Abstract
1 Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, People's Republic of China
2 Division of Environmental Science and Engineering, The National University of Singapore, Singapore
3 Department of Biology, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong SAR, People's Republic of China
4 Microbial Ecology and Biogeochemistry Group, Laboratoire d'Océanographie de Villefranche-sur-Mer, Villefranche-sur-Mer, France