Sustainability Assessment for Fishing Effects (SAFE): A new quantitative ecological risk assessment method and its application to elasmobranch bycatch in an Australian trawl fishery

Zhou, Shijie; Griffiths, Shane P.

doi:10.1016/j.fishres.2007.11.007

Cited by 99 publications

(85 citation statements)

References 54 publications

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“…This method has been successfully applied in situations where the majority of stocks are data deficient such as in fisheries certifications by the Marine Stewardship Council 1 , for fisheries management under the Magnuson Stevens Fishery Conservation and Management Act in the US (Cope et al 2011;Ormseth and Spencer 2011) and for management of bycatch species in Australia (Zhou and Griffiths 2008;Zhou et al 2009). Here, as a first step, a PSA on the deepwater fish community is presented to analyse the relative vulnerability of orange roughy in relation to other species of the mixed deepwater trawl fishery operated to the west of Ireland and Britain.…”

Section: Discussionmentioning

confidence: 99%

Assessing the risk of vulnerable species exposure to deepwater trawl fisheries: the case of orange roughyHoplostethus atlanticusto the west of Ireland and Britain

Dransfeld

Gerritsen

Hareide

et al. 2013

Aquat. Living Resour.

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-With slow growth rates, late maturity and a high maximum age of 100 years or more, orange roughy can be classified as a vulnerable deepwater fish species that can only sustain low rates of exploitation. Historical patterns of exploitation associated with this species suggest that it is currently not possible to manage its fisheries in the Northeast Atlantic sustainably, and the total allowable catch for orange roughy has been gradually reduced to zero for European fisheries since 2010. Orange roughy to the west of Ireland and Britain occurs on distinct bathymetric features (seamounts, hills and canyons) as well as on flat ground along the continental slope. Productivity-susceptibility analysis (PSA) was performed to evaluate the biological vulnerability of orange roughy in relation to other deepwater species and the risk that recent and current fisheries pose to its populations in the study area. Time-dependant PSA, based on the spatial overlap between orange roughy distribution and recent and current deepwater fisheries demonstrated a strong reduction in risk over time when fisheries stopped directed targeting practices and continued with mixed deepwater trawl fisheries. Some spatial overlap between the species and current fisheries remains, and while the method can show relative risk reduction, it cannot provide information on whether the risk is low enough to allow the recovery of depleted populations.

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Section: Discussionmentioning

confidence: 99%

Assessing the risk of vulnerable species exposure to deepwater trawl fisheries: the case of orange roughyHoplostethus atlanticusto the west of Ireland and Britain

Dransfeld

Gerritsen

Hareide

et al. 2013

Aquat. Living Resour.

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“…Although such assessments are data intensive and, therefore, costly to implement, they allow management strategy evaluations to explore outcomes for fishery and population sustainability objectives. Alternatively, cost-effective methods for assessing all species that a fishery interacts with, such as the quantitative ecological sustainability assessment for fishing effects developed by Zhou and Griffiths (2008), may be more appropriate for wahoo and other byproduct and bycatch species. Although wahoo may still be considered a low-priority species for most commercial fisheries, their steadily increasing catches worldwide may require species-specific management in the future.…”

Section: Future Directionsmentioning

confidence: 99%

Per-recruit stock assessment of wahoo (Acanthocybium solandri) in the southwest Pacific Ocean

Zischke¹,

Griffiths²

2015

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Abstract-A stock assessment incorporating sensitivity in biological parameters and potential fishery management strategies for wahoo (Acanthocybium solandri) in the southwest Pacific Ocean was undertaken to assess the stock status of this species for [2008][2009][2010]. Selectivity probabilities at age were similar for 2 commercial longline fisheries and a recreational sport fishery. However, the median exploited length and age were slightly higher in the commercial fisheries than in the recreational fishery. Current fishing mortality (F current ) was predicted to be lower than limit and target reference points, with the exception that F current exceeded the target reference point F SSB40 (fishing mortality at which the spawning stock biomass per recruit [SSB/R] is 40% of the SSB/R at F=0). This result indicates that wahoo may be at a greater risk of recruitment overfishing than of growth overfishing. Of the fishery management scenarios tested, introduction of a slot limit in the recreational fishery had the greatest effect on assessment results; however, this effect was relatively minor and may not be practical to implement. Given the relatively short life span of wahoo, ongoing biological monitoring and rigorous collection of catch and effort data may facilitate continued assessment of this species in the southwest Pacific Ocean.

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“…Because of the cost of assessment, risk-based approaches have been developed to assess ecological risk from fishing and prioritise management responses (Fletcher 2005;Smith et al 2007b;Zhou and Griffiths 2008;Hobday et al 2011). These approaches underpin the ecosystem-based fisheries management (EBFM) approach in Australia and derive from the implicit embedding of risk assessments in fisheries management.…”

Section: Risk-assessment Approaches To Climatementioning

confidence: 99%

Modelling climate-change effects on Australian and Pacific aquatic ecosystems: a review of analytical tools and management implications

Plagányi

Bell

Bustamante

et al. 2011

Mar. Freshwater Res.

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Climate change presents significant challenges to modelling and managing aquatic resources. Equilibrium assumptions common in many modelling approaches need to be replaced by formulations that allow for changing baselines and integration of ongoing changes and adaptations by species, ecosystems and humans. As ecosystems change, so will the ways humans use, monitor and manage them. Consequently, adaptive management loops and supporting tools deserve more prominence in the management toolbox. Models are critical tools for providing an early understanding of the challenges to be faced by integrating observations and examining possible solutions. We review modelling tools currently available to incorporate the effect of climate change on marine and freshwater ecosystems, and the implications for management of natural resources. System non-linearity can confound interpretations and hence adaptive management responses are needed that are robust to unexpected outcomes. An improvement in the ability to model the effects of climate change from a social and economic perspective is necessary. The outputs from ‘end-to-end’ and socio-ecological models can potentially inform planning, in both Australia and the Pacific region, about how best to build resilience to climate change. In this context, the importance of well directed data-collection programs is also emphasised. Lessons from this region, which is advanced with regard to modelling approaches, can guide increased use of models to test options for managing aquatic resources worldwide.

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Sustainability Assessment for Fishing Effects (SAFE): A new quantitative ecological risk assessment method and its application to elasmobranch bycatch in an Australian trawl fishery

Cited by 99 publications

References 54 publications

Assessing the risk of vulnerable species exposure to deepwater trawl fisheries: the case of orange roughyHoplostethus atlanticusto the west of Ireland and Britain

Assessing the risk of vulnerable species exposure to deepwater trawl fisheries: the case of orange roughyHoplostethus atlanticusto the west of Ireland and Britain

Per-recruit stock assessment of wahoo (Acanthocybium solandri) in the southwest Pacific Ocean

Modelling climate-change effects on Australian and Pacific aquatic ecosystems: a review of analytical tools and management implications

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