Evaluating effectiveness of time/area closures, quotas/caps, and fleet communications to reduce fisheries bycatch

O’Keefe, Catherine E.; Cadrin, Steven X.; Stokesbury, Kevin D. E.

doi:10.1093/icesjms/fst063

Cited by 103 publications

(92 citation statements)

References 58 publications

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“…Decreasing discards has been put forward as one of the main reform challenges of the Common Fisheries Policy (CFP) of the European Union (Morandeau et al 2014), but designing effective bycatch mitigation programmes requires, among others, an understanding of the life histories of target and non-target species (O'Keefe et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

Neves¹

2015

Acta Ichthyol. Piscat.

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Section: Discussionmentioning

confidence: 99%

Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

Neves¹

2015

Acta Ichthyol. Piscat.

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“…Although this effort represented a major step forward in considering the utility of dynamic management measures, it did not incorporate many of the aspects of what it might mean for a closure to be "dynamic" (e.g., near real-time closures based on contemporaneous conditions). A study comparing dynamic and static measures by O'Keefe et al (43) evaluates the effectiveness of time/area closures, quotas/caps, and fleet communication to reduce fisheries bycatch against a set of five criteria. Evaluation criteria include "(1) reduced identified bycatch or discards, (2) no or minimal negative effect on the catch of target species, (3) no or minimal negative effect on the catch of other nontarget species or sizes, (4) no or minimal spatial or temporal displacement of bycatch, and (5) economically viable for the fisher."…”

Section: Evaluation Of Static Vs Dynamic Management Measuresmentioning

confidence: 99%

Dynamic ocean management increases the efficiency and efficacy of fisheries management

Dunn

Maxwell

Boustany

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

174

123

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In response to the inherent dynamic nature of the oceans and continuing difficulty in managing ecosystem impacts of fisheries, interest in the concept of dynamic ocean management, or realtime management of ocean resources, has accelerated in the last several years. However, scientists have yet to quantitatively assess the efficiency of dynamic management over static management. Of particular interest is how scale influences effectiveness, both in terms of how it reflects underlying ecological processes and how this relates to potential efficiency gains. Here, we address the empirical evidence gap and further the ecological theory underpinning dynamic management. We illustrate, through the simulation of closures across a range of spatiotemporal scales, that dynamic ocean management can address previously intractable problems at scales associated with coactive and social patterns (e.g., competition, predation, niche partitioning, parasitism, and social aggregations). Furthermore, it can significantly improve the efficiency of management: as the resolution of the closures used increases (i.e., as the closures become more targeted), the percentage of target catch forgone or displaced decreases, the reduction ratio (bycatch/catch) increases, and the total time-area required to achieve the desired bycatch reduction decreases. In the scenario examined, coarser scale management measures (annual time-area closures and monthly full-fishery closures) would displace up to four to five times the target catch and require 100-200 times more square kilometer-days of closure than dynamic measures (gridbased closures and move-on rules). To achieve similar reductions in juvenile bycatch, the fishery would forgo or displace between USD 15-52 million in landings using a static approach over a dynamic management approach.dynamic ocean management | real-time management | ecosystem-based fisheries management | spatiotemporal | bycatch A lthough traditional fisheries management has focused on assessing the health of individual fish stocks, there has been a strong trend over the past two decades toward the incorporation of ecosystem components into fisheries management (1, 2). Ecosystem-based fisheries management (EBFM) seeks to meet multiple, potentially conflicting goals across ecological, economic, and social objectives (3, 4). Meeting these goals is made more complex in marine ecosystems due to the inherent dynamic nature of the oceans. In response to continuing difficulty in managing the ecosystem impacts of fisheries in a highly dynamic environment, including bycatch (i.e., the accidental interaction of fishing gear with nontarget species), interest in the concept of dynamic ocean management (DOM) has accelerated (5-10). Maxwell et al. (8) define dynamic management as "management that changes in space and time in response to the shifting nature of the ocean and its users based on the integration of new biological, oceanographic, social and/or economic data in near real-time" (8). Dynamic management reflects advancement in our abi...

