Risk-based weight of evidence assessment of commercial sharks in western Australia

被引：9

作者：

Braccini, Matias ^{[1
]}

Hesp, Alex ^{[1
]}

Molony, Brett ^{[2
]}

机构：

[1] Dept Primary Ind & Reg Dev, Hillarys, WA 6025, Australia

[2] Univ Western Australia, Indian Ocean Marine Res Ctr, CSIRO Oceans & Atmosphere, Perth, WA 6009, Australia

来源：

OCEAN & COASTAL MANAGEMENT | 2021年 / 205卷

关键词：

Fishing impacts; Risk-based; Weight of evidence assessment; EBFM; REPRODUCTIVE-BIOLOGY; FURGALEUS-MACKI; WHISKERY SHARK; MANAGEMENT; RESOURCES; FISHERIES; IMPACTS; MODEL;

D O I：

10.1016/j.ocecoaman.2020.105501

中图分类号：

P7 [海洋学];

学科分类号：

0707 ;

摘要：

Sharks are generally taken in multispecies fisheries worldwide so in many cases it is logistically infeasible and cost prohibitive to assess the impact on all species caught. Risks of fishing impacts to the sustainability of shark species were assessed using a weight of evidence risk-based framework. Whiskery (Furgaleus macki), gummy (Mustelus antarcticus), dusky (Carcharhinus obscurus), and sandbar (C. plumbeus) sharks provide a good case study as they are the main (similar to 80% of the catch) shark species taken in Western Australia (WA) and represent the range of life history strategies of other shark species typically caught. Based on the available lines of evidence for stock status (spatial and temporal time series of catch, effort, catch rates, size composition and population modelling), the 2015-16 risk level for the four species was scored as medium-i.e. it is unlikely (5-20% chance) that there is a high level of stock depletion. The status of each of the four species was scored as 'acceptable' with risk control measures in place, indicating that no additional restrictions are required.

引用

页数：11

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