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Ib Krag Petersen

Number and distribution of birds in and around two potential offshore wind farm areas in the Danish North Sea and Kattegat

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

OriginalsprogEngelsk
UdgivelsesstedAarhus
ForlagAarhus University, DCE - Danish Centre for Environment and Energy
Antal sider40
ISBN (Trykt)978-87-7156-413-6
StatusUdgivet - 2019
SerietitelScientific Report from DCE - Danish Centre for Environment and Energy
Nummer327

Bibliografisk note

The Danish Energy Agency requested a total of ten surveys of birds conducted in two<br/>areas of interest in the North Sea and in Kattegat, five surveys in each area. The surveys<br/>were conducted as aerial line transect surveys from December 2018 until April 2019.<br/>This publication reports the findings of the surveys. Relevant bird species for each of<br/>the two areas are described, and thematic maps are presented. In compliance with<br/>the contract this publication does solely present the distribution of the observed birds.<br/>No estimation of total numbers has been performed under this contract.<br/>The dominant bird species found in the two survey areas were Gannets and<br/>Razorbills/Guillemots. In both survey areas these bird species were found in high<br/>numbers, both inside and outside the area of interest for offshore wind farms. Diving<br/>ducks, as for instance Common Scoter, were found in low numbers.<br/>Red-throated Diver/Black-throated Diver was found in concentrations in the North<br/>Sea survey area particularly, and to a less extent in the Kattegat survey area.<br/>Densities of divers were lower in the area of interest for the offshore wind farms. Since<br/>divers are known to be displaced by offshore wind farms out to more than 15 km, the<br/>displacement effect of these birds may be reduced by careful considerations of the<br/>actual positioning of potential wind farms.

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