Now showing items 1-3 of 3
Changed Arctic-alpine food web interactions under rapid climate warming: implication for ptarmigan research
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-05)
Ptarmigan are herbivorous birds that are year-round residents of alpine and arctic ecosystems — presently subjected to the most rapid climate warming on earth. Yet, compared to other bird taxa there has been little climate impact research on ptarmigan. Ptarmigan population dynamics, in particular in the sub/low-arctic, appears to be strongly influenced by complex interactions with a suite of ...
Harmonizing circumpolar monitoring of Arctic fox: benefits, opportunities, challenges and recommendations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
The biodiversity working group of the Arctic Council has developed pan-Arctic biodiversity monitoring plans to improve our ability to detect, understand and report on long-term change in Arctic biodiversity. The Arctic fox (Vulpes lagopus) was identified as a target of future monitoring because of its circumpolar distribution, ecological importance and reliance on Arctic ecosystems. We provide ...
High goose abundance reduces nest predation risk in a simple rodent-free high-Arctic ecosystem
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-13)
Breeding geese are the preferred prey of the Arctic fox Vulpes lagopus in the high-Arctic Svalbard archipelago. According to the <i>apparent competition hypothesis (ACH)</i>, less-abundant prey species (e.g. ptarmigan, waders and small passerines) will experience higher predation rates when breeding in association with the more common prey (geese), due to spill-over predation by the shared predator. ...