Lu Xinxin, Wang Zhaohui, Guo Xin, Gu Yangguang, Liang Weibiao, Liu Lei
College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
College of Life Science and Technology, Jinan University, Guangzhou 510632, China.
Mar Pollut Bull. 2017 Jul 15;120(1-2):239-249. doi: 10.1016/j.marpolbul.2017.05.032. Epub 2017 May 17.
Fifty-one surface sediment samples were collected from eleven sea areas along the Guangdong coast in southern China. Biogenic elements, metals and dinoflagellate cysts were analyzed. Twenty-one cyst taxa in 12 genera were identified. The cyst concentrations ranged between 14 and 250 cysts/g, with an average of 69 cysts/g. The low cyst production was caused by coarse sediments, high sedimentation rates, and high anthropogenic disturbances. Biogenic elements were comparable with those reported. However, the metal concentrations were far lower than the sediment quality guidelines. Both biogenic elements and metals were higher in the Mid Coast and lower in the Western Coast. Eutrophication slightly enhanced the productivity of autotrophic dinocysts, and cysts of Scrippsiella indicated eutrophication. Cd had inhibitory effects on cyst production. Alexandrium and Diplopsalis cysts were sensitive to metal contamination; however, Gyrodinium, Pheopolykrikos, and Lingulodinium cysts had high resistance to metal contamination.
在中国南方广东沿海的11个海域采集了51个表层沉积物样本。对生物源元素、金属和甲藻孢囊进行了分析。鉴定出12个属中的21个孢囊分类单元。孢囊浓度在14至250个孢囊/克之间，平均为69个孢囊/克。孢囊产量低是由粗颗粒沉积物、高沉积速率和高人为干扰造成的。生物源元素与报道的结果相当。然而，金属浓度远低于沉积物质量指南。生物源元素和金属在中部海岸较高，在西部海岸较低。富营养化略微提高了自养甲藻孢囊的生产力，斯克里普藻属的孢囊表明存在富营养化。镉对孢囊产量有抑制作用。亚历山大藻属和双皮藻属的孢囊对金属污染敏感；然而，陀螺藻属、多环藻属和拟菱形藻属的孢囊对金属污染具有高抗性。
