Effects of 2D seismic on the snow crab fishery

Morris, Corey J.; Côté, David; Martin, Bruce; Kehler, Dan

doi:10.1016/j.fishres.2017.09.012

Cited by 24 publications

(13 citation statements)

References 25 publications

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“…The influence of the subsea cable installation on snow crab in Sydney Bight remains to be evaluated; however, the hybrid telemetry technology combined with a partnership-oriented approach among commercial harvesters, the electric utility, the regulator, and the OTN, enabled the collection of baseline data that will be essential to evaluating the potential effects of the project. Collaboration among industry, academia, and government has been demonstrated to increase the effectiveness of environmental science (Morris et al 2017;Rosenlund 2017). The benefits of such collaborations can be farreaching, including improved access to resources and data, broader expertise, increased trust and confidence in the science outcomes, and improved social license for industry.…”

Section: Discussionmentioning

confidence: 99%

Characterizing snow crab (Chionoecetes opilio) movements in the Sydney Bight (Nova Scotia, Canada): a collaborative approach using multiscale acoustic telemetry

Côté

Nicolas

Whoriskey

et al. 2019

Can. J. Fish. Aquat. Sci.

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Like many deeper ocean species, the fine-scale movement ecology of snow crab is not well understood. We integrated fine-scale positioning telemetry with larger-scale position estimates from autonomous mobile surveys and harvester returns to evaluate movements of male and female snow crab (Chionoecetes opilio). Effects of life stage–sex, temperature, and diel and tidal cycles on movement velocity were observed, with a tendency for increased velocities during the night, slack tide, and at increasing water temperatures. Males also moved faster than females and juveniles. The strength of these statistical relationships, however, was weak (R2 = 7.2%). The movement direction also did not vary over the tidal cycle. The maximum distance moved for adult males was an order of magnitude higher (37.1 km) than for females (3.6 km) and juvenile males (3.9 km), but median distances were more similar across groups. Individuals, once released, tended to disperse and move toward slope habitats. Little evidence of site fidelity was apparent. The absence of strong environmental influences on movements likely reflected the behavioural plasticity of snow crab and the relative environmental stability of offshore environments.

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Section: Discussionmentioning

confidence: 99%

Characterizing snow crab (Chionoecetes opilio) movements in the Sydney Bight (Nova Scotia, Canada): a collaborative approach using multiscale acoustic telemetry

Côté

Nicolas

Whoriskey

et al. 2019

Can. J. Fish. Aquat. Sci.

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“…There are many studies showing the behavioural or physiological effects from sound exposure on fishes (Slabbekoorn et al, 2010;Cox et al, 2018;Popper and Hawkins, 2019), but assessing impact on free-ranging individuals from an anthropogenic source, such as a seismic survey, remains difficult and rarely performed (Pearson et al, 1992;Hassel et al, 2004;Fewtrell and McCauley, 2012;Bruce et al, 2018;Carroll et al, 2017;Morris et al, 2018;Morris et al, 2020;Slabbekoorn et al, 2019;Kok et al, 2021). The sounds from anthropogenic activities may reach fish by direct propagation through the water column or indirect propagation through the substrate (Hazelwood, 2012;Roberts and Elliot, 2017;Popper and Hawkins, 2019).…”

Section: Seismic Survey Exposure Conditions and Potential Consequencesmentioning

confidence: 99%

North Sea soundscapes from a fish perspective: Directional patterns in particle motion and masking potential from anthropogenic noise

Rogers

Debusschere

Haan

et al. 2021

The Journal of the Acoustical Society of America

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The aquatic world of animals is an acoustic world as sound is the most prominent sensory capacity to extract information about the environment for many aquatic species. Fish can hear particle motion, and a swim bladder potentially adds the additional capacity to sense sound pressure. Combining these capacities allows them to sense direction, distance, spectral content, and detailed temporal patterns. Both sound pressure and particle motion were recorded in a shallow part of the North Sea before and during exposure to a full-scale airgun array from an experimental seismic survey. Distinct amplitude fluctuations and directional patterns in the ambient noise were found to be fluctuating in phase with the tidal cycles and coming from distinct directions. It was speculated that the patterns may be determined by distant sources associated with large rivers and nearby beaches. Sounds of the experimental seismic survey were above the ambient conditions for particle acceleration up to 10 km from the source, at least as detectable for the measurement device, and up to 31 km for the sound pressure. These results and discussion provide a fresh perspective on the auditory world of fishes and a shift in the understanding about potential ranges over which they may have access to biologically relevant cues and be masked by anthropogenic noise.

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“…These include the expense and difficulty of chartering and tasking seismic vessels dedicated to experimental work and the confounding effects of studying species that are also the target of commercial fisheries and thus likely to be subject to depletion, irrespective of the potential effects of seismic surveys. Furthermore, given the distances sound may travel underwater, there is a major issue with the scale of experimental studies, which must encompass hundreds of square kilometers to monitor target species at places that might act as control locations (1,(3)(4)(5). This invariably requires the use of large vessels with high costs and complex logistics.…”

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confidence: 99%

A large-scale experiment finds no evidence that a seismic survey impacts a demersal fish fauna

Meekan

Speed

McCauley

et al. 2021

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

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Seismic surveys are used to locate oil and gas reserves below the seabed and can be a major source of noise in marine environments. Their effects on commercial fisheries are a subject of debate, with experimental studies often producing results that are difficult to interpret. We overcame these issues in a large-scale experiment that quantified the impacts of exposure to a commercial seismic source on an assemblage of tropical demersal fishes targeted by commercial fisheries on the North West Shelf of Western Australia. We show that there were no short-term (days) or long-term (months) effects of exposure on the composition, abundance, size structure, behavior, or movement of this fauna. These multiple lines of evidence suggest that seismic surveys have little impact on demersal fishes in this environment.

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Effects of 2D seismic on the snow crab fishery

Cited by 24 publications

References 25 publications

Characterizing snow crab (Chionoecetes opilio) movements in the Sydney Bight (Nova Scotia, Canada): a collaborative approach using multiscale acoustic telemetry

Characterizing snow crab (Chionoecetes opilio) movements in the Sydney Bight (Nova Scotia, Canada): a collaborative approach using multiscale acoustic telemetry

North Sea soundscapes from a fish perspective: Directional patterns in particle motion and masking potential from anthropogenic noise

A large-scale experiment finds no evidence that a seismic survey impacts a demersal fish fauna

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