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Research
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Varanger
Svalbard
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COAT Data Portal
COAT weather stations
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Varanger
Svalbard
Modules
Overview: COAT modules
Arctic fox module
Arctic fox - Varanger
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Climate module
Goose module
Mosstundra module
Ptarmigan module
Ptarmigan - Varanger
Ptarmigan - Svalbard
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Ungulate module
Ungulate - Varanger
Ungulate - Svalbard
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COAT scientific papers
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COAT scientific papers
Featured articles
08.12.2021
Drone-based mapping of changed vegetation
COAT researchers monitor vegetation disturbances by biotic and abiotic factors, such as herbivory and extreme winter weather. However, these are not typical vegetation classes included in remote-sensing based maps.
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21.09.2021
Do the forbs miss the Mammoth?
An international team led by a COAT -professor at UiT proposes a mechanism by which the large Pleistocene mammals were essential in promoting a very high floristic diversity, and that a similar mechanism is likely to promote diversity in our contemporary grasslands. The idea arised in the tundra grasslands of Varanger Peninsula during monitoring ...
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31.08.2021
Cascading effects of moth outbreaks on subarctic soil food webs
Large‐scale moth outbreaks have led to profound changes in plant communities from birch forests dominated by dwarf shrubs to grass‐dominated systems. However, the indirect effects on the belowground compartment are poorly known.
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18.02.2021
Understanding and predicting how climate change impacts Svalbard ptarmigan population dynamics
Iterative near-term forecasting is a promising approach to better understand and manage rapidly changing ecosystems such as the Arctic. Forecasts generated on a short-term time scale allow scientific hypotheses to be tested more frequently, speeding up scientific advancement, and are relevant to managers because the time scale can be influenced by...
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27.11.2020
It is important to consider food web interactions when assessing how well mesopredator culling programs work
Management of endangered species by culling mesopredators is increasingly common. To what extent such programs work as intended, is less clear. In a new study , COAT researchers evaluated the impact of red fox culling on a threatened ptarmigan species.
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26.10.2020
New method: Chemical traits of single leaves using near‐infrared reflectance spectroscopy (NIRS)
Measures of plant chemical traits are often achieved by merging several leaves, masking potential foliar variation within and among plant individuals. In a new study , COAT researchers developed a new application of Near-infrared Reflectance Spectroscopy (NIRS) methodology that provides measures of carbon, nitrogen, phosphorus, and silicon from ...
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18.03.2020
The Arctic is greening, bird populations are declining: Is there a link?
Ecological theory predicts that increased productivity at the base of food chains may raise predation rates at intermediate levels. New research by the Climate-ecological Observatory for Arctic Tundra (COAT) finds a link between plant productivity in tundra landscapes and bird nest predation rates.
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17.12.2018
An uncertain future for the mountain birch forest
Outbreaks by geometrid moths have caused extensive damage to mountain birch forest in northern Scandinavia during the last 15 years. A new study helps to explain why the damage has been so severe and suggests that the forest may fail to recover in the most heavily affected areas.
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24.09.2018
Rodent-plant interactions are temporally variable
Rodent abundance during population peaks in the tundra is highly variable. In a new study COAT researchers attempted to use data from one peak to predict where the rodents would be most abundant during the next peak.
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06.02.2018
Goose density influences predation on ground-nesting birds in Svalbard
The number of geese that spend the summer in Svalbard has increased in recent years. Geese nest on the ground, where their eggs and chicks are easy prey for arctic foxes. If goose colonies attract foxes, how might that affect the survival of other birds that nest on the tundra?
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