DOI: 10.1016/j.watres.2018.09.007
Scopus记录号: 2-s2.0-85053385718
论文题名: Successful restoration of a tropical shallow eutrophic lake: Strong bottom-up but weak top-down effects recorded
作者: Liu Z. ; Hu J. ; Zhong P. ; Zhang X. ; Ning J. ; Larsen S.E. ; Chen D. ; Gao Y. ; He H. ; Jeppesen E.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 146 起始页码: 88
结束页码: 97
语种: 英语
英文关键词: Biomanipulation
; Implantation of macrophytes
; Lake restoration
; Tropical lake
Scopus关键词: Economics
; Fish
; Nutrients
; Plankton
; Restoration
; Suspended sediments
; Tropics
; Biomanipulation
; Crustacean zooplankton
; Lake restoration
; Long-term perspective
; Macrophytes
; Nutrient concentrations
; Submerged macrophytes
; Tropical lakes
; Lakes
; aquaculture production
; biomanipulation
; concentration (composition)
; crustacean
; disturbance
; fish
; habitat restoration
; inorganic matter
; lacustrine environment
; macrophyte
; phytoplankton
; phytoplasma
; predation
; restoration ecology
; stocking density
; temperate environment
; transplantation
; trophic cascade
; turbidity
; zooplankton
; China
; Guangdong
; Hangzhou
; Huizhou
; West Lake [Hangzhou]
; Zhejiang
; Crustacea
英文摘要: Fish manipulation has been used to restore lakes in the temperate zone. Often strong short-term cascading effects have been obtained, but the long term-perspectives are less clear. Fish manipulation methods are far less advanced for warm lakes, and it is debatable whether it is, in fact, possible to create a trophic cascade in warm lakes due to the dominance and high densities of fast-reproducing omnivorous fish. However, removal of benthic feeding fish also reduce disturbance of the sediment, which not only affects the nutrient level but also the concentration of suspended organic and inorganic matter with enhanced water clarity and potentially better growth conditions for submerged macrophytes. We conducted a biomanipulation experiment in one of the basins in Chinese Huizhou West Lake that have remained highly turbid after extensive nutrient loading reduction. Another basin was used as control (control-treatment pairing design). Removal of a substantial amount of plankti-benthivorous fish was followed by planting of submerged macrophytes and stocking of piscivorous fish. We found strong and relatively long-lasting effects of the restoration initiative in the form of substantial improvements in water clarity and major reductions in nutrient concentrations, particularly total phosphorus, phytoplankton and turbidity, while only minor effects were detected for crustacean zooplankton grazers occurring in low densities before as well as after the restoration. Our results add importantly to the existing knowledge of restoration of warm lakes and are strongly relevant, not least in Asia where natural lakes frequently are used extensively for fish production, often involving massive stocking of benthivorous fish. With a growing economy and development of more efficient fish production systems, the interest in restoring lakes is increasing world-wide. We found convincing evidence that fish removal and piscivores stocking combined with transplantation of submerged macrophytes may have significant effects on water clarity in warm shallow lakes even if the zooplankton grazing potential remains low, the latter most likely as a result of high predation on the zooplankton. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112393
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, Guangdong 510632, China; State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Sino-Danish Centre for Education and Research (SDC), University of Chinese Academy of Sciences, Beijing, China; Department of Bioscience and Arctic Centre, Aarhus University, Denmark; Greenland Climate Research Centre (GCRC), Greenland Institute of Natural Resources, Kivioq 2, P.O. Box 570 3900, Nuuk, Greenland
Recommended Citation:
Liu Z.,Hu J.,Zhong P.,et al. Successful restoration of a tropical shallow eutrophic lake: Strong bottom-up but weak top-down effects recorded[J]. Water Research,2018-01-01,146