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Ib Krag Petersen

Bird distributions in parts of the Danish North Sea and in Kattegat, autumn 2019: A cruise report

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

OriginalsprogEngelsk
UdgivelsesstedAarhus
ForlagAarhus University, DCE - Danish Centre for Environment and Energy
Antal sider14
Rekvirerende organThe Danish Energy Agency
StatusUdgivet - 2019
SerietitelResearch note from DCE - Danish Centre for Environment and Energy

Bibliografisk note

In August 2019 DCE, Aarhus University contracted the Danish Energy
Agency to conduct surveys of birds in two predefined Danish marine areas.
This contract was an extension of a similar contract for aerial surveys of birds
in the same areas between December 2018 and April 2019 (Petersen & Sterup
2019). One area was between the north coast of Sjælland, northwards to Anholt,
eastwards to the Swedish/Danish EEZ border and westwards to Sjællands
Odde. The other area was west of Jutland, from the coast approximately
70 km westwards, southwards to ca. 15 km north of Blåvandshuk and northwards
to the western entrance of Limfjorden.
At each site, three aerial surveys of birds was scheduled between September
and December 2019. Of these, two surveys were conducted at each of the two
sites. The third survey was cancelled due to weather conditions. The aerial
surveys were conducted as line transect sampling counts, performed along
predefined transect lines.
In this report, we present data from the four surveys. The report presents the
number of observed birds by species or species group and their geographical
distribution. Estimation of total numbers of the bird species are not presented
here, according to the tender from the Energy Agency.
In both survey areas the bird community was dominated by marine species
as for instance diver (primarily Red-throated Diver), Gannets, Herring Gull,
Great Black-backed Gull, Kittiwake, Razorbill and Common Guillemot. In the
coastal and shallow areas of both survey areas a number of diving ducks were
recorded, mainly Common Eider and Common Scoter.
This report does not attempt to assess the potential effects or impacts from
offshore wind farms on the bird communities in the two study areas.

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