Unanswered Forum Topics

Synthesising a network of evidence on a seabird bycatch mitigation measure

Submitted by allykristan on

Using modeling (specifically Bayesian multilevel network meta-regression modelling), this  study presents a synthesis of the effectiveness of alternative pelagic longline weighting in mitigating seabird bycatch.  There is a high probability (97%) that all weighting designs do reduce seabird bycatch when compared to no weight, but the designs with weights >60g and >1m from the hook performed significantly better than designs with less weight but attached closer to the hook. 

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Synthesising a network of evidence on a seabird bycatch mitigation measure

Submitted by allykristan on

Using modeling (specifically Bayesian multilevel network meta-regression modelling), this  study presents a synthesis of the effectiveness of alternative pelagic longline weighting in mitigating seabird bycatch.  There is a high probability (97%) that all weighting designs do reduce seabird bycatch when compared to no weight, but the designs with weights >60g and >1m from the hook performed significantly better than designs with less weight but attached closer to the hook. 

Read More

Synthesising a network of evidence on a seabird bycatch mitigation measure

Submitted by allykristan on

Using modeling (specifically Bayesian multilevel network meta-regression modelling), this  study presents a synthesis of the effectiveness of alternative pelagic longline weighting in mitigating seabird bycatch.  There is a high probability (97%) that all weighting designs do reduce seabird bycatch when compared to no weight, but the designs with weights >60g and >1m from the hook performed significantly better than designs with less weight but attached closer to the hook. 

Read More

Synthesising a network of evidence on a seabird bycatch mitigation measure

Submitted by allykristan on

Using modeling (specifically Bayesian multilevel network meta-regression modelling), this  study presents a synthesis of the effectiveness of alternative pelagic longline weighting in mitigating seabird bycatch.  There is a high probability (97%) that all weighting designs do reduce seabird bycatch when compared to no weight, but the designs with weights >60g and >1m from the hook performed significantly better than designs with less weight but attached closer to the hook. 

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Fisheries bycatch threatens sessile communities of the Great Amazon Reef System

Submitted by allykristan on

This paper assessed richness, distribution, and incidental catch of benthic sessile invertebrates in the Great Amazon Reef System (GARS)  based on records and photographs collected from onboard observers between 2015 and 2022. In total, 54 distinct species were recorded as bycatch, with most being echinoderms. Gillnet and trawl fisheries pose great threats to the GARS, and over time this bycatch may profoundly disturb benthic reef communities and therefore reduce fishery yields.

 

 

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Fisheries bycatch threatens sessile communities of the Great Amazon Reef System

Submitted by allykristan on

This paper assessed richness, distribution, and incidental catch of benthic sessile invertebrates in the Great Amazon Reef System (GARS)  based on records and photographs collected from onboard observers between 2015 and 2022. In total, 54 distinct species were recorded as bycatch, with most being echinoderms. Gillnet and trawl fisheries pose great threats to the GARS, and over time this bycatch may profoundly disturb benthic reef communities and therefore reduce fishery yields.

 

 

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Fisheries bycatch threatens sessile communities of the Great Amazon Reef System

Submitted by allykristan on

This paper assessed richness, distribution, and incidental catch of benthic sessile invertebrates in the Great Amazon Reef System (GARS)  based on records and photographs collected from onboard observers between 2015 and 2022. In total, 54 distinct species were recorded as bycatch, with most being echinoderms. Gillnet and trawl fisheries pose great threats to the GARS, and over time this bycatch may profoundly disturb benthic reef communities and therefore reduce fishery yields.

 

 

Read More

Fisheries bycatch threatens sessile communities of the Great Amazon Reef System

Submitted by allykristan on

This paper assessed richness, distribution, and incidental catch of benthic sessile invertebrates in the Great Amazon Reef System (GARS)  based on records and photographs collected from onboard observers between 2015 and 2022. In total, 54 distinct species were recorded as bycatch, with most being echinoderms. Gillnet and trawl fisheries pose great threats to the GARS, and over time this bycatch may profoundly disturb benthic reef communities and therefore reduce fishery yields.

 

 

Read More

Fisheries bycatch threatens sessile communities of the Great Amazon Reef System

Submitted by allykristan on

This paper assessed richness, distribution, and incidental catch of benthic sessile invertebrates in the Great Amazon Reef System (GARS)  based on records and photographs collected from onboard observers between 2015 and 2022. In total, 54 distinct species were recorded as bycatch, with most being echinoderms. Gillnet and trawl fisheries pose great threats to the GARS, and over time this bycatch may profoundly disturb benthic reef communities and therefore reduce fishery yields.

 

 

Read More

Unravelling the deep: Assessing the bycatch of deep-sea elasmobranchs in crustacean bottom trawl fisheries in Portugal

Study Type
Field study in the wild
Location
Portugal
Target catch
crustaceans (shrimp/prawns, Norway lobster)
Effect on bycatch species
no mitigation tested
Effect on target catch
no mitigation tested
Bycatch species
Fishing Gear

Unravelling the deep: Assessing the bycatch of deep-sea elasmobranchs in crustacean bottom trawl fisheries in Portugal

Study Type
Field study in the wild
Location
Portugal
Target catch
crustaceans (shrimp/prawns, Norway lobster)
Effect on bycatch species
no mitigation tested
Effect on target catch
no mitigation tested
Bycatch species
Fishing Gear

Unravelling the deep: Assessing the bycatch of deep-sea elasmobranchs in crustacean bottom trawl fisheries in Portugal

Submitted by allykristan on

This study measured deep-sea elasmobranch (DSE) bycatch on a commercial crustacean bottom trawler off of southern Portugal between June 2020 and May 2022, and collected data from Global Fishing Watch to estimate the bycatch of deep-sea sharks since 2017, which is the year that trawling below 800m was banned in the region. DSE represents a high proportion of total catch biomass, especially at depths below 800m; despite EU regulations restricting fishing to only occur above 800m, bottom trawlers were regularly observed operating below that depth.

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