The influence of weather conditions on the activity of high-arctic arthropods inferred from long-term observations |
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| Authors: | Toke T Høye Mads C Forchhammer |
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| Institution: | 1.Department of Arctic Environment, National Environmental Research Institute,University of Aarhus,Roskilde,Denmark;2.Current Address: Department of Wildlife Ecology and Biodiversity, National Environmental Research Institute,University of Aarhus,R?nde,Denmark;3.Centre for Integrated Population Ecology,Denmark |
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| Abstract: | Background Climate change is particularly pronounced in the High Arctic and a better understanding of the repercussions on ecological
processes like herbivory, predation and pollination is needed. Arthropods play an important role in the high-arctic ecosystem
and this role is determined by their density and activity. However, density and activity may be sensitive to separate components
of climate. Earlier emergence due to advanced timing of snowmelt following climate change may expose adult arthropods to unchanged
temperatures but higher levels of radiation. The capture rate of arthropods in passive open traps like pitfall trap integrates
density and activity and, therefore, serves as a proxy of the magnitude of such arthropod-related ecological processes. We
used arthropod pitfall trapping data and weather data from 10 seasons in high-arctic Greenland to identify climatic effects
on the activity pattern of nine arthropod taxa. |
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