Exploring and Exploiting Deep-Ocean Biodiversity Hotspots

Seabed Habitats Seminar By Prof. Alex David Rogers

Science Director, REV Ocean

We now understand that the deep sea presents a rich and heterogenous environment which plays an important role in the Earth system. Through my own research expeditions, I will focus on two habitats in the deep sea, hydrothermal vents and seamounts. The former is characterised by a highly endemic fauna adapted to extreme conditions and now recognisable as forming 11 distinct biogeographic provinces. The latter is less well explored but characterised by a rich biodiversity as well as being hotspots of activity in the deep sea. Human activities have already impacted seamounts through impacts from deep-sea bottom trawling and the effects of pollution and climate change are already being felt in the deep sea. However, a controversial new activity, deep-sea mining may affect both hydrothermal vents and seamounts as well as abyssal habitats. Some of the new studies on the Clarion Clipperton Fracture Zone, an area that is of high interest for marine mining are now revealing a more diverse and heterogeneously distributed fauna than previously realised. What this means for management of mining and other human activities in the deep sea will be discussed.

Biography: Professor Alex David Rogers

Science Director, REV Ocean, Norway

Visiting Professor, Department of Zoology, University of Oxford

Alex is a marine ecologist who is interested in how biodiversity is distributed in the ocean, especially in the deep sea and on tropical coral reefs. He is also interested in human impacts on the ocean and how to manage human activities to mitigate or reduce degradation of marine ecosystems. His work has taken him to the Atlantic, Indian and Southern Oceans and to the Caribbean investigating coral reef ecosystems, seamounts and deep-sea hydrothermal vents. Alex has worked with governments, intergovernmental and non-governmental organisations in publicising human impacts, especially those from deep-sea fishing and climate change, and on the development of policy solutions to such problems. He is Scientific Director of REV Ocean a foundation working towards a healthy ocean. Alex recently published the book The Deep: The Hidden Wonders of Our Ocean and How We Can Protect Them Wildfire (2019).

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