Regional trade-offs from multi-species maximum sustainable yield (MMSY) management options.

Voss, Rüdiger, Quaas, Martin, Schmidt, Jörn and Hoffmann, Julia (2014) Regional trade-offs from multi-species maximum sustainable yield (MMSY) management options. Marine Ecology Progress Series, 498 . pp. 1-12. DOI 10.3354/meps10639 .

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Abstract

The maximum sustainable yield (MSY) is, theoretically, the largest yield that can be taken from a single species' stock over an indefinite period. Formulation of strategic MSY management goals is, however, complicated by the need to move beyond biological single-species considerations. Interactions among species necessitate multispecies (MMSY) definitions, incorporating ecological, economic and social considerations. We developed an ecological-economic model of the Baltic Sea, simulating stock dynamics of interacting populations of cod Gadus morhua, herring Clupea harengus and sprat Sprattus sprattus. We investigated a set of different strategic management options. These likely, yet non-formalized experiments evaluate and illuminate alternative regional trade-offs. We computed multi-species maximum economic yield (MMEY) under certain eco-logical constraints, with profits as a performance indicator. An unconstrained profit-maximizing management strategy would lead to a highly profitable cod fishery in a cod-dominated ecosystem. Concurrent sprat stock size (and profits) would be low, falling below ecological precautionary reference points. Consideration of ecological constraints on minimum stock sizes leaves a range of strategies, including the change from a cod-dominated to a more clupeid-dominated system. The regional distribution of profits depends on the management. Therefore, adjustment payments or other forms of compensation might be needed to achieve a concordant agreement on strategic multi-species management goals.

Document Type: Article
Research affiliation: Kiel University > Kiel Marine Science
Kiel University
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > The Future Ocean - Cluster of Excellence > FO-R03
OceanRep > The Future Ocean - Cluster of Excellence > FO-R02
OceanRep > The Future Ocean - Cluster of Excellence > FO-R06
UNSPECIFIED
OceanRep > The Future Ocean - Cluster of Excellence > FO-R01
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.3354/meps10639
ISSN: 0171-8630
Projects: Future Ocean, MYFISH
Date Deposited: 30 Mar 2015 12:50
Last Modified: 02 Feb 2018 11:50
URI: http://oceanrep.geomar.de/id/eprint/28285

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