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Climate change and phenological responses of two seabird species breeding in the high-Arctic
This study identifies some spring environ- mental factors important for regulating the timing of breeding in the high-Arctic, most likely through effects on snow cover limiting access to nest sites and the development of the polar marine food web.
Diversification of Nitrogen Sources in Various Tundra Vegetation Types in the High Arctic
The stable nitrogen isotope mixing mass balance indicates the ratio between the actual N-loads acquired by plants from different N-sources in the Arctic tundra and the used methodological approach can be applied elsewhere.
The influence of a seabird colony on abundance and species composition of water bears (Tardigrada) in Hornsund (Spitsbergen, Arctic)
Ornithogenic enrichment of soil and locally facilitated development of mosses over lichens might be important factors responsible for the increase in invertebrate abundance in polar regions.
Foraging closer to the colony leads to faster growth in little auks
Investigation of foraging trips of a small planktivorous alcid, the little auk Alle alle, using miniature GPS loggers finds chicks in the Arctic environment achieved both peak body mass and fledging age earlier, suggesting faster chick growth than in the Atlantic environment.
Response of Dovekie to Changes in Food Availability
Abstract Dovekie (Alle alle) parents feed their chicks almost exclusively with high energy Arctic zooplankton associated with cold polar waters. In years with a stronger influx of warm Atlantic
Interannual changes in zooplankton on the West Spitsbergen Shelf in relation to hydrography and their consequences for the diet of planktivorous seabirds
Slawomir Kwasniewski1*, Marta Gluchowska1, Wojciech Walkusz1,2, Nina J. Karnovsky3, Dariusz Jakubas4, Katarzyna Wojczulanis-Jakubas4, Ann M. A. Harding5, Ilona Goszczko1, Malgorzata Cisek1, Agnieszka
Foraging by little auks in the distant marginal sea ice zone during the chick-rearing period
The extended duration of long foraging trips may enable birds to collect food for chicks on food-abundant, remote foraging grounds as well as acquire, process and excrete food needed for self-maintenance, reducing the costs of flight to the colony.
Parental efforts of an Arctic seabird, the little auk Alle alle, under variable foraging conditions
Abstract Observed large-scale changes in climate and oceanography, which are especially pronounced in the Arctic, represent profound challenges for upper trophic predators. Knowledge about the extent