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Published on Apr 1, 2016in Polar Biology2.00
Dominik A. Nachtsheim2
Estimated H-index: 2
Claude R. Joiris21
Estimated H-index: 21
Diederik D’Hert3
Estimated H-index: 3
The ivory gull Pagophila eburnea is an Arctic seabird species whose distribution is tightly coupled to the availability of sea ice. During the last decades, strong declines have been reported for breeding colonies in Canada and Greenland, which are usually located on nunataks or remote coastal islands. Here, we report the observation of a colony of ivory gulls breeding on a gravel-covered iceberg 70 km off Northeast Greenland in August 2014. It concerned approximately 60 adults, including two ri...
Published on Aug 1, 2015in Progress in Oceanography3.25
James R. Lovvorn31
Estimated H-index: 31
(SIU: Southern Illinois University Carbondale),
Aariel R. Rocha2
Estimated H-index: 2
(SIU: Southern Illinois University Carbondale)
+ 3 AuthorsAbby N. Powell19
Estimated H-index: 19
(UAF: University of Alaska Fairbanks)
Abstract Four species of threatened or declining eider ducks that nest in the Arctic migrate through the northeast Chukchi Sea, where anticipated industrial development may require prioritizing areas for conservation. In this nearshore corridor (10–40 m depth), the eiders’ access to benthic prey during the spring is restricted to variable areas of open water within sea ice. For the most abundant species, the king eider ( Somateria spectabilis ), stable isotopes in blood cells, muscle, and potent...
Published on Jul 1, 2015in Environmental Toxicology and Chemistry3.42
Magali Lucia5
Estimated H-index: 5
Nanette Verboven10
Estimated H-index: 10
+ 5 AuthorsGeir Wing Gabrielsen56
Estimated H-index: 56
The ivory gull Pagophila eburnea is a high-Arctic species threatened by climate change and contaminants. The objective of the present study was to assess spatial variation of contaminant levels (organochlorines [OCs], brominated flame retardants [BFRs], perfluorinated alkyl substances [PFASs], and mercury [Hg]) in ivory gulls breeding in different areas across the Arctic region as a baseline for potential future changes associated with climate change. Contaminants were already determined in eggs...
Published on Mar 1, 2015in Global Change Biology8.88
David Grémillet5
Estimated H-index: 5
(University of Montpellier),
Jérôme Fort18
Estimated H-index: 18
(CNRS: Centre national de la recherche scientifique)
+ 4 AuthorsMaria V. Gavrilo9
Estimated H-index: 9
Arctic climate change has profound impacts on the cryosphere, notably via shrinking sea-ice cover and retreating glaciers, and it is essential to evaluate and forecast the ecological consequences of such changes. We studied zooplankton-feeding little auks (Alle alle), a key sentinel species of the Arctic, at their northernmost breeding site in Franz-Josef Land (80°N), Russian Arctic. We tested the hypothesis that little auks still benefit from pristine arctic environmental conditions in this rem...
Published on Feb 1, 2015in Polar Biology2.00
Rafał Boehnke5
Estimated H-index: 5
(PAN: Polish Academy of Sciences),
Marta Gluchowska8
Estimated H-index: 8
(PAN: Polish Academy of Sciences)
+ 5 AuthorsKatarzyna Blachowiak-Samolyk13
Estimated H-index: 13
(PAN: Polish Academy of Sciences)
The complete diet composition structure of the most numerous planktivorous sea bird, little auk (Alle alle), in the European Arctic, is still not fully recognized. Although regular constituents of little auk chick diets, the copepods, Calanus glacialis and C. finmarchicus have been previously relatively well described, more taxa were frequent ingredients of the bird’s meals. Therefore, the role of the little auks supplementary diet components (SDCs) at two colonies in the Svalbard Archipelago, H...
Published on Dec 31, 2014in PLOS ONE2.78
Nora C. Spencer2
Estimated H-index: 2
(Acadia University),
H. Grant Gilchrist26
Estimated H-index: 26
(Carleton University),
Mark L. Mallory18
Estimated H-index: 18
(Acadia University)
The ivory gull (Pagophila eburnea) is an endangered seabird that spends its entire year in the Arctic environment. In the past three decades, threats from various sources have contributed to a >70% decline in Canada. To assess the annual habitat needs of this species, we attached satellite transmitters to 12 ivory gulls on Seymour Island, Nunavut in 2010, which provided up to four breeding seasons of tracking data. Analysis of migratory behaviour revealed considerable individual variation of pos...
Published on Feb 5, 2014
Samuel A. Iverson2
Estimated H-index: 2
(Carleton University),
H. Grant Gilchrist12
Estimated H-index: 12
(EC: Environment Canada)
+ 2 AuthorsMark R. Forbes32
Estimated H-index: 32
(Carleton University)
Northern polar regions have warmed more than other parts of the globe potentially amplifying the effects of climate change on biological communities. Ice-free seasons are becoming longer in many areas, which has reduced the time available to polar bears (Ursus maritimus) to hunt for seals and hampered bears’ ability to meet their energetic demands. In this study, we examined polar bears’ use of an ancillary prey resource, eggs of colonial nesting birds, in relation to diminishing sea ice coverag...
Published on Mar 1, 2014in Ecological Applications4.38
James R. Lovvorn31
Estimated H-index: 31
(SIU: Southern Illinois University Carbondale),
Eric M. Anderson8
Estimated H-index: 8
(British Columbia Institute of Technology)
+ 5 AuthorsChristopher A. North6
Estimated H-index: 6
(UW: University of Wyoming)
With changing climate, delineation of protected areas for sensitive species must account for long-term variability and geographic shifts of key habitat elements. Projecting the future adequacy of protected areas requires knowing major factors that drive such changes, and how readily the animals adjust to altered resources. In the Arctic, the viability of habitats for marine birds and mammals often depends on sea ice to dissipate storm waves and provide platforms for resting. However, some wind c...
Published on Mar 1, 2014in Journal of Geophysical Research3.23
Sarah N. P. Wong1
Estimated H-index: 1
Carina Gjerdrum11
Estimated H-index: 11
+ 1 AuthorsMark L. Mallory18
Estimated H-index: 18
The distribution and thickness of sea ice in the Arctic is changing rapidly, resulting in changes to Arctic marine ecosystems. Seabirds are widely regarded as indicators of marine environmental change, and understanding their distribution patterns can serve as a tool to monitor and elucidate biological changes in the Arctic seas. We examined the at-sea distribution of seabirds in the North American Arctic in July and August, 2007–2012, and marine areas of high density were identified based on bi...
Published on Jan 1, 2014in Journal of Marine Systems2.54
Christian Lydersen46
Estimated H-index: 46
(NPI: Norwegian Polar Institute),
Philipp Assmy20
Estimated H-index: 20
(NPI: Norwegian Polar Institute)
+ 10 AuthorsØystein Varpe24
Estimated H-index: 24
(NPI: Norwegian Polar Institute)
Abstract Approximately 60% of Svalbard's land areas are glaciated at the present time. The Archipelago has more than 1100 glaciers (> 1 km 2 ) and 163 of these are “tidewater glaciers” — that is glaciers that terminate (with their calving front) at the sea. It has been known for a long time that these glacier front areas are important feeding areas for seabirds and marine mammals. Herein, we review current knowledge regarding the importance of these areas for these animals and reflect upon the p...
View next paperArctic ocean–sea ice–climate interactions