Fishing effort redistribution in response to area closures

Powers, Joseph E.; Abeare, Shane

doi:10.1016/j.fishres.2009.06.011

Cited by 35 publications

(30 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, although a comparison was not conducted between inside and outside the area for reasons explained in the Methods section, the results showed a barely significant increase in the number of sets with FAD outside the protected area (Table 2). This phenomenon has been described in other regulated fisheries with a spatial moratorium (Poos and Rijnsdorp 2007;Powers and Abeare 2009), but the related catches did not increase significantly, which suggests that it was not possible to compensate for the losses inside the area.…”

Section: Discussionmentioning

confidence: 50%

“…However, there are few studies that consider the fishermen component (Wilen et al 2002;Murawsky et al 2005;Kellner et al 2007;Powers and Abeare 2009). Some authors (Johannes et al 2000;Wilen et al 2002;Salas and Gaertner 2004;Kaiser 2005;Branch et al 2006;Poos and Rinsdorp 2007) noted the importance of taking into account fishermen's responses to management measures, basically because fishermen adapt their fishing practices to continue to catch the fish.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of time-area closure on tropical tuna purse-seine fleet dynamics through some fishery indicators

Torres‐Irineo

Gaertner

Molina

et al. 2011

Aquat. Living Resour.

View full text Add to dashboard Cite

-Time-area closures have become a frequently used tool to control fishing effort and protect feeding and spawning areas. However, because time-area closure strata are mainly based on biological and ecological considerations, and do not accounts for fishermen's behavior-at-sea, this type of regulation tool may not entirely achieve its objectives. With the aim of comparing the impact of two different time-area regulations: (1) a moratorium on Fish Aggregating Devices (FAD) sets (1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005) and (2) a no-take area for surface fleets (2005)(2006)(2007)(2008)(2009)(2010) on the dynamics of the European (EU) tuna purse seine fleet operating in the eastern tropical Atlantic, several fishery indicators were evaluated through a Before-After, Control-Impact (BACI) approach. The results showed that prior to any regulation, the fleet used to be concentrated within the Gulf of Guinea area. During the first years of the moratorium on FAD (from November to January within a large region in the eastern Atlantic) there was a movement towards outside the protected area, increasing the total sets on FAD (restricted fishing activity). In general, this moratorium fulfilled its objectives; however, it was not respected during the last years of this regulation. The no-take time-area closure restricted all tuna catches for the surface fisheries but only in November and within a small area (i.e., the Picolo zone). As a result, there was an increase in activities on free schools outside the no-take area. Our findings suggest the use of some simple fishery indicators to understand fleet dynamics as a complement of ecological information before implementing new time area closures. Furthermore, since tunas are highly mobile species, anticipating the possible re-allocation of effort of purse seiners to adjacent areas in response to the spatial regulation is required to design different candidate time-area closures and to evaluate their effectiveness to protect juvenile tunas.

show abstract

Section: Discussionmentioning

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Effects of time-area closure on tropical tuna purse-seine fleet dynamics through some fishery indicators

Torres‐Irineo

Gaertner

Molina

et al. 2011

Aquat. Living Resour.

View full text Add to dashboard Cite

show abstract

“…Species other than bluefin tuna, including white marlin, blue marlin and leatherback turtles, are caught as bycatch when fishing for yellowfin tuna with longline gear (NMFS 2006). Importantly, analyses of different scenarios for the spatial redistribution of displaced effort following any closure designed to reduce bycatch rates of bluefin tuna in the Gulf predict that bycatch rates for other non-target species could be increased (NMFS 2006;Powers and Abeare 2009). This prediction highlights the importance of additional trade-offs when examining what is a multi-faceted policy decision.…”

Section: Discussionmentioning

confidence: 99%

The role of discounting and dynamics in determining the economic efficiency of time-area closures for managing fishery bycatch

et al. 2010

View full text Add to dashboard Cite

Time-area closures are commonly used to manage fisheries bycatch and involve temporarily closing an area of the ocean to particular fishing gears. We examine conditions in which implementing a time-area closure would increase the economic value of fisheries, focusing on a case study application in the Gulf of Mexico. Pelagic longline fishermen catch the highly valued Atlantic bluefin tuna (Thunnus thynnus, Scombridae) on their Gulf of Mexico spawning grounds while fishing for Atlantic yellowfin tuna (Thunnus albacares). We analyze a multispecies, multifishery bioeconomic model that includes information on migratory patterns Electronic supplementary material The online version of this article (from electronic tagged bluefin tuna. We use dynamic optimization to identify management strategies that would maximize the net present value of tuna fisheries, allowing for discounting of future benefits and costs relative to the present. If past fishing mortality rates continue in Atlantic bluefin tuna fisheries, implementing a time-area closure in the Gulf of Mexico incurs economic costs. However, the net present value of the fisheries is increased by implementing a time-area closure as part of a broader commitment to rebuild the heavily depleted bluefin population, provided the discount rate and the costs of such a closure in forgone fishing opportunities are not too large. The increase in economic value offered by a time-area closure is small relative to the overall economic value of rebuilding itself and it may be economically optimal only to implement a closure once sufficient rebuilding has already taken place.

show abstract

“…In the specific case of fisheries closures, the response of fishers and their fishing effort to management actions is important when developing effective regulations (Powers and Abeare 2009). Time-space management regulations could have positive and negative effects on fleet behaviour and therefore on target species (Torres-Irineo et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…25, 205-214 (2012) make is possible to establish a fair and equitable management system. Management actions alter the economic conditions that fishers face and, in response, individual fishers make decisions changing their behaviour (Powers and Abeare 2009). As soon as a management measure is applied, fishers change their allocation of fishing effort (Lehuta et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Measuring the adaptability of fleet segments to a fishing ban : the case of the Bay of Biscay anchovy fishery

Andrés

Prellezo

2012

Aquat. Living Resour.

View full text Add to dashboard Cite

-While fishing resources available to fishermen are becoming increasingly scarce, management actions that regulate these resources are becoming more restrictive, to such an extent that some fisheries remain closed for years. The anchovy fishery in the Bay of Biscay, which was closed for 5 years, from 2005 to 2009, is one of the most important sources of revenue for the Basque pelagic purse-seiner fleet. Throughout the course of this closure the fleet was forced to find alternative revenue streams. In the present study, the fishing alternatives were analysed before and during the anchovy fishery closure, defining an adaptability indicator to measure the ability of the fleet to cope with fisheries closures. Four differently-behaved segments were found within the purse-seiner fleet. Only one of these segments managed to maintain the same level of turnover during the anchovy closure, while the others could not reach a minimum level of adaptability. Compensation of the fishery closure through financial aid was studied, analysing the impact that public aid had on the profit of each segment and on the adaptability indicator.

show abstract

Fishing effort redistribution in response to area closures

Cited by 35 publications

References 17 publications

Effects of time-area closure on tropical tuna purse-seine fleet dynamics through some fishery indicators

Effects of time-area closure on tropical tuna purse-seine fleet dynamics through some fishery indicators

The role of discounting and dynamics in determining the economic efficiency of time-area closures for managing fishery bycatch

Measuring the adaptability of fleet segments to a fishing ban : the case of the Bay of Biscay anchovy fishery

Contact Info

Product

Resources

About