College of Marine Life Sciences and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China; Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
College of Marine Life Sciences and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao 266003, China; Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China; Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing 210042, China.
Mar Pollut Bull. 2024 Aug;205:116560. doi: 10.1016/j.marpolbul.2024.116560. Epub 2024 Jun 18.
The characteristics and influencing factors of phytoplankton assemblages were analyzed in July (rainy season) and November (dry season) 2022 in the Qiongzhou Strait, China. A total of 68 species of phytoplankton belonging to 33 genera and 3 phyla were recorded. Diatom was the most dominant group. The broad-temperature widespread species were the most abundant. The dominant species in the rainy season were Skeletonema costatum, S. tropicum, Chaetoceros preseudocurvisetus and Thalassionema nitzschioides while those in the dry season were T. frauenfeldii, T. nitzschioides and Coscinodiscus granii. Phytoplankton cell abundance was significantly positively correlated with nitrite and total nitrogen concentrations, and negatively correlated with temperature and pH. Red tide algae occurred with high frequency. All sites were at eutrophic level except for 3 sites in the rainy season, which were at mesotrophic level. Therefore, there is a potential risk of red tides in the Qiongzhou Strait, which requires long-term monitoring and precautions.
对 2022 年 7 月（雨季）和 11 月（旱季）琼州海峡浮游植物群落的特征及其影响因素进行了分析。共记录到浮游植物 68 种，隶属于 33 属 3 门。硅藻是最占优势的类群。广温广布种最为丰富。雨季的优势种为中肋骨条藻、热带骨条藻、拟旋链角毛藻和柔弱根管藻，旱季的优势种为三角褐指藻、柔弱根管藻和颗粒直链藻。浮游植物细胞丰度与亚硝酸盐和总氮浓度呈显著正相关，与温度和 pH 值呈显著负相关。赤潮藻类频繁出现。除雨季的 3 个站点处于中营养水平外，其余所有站点均处于富营养化水平。因此，琼州海峡存在赤潮的潜在风险，需要长期监测和预防。
