The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
BIODIVERSITY AND DISTRIBUTION OF DINOFLAGELLATE RESTING CYSTS IN THE SEDIMENTS OF NANJI ISLAND, EAST CHINA SEA
Author(s): 
Pages: 460-467
Year: Issue:  2
Journal: Oceanologia et Limnologia Sinica

Keyword:  Nanji Islanddinoflagellate cystbiodiversitysediment;
Abstract: A survey was conducted in 2014 on seasonal and special distributions of dinoflagellate cysts in sediment near Nanji Island off Wenzhou City, East China. High biological diversity was observed as the area is located between Taiwan Warm Current and Jiangsu / Zhejiang coastal current. Fifty-three species of dinoflagellates were identified microscopically, including 26 species and 10 genera. Among them, Protoperidinium dominated(10 species), followed by Scrippsiella(4), Alexandrium(4), and Gonyaulax(2); and only one species in Lingulodinium, Fragilidium, Pyrophacus, Diplopsalis, Gymnodinium, and Polykrikos. Of the 26 species, the numbers of autotrophic and heterotrophic species were equal; however, the autotrophic species were more abundant, taking up to 79% of all samples. In general, the cysts abundance was relatively low in 2014, ranging from 2 to 33 per m L sediment. Cysts were remarkably higher in summer and autumn, and in open waters than those in spring and the gulf area. Notably, cysts of three toxic dinoflagellates, Alexandrium tamarense/affine, Gonyaulax spinifera, and Lingulodinium polyedra were detected for the first time in the sediment, accounting for 37%, 23%, and 27% of the total cysts abundance in spring, summer and autumn, respectively. The presence of the toxic cysts indicates a potential outbreak risk of their vegetative cells in local coastal area. Our study provides background information for cysts diversity in the area and calls for detailed research in the future.
Related Articles
No related articles found