Unanswered Forum Topics

Working with Northeastern United States lobster harvesters to develop acoustic trap retrieval in place of buoys and persistent vertical lines to reduce whale entanglements

Study Type
Field study in the wild
Location
New England
Target catch
lobster, crab
Effect on bycatch species
not reported on
Effect on target catch
hauling/recovery of traps increased (83%-88%), but specifics of target catch were not reported
Reduction technique
Fishing Gear

Working with Northeastern United States lobster harvesters to develop acoustic trap retrieval in place of buoys and persistent vertical lines to reduce whale entanglements

Study Type
Field study in the wild
Location
New England
Target catch
lobster, crab
Effect on bycatch species
not reported on
Effect on target catch
hauling/recovery of traps increased (83%-88%), but specifics of target catch were not reported
Reduction technique
Fishing Gear

Working with Northeastern United States lobster harvesters to develop acoustic trap retrieval in place of buoys and persistent vertical lines to reduce whale entanglements

Submitted by allykristan on

This study trialed the use of  on-demand, acoustic recovery systems/ on-demand gear (ODGs) as an alternative to vertical buoy lines (VBLs) to reduce North Atlantic right whale (Eubalaena glacialis) entanglement risk in commercial lobster and crap trap fisheries in offshore New England. Trials occurred between 2020 and 2023, and 5,798 hauls were completed using 10 different ODG prototypes.

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Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Study Type
Field study in the wild
Location
Black Sea
Target catch
turbot (Scophthalmus spp)
Effect on bycatch species
Bycatch rates showed seasonal variation with marked increase in summer, compared to spring. Total annual bycatch of harbour seals in Black Sea estimated to be between 11,826 and 16 200 individuals.
Effect on target catch
not measured
Fishing Gear

Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Study Type
Field study in the wild
Location
Black Sea
Target catch
turbot (Scophthalmus spp)
Effect on bycatch species
Bycatch rates showed seasonal variation with marked increase in summer, compared to spring. Total annual bycatch of harbour seals in Black Sea estimated to be between 11,826 and 16 200 individuals.
Effect on target catch
not measured
Fishing Gear

Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Submitted by allykristan on

This study investigated harbor porpoise bycatch in bottom gillnets and trammel nets targeting turbot (Scophthalmus spp.) in the Black Sea between 2019-2021 via independent observers, questionnaires and stranding data. Cetaceans were caught on 55% of trips, and most were harbour porpoises. The study confirmed that bycatch is the most serious and immediate threat to the Black Sea harbour porpoises, with as many as 16,200 individuals caught annually. 

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Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Submitted by allykristan on

This study investigated harbor porpoise bycatch in bottom gillnets and trammel nets targeting turbot (Scophthalmus spp.) in the Black Sea between 2019-2021 via independent observers, questionnaires and stranding data. Cetaceans were caught on 55% of trips, and most were harbour porpoises. The study confirmed that bycatch is the most serious and immediate threat to the Black Sea harbour porpoises, with as many as 16,200 individuals caught annually. 

Read More

Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Submitted by allykristan on

This study investigated harbor porpoise bycatch in bottom gillnets and trammel nets targeting turbot (Scophthalmus spp.) in the Black Sea between 2019-2021 via independent observers, questionnaires and stranding data. Cetaceans were caught on 55% of trips, and most were harbour porpoises. The study confirmed that bycatch is the most serious and immediate threat to the Black Sea harbour porpoises, with as many as 16,200 individuals caught annually. 

Read More

Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Submitted by allykristan on

This study investigated harbor porpoise bycatch in bottom gillnets and trammel nets targeting turbot (Scophthalmus spp.) in the Black Sea between 2019-2021 via independent observers, questionnaires and stranding data. Cetaceans were caught on 55% of trips, and most were harbour porpoises. The study confirmed that bycatch is the most serious and immediate threat to the Black Sea harbour porpoises, with as many as 16,200 individuals caught annually. 

Read More

Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Submitted by allykristan on

This study investigated harbor porpoise bycatch in bottom gillnets and trammel nets targeting turbot (Scophthalmus spp.) in the Black Sea between 2019-2021 via independent observers, questionnaires and stranding data. Cetaceans were caught on 55% of trips, and most were harbour porpoises. The study confirmed that bycatch is the most serious and immediate threat to the Black Sea harbour porpoises, with as many as 16,200 individuals caught annually. 

