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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/12/05 18:09:36」(JST)

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Biomanipulation is the deliberate alteration of an ecosystem by adding or removing species, especially predators.

Aquatic ecosystems

Changing the fish population of bodies of water as a part of watershed management can facilitate desirable changes in aquatic ecosystems suffering from eutrophication characterized by domination by phytoplankton aiding ecosystem restoration, an application of restoration ecology. In ponds or lakes alternative stable conditions, one with high algae populations, little other plant life, and turbid water, another with low algae populations, a diverse plant population, and clear water, may exist. In addition to prevention of excess nutrients such as phosphorus and nitrates, removal of certain fish species adapted to turbid water may facilitate change from one steady state to the other, an application of dynamical systems theory.^[1] Fish species may be removed by means of poison, harvesting, or introduction of predatory species. As a different fish community will result from the process it will affect recreational and commercial fishermen whose cooperation or opposition is important.^[2]

radix peregra var. ovata

Lake Zwemlust, a hypertrophic pond used as a swimming pool in The Netherlands with an area of 1.5 hectares and an average depth of 1.5 meters, was treated in March 1987. The initial Secchi disk transparency was only .3 meters, less than the 1 meter maximum permitted for swimming pools in The Netherlands. In the first summer Secchi disk transparency increased to at least 2.5 meters, the maximum depth of the lake.^[3] The lake was drained and 1,500 kilograms of planktivorous and benthivorous fish such as common bream were removed by seining and electrofishing. The pond was stocked with 1500 northern pike fingerlings and some mature rudd whose offspring served as food for the pike. Willow branches, nuphar lutea roots, and starts of chara globularis were added as vegetation and shelter.^[4] Expenses were met by the local water authority which was compensated by increased patronage by swimmers.^[2] In the summer of the second year, 1988, there was considerable plant growth and, possibly due to lack of predation by carp or minnows, an explosion in the number of snails, including radix peregra var. ovata a host of trichobilharzia ocellata the cause of schistosome dermatitis, swimmer's itch. In addition to grazing by zooplankton the lush growth of macrophytes removed sufficient nutrients from the water to prevent algal bloom by phytoplanktons.^[3]

Notes

^ Guterl, Fred (2012-07-20). "Searching for Clues to Calamity". The New York Times.
^ ^a ^b Eddy H.R.R. Lammens (2001). "Consequences of biomanipulation for fish and fisheries." (PDF). FAO Fisheries Circular (Food and Agriculture Organization) (952): 23. ISSN 0429-9329. Retrieved July 21, 2011.
^ ^a ^b Van Donk, E.; R. D. Gulati; M. P. Grimm; M. P. Grimm (1989). "Food web manipulation in Lake Zwemlust: Positive and negative effects during the first two years". Aquatic Ecology 23 (1): 19–34. doi:10.1007/BF02286424. Retrieved July 21, 2012.
^ Van Donk, E; R. D. Gulati; M. P. Grimm (1990). "Restoration by biomanipulation in a small hypertrophic lake: first-year results". Hydrobiologia 191 (1): 285–295. doi:10.1007/BF00026064.

External links and further reading

Petr, T. (2000). "Interactions Between Fish and Aquatic Macrophytes in Inland waters: a review". FAO Fisheries Technical Paper (396): 51. ISBN 92-5-104453-8.
Hansson, L.-A.; Brönmark, C. (2010). "Biomanipulation of Aquatic Ecosystem". In Likens, Gene E. Lake Ecosystem Ecology. Academic Press.
Ansari, Abid A. (2011). Eutrophication: Causes, Consequences and Control. Springer. p. 297.
Hoare, Dan; Phillips, Geoff; Perrow, Martin (March 2008). "Review of Biomanipulation". Norwich: Broads Authority.
Meijer, Marie-Louise; de Boois, Ingeborg; Scheffer, Marten; Portielje, Rob; Hosper, Harry (August 1999). "Biomanipulation in shallow lakes in The Netherlands: an evaluation of 18 case studies" (PDF). Hydrobiologia. 408/409: 13–30. doi:10.1023/A:1017045518813.
Angeler, David G.; Chow-Fraser, Patricia; Hanson, Marka; Sanchez-Carrillo, Salvador; Zimmer, Kype D. (December 2003). "Biomanipulation: a useful tool for freshwater wetland mitigation?" (PDF). Freshwater Biology 48 (12): 2203–2213. doi:10.1046/j.1365-2427.2003.01156.x.

English Journal

Geo-engineering experiments in two urban ponds to control eutrophication.

Waajen G1, van Oosterhout F2, Douglas G3, Lürling M4.
Water research.Water Res.2015 Dec 15. pii: S0043-1354(15)30396-1. doi: 10.1016/j.watres.2015.11.070. [Epub ahead of print]
Many urban ponds experience detrimental algal blooms as the result of eutrophication. During a two year field experiment, the efficacy of five in situ treatments to mitigate eutrophication effects in urban ponds was studied. The treatments targeted the sediment phosphorus release and were intended t
PMID 26725204

Combined effect of predatory zooplankton and allelopathic aquatic macrophytes on algal suppression.

Zuo S1, Wan K, Ma S.
Environmental technology.Environ Technol.2015 Jan-Feb;36(1-4):54-9. doi: 10.1080/09593330.2014.936520. Epub 2014 Jul 10.
The present study evaluated the combined effects of four typical predatory zooplankton and allelopathic aquatic macrophytes on algal control in a microcosm system. It would determine the effects of diverse species and biological restoration on the growth of harmful water-bloom microalgae in great la
PMID 25409583

Phytoplankton Composition and Abundance in Restored Maltański Reservoir under the Influence of Physico-Chemical Variables and Zooplankton Grazing Pressure.

Kozak A1, Gołdyn R1, Dondajewska R1.
PloS one.PLoS One.2015 Apr 23;10(4):e0124738. doi: 10.1371/journal.pone.0124738. eCollection 2015.
In this paper we present the effects of environmental factors and zooplankton food pressure on phytoplankton in the restored man-made Maltański Reservoir (MR). Two methods of restoration: biomanipulation and phosphorus inactivation have been applied in the reservoir. Nine taxonomical groups of phyt
PMID 25906352