Abstract: The fisheries manipulation strategies were surveyed in lakes and reserviors with various trophic types, basin morphology,and nutrient input rhythm to inhibit and restore eutrophications in lakes and reservoirs.The statistic data collected from some reservoirs and lakes indicate that long food chain piscivorous fish and indigenous fish should be protected to increase the biodiversties in oligotrophic waters with less non-point pollution and nutrient input.Omnivores are stocked into the waters as eutrophication become more and more serious,and ratio of filtering feeder to benthivorous fish should be controlled mainly depending on water depth and area,instead of exaggeration of the algae removal effect by filter feeding fishes in all waters.Especially,benthivorous fish should be stocked more to remove algae in shallow lakes by swallowing and scraping the algae that are adhered by lake basins.In ultra eutrophic lakes,the restoration must be carried out by omnivorous fish together with increase of the water heterogeneity such as implanting refuges for zooplankton in order to improve biodiversity and fish production,or increase in the rate of nutrients being concentrated and unloaded from the waters.It is first suggested that fence segmentation be conducted in shallow and large eutrophic waters so that a large ecosystem is divided into small ecosystem landscape complexes that depend on each other.
2017, Vol. 32 
