atlantic walrus scientific name

Historically and currently, all parts of the walrus are used for food or other purposes. Odobenus comes from the Greek: "tooth walker", and refers to the walruses' method of pulling themselves up onto the ice with their long tusks. populations. Management of Atlantic walrus (Odobenus rosmarus rosmarus) in the arctic Atlantic. Paleo-eskimos appear to have abandoned the High Arctic between 2,300-1,500 BP, perhaps due to a cooling climate, which also may have affected the distribution of walrus. https://doi.org/10.7557/3.2855, Wiig, Ø., Berg, V., Gjertz, I. et al. Under the Nunavut Land Claims agreement of 1993 the Nunavut Wildlife Management Board (NWMB) was established. New additions to the group will walk around the periphery trying to find their spot or attempt to displace other animals (Salter 1979). Scientific Report from DCE—Danish Centre for Environment and Energy No. WWF is collecting postal codes so we can send you news and invitations most relevant to your area. An assessment of Greenland walrus populations. Microsatellite assessment of walrus (Odobenus rosmarus rosmarus) stocks in Canada. By the middle of the 19th century the stock showed clear signs of decrease. Help protect threatened species and their habitats. Marine Mammals of the Greenland Seas. Sea ice losses induced by global warming remained of serious concern as they may displace walrus towards land haulouts, away from food resources, thus generating increased energy expenditures to reach prey resources. Males also demonstrated larger home ranges than females during both seasons (Dietz et al. Future plans include aerial surveys at, year intervals of the Svalbard fraction of the Svalbard-Franz Josef Land population to monitor abundance trends. This lead to a decline in the annual catches from about 150 from 1999 to 2003, to about 80 from 2004 to 2008 and the latest assessment of the population indicated a growing population (NAMMCO 2018). Hunting by humans is the main cause of depletion of walrus during historic times (Born et al. https://doi.org/10.1016/B978-0-12-409548-9.12485-6, . The three stocks have been differentiated on the basis of genetics, distribution and migration patterns (Witting and Born 2014). 2014). In 1999 the NWMB created a walrus working group, which started developing a walrus management plan for Nunavut. In 1975 regulations for protecting and harvesting of marine mammals prohibited sport hunting of walruses as well as any landing on or the littering of shore haul-outs at any time. Stewart, R. E. A., Born, E. W., Dunn, J.B., et al. et al. NAMMCO, Tromsø, Norway. They are found in the northern waters of Canada, Greenland, Norway and Russia. Walrus, huge, seal-like mammal with long tusks (upper canine teeth) found in the Arctic seas. The Atlantic walrus (Odobenus rosmarus rosmarus) is particularly sensitive to shifts in its habitat that are accelerating as a result of climate change. 2006). and estimates of their food consumption. Appendix III concerns species which are not necessarily endangered, but which are managed by the listing nation. Polar Biology, 39, 1605–1614. 2014, Heide-Jørgensen et al. Special concern: A wildlife species that may become threatened or endangered because of a combination of biological characteristics and identified threats. 1992). Polar Biology, 23, 272–278. Canadian Journal of Fisheries and Aquatic Sciences, 56, , P.M., Davis, W.J., Stewart, R.E.A. The first investigation of walrus numbers in the Pechora Sea was carried out in 2011, through an aerial survey of 2,563 km of coastline which used a combination of infrared sensing and digital imagery. Towards a better understanding of the effects of UV on Atlantic walruses. monitored by digital camera during the period late June- early October to study, behaviour and the potential impact of visiting tourists to these sites. Walrus Odobenus rosmarus research in Svalbard, Norway, 2000- 2010. Two of the Greenland stocks are shared with Canada. Arctic, 61, 292–308. 22. https://www2.dmu.dk/Pub/SR22.pdf, Born, E. (2017) Walrus Odobenus rosmarus. The IUCN Red List of Threatened Species 2016: e.T15108A66992323. NAMMCO Scientific Publications, 9, 175-190. . So, without further ado, let the countdown begin! A male Pacific walrus can weigh up to 1700 kg and be nearly 4 m long. (2012). In 1956 hunting of the Atlantic walrus was prohibited for all Soviet citizens, excluding a limited subsistence harvest by aboriginal people (Wiig et al. The Laptev Sea walrus Odobenus rosmarus laptevi: an enigma revisited. Both male and female walruses have tusks and use them to make and maintain ice holes and pull themselves out of the water. Scientific name: Odobenus rosmarus rosmarus. Walrus seem to be fairly consistent across their geographic range in spending about 25% of their time hauled out, at least during late summer (Lydersen et al. Walruses seem to be fairly consistent across their geographic range in spending about 25% of their time hauled out, at least during late summer (Lydersen et al. Marine Ecology Progress Series, 375, 247–261. In 1971 the Novaya Zemlya population of walrus was included in the list of Rare Animals of the USSR. Hauled out walrus disturbed by noise may panic and flee, which can sometimes lead to the death of animals, especially calves, by trampling. The IUCN Red List of Threatened Species 2016: e.T15106A45228501. There is considerable variation in site use by walruses both within and between years (Stewart et al. The walrus' scientific name, Odobenus rosmarus, is Latin for "tooth-walking sea-horse." Nursing mostly takes place in the water but can also sometimes on land or ice. When there is no ice around, walrus can be hunted in open water, although this is more difficult and often less successful than hunting them on the ice. In 1938 and 1939, some restrictions were introduced on the hunting of walruses for Danish hunters and trappers, but not Norwegians, operating in