Exporting the problem: Issues with fishing closures in seabird conservation

Copello, Sofía; Blanco, Gabriela S.; Pon, Juan Pablo Seco; Quintana, Flavio; Favero, Marco

doi:10.1016/j.marpol.2016.09.008

Cited by 11 publications

(7 citation statements)

References 42 publications

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“…They analyzed the relationship between seabird bycatch and distance of vessels from the closure boundary and found that most seabird interactions with trawlers occurred in clustered aggregations along the boundary line. They also found more intense foraging of black-browed albatross (Thalassarche melanophris) and southern giant petrel (Macronectes giganteus) near the closure boundary than away from it or inside the closure area (Copello et al 2016). The authors noted that there are no oceanographic fronts (i.e., areas with high productivity that typically attract seabird foraging) along the closure boundary and that the increased foraging was not associated with natural prey items.…”

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 98%

“…Although predictive models can be useful to examine potential outcomes from time-area fishing restrictions, consequences associated with single species management objectives need to be considered. Copello et al (2016) examined the distribution, bycatch rates, and foraging behavior of seabirds inside and outside of the Argentine hake closure to determine the impacts of a 'boundary effect' from concentrated fishing effort. The Argentine hake fishery closure, a ∼120,000km 2 fishery exclusion area on the Patagonia shelf, was implemented in the mid-1990s to protect Argentine hake (Merluccius hubssi).…”

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 99%

“…The Argentine hake fishery closure, a ∼120,000km 2 fishery exclusion area on the Patagonia shelf, was implemented in the mid-1990s to protect Argentine hake (Merluccius hubssi). Since the 1997 ban on trawl gear, hake and other fish stocks substantially increased in the closure area (Copello et al 2016). Fishing effort that was concentrated on the closure boundary, however, resulted in increased bycatch of several albatross and petrel species.…”

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 99%

“…The authors highlighted potentially disproportionate impacts on juvenile seabirds resulting from competition for fishery discards with larger more aggressive adults, as well as female seabirds that are restricted to foraging in the Continental Shelf during the breeding period. Therefore, Copello et al (2016) recommended that non-target species behavior and boundary effects should be considered when designing spatial conservation measures. The case study highlights problems with time-area closures that are designed to meet single species objectives and demonstrates how spatial shifts in fishing effort can impact ecosystem functions.…”

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 99%

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Efficacy of Time-Area Fishing Restrictions and Gear-Switching as Solutions for Reducing Seabird Bycatch in Gillnet Fisheries

O’Keefe¹,

Cadrin

Glemarec

et al. 2021

Reviews in Fisheries Science & Aquaculture

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Despite the global scale of gillnet bycatch, universal measures that effectively reduce bycatch of seabirds in gillnets have not been found. Bycatch in coastal gillnet fisheries is an ongoing threat for several seabird species. Strategies to reduce seabird bycatch in gillnet fisheries were evaluated, focusing on the effectiveness of time-area fishing restrictions and gear-switching to meet seabird conservation objectives, ensure fisher acceptance, and avoid unintended consequences. A review of case studies showed that variations in the spatial and temporal distributions of target and non-target species may cause a mismatch between time-area regulations and high bycatch, but consideration of bycatch species behavior can help define effective fine-scale spatial and temporal measures. The potential for meeting conservation objectives through gear-switching is promising, with some further development needed for successful application. Combining measures (e.g., time-area fishing restrictions, gear-switching, visual and acoustic deterrents) may be feasible in some regions, if fine-scale spatial and temporal information about the overlap of seabirds and gillnet gear is available. A holistic approach to reduce seabird bycatch in gillnets, including understanding of seabird biology, habitat preference, and feeding ecology combined with information about fishing activity, target species, and socioeconomic impacts provides a framework to develop mitigation measures.

