16 articles in this issue
Jill Prewitt
Robert EA Stewart, Kit M Kovacs, Mario Acquarone
Aaron BA Shafer, Corey S Davis, David W Coltman, Robert EA Stewart
Walruses in Canada are currently subdivided into seven stocks based on summering areas; Western Jones Sound (WJS), Baffin Bay (BB), Penny Strait-Lancaster Sound (PS-LS), North Foxe Basin (N-FB), Central Foxe Basin (C-FB), Hudson Bay Davis Strait (HB-DS) a... see more
Liselotte Wesley Andersen, Erik W Born, Robert EA Stewart, Rune Dietz, DW Doidge, Clement Lanthier
Until recently Atlantic walruses (Odobenus rosmarus rosmarus) have been subject to relatively intense exploitation in West Greenland. Animals in this stock have also been hunted in Nunavut/Canada. However, the demographic identity of these animals and the... see more
Rune Dietz, Erik W Born, Robert EA Stewart, Mads Peter Heide-Jørgensen, Harry Stern, Frank Rigét, Leif Toudal, Clement Lanthier, Mikkel Villum Jensen, Jonas Teilmann
Between 2005 and 2008, 31 walruses were tagged with Argos satellite transmitters at their wintering grounds at Store Hellefiske Banke, Central West Greenland (N=23), and at their summering grounds off the coast of Southeast Baffin Island, Canada (N=8). Tw... see more
E W Born, E Stefansson, B Mikkelsen, K L Laidre, L W Andersen, F F Rigét, M Villum Jensen, D Bloch
This study reports on the first successful identification of the site of origin of an extralimital walrus in Europe. On 24 February 2010 an adult male Atlantic walrus (Odobenus rosmarus rosmarus) migrant was instrumented with a SPOT-5 satellite-linked tra... see more
Robert EA Stewart, Erik W Born, J Blair Dunn, William R Koski, Anna K Ryan
Surveys to estimate walrus abundance at terrestrial haulout sites in the Penny Strait-Lancaster Sound (PS-LS) and West Jones Sound (WJS) stocks were conducted in 1977 and 1998-2009. The Minimum Counted Population (MCP) was similar in 1977 (565) to recent ... see more
Robert EA Stewart, Erik W Born, Rune Dietz, Mads Peter Heide-Jørgensen, Frank Farsø Rigét, Kristin Laidre, Mikkel Villum Jensen, Lars Ø Knutsen, Sabrina Fossette, J B Dunn
Atlantic walruses (Odobenus rosmarus rosmarus) belonging to the Baffin Bay subpopulation occur year round in the North Water polynya (NOW) between NW Greenland and eastern Ellesmere Island (Canada). They are hunted for subsistence purposes by residents of... see more
Robert EA Stewart, Erik W Born, Rune Dietz, Anna K Ryan
To support management objectives in Canada and Greenland, joint research between the Department of Fisheries and Oceans and Greenland Institute of Natural Resources was begun in 2005. Direct counts were used to determine the Minimum Counted Population (MC... see more
Mads Peter Heide-Jørgensen, Kristin Laidre, Sabrina Fossette, Marianne H Rasmussen, Nynne Hjort Nielsen, Rikke G Hansen
Walruses (Odobenus rosmarus) are exploited for subsistence purposes in West Greenland. However, current information about the abundance of walruses subject to harvest in eastern Baffin Bay subject to harvest has been unavailable despite being critical for... see more
Christian Lydersen, Kit M Kovacs
Herein we report results from studies on walruses in Svalbard conducted in 2000-2010. Data from newly developed satellite relay data loggers (SRDLs) revealed seasonal differences in habitat use of adult male walruses. During winter, they moved into areas ... see more
Lars Witting, Erik Born
The historical and current dynamics of the three Atlantic walrus (Odobenus rosmarus rosmarus) populations that occur in Greenland are estimated using age- and sex-structured population models with exponential growth, density-regulated growth and selection... see more
D Bruce Stewart, Jeff W Higdon, Randall R Reeves, Robert EA Stewart
Knowledge of changes in abundance of Atlantic walruses (Odobenus rosmarus rosmarus) in Canada is important for assessing their current population status. This catch history collates available data and assesses their value for modelling historical populati... see more
Øystein Wiig, Erik W Born, Robert EA Stewart
We review the management of Atlantic walruses (Odobenus rosmarus rosmarus) past and present in the four range states—Canada, Greenland, Norway and Russia—which have permanent populations of Atlantic walruses. Populations in all four countries have been de... see more
Mario Acquarone, Erik W Born, David Griffiths, Lars Øyvind Knutsen, Øystein Wiig, Ian Gjertz
To date no problem-free method exists for the immobilisation of free-ranging walruses (Odobenus rosmarus). In the period 1989-2001, 69 immobilisations with etorphine HCl were performed by remote darting of 41 individual free-ranging adult Atlantic walruse... see more
David Griffiths, Erik W Born, Mario Acquarone
Physiological studies involving the use of isotopic water required chemical restraint of free-ranging walruses (Odobenus rosmarus) for several hours. In August 2000, six male walrus (total body mass: 1050–1550 kg) were immobilized in East Greenland by rem... see more