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Wintering Swans Cygnus spp. and Coot Fulica atra in the Öresund, South Sweden, in relation to available food Resources.

  • Leif Nilsson
Publishing year: 2005
Language: English
Pages: 13-21
Publication/Series: Ornis Svecica
Volume: 15
Document type: Journal article
Publisher: Sveriges Ornitologiska Förening

Abstract english

In connection with the building of a Fixed Link (bridge –
artificial island – tunnel) between Sweden and Denmark
intensive studies of waterfowl and benthic fauna and flora
in the Öresund were undertaken as a part of the Environmental
Impact Assessment Study. This paper analysis
the occurrences of staging and wintering herbivores (i.e.
Mute Swan Cygnus olor and Coot Fulica atra) in relation
to available food resources. It was concluded that the
proportion of Zostera and Ruppia consumed by the birds
during September–March was about 10% of the available
standing crop in the autumn or less. During ice-periods
large parts of the available feeding areas are covered by
ice, and during an extended ice-period in 1995/1996 the
calculated food consumption for the ice-free areas was
of the same magnitude as the calculated standing crop
of food plants.


  • Zoology
  • Ecology


  • ISSN: 1102-6812
Leif Nilsson
E-mail: leif [dot] nilsson [at] biol [dot] lu [dot] se

Professor emeritus


+46 46 222 37 09

+46 70 525 57 09


Sölvegatan 37, Lund


Centre for Animal Movement Research
Evolutionary Ecology, Department of Biology
Ecology building S-223 62 Lund Sweden