Eutrophication and its control by biomanipulation: An enclosure experiment

Tuzun I., Mason C.

HYDROBIOLOGIA, vol.331, no.1-3, pp.79-95, 1996 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 331 Issue: 1-3
  • Publication Date: 1996
  • Doi Number: 10.1007/bf00025410
  • Journal Name: HYDROBIOLOGIA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Agricultural & Environmental Science Database, Animal Behavior Abstracts, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Environment Index, Geobase, Pollution Abstracts, Public Affairs Index, Veterinary Science Database
  • Page Numbers: pp.79-95
  • Keywords: eutrophication, lake restoration, biomanipulation, trophic interactions, enclosure experiments, PHYTOPLANKTON COMMUNITY, HYPEREUTROPHIC LAKE, PLANKTIVOROUS FISH, PLANKTON COMMUNITY, SUBMERGED PLANTS, CLEAR-WATER, ZOOPLANKTON, SHALLOW, PREDATION, BIOMASS
  • Ankara University Affiliated: No

Abstract

Biomanipulation experiments were carried out in small enclosures in a small, shallow eutrophic lake in eastern England. The effects of fish removal on water quality and planktonic communities were examined in relation to nutrients and macrophytes. Exclusion of fish resulted in enhanced densities of the large-bodied Daphnia hyalina which, in turn, led to improvements in water quality. The provision of refuges from fish predation also enhanced Daphnia populations enough to suggest this strategy as feasible for the restoration of this lake. The development of a mysid population in enclosures without fish indicated that some indirect effects might occur if fish are completely removed.