Active Forum Topics

Vulnerability of the Critically Endangered leatherback turtle to fisheries bycatch in the eastern Pacific Ocean. II. Assessment of mitigation measures

Submitted by allykristan on

The authors compiled fishing effort data from a nearly 20 year period across 18 different longline, gillnet and purse seine fisheries in the eastern Pacific Ocean in order to assess/model vulnerability of leatherback sea turtles to fishing impacts under 70 different conservation management measure (CMM) scenarios. To do this, a new ecological risk assessment approach, the Ecological Assessment for the Sustainable Impacts of Fisheries (EASI-Fish), was used.

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Vulnerability of the Critically Endangered leatherback turtle to fisheries bycatch in the eastern Pacific Ocean. II. Assessment of mitigation measures

Submitted by allykristan on

The authors compiled fishing effort data from a nearly 20 year period across 18 different longline, gillnet and purse seine fisheries in the eastern Pacific Ocean in order to assess/model vulnerability of leatherback sea turtles to fishing impacts under 70 different conservation management measure (CMM) scenarios. To do this, a new ecological risk assessment approach, the Ecological Assessment for the Sustainable Impacts of Fisheries (EASI-Fish), was used.

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First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic waters

Submitted by allykristan on

This study used systemic scar analysis to estimate the frequency of non-lethal entanglements among humpback whales off the coast of Iceland from 2005-2017. Results demonstrate that at least 24.8% of individuals had prior entanglement(s) when first encountered, and then subsequently acquired new entanglement-related injuries at an averafe rate of 1.9% per year; however, scar-based estimates usually underestimate the frequency of prior entanglements. At least some entanglements seem to have occurred locally. 

 

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First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic waters

Submitted by allykristan on

This study used systemic scar analysis to estimate the frequency of non-lethal entanglements among humpback whales off the coast of Iceland from 2005-2017. Results demonstrate that at least 24.8% of individuals had prior entanglement(s) when first encountered, and then subsequently acquired new entanglement-related injuries at an averafe rate of 1.9% per year; however, scar-based estimates usually underestimate the frequency of prior entanglements. At least some entanglements seem to have occurred locally. 

 

Read More

First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic waters

Submitted by allykristan on

This study used systemic scar analysis to estimate the frequency of non-lethal entanglements among humpback whales off the coast of Iceland from 2005-2017. Results demonstrate that at least 24.8% of individuals had prior entanglement(s) when first encountered, and then subsequently acquired new entanglement-related injuries at an averafe rate of 1.9% per year; however, scar-based estimates usually underestimate the frequency of prior entanglements. At least some entanglements seem to have occurred locally. 

 

Read More

First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic waters

Submitted by allykristan on

This study used systemic scar analysis to estimate the frequency of non-lethal entanglements among humpback whales off the coast of Iceland from 2005-2017. Results demonstrate that at least 24.8% of individuals had prior entanglement(s) when first encountered, and then subsequently acquired new entanglement-related injuries at an averafe rate of 1.9% per year; however, scar-based estimates usually underestimate the frequency of prior entanglements. At least some entanglements seem to have occurred locally. 

 

Read More

First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic waters

Submitted by allykristan on

This study used systemic scar analysis to estimate the frequency of non-lethal entanglements among humpback whales off the coast of Iceland from 2005-2017. Results demonstrate that at least 24.8% of individuals had prior entanglement(s) when first encountered, and then subsequently acquired new entanglement-related injuries at an averafe rate of 1.9% per year; however, scar-based estimates usually underestimate the frequency of prior entanglements. At least some entanglements seem to have occurred locally. 

 

Read More

First estimates of entanglement rate of humpback whales Megaptera novaeangliae observed in coastal Icelandic waters

Submitted by allykristan on

This study used systemic scar analysis to estimate the frequency of non-lethal entanglements among humpback whales off the coast of Iceland from 2005-2017. Results demonstrate that at least 24.8% of individuals had prior entanglement(s) when first encountered, and then subsequently acquired new entanglement-related injuries at an averafe rate of 1.9% per year; however, scar-based estimates usually underestimate the frequency of prior entanglements. At least some entanglements seem to have occurred locally. 

 

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

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Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More