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Predicting the impact of Lake Biomanipulation based on food-web modeling--Lake Kinneret as a case study

Ofir, E. ; Heymans, J.J. ; Shapiro, J. ; Goren, M. ; Spanier, E. ; Gal, G.

Ecological Modelling, March 24, 2017, Vol.348, p.14 [Periódico revisado por pares]

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  • Título:
    Predicting the impact of Lake Biomanipulation based on food-web modeling--Lake Kinneret as a case study
  • Autor: Ofir, E. ; Heymans, J.J. ; Shapiro, J. ; Goren, M. ; Spanier, E. ; Gal, G.
  • Assuntos: Tool Industry – Case Studies ; Tool Industry – Analysis
  • É parte de: Ecological Modelling, March 24, 2017, Vol.348, p.14
  • Descrição: To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link: http://dx.doi.org/10.1016/j.ecolmodel.2016.12.019 Byline: E. Ofir [ofiree@gmail.com] (a,*), J.J. Heymans [sheilaheymans@yahoo.com] (b), J. Shapiro [Jamess@moag.gov.il] (c), M. Goren [gorenm@tauex.tau.ac.il] (d), E. Spanier [spanier@research.haifa.ac.il] (e), G. Gal [gal@ocean.org.il] (a) Keywords Biomanipulation; Lake; Food-web model; Management; Scenarios ecosim Abstract Biomanipulation is a tool decision makers use to achieve desirable management goals. In lakes, one of the most common goals is the improvement of water quality, an objective that can be achieved mainly by reducing the amount of phytoplankton in the water. Although it is a very clear goal that is achievable by using actions that affect the phytoplankton biomass, experience shows that primary biomanipulation goals are rarely achieved. A biomanipulation program was conducted in Lake Kinneret over a 12-year period with the goal of improving water quality by reducing the population of the dominant fish species in the lake. However, the biomanipulation failed to achieve the goal and the program was stopped. We used Ecopath with Ecosim (EwE) scenarios to examine the effect of biomanipulation on the ecosystem. The results of these scenarios show that biomanipulation actions, such as those used in the lake, indeed fail to improve water quality; furthermore, they will actually increase the amount of phytoplankton in the water and decrease water quality. The development of the method described in the present article provides managers with the means to evaluate the effect of biomanipulation on an ecosystem. This method enables researches to conduct a pre-action analysis of the planned measures and examine whether the goal can be achieved, saving money and time and preventing damage to the ecosystem. Author Affiliation: (a) Yigal Alon Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, PO Box 447, Migdal 14950, Israel (b) SAMS, Scottish Marine Institute,Oban PA371QA, Scotland, United Kingdom (c) Department of Fisheries, Ministry of Agriculture, Tiberias, Israel (d) Department of zoology and the Steinhardt Museum of Natural History, Tel-Aviv University, Israel (e) Department of Maritime Civilizations, and the Leon Recanati Institute for Maritime Studies, The Leon H. Charney School for Marine Sciences, University of Haifa, Mount Carmel, Haifa 34988-38, Israel * Corresponding author. Article History: Received 6 June 2016; Revised 29 December 2016; Accepted 31 December 2016
  • Idioma: Inglês

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