Read More

Assessment of the bycatch level for the Black Sea harbour porpoise in the light of new data on population abundance

Submitted by allykristan on

This study investigated harbor porpoise bycatch in bottom gillnets and trammel nets targeting turbot (Scophthalmus spp.) in the Black Sea between 2019-2021 via independent observers, questionnaires and stranding data. Cetaceans were caught on 55% of trips, and most were harbour porpoises. The study confirmed that bycatch is the most serious and immediate threat to the Black Sea harbour porpoises, with as many as 16,200 individuals caught annually. 

Read More

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Study Type
Field study in the wild
Location
Húnaflói Bay, northern Iceland
Target catch
Icelandic lumpfish
Effect on bycatch species
no effect
Effect on target catch
No effect, but a strong correlation between bycatch rates and net depth was observed, suggesting that fishing below 50m only would highly reduce seabird bycatch
Bycatch species
Reduction technique
Fishing Gear

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Study Type
Field study in the wild
Location
Húnaflói Bay, northern Iceland
Target catch
Icelandic lumpfish
Effect on bycatch species
no effect
Effect on target catch
No effect, but a strong correlation between bycatch rates and net depth was observed, suggesting that fishing below 50m only would highly reduce seabird bycatch
Bycatch species
Reduction technique
Fishing Gear

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Study Type
Field study in the wild
Location
Húnaflói Bay, northern Iceland
Target catch
Icelandic lumpfish
Effect on bycatch species
no effect
Effect on target catch
No effect, but a strong correlation between bycatch rates and net depth was observed, suggesting that fishing below 50m only would highly reduce seabird bycatch
Bycatch species
Reduction technique
Fishing Gear

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Submitted by allykristan on

This study experimented with the use of Looming-Eye Buoys (LEBs) attached to gillnets in the Icelandic lumpfish fishery to reduce seabird bycatch, and experiments took place in spring 2022. LEBs are intended to be a visual deterrent that mimics a predator's eyes. The LEBs did not have a significant impact on target catch or bycatch, but results suggest a strong correlation between seabird bycatch and depth; the authors estimate that limiting fishing to waters below 50m deep could save between 5000 and 9300 seabirds every year.

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Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Submitted by allykristan on

This study experimented with the use of Looming-Eye Buoys (LEBs) attached to gillnets in the Icelandic lumpfish fishery to reduce seabird bycatch, and experiments took place in spring 2022. LEBs are intended to be a visual deterrent that mimics a predator's eyes. The LEBs did not have a significant impact on target catch or bycatch, but results suggest a strong correlation between seabird bycatch and depth; the authors estimate that limiting fishing to waters below 50m deep could save between 5000 and 9300 seabirds every year.

Read More

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Submitted by allykristan on

This study experimented with the use of Looming-Eye Buoys (LEBs) attached to gillnets in the Icelandic lumpfish fishery to reduce seabird bycatch, and experiments took place in spring 2022. LEBs are intended to be a visual deterrent that mimics a predator's eyes. The LEBs did not have a significant impact on target catch or bycatch, but results suggest a strong correlation between seabird bycatch and depth; the authors estimate that limiting fishing to waters below 50m deep could save between 5000 and 9300 seabirds every year.

Read More

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Submitted by allykristan on

This study experimented with the use of Looming-Eye Buoys (LEBs) attached to gillnets in the Icelandic lumpfish fishery to reduce seabird bycatch, and experiments took place in spring 2022. LEBs are intended to be a visual deterrent that mimics a predator's eyes. The LEBs did not have a significant impact on target catch or bycatch, but results suggest a strong correlation between seabird bycatch and depth; the authors estimate that limiting fishing to waters below 50m deep could save between 5000 and 9300 seabirds every year.

Read More

Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative

Submitted by allykristan on

This study experimented with the use of Looming-Eye Buoys (LEBs) attached to gillnets in the Icelandic lumpfish fishery to reduce seabird bycatch, and experiments took place in spring 2022. LEBs are intended to be a visual deterrent that mimics a predator's eyes. The LEBs did not have a significant impact on target catch or bycatch, but results suggest a strong correlation between seabird bycatch and depth; the authors estimate that limiting fishing to waters below 50m deep could save between 5000 and 9300 seabirds every year.

Read More