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  • This record provides an overview of the NESP Marine and Coastal Hub Research Plan 2023 project "Eastern Grey Nurse Shark population abundance and trend". For specific data outputs from this project, please see child records associated with this metadata. -------------------- The eastern population of grey nurse shark, Carcharius taurus, is listed as Critically Endangered under the EPBC Act 1999, and a strategy to ensure recovery was implemented in 2002 with the development of the first recovery plan. The recovery plan updated in 2014 identifies priorities that require ongoing research that form the basis of this proposed project. This includes research to refine the abundance and trend estimate for the eastern Australian population of grey nurse shark and examine the potential for range expansion into Victorian waters. This will add value to recent age and growth estimates and examine epigenetic ageing of juveniles. Such information is important to inform the assessment of current conservation arrangements such as spatial closures. Outputs • Tissue samples and extracted products from juvenile grey nurse sharks [dataset] • Final project report [written]

  • This record provides an overview of the NESP Marine and Coastal Hub Research Plan 2024 project "Grey Nurse Shark aggregations". For specific data outputs from this project, please see child records associated with this metadata. -------------------- The grey nurse shark (Carcharias taurus) has been protected in Australian Commonwealth waters since 1996. Although historically distributed across southern Australia, in October 2001 the grey nurse shark was listed as two separate populations with different protection listings under the EPBC Act of 1999: Critically Endangered in eastern Australia, and Vulnerable in Western Australia. Grey nurse sharks (GNS) tend to aggregate at specific sites along migration routes. There are currently 19 identified key aggregation sites along the eastern seaboard. Recent observations indicate that this definition requires revision to account for factors such as seasonal movements and to be applicable to the Western Australian population. This project aims to collate existing information on key aggregation sites and ‘new’ sites where GNS have been found to gather (both in eastern and western Australia). This information will be used to refine the definition of key aggregation site and develop criteria to allow assessment of new sites. This project will also investigate potential sites in Victoria where the least amount of information is available. Outputs • Spatial information on key Grey Nurse Shark aggregation sites [dataset] • Final project report [written]