Hake species (Merluccius capensis and M. paradoxus) assessment in the Benguela Current Large Marine Ecosystem
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- 作者：Johannes N. Kathenaa ; b ; John.Kathena@mfmr.gov.na" class="auth_mail" title="E-mail the corresponding author ; Anders Nielsenb ; Uffe Hø ; gsbro Thygesenb ; Casper W. Bergb
- 关键词：Stock assessment State-space models ; Catch-at-age ; Spawning stock biomass ; Fishing mortality
- 刊名：Environmental Development
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：17
- 期：supp_S1
- 页码：193-201
- 全文大小：1035 K
文摘
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Combined-species assessment does not completely capture the underlying process of the two stocks.
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Combined-assessment estimates a higher spawning stock biomass, than the sum of separated species assessment added together.
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Separate-species assessment shows an increase in spawning stock biomass of M. capensis, and a decrease in M. paradoxus in the last five years, which is impossible to observe in the combine-species assessment.
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Fishing mortality on M. paradoxus has been relatively higher than on M. capensis.