue partitioning. addition, placental transfer concentration ratios 14 PFAS metals were quantified nine...
Stomach content samples from 33 minke whales (Balaenoptera acutorostrata), caught during Norwegian commercial whaling between May-June 1998, were collected in four sub-areas the southern Barents Sea. Simultaneously, a comprehensive resource survey was conducted order to identify and estimate abundance of potential prey items for sub-areas. Krill (Thysanoessa sp. Meganyctphanes norvegica) dominated diet all but one sub-area although pelagic fish such as capelin herring also contributed...
Global warming is causing rapid change in marine food webs, particularly at northern latitudes where temperatures are increasing most rapidly. In this study, the diet of common minke whales Balaenoptera acutorostrata was assessed both terms short-term (morphological analyses digestive tract contents) and longer-term (tissue chemical markers: fatty acids stable isotopes) prey use Barents Sea to see if they shifting. Samples (blubber cores, muscle, stomach were obtained from 158 taken during...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 194:233-239 (2000) - doi:10.3354/meps194233 Prey preference and niche overlap of ringed seals Phoca hispida harp P. groenlandica in Barents Sea J. A. Wathne1, T. Haug2, C. Lydersen3,* 1Norwegian Fishery College, University Tromsø, 9037 Norway 2Norwegian Institute Fisheries Aquaculture, Breivika, PO Box 2511,...
The consumption of various prey species, required by the Barents Sea harp seal (Phoca groenlandica) stock in order to cover their energy demands, has been estimated combining data on density species and seasonal variations expenditure body condition seals. Data diet composition were collected period 1990-1996 sampling seals during different seasons, areas Sea. All based reconstructed biomass, adjustments made for differences digestibility crustaceans fish. number representing age sex groups...
Abstract Labansen, A. L., Lydersen, C., Haug, T., and Kovacs, K. M. 2007. Spring diet of ringed seals (Phoca hispida) from northwestern Spitsbergen, Norway. – ICES Journal Marine Science, 64: 1246–1256. Complete gastro-intestinal tracts (GITs) 267 five different locations in Spitsbergen were collected during spring the years 2002–2004. Diet was assessed based on hard part remains prey. Invertebrates constituted <2% all prey (relative frequency, Ni). Fish otoliths found seals; 1.7, 34.3,...
Abstract The polar cod were common in catches with bottom and pelagic trawl Spitsbergen coastal waters. O-group found the upper echo-layers (15–80 m), while adults confined to deeper layers. A size/depth segregation was noted layers smaller individuals occurring mostly shallower areas larger ones at greater depths. In general, hauls dominated by fish than 10 cm. Polar from waters generally apparently grew more slowly their counterparts central eastern Barents Sea. Additional informationNotes...
Abstract Two putative populations of hooded seals ( Cystophora cristata ) occur in the North Atlantic. The Greenland Sea population pup and breed on pack ice near Jan Mayen (‘West Ice’) while Northwest Atlantic is thought to Davis Strait, Gulf St. Lawrence (the ‘Gulf’), off southern Labrador or northeast Newfoundland ‘Front’). We used microsatellite profiling 300 individuals at 13 loci mitochondrial DNA sequencing control region 123 test for genetic differentiation between these four...
Minke whale (Balaenoptera acutorostrata) tissue (mainly blubber) was found in the gastrointestinal tracks of Greenland sharks (Somniosus microcephalus) collected Kongsfjorden, Svalbard, Norway. In order to determine whether were actively hunting whales, finding naturally dead whales or consuming offal from whaling, we checked genetic identity against DNA register for minke taken Norwegian whaling operations. All samples that had sufficient quality perform individual identifications traceable...
Abstract In this study, we assess prey consumption by the marine mammal community in northeast Atlantic [including 21 taxa, across three regions: (I) Icelandic shelf, Denmark Strait, and Iceland Sea (ICE); (II) Greenland Norwegian Seas (GN); (III) Barents (BS)], compare requirements with removals fisheries. To determine needs, estimates of energetic were combined diet abundance information for parameterizing simple allometric scaling models, taking uncertainties into account through...