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“…Flexible management strategies and cooperative research are becoming common tools in fisheries management, and can increase compliance and improve the economic and ecological efficiency of fisheries (Cox et al, 2007;O'Keefe et al, 2013). Flexible management strategies have become more widespread, especially over the last decade, and are facilitated by technology advancements (Gilman et al, 2006;Lewison et al, 2015;Little et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Flexible management strategies have become more widespread, especially over the last decade, and are facilitated by technology advancements (Gilman et al, 2006;Lewison et al, 2015;Little et al, 2015). While flexible strategies, such as "move-on rules, " generally need to be combined with some broader scale management plan, these tools can allow fisheries to reduce their non-target catches, while minimizing the economic impacts on the fleet (Dunn et al, 2013;O'Keefe et al, 2013;Little et al, 2015). Many flexible strategies, especially those intended to reduce nontarget catches, require regular communications between actively fishing vessels and scientists (Bethoney et al, 2013;O'Keefe et al, 2013;Lewison et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…While flexible strategies, such as "move-on rules, " generally need to be combined with some broader scale management plan, these tools can allow fisheries to reduce their non-target catches, while minimizing the economic impacts on the fleet (Dunn et al, 2013;O'Keefe et al, 2013;Little et al, 2015). Many flexible strategies, especially those intended to reduce nontarget catches, require regular communications between actively fishing vessels and scientists (Bethoney et al, 2013;O'Keefe et al, 2013;Lewison et al, 2015). A good relationship between managers and industry is key to a successful fleet communication program because of the need for regular communications of detailed information regarding fishing locations and catch compositions as well as high participation levels (O' Keefe et al, 2013;Lewison et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Cooperative Research to Evaluate an Incidental Catch Distribution Forecast

et al. 2017

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Concern over incidental catches in commercial fisheries has been increasing, and while simple mitigation strategies have been effective, few effective mitigation strategies have been established for more complex species interactions. Incidental catches of alewife (Alosa pseudoharengus) and blueback herring (A. aestivalis) in the commercial Atlantic herring (Clupea harengus) fishery have received substantial attention on the Northeast U.S. continental shelf, despite an existing bycatch avoidance program. This study evaluates the utility of existing species distribution forecasts to predict river herring catches in the southern New England small mesh bottom trawl Atlantic herring fishery, with the ultimate goal of incorporating incidental catch forecasts into the bycatch avoidance program. Commercial Atlantic herring bottom trawl vessels assisted with field-based evaluation of alewife, blueback herring, and Atlantic herring species distribution forecast models. Vessels were equipped with conductivity, temperature, and depth probes, and sampling occurred throughout the fishery season (January-March). Locations of expected low and high forecasted incidental catches were sampled, as well as locations the captain expected to find low and high incidental catches. This allowed us to sample within the spatial area the fishery occurs, and to evaluate the forecasted conditions, and predictions, at the spatial scale of the fishery. Catch differences between high and low probability stations were small and variable, as were differences in modeled probability of species presence. No differences were observed between observations at model-predicted stations and captain-selected stations. The sampling provided a better understanding of the potential effectiveness of distribution forecasts for further reducing incidental catches. Existing models have limited use at the spatial scale of this fishery, but could be improved by developing models with fishery-dependent data. Collaborations between researchers, managers, and the Atlantic herring commercial fleet have improved relationships between the groups, and continued collaboration in the development and evaluation of incidental catch reduction tools is key for further reducing incidental catches.

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Evaluating effectiveness of time/area closures, quotas/caps, and fleet communications to reduce fisheries bycatch

Cited by 103 publications

References 58 publications

Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

Age and growth of small red scorpionfish, Scorpaena notata (Actinopterygii: Scorpaeniformes: Scorpaenidae), a common discard species from the Portuguese fishery

Dynamic ocean management increases the efficiency and efficacy of fisheries management

Cooperative Research to Evaluate an Incidental Catch Distribution Forecast

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