Publications by authors named "Matt Lansdell"
The blue shark Prionace glauca is a top predator with one of the widest geographical distributions of any shark species. It is classified as Critically Endangered in the Mediterranean Sea, and Near Threatened globally. Previous genetic studies did not reject the null hypothesis of a single global population.
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- Large scale migrations are crucial for marine species like juvenile southern bluefin tuna (SBT), with the study tracking their annual migration cycle using electronic tagging data.
- Behavior-switching models revealed consistent areas of residency and detailed the movement patterns from feeding grounds in the Great Australian Bight (GAB) to foraging areas in the Indian Ocean and Tasman Sea and back.
- The timing of arrivals to the GAB is linked to prey availability, while departures vary based on the tuna's condition, highlighting the need for effective management strategies due to the economic and ecological significance of SBT in the region.
The impact of seismic surveys on the catchability of marine fish is a contentious issue, with some claims that seismic surveys may negatively affect catch rates. However little empirical evidence exists to quantify the impacts or identify the mechanisms of such impact. In this study, we used a 2-D seismic survey in the Gippsland Basin, Bass Strait, Australia in April 2015 as an opportunity to quantify fish behaviour (field-based) and commercial fisheries catch (desktop study) across the region before and after airgun operations.
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