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Marine Bird Bycatch in Alaska Salmon Gillnet Fisheries

Submitted by allykristan on

This study summarized data from bycatch of marine birds in Alaska salmon gillnet fisheries from 1990-2013 in order to model and estimate bycatch rates. Bycatch was highly variable by area and year, but common murres (Uria aalge) and marbled murrelets (Brachyramphus marmoratus) were highest, and longer soaking time indicated higher likelihood of seabird bycatch. The authors suggest the following practices to reduce seabird bycatch: tending nets more frequently, ensuring nets remain clean and under tension, and reducing/stopping effort during night and twilight.

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Mitigating the impact of longline fisheries on seabirds: Lessons learned from the South Georgia Patagonian toothfish fishery (CCAMLR Subarea 48.3)

Submitted by allykristan on

This paper reports on successful seabird mitigation methods implemented in a CCAMLR fishery. The sub-Antarctic Patagonian toothfish fisheryhad a high seabird bycatch mortality rate, particularly of black-browed albatross and white-chinned petrels, when it began (>5,000 birds per 1,000 hooks); due to successful mitigation measures and compliance, it has since significantly reduced (<0.01 bird per 1,000 hooks).

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Mitigating the impact of longline fisheries on seabirds: Lessons learned from the South Georgia Patagonian toothfish fishery (CCAMLR Subarea 48.3)

Submitted by allykristan on

This paper reports on successful seabird mitigation methods implemented in a CCAMLR fishery. The sub-Antarctic Patagonian toothfish fisheryhad a high seabird bycatch mortality rate, particularly of black-browed albatross and white-chinned petrels, when it began (>5,000 birds per 1,000 hooks); due to successful mitigation measures and compliance, it has since significantly reduced (<0.01 bird per 1,000 hooks).

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Mitigating the impact of longline fisheries on seabirds: Lessons learned from the South Georgia Patagonian toothfish fishery (CCAMLR Subarea 48.3)

Submitted by allykristan on

This paper reports on successful seabird mitigation methods implemented in a CCAMLR fishery. The sub-Antarctic Patagonian toothfish fisheryhad a high seabird bycatch mortality rate, particularly of black-browed albatross and white-chinned petrels, when it began (>5,000 birds per 1,000 hooks); due to successful mitigation measures and compliance, it has since significantly reduced (<0.01 bird per 1,000 hooks).

Read More

Mitigating the impact of longline fisheries on seabirds: Lessons learned from the South Georgia Patagonian toothfish fishery (CCAMLR Subarea 48.3)

Submitted by allykristan on

This paper reports on successful seabird mitigation methods implemented in a CCAMLR fishery. The sub-Antarctic Patagonian toothfish fisheryhad a high seabird bycatch mortality rate, particularly of black-browed albatross and white-chinned petrels, when it began (>5,000 birds per 1,000 hooks); due to successful mitigation measures and compliance, it has since significantly reduced (<0.01 bird per 1,000 hooks).

Read More

Mitigating the impact of longline fisheries on seabirds: Lessons learned from the South Georgia Patagonian toothfish fishery (CCAMLR Subarea 48.3)

Submitted by allykristan on

This paper reports on successful seabird mitigation methods implemented in a CCAMLR fishery. The sub-Antarctic Patagonian toothfish fisheryhad a high seabird bycatch mortality rate, particularly of black-browed albatross and white-chinned petrels, when it began (>5,000 birds per 1,000 hooks); due to successful mitigation measures and compliance, it has since significantly reduced (<0.01 bird per 1,000 hooks).

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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. 

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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. 

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. 

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.

 

 

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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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