[1] Natl Engn Res Ctr Gas Hydrate Explorat & Dev, Guangzhou, Peoples R China
[2] Guangzhou Marine Geol Survey, Key Lab Marine Mineral Resources, Guangzhou, Peoples R China
[3] UCL Univ Coll London, Environm Change Res Ctr, Dept Geog, London, England
[4] Nat Hist Museum, Dept Bot, London, England