A5082561329- Marine animal studies overview
- Arctic and Antarctic ice dynamics
- Marine Bivalve and Aquaculture Studies
- Isotope Analysis in Ecology
- Physiological and biochemical adaptations
- Mercury impact and mitigation studies
- Marine and fisheries research
- Cryospheric studies and observations
- Ocean Acidification Effects and Responses
- Fish Ecology and Management Studies
- Aquaculture disease management and microbiota
- Marine and coastal plant biology
- Linguistic Variation and Morphology
- GaN-based semiconductor devices and materials
- Heat Transfer and Optimization
- Meat and Animal Product Quality
- Per- and polyfluoroalkyl substances research
- Salmonella and Campylobacter epidemiology
- Acoustic Wave Resonator Technologies
- Folklore, Mythology, and Literature Studies
- Underwater Acoustics Research
- Climate change and permafrost
- Effects of Environmental Stressors on Livestock
- Cleft Lip and Palate Research
- Marine Biology and Environmental Chemistry
Arctic Monitoring And Assessment Programme
2022-2024
UiT The Arctic University of Norway
2014-2020
Marine and Freshwater Research Institute
2018
Marine Mammal Commission
2009-2010
Wisconsin Disability Association
2004
Grønlands Naturinstitut
2002
Most controlled toxicity studies use single chemical exposures that do not represent the real world situation of complex mixtures known and unknown natural anthropogenic substances. In present study, contaminant cocktails derived from blubber polar bears (PB; Ursus maritimus) killer whales (KW; Orcinus orca) were used for in vitro concentration-response experiments with PB, cetacean seal spp. immune cells to evaluate effect realistic on various functions. Cytotoxic effects PB cocktail...
To gain insight into the use by ringed seals (Phoca hispida) of North Water polynya (northern Baffin Bay), we monitored movements and diving behaviour eight caught in fjords Thule (Avernarsuaq) area Northwest Greenland. The animals were August-September 1996 equipped with satellite transmitters. Contact was maintained for up to 146 days. Two left study soon after being equipped, one moved north Kane Basin southeastern Island. departure other six from apparently related formation landfast...
Ten narwhals (Monodon monoceros) were instrumented with satellite-linked radio transmitters in Tremblay Sound August 1997 (N = 5) and 1998 5). All whales stayed the waters around Bylot Island until end of September. On basis these animals others tagged previously (total N 24), it is believed that summering population has limited or no contact other populations Canada Greenland. Four monitored during their southward movement along east coast Baffin Island. Three them travelled close to shore,...
In conjunction with the International North Water Polynya Study in Smith Sound (northern Baffin Bay) 1997-99, we examined area use and diving activity of 23 ringed seals (Phoca hispida) that had been equipped satellite transmitters on Greenland side (NOW) area. The study covered period 12 August 1996-30 June 1999. Contact was maintained for an average 108 days (range: 8-332 days). Four emigrated from NOW During all seasons, remained spent about 90% time coastal (< 100 m deep) waters eastern...
Abstract Aim Identify hotspots and areas of high species richness for Arctic marine mammals. Location Circumpolar Arctic. Methods A total 2115 biologging devices were deployed on mammals from 13 in the 2005 to 2019. Getis‐Ord G i * calculated based number individuals grid cells each phylogenetic groups (nine pinnipeds, three cetaceans, all species) with identified summer (Jun‐Nov), winter (Dec‐May) entire year. Seasonal habitat differences among species’ investigated using Principal...
The energy and food requirements of free-ranging pinniped species are difficult to measure and, as a consequence, unknown for most species. They can be inferred from measures Field Metabolic Rate (FMR) made by the Doubly Labeled Water (DLW) method, however. In this work, we confirmed our hypothesis that FMR pinnipeds measured DLW described an allometric relationship function body weight. Although costly apply, method is one few possible methods generating estimates demands unrestrained,...
To assess the size and trends of abundance bowhead whale (Balaena mysticetus), beluga, or white (Delphinapterus leucas), narwhal (Monodon monoceros) visual aerial surveys were conducted in West Greenland March 1998 1999. An estimated 49 whales (95% CI: 13 to 188) present at surface 1998. Data from land-based observations enabled correction for that not available be seen during survey. By applying a rounded average 80% (SE=3) submergence an estimate 246 62 978) was obtained. The 76 47...
Circulating cortisol levels are accepted as a sensitive indicator of acute stress in marine mammals, particularly relation with capture and handling. The present study provides the first long-term monitoring four harbour porpoises held human care—an adult male female two juvenile females. It also compares blood obtained after removing animal from water (OWR sampling) at poolside under voluntary husbandry behaviours (VHB sampling). Cortisol differed significantly between porpoises, although...
The Trans-North Atlantic Sightings Survey (T-NASS) carried out in June-July 2007 was the fifth a series of large-scale cetacean surveys conducted previously 1987, 1989, 1995 and 2001. core survey area covered an about 1.8 million nm² spanning from Eastern Barents Sea at 34°E to east coast Canada, between 52°N 78°N south 42°N west. We present design-based abundance estimates Faroese Icelandic vessel components T-NASS, as well results ancillary vessels which adjoining areas. 4 dedicated used...
