Marine fauna

Our recent four-year MTSRF project demonstrated significant export of larvae of the inshore coral trout species (Plectropomus maculatus) from existing no-take marine reserves (green zones) in the Keppel Island group on the Great Barrier Reef (GBR). In addition, no-take reserves were shown to make a disproportionately large contribution to recruitment in fished areas (blue zones) at this location.

Spatial zoning for multiple-use is the cornerstone of management for the Great Barrier Reef Marine Park (GBRMP). Multiple-use zoning was first implemented widely in the GBRMP in the late 1980s and this original zoning plan was in place until 2004, when the marine park was completely rezoned under the Representative Areas Program (RAP).

Sharks play an important role in marine ecosystems but are facing increasing pressure from fishing and other anthropogenic factors. Along the Queensland coast inshore waters play an important role as nursery areas for sharks. However, the same inshore waters are also most prone to fisheries exploitation and effects of freshwater discharge from coastal streams and rivers. This project will examine the importance of different types of inshore habitat (protected bay vs.

Large predatory fish are essential to a balanced marine ecosystem and also form the basis of important commercial and recreational fisheries. Sustainable fisheries and sustainable ecosystems require that management is able to achieve a balance between these divergent needs. The large size of many of these predators means that they often are highly mobile. This mobility complicates the management of these species, especially in regions such as the Great Barrier Reef, where there is a complex mosaic of open and closed areas.

Project 2.1 will use monitoring, genetics, state-of-the-art tracking and remote sensing to develop, (a) an understanding of the status of marine turtles, (b) a detailed understanding of turtle and dugong spatial ecology, plus the threats to these populations, and (c) dugong population assessments. The project will both improve stakeholder understanding, capacity and skills to better manage priority species and provide valuable data that is useable and understandable to those making decisions regarding turtle and dugongs.

Marine wildlife are significant components of the Great Barrier Reef World Heritage Area’s biodiversity and are threatened by a variety of anthropogenic pressures. In particular, populations of inshore dolphins are very small and at risk, there are serious concerns for dugong populations along the urban coast (south of Cooktown) and marine turtles are listed as threatened species and are at risk along the Queensland coast due to coastal change.

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