North East Greenland north of about 73.30° N. These were introduced by the Danish hunting company “Nanok”. Congener- specific accumulation and patterns of chlorinated and brominated contaminants in adult male walruses from Svalbard, Norway: Indications for individual-specific prey selection. Such predation seems to be largely carried out by older males. . Although stock structure has been difficult to determine and there has been historical variation in the naming of stocks shared between Canada and West Greenland, in 2018, the NAMMCO Walrus Working Group agreed to operate with the following names for the Greenlandic stocks: Baffin Bay (a subunit of the former North Water population); West Greenland-Southeast Baffin Island (a ‘component’ of the larger Hudson Bay-Davis Strait population); and East Greenland (formerly Northeast Water). A surprising result from the same study was that individual variation in contaminant levels and patterns was very high, even though the walrus sampled were from a homogenous group that consisted solely of adult males from a restricted geographic area (, burdens have been confirmed high and of concern, with confirmed altered thyroid and immune function (, et al. (2016). The Canadian Department of Fisheries and Oceans (DFO) and the North Atlantic Marine Mammal Commission (NAMMCO) currently recognize two “genetic populations” and seven walrus stocks in Canada: the High Arctic population, which includes the Baffin Bay (BB), West Jones Sound (WJS), and Penny Strait-Lancaster Sound (PS-LS) stocks, and the central Arctic population, which includes the north and central Foxe Basin (N-FB, C-FB) and Hudson Bay-Davis Strait (HB-DS) stocks (see map) (DFO 2013, Stewart et al. However, trawl fisheries could disturb important benthic feeding areas, although the extent of this impact off western Greenland is not known (NAMMCO 2013, COSEWIC 2017). Some walrus, particularly large males, hunt and kill seals (ringed and bearded seals mostly, but also young walrus), seabirds and even narwhals and belugas (COSEWIC 2017). 1986, Fay et al. 2008). A multi-species synthesis of satellite telemetry data in the Pacific Arctic (1987–2015): Overlap of marine mammal distributions and core use areas. North Atlantic Marine Mammal Commission (NAMMCO). The Atlantic walrus also tends to have relatively shorter tusks and somewhat more flattened snout. Estimates of Abundance and Total Allowable Removals for Atlantic Walrus (, ) in the Canadian Arctic. Aerial survey of Atlantic walruses (Odobenus rosmarus rosmarus) in the Pechora Sea, August 2011. are quite conservative in their choice of habitat and food, so any reduction in either of these may have detrimental effects on their numbers. A disturbance can result in a stampede, which may be lethal to these animals. Information from hunts and surveys of walrus (Odobenus rosmarus) in northern Foxe Basin, Northwest Territories, 1982-1984. No females with calves were seen in this survey (Lydersen et al. The location of the 10 recognised stocks can be seen on the maps above. DFO Canadian Science Advisory Secretariat. Based on an abundance estimate from 2009, population modelling suggested historical takes caused only small changes in the population, with a maximum depletion to 80% of the estimated original population in 1890 (Witting and Born 2014). The walrus is listed in Appendix III of the Convention on International Trade in Endangered Species of Fauna and Flora (CITES). Carry-over from previous years are included in the quota numbers, where applicable. In Russian territory, regulations curtailing walrus harvest were introduced in 1921. The Struck-and-Lost Factor in Alaskan Walrus Harvests, 1952-1972. COSEWIC Assessment Date and Status Change: April 2006. (2014). Research on walrus populations in Greenland is ongoing, focusing on stock identification, walrus behaviour and population trends, with as prominent actor, the Greenland Institute of Natural Resources. Together they are the only living representatives of the family Odobenidae. 2008). Remains tend to be more common in the periods from around 2,500-2,300 BP and around 1,500-1,000 BP, than from the period in between. The populations once found in the St. Lawrence, Newfoundland and Nova Scotia have now gone extinct. DFO Canadian Scientific Advisory Secretariat. 2013a). ), Baffin Bay: An Updated Strategic Environmental Impact Assessment of Petroleum Activities in the Greenland Part of Baffin Bay, 127–137, Chapter 4.8.2. By default, 30 entries are shown, but this can be changed in the drop-down menu, where you can decide to show up to 100 entries per page. (2005). Redefining walrus stocks in Canada. Vocalizations appear to mediate at least some interactions between males during the breeding season. Further south, walrus from the HB-DS stock winter in Cumberland Sound and other areas around south Baffin Island (Stewart et al. Diurnal variation in haulout patterns has also been observed, with a tendency for walrus to haulout during the afternoon and evening (Stewart et al. Canadian Journal of Zoology, 74(5), 897–911. During stereotyped vocalizing cycles, the male always gives a distinct call, which was termed the diving vocalization, immediately after taking his last breath and descending from the surface (Stirling et al. Municipal authorities in Greenland also have the ability to implement further restrictions on walrus harvest if needed (NAMMCO 2013a). It also gives walruses better access to food than land-based haulouts. The scientific name of the walrus means "tooth-walker." Studies are also investigating level and trends of pollutants and the stock structure of Svalbard walrus. The implantation of the embryo is delayed for 3 or 4 months, after which the gestation period is 12 months (Richard 2001). https://doi.org/10.14430/arctic2275, Ugarte, F., Rosing-Asvid, A., Heide-Jørgensen, M.P. 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atlantic walrus scientific name 2021