An adult Atlantic walrus (Odobenus rosmarus rosmarus) male (31 years old in 2001) tracked by use of satellite telemetry NE Greenland during four seasons (1989, 1990/1991, 2000/2001, revealed a remarkably high perennial tendency homing and consistency migration pattern. During all inshore summering periods (August to September), the animal used only one terrestrial haul-out from which it made excursions same general shallow water area (i.e., likely clam beds) western Dove Bay (ca. 76o 77o N)....
Abstract Reindeer in the arctic region live under very harsh conditions and may face temperatures below 233 K. Therefore, efficient conservation of body heat water is important for their survival. Alongside insulating fur, reindeer nasal mechanism mass exchange during respiration plays a fundamental role. We present dynamic model to describe transport that takes place inside nose, where we account complicated geometrical structure subsystems are part nose. The correctly captures trend...
Abstract Reindeer ( Rangifer tarandus ) have evolved elaborate nasal turbinate structures that are perfused via a complex vascular network. These subject to thermoregulatory control, shifting between heat conservation and dissipation, according the animal’s needs. The three-dimensional design of is essential in sense they determine efficiency with which water transferred structure respired air. turbinates already relatively large surface area at birth, but yet not reached complexity mature...
he walrus is the largest arctic pinniped.It occurs as two subspecies; Pacific walrus, Odobenus rosmarus divergens, occupies waters off western Alaska and eastern Siberia, Bering Chukchi Seas Strait, while Atlantic rosmarus, ranges, discontinuously, from Arctic Canada to west east Greenland, Svalbard Franz Josef Land.The Laptev Sea O.r. laptevi, was nominally a subspecies for time, but now thought be westernmost population of (Lindqvist et al. 2008).
The workshop was a 2-day event organised immediately before the Society for Marine Mammalogy biennial conference in Tampa. NAMMCO funding enabled participation of 4 invited experts and also supported organization logistics associated with workshop. breadth depth presentations made it clear that most issues concerning monodontid age estimation are not unique. Many researchers investigating many taxa have considered diversity methods tissues to reveal biological records age. Aside from...
Most of the data collected on reproduction harbour porpoises (Phocoena phocoena) comes from by-caught or stranded animals and is therefore opportunistic in nature. Harbour kept a human-controlled environment offer unique opportunity to gather same individual with known history over long period time. At Fjord&Baelt Kerteminde, Denmark, Freja, 10-y-old female porpoise, became pregnant September 2005 gave birth during night between 24 25 July 2006. Routinely sampled parameters, such as food...
Intrinsic biogeochemical markers, such as stable isotope ratios of carbon, nitrogen and sulphur, are increasingly used to trace the trophic ecology marine top predators. However, insufficient knowledge fractionation processes in tissues continues hamper use these markers.We performed a controlled feeding experiment with eight juvenile hooded seals (Cystophora cristata) that were held on herring-based diet (Clupea harengus) for two years. Stable measured via ratio mass spectrometry three...
Arctic hooded seals (Cystophora cristata) are monogastric carnivores that go through extreme fasting and re-feeding in early life. They born isolated on sea ice; suckle high-fat milk for four days may then fast up to one month before they start hunting feeding small prey (fish crustaceans). Previous studies of the gut microbiota pinnipeds have focused large intestine, while little data exist intestinal microbiota. In this study, bacterial microbiome proximal distal intestine captive two-year...
To date no problem-free method exists for the immobilisation of free‑ranging walruses (Odobenus rosmarus). In period 1989-2001, 69 immobilisations with etorphine HCl were performed by remote darting 41 individual free-ranging adult Atlantic (O. r. rosmarus), body masses 633 ‑ 1883 kg, as a rerequisite attachment radio tracking and dive recording instruments, studies metabolism. Ten individuals immobilised several times. We present data on these evaluate method. Full was achieved in 58 cases...
This is a reply to the research note ‘Swim Encounters with Killer Whales (Orcinus orca) off Northern Norway: Interactive Behaviours directed towards Human Divers and Snorkellers obtained from Opportunistic Underwater Video Recordings’ by C. Pagel, M. Scheer Lück published on Journal of Ecotourism in December 2016 issue. gives us opportunity reflect following aspects: (1) concepts sustainability ecotourism, (2) researchers’ position terms animal ethics, (3) relevance empirical context where...
Deuterium oxide was used to measure isotope dilution space 11 times in seven free living, adult, male Atlantic walruses ( Odobenus rosmarus ) (930–1597 kg) north-east Greenland the month of August 2000 and 2001. Telemetry instruments, which were attached animals as part a long term study, provided data on activity levels. Equilibration intravenously injected complete after 2–3 h. The application general correction factor developed for all pinniped species allowed estimation total body water...
To gain insight into the use by ringed seals (Phoca hispida) of North Water polynya (northern Baffin Bay), we monitored movements and diving behaviour eight caught in fjords Thule (Avernarsuaq) area Northwest Greenland. The animals were August-September 1996 equipped with satellite transmitters. Contact was maintained for up to 146 days. Two left study soon after being equipped, one moved north Kane Basin southeastern Island. departure other six from apparently related formation landfast...
The total consumption of bivalve prey by walruses (Odobenus rosmarus) in the important inshore summer feeding area Young Sound (about 74° N) Northeast Greenland was estimated. To determine relative use, movement and activity three adult male carrying satellite transmitters were studied during open-water season 1999 2001. Because one animals tracked both years study covered a four “walrus seasons”.
 Overall, spent c. 30% their time water between Sandøen Zackenberg. remaining along coast...