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Factors affecting the breeding success of the grey heron (Ardea cinerea) in northern Poland
The aim of this study was to estimate the importance of factors affecting the breeding success of the grey heron (Ardea cinerea) in three colonies in the northern Poland (Mosty, Kiersity and KątyExpand
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Climate change and phenological responses of two seabird species breeding in the high-Arctic
The timing of breeding is a life-history trait that can greatly affect fitness, because suc- cessful reproduction depends on the match between the food requirements for raising young and the seasonalExpand
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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, AgnieszkaExpand
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The Response of the Grey Heron to a Rapid Increase of the Round Goby
Abstract The fish community of the Gulf of Puck in the Baltic Sea has changed in recent years following the successful introduction of the Round Goby (Neogobius melanostomus). The first specimen ofExpand
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Diversification of Nitrogen Sources in Various Tundra Vegetation Types in the High Arctic
Low nitrogen availability in the high Arctic represents a major constraint for plant growth, which limits the tundra capacity for carbon retention and determines tundra vegetation types. The limitedExpand
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Faeces deposition and numbers of vertebrate herbivores in the vicinity of planktivorous and piscivorous seabird colonies in Hornsund, Spitsbergen
Ornithogenic tundra developing near large seabird colonies with its dense vegeta− tion creates sites for foraging, hiding and breeding of herbivores. Grazing, trampling and fae− ces deposition areExpand
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Diet composition and food consumption of the grey heron (Ardea cinerea) from breeding colonies in northern Poland
The diet of the grey heron (Ardea cinerea) was investigated in three colonies in northern Poland (Mosty, Kiersity and Kąty Rybackie) varying in size, habitat type and composition of feeding areasExpand
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Predicting the Sex of Dovekies by Discriminant Analysis
Abstract We examined sexual dimorphism of Dovekie (Alle alle) from the breeding colony in Hornsund (south Spitsbergen). Each bird was sexed using DNA extracted from blood. Body morphometricsExpand
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Concentrations of lead and other elements in the liver of the white-tailed eagle (Haliaeetus albicilla), a European flagship species, wintering in Eastern Poland
As a top predator, the white-tailed eagle (Haliaeetus albicilla) may serve as a good indicator species, providing information about the bioavailability of contaminants and their transfer within theExpand
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Foraging by little auks in the distant marginal sea ice zone during the chick-rearing period
During the chick-rearing period, little auks Alle alle adopt a bimodal foraging strategy, alternating long trips with several short ones. It has been postulated that they reach more remote areasExpand
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