Barbara has always been fascinated by sharks and rays – especially sawfishes. She wants to share her passion by encouraging people to get involved with citizen science through her project SARA (Sharks and Rays Australia).
I grew up in Austria, a land-locked country in the heart of Europe. My parents love travelling and whenever they could take time off, they would pack the Volkswagen Kombi and drive to the sea with my brother and me. We spent all my childhood summers on the Mediterranean coast and one of my first memories of the ocean – I was too young to remember my age – is from Turkey. My mom left an empty, but not clean, soup can overnight in shallow water. When we returned to it the next day there was an octopus inside. What...
Implement a preliminary tagging study assessing the abundance and distribution of shark-like batoids in the Cairns region of Australia and in two rivers in Cape York, in conjunction with setting up a public outreach project that involves students, the local public and tourists.
Shark-like batoids, including sawfishes and shark rays, are among the most threatened marine fish. The Cairns region in Australia represents one of the last strongholds for these animals and there is a need to combine research on these elasmobranchs with public engagement and education in the area.
All species of sawfish are listed on the IUCN Red List as Critically Endangered, and also on Appendix I of CITES (Convention on International Trade in Endangered Species). In Australia, three out of four sawfish species are listed as vulnerable on the Environment Protection and Biodiversity Conservation Act and possess varying protection in different states. Queensland’s Gulf of Carpentaria is considered one of the last strongholds of sawfishes in the world. But sawfish are also present in small numbers along the east coast of North Queensland, as recent fishery observer data from within the Great Barrier Reef World Heritage Area indicates.
Shark rays Rhina ancylostomata are one of the least studied rays in the world. This is surprising as the animals attain large sizes (in excess of two metres) and inhabit coastal habitats, but may be because of their rarity. A recent analysis of more than 2,000 deployments of BRUVS in the Great Barrier Reef Marine Park reports only nine sightings of shark rays.
The proposed tag-and-release study of sawfish in remote river systems of Cape York will build upon a previous tagging study of sawfish that ended in 2008.
The aims and objectives of this project are to:
By trawling the fish markets and landing sites of Ghana’s coastline, Issah is surveying the patterns in catch composition over time for sharks and rays in artisanal fisheries. In doing so, he is also raising awareness about the best fishing practices that safeguard sharks and rays and garnering fishers’ support for sharks and the conservation of ocean ecosystems in Ghana.
Juan is collecting environmental DNA (eDNA) samples from the estuaries and mangroves of Colombia’s Chocó region. He is uncovering the presence and distribution of largetooth sawfishes on the Colombian Pacific coast by detecting traces of their DNA left behind as signatures in their environment. The Critically Endangered largetooth sawfish – known locally as ‘El Guacapa’ – is typically found in estuaries and thought to be resident in some of Central and South America’s freshwater systems. Knowing exactly where this sawfish occurs is critical to its conservation.
Few data exist to explain where (and how many) sawfishes are still found in Costa Rica. Mario’s
project will use traditional fishing techniques in combination with eDNA (traces of sawfish DNA left behind in the environment) sampling to document where the last habitats for sawfishes can be found in Costa Rica. He hopes to involve community leaders, fishers and local educators in the creation of education programmes that will empower people to conserve sawfishes locally and help inform proper management protocols to save the species.