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03.05.2019

Winter fieldwork in Varanger, Finnmark and Svalbard

Several COAT modules both in Varnger, Finnmark and in Svalbard have carried out winter fieldwork in March and April. Mainly focusing on the snow pack and its properties.

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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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19.11.2018

First recording of a breeding introduced arctic fox on Varanger Peninsula

Screening of the photos from trail cameras has just revealed that one arctic fox litter was born on Varanger Peninsula this summer.

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06.11.2018

Weather stations up and running!

We proudly announce that the first three COAT weather stations at the Varanger peninsula are now installed. They started transmitting data during the first week of October. The stations are located in the birch forest in Bergebydalen (150 masl), in the tall shrub zone in Torvhaugdalen (268 masl) and at the top of Reinhaugen (470 masl). Links...

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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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20.03.2018

Winter fieldwork in COAT

March and April are the months for winter fieldwork in COAT. The yearly monitoring of snow conditions have been conducted in Varanger, and automatic acustic recorders to monitor ptarmigans have been mounted at Svalbard.

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15.02.2018

A new management action implemented in COAT Varanger Arctic fox module

On February 13, twenty-seven captive bred arctic foxes were released on the Varanger Peninsula as a new management action to prevent extinction of the species in northernmost Fennoscandia.

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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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05.12.2017

Salvage logging of mountain birch after moth outbreaks

Outbreaks of defoliating geometrid moths have damaged thousands of square kilometres of mountain birch forest in northern Scandinavia during the last two decades. Salvage logging of damaged mountain birch stands has been discussed as a means of speeding up the regeneration of the forest.

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22.11.2017

Reindeer keep shrubs in a browse trap

In a recently published paper in Ecological Applications, COAT researchers Bråthen & Ravolainen and colleagues show how reindeer management controls the climate-sensitive tundra state transition from open tundra grasslands to shrublands.

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