Unanswered Forum Topics

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

This summary study used hierarchical Bayesian modeling to quantify the relationship between entanglement injury/severity with North Atlantic right whale survival, reproduction and population health. Results show that entanglement negatively affects both reproductive and non-reproductive groups, compromises individual health even when gear is not present, reduces survival (especially in females), and reduces fecundity in females that do survive. 

This summary study used hierarchical Bayesian modeling to quantify the relationship between entanglement injury/severity with North Atlantic right whale survival, reproduction and population health. Results show that entanglement negatively affects both reproductive and non-reproductive groups, compromises individual health even when gear is not present, reduces survival (especially in females), and reduces fecundity in females that do survive. 

This summary study used hierarchical Bayesian modeling to quantify the relationship between entanglement injury/severity with North Atlantic right whale survival, reproduction and population health. Results show that entanglement negatively affects both reproductive and non-reproductive groups, compromises individual health even when gear is not present, reduces survival (especially in females), and reduces fecundity in females that do survive. 

This summary study used hierarchical Bayesian modeling to quantify the relationship between entanglement injury/severity with North Atlantic right whale survival, reproduction and population health. Results show that entanglement negatively affects both reproductive and non-reproductive groups, compromises individual health even when gear is not present, reduces survival (especially in females), and reduces fecundity in females that do survive. 

This summary study used hierarchical Bayesian modeling to quantify the relationship between entanglement injury/severity with North Atlantic right whale survival, reproduction and population health. Results show that entanglement negatively affects both reproductive and non-reproductive groups, compromises individual health even when gear is not present, reduces survival (especially in females), and reduces fecundity in females that do survive. 

This summary study used hierarchical Bayesian modeling to quantify the relationship between entanglement injury/severity with North Atlantic right whale survival, reproduction and population health. Results show that entanglement negatively affects both reproductive and non-reproductive groups, compromises individual health even when gear is not present, reduces survival (especially in females), and reduces fecundity in females that do survive. 

This research investigates the overlap of potentially illegal longlining efforts and their effects on the average risk of albatrosses. Results indicate that albatrosses are at particularly higher risk in areas where illegal longlining vessels are found, and that those vessels are spatially concentrated to areas of the highest concentrations of CRAAVED (concealable, removable, abundant, accessible, valuable, enjoyable, disposable) fish species.

This study was a controlled experiment within in a harbor that investigated the effectiveness of attaching small, reflective objects (8mm wide acrylic glass spheres) to standard gillnets to increase acoustic reflectivity and therefore mitigate bycatch of small, echolocating cetaceans.  The study found that the spheres increased the acoustic backscattering strength and echo, which suggests that the spears would be an effective way to reduce small cetacean bycatch. Gillnets with sphere-sphere distance of 20cm performed best.