Scientists off the coast of the United Kingdom conducted a three-year survey of marine life in Sussex using baited remote underwater video (BRUV) and environmental DNA (eDNA) techniques. The survey identified 81 different species living off the coast, including eels, sharks, and fish. One of the cameras captured a rare tope shark, a migratory species with blade-like teeth that can reach up to 6 feet in length. Researchers also found the eDNA of the critically endangered European eel, although it was not seen on camera.
The study found that eDNA detected almost three times as many species as BRUV surveys, although BRUV surveys were more affordable. The researchers recommended utilizing both methods in tandem for future biodiversity monitoring in the area. This survey provides a baseline of the marine vertebrate community in Sussex Bay, offering important insights into the diverse marine life in the region. The research team included several scientists led by Alice Clark, who expressed surprise at the variety of species discovered in the area.
The tope shark and European eel were considered surprising finds in the Sussex waters, showcasing the importance of using multiple survey techniques to uncover the full extent of marine biodiversity. The tope shark, often sought out as a food source, was seen approaching the baited camera with its blade-like teeth visible. The eDNA of the European eel, a critically endangered species, was detected in the water samples collected during the survey. Both findings highlight the value of comprehensive marine surveys in understanding and protecting diverse ecosystems.
The researchers noted that the Sussex coastline is more diverse than previously thought, with the survey revealing a wide range of marine species in the area. The study highlighted the importance of ongoing monitoring and conservation efforts to preserve the biodiversity of Sussex Bay and ensure the long-term health of the marine ecosystem. The findings also underscored the need for continued research and exploration of underwater environments to better understand the complex interactions between different species and their habitats.
The research team concluded that the combination of BRUV surveys and eDNA analysis provided a comprehensive and cost-effective approach to studying marine biodiversity. By utilizing both techniques, scientists were able to uncover unexpected species and gain a better understanding of the marine environment in Sussex. The study recommended that future biodiversity monitoring efforts in the region incorporate both BRUV surveys and eDNA analysis to capture a more complete picture of the diverse marine life present.
Overall, the study in Sussex Bay provided valuable insights into the marine vertebrate community, including rare and endangered species like the tope shark and European eel. By combining different survey techniques and methods, researchers were able to document a wide range of marine life and contribute to ongoing efforts to monitor and protect marine biodiversity. The findings highlight the importance of conservation efforts and continued research to safeguard the diverse ecosystems of Sussex and other coastal regions around the world.
