Interactions between fisheries and birds in IJsselmeer, The Netherlands

P.J. Mous

Research output: Thesisinternal PhD, WU

Abstract

<p>IJsselmeer, a eutrophic, shallow lake (mean depth 4 m) of 180,000 ha, is heavily exploited by a fishery that catches dfl 11 million worth of eel <em>Anguilla anguilla</em> , perch <em>Perca fluviatilis</em> , pikeperch <em>Stizostedion lucioperca</em> and of the small zooplanktivorous smelt <em>Osmerus eperlanus,</em> the main prey for perch and pikeperch and for the piscivorous birds of IJsselmeer. The population of cormorant <em>Phalacrocorax carbo</em> affects the fisheries through its predation on perch and pikeperch, whereas black tern <em>Chlidonias niger</em> and black-headed gull <em>Larus ridibundus</em> are affected by the availability of smelt in IJsselmeer. The spatial distribution of prey fish and piscivorous birds was described as a function of spatial scale, water transparency and water depth. The carrying capacity of IJsselmeer for the production of prey fish was assessed, and a dynamic simulation model was constructed to predict consequences of fishery management measures on the fisheries and on the food availability for piscivorous birds.</p>
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
Supervisors/Advisors
  • Huisman, E.A., Promotor
  • Machiels, M.A.M., Promotor, External person
  • Rijnsdorp, Adriaan, Promotor
Award date21 Jan 2000
Place of PublicationS.l.
Print ISBNs9789058081834
Publication statusPublished - 2000

Keywords

  • fisheries
  • fish
  • birds
  • lake ijssel

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