Evaluating management strategies for marine mammal populations: An example for multiple species and multiple fishing sectors in Iceland

André E. Punt*, Margaret Siple, Guðjón Már Sigurðsson, Gísli Víkingsson, Tessa B. Francis, Sandra M. Granquist, Philip S. Hammond, Dennis Heinemann, Kristy J. Long, Jeffrey E. Moore, Maritza Sepúlveda, Randall R. Reeves, Paul R. Wade, Rob Williams, Alexandre N. Zerbini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A management strategy evaluation (MSE) is used to estimate success at achieving conservation goals for marine mammals while also aiming to minimize impacts on commercial fisheries. It is intended to improve understanding of US import rules that require countries exporting fish and fish products to the USA to adhere to marine mammal bycatch standards “comparable” to those used by the USA. The MSE framework is applied, for illustrative purposes, to export fisheries in Iceland that impact harbor porpoises (Phocoena phocoena), harbor seals (Phoca vitulina), and grey seals (Halichoerus grypus). Several management strategies are evaluated. The harbor porpoise population is estimated to be close to or above its maximum net productivity level (MNPL) and, according to the model, will continue to increase even if current levels of human-caused mortality are unchanged. In contrast, the grey seal and harbor seal populations are below MNPL, and bycatch mortality in the lumpfish (Cyclopterus lumpus) fishery will need to be reduced to allow them to recover to MNPL.

Original languageEnglish
Pages (from-to)1316-1331
Number of pages16
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume77
Issue number8
DOIs
Publication statusPublished - 4 Apr 2020

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