title: Use of fish species from different trophic levels to control algae and water quality: An enclosure experiment in eutrophic area of Xiaojiang River.
abstract: The effects of stocking both filter-feeding fish and piscivorous fish were compared to the effects of stocking only filter-feeding fish for suppressing algal blooms and improving water quality in the impoundment area of Xiaojiang River where catfish were dominant. Using only filter-feeding fish for algal suppression and water quality control was more effective in the short-term, but use of both filter-feeding fish and piscivorous fish was better in the long-term. Obvious suppression of phytoplankton biomass (PB) only occurred during the first 14 days regardless of the fish stocked. Adding fish to the enclosure clearly alters phytoplankton community structure and introducing piscivorous fish to an enclosure stocked with filter-feeding fish changed the relative densities of dominant algae species. While stocking filter-feeding fish decreased total nitrogen concentration by removing phytoplankton, it did not effectively decrease total phosphorus and Chlorophyll a concentrations. Introducing piscivorous fish to the enclosure weakened the relationship between nutrients and phytoplankton. Results indicate that stocking only filter-feeding fish to improve water quality and suppress phytoplankton in an impoundment area is insufficient and other technologies and means should be applied simultaneously.
authors.affiliation: Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, China.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan, China.
authors.forename: Lian
authors.initials: L
authors.lastname: Hu
authors.affiliation: Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, China.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, China.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan, China.
authors.forename: Xiaojie
authors.initials: X
authors.lastname: Pan
authors.affiliation: Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, China.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan, China.
authors.forename: Na
authors.initials: N
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, China.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan, China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Peng
authors.affiliation: Key Laboratory of Ministry of Water Resources for Ecological Impacts of Hydraulic-projects and Restoration of Aquatic Ecosystem, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan, China.|Hubei Provincial Collaborative Innovation Center for Water Resources Security, Wuhan, China.
authors.forename: Chengyan
authors.initials: C
authors.lastname: Wan
mesh_terms: D000818:Animals; D018533:Biomass; D002681:China; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D005399:Fishes / Q000502:physiology*; D010100:Oxygen / Q000032:analysis; D000459:Phaeophyceae / Q000254:growth & development* / Q000378:metabolism; D010758:Phosphorus / Q000032:analysis; D010839:Phytoplankton / Q000254:growth & development / Q000378:metabolism; D045483:Rivers / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D060753:Water Quality
chemical_list: D014867:Water; D002734:Chlorophyll; D010758:Phosphorus; D010100:Oxygen; D000077194:Chlorophyll A