Probability of Atlantic Salmon Post-Smolts Encountering a Tidal Turbine Installation in Minas Passage, Bay of Fundy

Sanderson, Brian Gavin; Karsten, Richard; Solda, Cameron; Hardie, David C.; Hasselman, Daniel J.

doi:10.3390/jmse11051095

Cited by 4 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Provided that drifter measurements [42] verify the utility of the present estimates of detection efficiency, there is every prospect of using detected signals from tagged fish to calculate fish-turbine encounter probability in the tidal energy demonstration area in the Minas Passage [43]. Encounter probability places an upper bound on the possibility of fish being harmed by MHK turbines and is, therefore, expected to be an important consideration for the regulation of MHK turbines under the Canadian Environmental Assessment Act, Fisheries Act, and Species at Risk Act.…”

mentioning

confidence: 99%

Measuring Detection Efficiency of High-Residency Acoustic Signals for Estimating Probability of Fish–Turbine Encounter in a Fast-Flowing Tidal Passage

Sanderson

Bangley

McGarry³

et al. 2023

JMSE

View full text Add to dashboard Cite

Semidiurnal tidal currents can exceed 5 ms−1 in Minas Passage, Bay of Fundy, where a tidal energy demonstration area has been designated to generate electricity using marine hydrokinetic turbines. The risk of harmful fish–turbine interaction cannot be dismissed for either migratory or local fish populations. Individuals belonging to several fish populations were acoustically tagged and monitored by using acoustic receivers moored within the Minas Passage. Detection efficiency ρ is required as the first step to estimate the probability of fish–turbine encounter. Moored Innovasea HR2 receivers and high-residency (HR) tags were used to obtain detection efficiency ρ as a function of range and current speed, for near-seafloor signal paths within the tidal energy development area. Strong tidal currents moved moorings, so HR tag signals and their reflections from the sea surface were used to measure ranges from tags to receivers. HR2 self-signals that reflected off the sea surface showed which moorings were displaced to lower and higher levels on the seafloor. Some of the range testing paths had anomalously low ρ, which might be attributed to variable bathymetry blocking the line-of-sight signal path. Clear and blocked signal paths accord with mooring levels. The application of ρ is demonstrated for the calculation of abundance, effective detection range, and detection-positive intervals. High-residency signals were better detected than pulse position modulation (PPM) signals. Providing that the presently obtained ρ applies to tagged fish that swim higher in the water column, there is a reasonable prospect that probability of fish–turbine encounter can be estimated by monitoring fish that carry HR tags.

show abstract

mentioning

confidence: 99%

Measuring Detection Efficiency of High-Residency Acoustic Signals for Estimating Probability of Fish–Turbine Encounter in a Fast-Flowing Tidal Passage

Sanderson

Bangley

McGarry³

et al. 2023

JMSE

View full text Add to dashboard Cite

show abstract

‘Scaling up’ our understanding of environmental effects of marine renewable energy development from single devices to large-scale commercial arrays

Hasselman,

Hemery,

Copping

et al. 2023

Science of The Total Environment

View full text Add to dashboard Cite

Social network analysis as a tool to inform anguillid eel conservation and management

Williamson,

Jacoby,

Bašić

et al. 2024

ICES Journal of Marine Science

View full text Add to dashboard Cite

Eel Management Plans demand European silver eel (Anguilla anguilla) escapement to the sea of at least 40% of that expected historically in the absence of human impacts. Landlocked lentic waterbodies, such as drinking water reservoirs, host substantial numbers of eel, which could represent a significant contribution to catchment-based conservation targets. To optimize netting strategies for eel management policies, information on their aggregation behaviour is currently needed but lacking. We performed a fine-scale acoustic tracking study to monitor the movements of 86 European eel in a UK reservoir. Social network sampling and sensitivity analyses were used to assess whether eel aggregate at scales relevant for current capture techniques. European eel were found to aggregate at spatial and temporal scales of 50 m and 2 days, respectively, which complements current capture methodologies and recommendations. Aggregations were not driven by fixed resources, indicating that other factors, such as sociality, may drive aggregation behaviour. Results also show that current netting practices could be optimized by increasing netting lengths from 50 to 80 m. In addition to aiding conservation and management protocols, these results provide an ecological foundation for exploring the role of social behaviour in this Critically Endangered species.

show abstract

Probability of Atlantic Salmon Post-Smolts Encountering a Tidal Turbine Installation in Minas Passage, Bay of Fundy

Cited by 4 publications

References 31 publications

Measuring Detection Efficiency of High-Residency Acoustic Signals for Estimating Probability of Fish–Turbine Encounter in a Fast-Flowing Tidal Passage

Measuring Detection Efficiency of High-Residency Acoustic Signals for Estimating Probability of Fish–Turbine Encounter in a Fast-Flowing Tidal Passage

‘Scaling up’ our understanding of environmental effects of marine renewable energy development from single devices to large-scale commercial arrays

Social network analysis as a tool to inform anguillid eel conservation and management

Contact Info

Product

Resources

About