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Effects of calcium supplementation on oxidative status and oxidative damage in great tit nestlings inhabiting a metal-polluted area
Calcium has been proposed to diminish metal toxicity by the modulation of the oxidative stress. This study explores the effects of Ca availability and metal exposure on oxidative stress biomarkers in great tit (Parus major) ...
Insectivorous birds can see and smell systemically herbivore-induced pines
Several studies have shown that insectivorous birds are attracted to herbivore-damaged trees even when they cannot see or smell the actual herbivores or their feces. However, it often remained an open question whether birds ...
Where do the treeless tundra areas of northern highlands fit in the global biome system: toward an ecologically natural subdivision of the tundra biome
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According to some treatises, arctic and alpine sub-biomes are ecologically similar, whereas others find them highly dissimilar. Most peculiarly, large areas of northern tundra highlands fall outside of the two ...
Effects of experimental perturbation of group structure on hierarchy formation and behaviour in House Sparrows
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Establishment of dominance hierarchies has been proposed as amechanism that stabilizes andmaintains social groups by reducing physical intra-group conflicts. However, the exact behavioural processes involved in ...
Interspecific information on predation risk affects nest site choice in a passerine bird
<div>Background</div><div>Breeding site choice constitutes an important part of the species niche. Nest predation affects breeding site choice, and has been suggested to drive niche segregation and local coexistence of ...
Population dynamics of two beaver species in Finland inferred from citizen-science census data
A species' distribution and abundance in both space and time play a pivotal role in ecology and wildlife management. Collection of such large-scale information typically requires engagement of volunteer citizens and tends ...