Ecosystem-based management objectives for the North Sea: riding the forage fish rollercoaster

Dickey-Collas, M., Engelhard, G. H., Rindorf, A., Raab, K., Smout, S., Aarts, G., van Deurs, M., Brunel, T., Hoff, A., Lauerburg, R. A. M., Garthe, Stefan, Andersen, K. Haste, Scott, F., van Kooten, T., Beare, D. and Peck, M. A. (2014) Ecosystem-based management objectives for the North Sea: riding the forage fish rollercoaster Ices Journal of Marine Science, 71 (1). pp. 128-142.

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Abstract

The North Sea provides a useful model for considering forage fish (FF) within ecosystem-based management as it has a complex assemblage of FF species. This paper is designed to encourage further debate and dialogue between stakeholders about management objectives. Changing the management of fisheries on FF will have economic consequences for all fleets in the North Sea. The predators that are vulnerable to the depletion of FF are Sandwich terns, great skua and common guillemots, and to a lesser extent, marine mammals. Comparative evaluations of management strategies are required to consider whether maintaining the reserves of prey biomass or a more integral approach of monitoring mortality rates across the trophic system is more robust under the ecosystem approach. In terms of trophic energy transfer, stability, and resilience of the ecosystem, FF should be considered as both a sized-based pool of biomass and as species components of the system by managers and modellers. Policy developers should not consider the knowledge base robust enough to embark on major projects of ecosystem engineering. Management plans appear able to maintain sustainable exploitation in the short term. Changes in the productivity of FF populations are inevitable so management should remain responsive and adaptive.

Document Type: Article
Additional Information: Times Cited: 6 Dickey-Collas, Mark/A-8036-2008 0 6
Research affiliation: OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
ISSN: 1054-3139
Projects: Future Ocean
Date Deposited: 30 Mar 2015 12:08
Last Modified: 03 Nov 2016 12:34
URI: http://eprints.uni-kiel.de/id/eprint/27472

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