In addition, we have also investigated the MSY and MSTY policy in a traditional tri-trophic and four trophic food chain models. In generalist prey-predator system, harvesting of any one of the species at MSY level is always a sustainable policy, but harvesting of both the species at MSTY level may or may not be a sustainable policy. In particular, for traditional prey-predator system, fishing under combined harvesting effort at MSTY (if it exists) level may be a sustainable policy, but if MSTY does not exist then it is due to the extinction of the predator species only. In general it is observed that exploitation at MSY (of single species) or MSTY (of multispecies) level may cause the extinction of several species. This paper describes the possible impacts of maximum sustainable yield (MSY) and maximum sustainable total yield (MSTY) policy in ecosystems. Possible ecosystem impacts of applying maximum sustainable yield policy in food chain models. The North Sea mixed fisheries are a representative example Poos, Jan Jaap Rindorf, AnnaĪchieving single species maximum sustainable yield (MSY) in complex and dynamic fisheries targeting multiple species (mixed fisheries) is challenging because achieving the objective for one species may mean missing the objective for another. Brunel, Thomas Jardim, Ernesto Holmes, Steven J. Ulrich, Clara Vermard, Youen Dolder, Paul J.
Achieving maximum sustainable yield in mixed fisheries
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