Publikationsdatum:
2013-01-19
Beschreibung:
Recently accumulated evidence has documented a climate impact on the demography and dynamics of single species, yet the impact at the community level is poorly understood. Here, we show that in Svalbard in the high Arctic, extreme weather events synchronize population fluctuations across an entire community of resident vertebrate herbivores and cause lagged correlations with the secondary consumer, the arctic fox. This synchronization is mainly driven by heavy rain on snow that encapsulates the vegetation in ice and blocks winter forage availability for herbivores. Thus, indirect and bottom-up climate forcing drives the population dynamics across all overwintering vertebrates. Icing is predicted to become more frequent in the circumpolar Arctic and may therefore strongly affect terrestrial ecosystem characteristics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hansen, Brage B -- Grotan, Vidar -- Aanes, Ronny -- Saether, Bernt-Erik -- Stien, Audun -- Fuglei, Eva -- Ims, Rolf A -- Yoccoz, Nigel G -- Pedersen, Ashild O -- New York, N.Y. -- Science. 2013 Jan 18;339(6117):313-5. doi: 10.1126/science.1226766.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Conservation Biology, Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway. brage.b.hansen@ntnu.no〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23329044" target="_blank"〉PubMed〈/a〉
Schlagwort(e):
Animals
;
Arctic Regions
;
Arvicolinae/*physiology
;
*Climate Change
;
Foxes/*physiology
;
Galliformes/*physiology
;
Herbivory
;
Ice Cover
;
Population Dynamics
;
Rain
;
Reindeer/*physiology
;
Snow
Print ISSN:
0036-8075
Digitale ISSN:
1095-9203
Thema:
Biologie
,
Chemie und Pharmazie
,
Informatik
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