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Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 98%

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 99%

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 99%

Section: Mapping and Modeling Of Spatial And Temporal Seabird-fisheries Interactionsmentioning

confidence: 99%

See 2 more Smart Citations

Efficacy of Time-Area Fishing Restrictions and Gear-Switching as Solutions for Reducing Seabird Bycatch in Gillnet Fisheries

O’Keefe¹,

Cadrin

Glemarec

et al. 2021

Reviews in Fisheries Science & Aquaculture

View full text Add to dashboard Cite

show abstract

“…For example, southern giant petrels and black-browed albatrosses may show certain differences in their foraging behaviors with respect to areas inside and outside the permanent Argentine hake Merluccius hubbsi fishing closure in the Patagonian Shelf (see Section 3.2). The bulk of the core foraging areas of these species were concentrated in waters adjacent to the fishing closure where the fishing effort is higher than in other areas of the shelf [38]. Besides, this fishing closure produced a redistribution of the seabird bycatch creating a "boundary effect" due to the concentration of the fishing effort in the limits of the closure.…”

Section: Spatial and Temporal Overlap Between Seabirds And Fishing Acmentioning

confidence: 99%

Certification Schemes in Argentine Fisheries: Opportunities and Challenges for Seabird Conservation

Pon¹,

Paz²,

Mariano-Jelicich³

et al. 2018

Seabirds

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In Argentina, one major factor playing a significant role in the implementation of better fishing practices is related to the advent of the Marine Stewardship Council (MSC) certification schemes in marine fisheries, given that one of its component addresses the impact of fishing operations on the ecosystem (e.g. effects on the environment, related species, bycatch). In recent years, several fisheries in Argentina-ranging from coastal ice trawlers targeting the Argentine anchovy Engraulis anchoita to freezer trawlers targeting the Patagonian scallop Zygochlamys patagonica and the Patagonian grenadier or Hoki Macruronus magellanicus have been certified under the MSC scheme. Although these processes are not driven by the Government certainly creates opportunities to develop better fishing practices including in the agendas of fishermen not only target species but also other management issues affecting the marine environment. In this chapter, we will review the current status of the certification schemes implemented in the latter referred fisheries regarding seabird conservation discussing challenges and opportunities from the seabird perspective.

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Foraging habitat suitability of black‐browed albatrosses Thalassarche melanophris wintering in the South‐west Atlantic Ocean: Acknowledging age class to improve conservation management

Paz,

Seco Pon,

Krüger

et al. 2024

Aquatic Conservation

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Seabirds, particularly albatrosses, are among the most threatened birds as a result of their continuous exposure to anthropic pressures including interaction with commercial fisheries, climate change and pollution. Several studies that have focused on the spatial distribution of foraging seabirds have identified a certain level of segregation between age classes. The black‐browed albatross Thalassarche melanophris is the most abundant albatross species in the South‐west Atlantic Ocean and the main pelagic seabird interacting with a range of fishing fleets. There is a considerable lack of knowledge about the biology of immature individuals and on habitat suitability of the species during non‐breeding season (winter). The aim of this study was to assess the foraging habitat suitability of the black‐browed albatross in the South‐west Atlantic during the austral winter, analysing differences between adults and immatures individuals. Habitat suitability models were based on foraging locations recorded by 15 satellite transmitters deployed on six adults and nine immature individuals between 2011 and 2015. Remotely sensed oceanographic data were used to characterize suitable foraging habitat for the albatrosses. Differences were found in foraging habitat suitability by age class, with adult selecting areas located in deeper waters over the continental shelf break as well as in neritic zones under cooler water temperatures, whereas immature individuals foraged chiefly off coastal waters having more moderate temperatures. Knowing habitat suitability and segregation patterns within‐species is key for the conservation of critical marine habitats given that, by only considering one age class, other important habitats would be neglected and not considered in conservation efforts to mitigate threats such as incidental mortality. It is important to include all age classes when studying patterns of associations with threats, such as fishing activity as a proxy of risk of bycatch, and for the development of Marine Protected Areas.

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Exporting the problem: Issues with fishing closures in seabird conservation

Cited by 11 publications

References 42 publications

Efficacy of Time-Area Fishing Restrictions and Gear-Switching as Solutions for Reducing Seabird Bycatch in Gillnet Fisheries

Efficacy of Time-Area Fishing Restrictions and Gear-Switching as Solutions for Reducing Seabird Bycatch in Gillnet Fisheries

Certification Schemes in Argentine Fisheries: Opportunities and Challenges for Seabird Conservation

Foraging habitat suitability of black‐browed albatrosses Thalassarche melanophris wintering in the South‐west Atlantic Ocean: Acknowledging age class to improve conservation management

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