Physicochemical conditions in affecting the distribution of spring phytoplankton community

• Published in: Chinese journal of oceanology and limnology 2017-11, Vol.35 (6), p.1342-1361
• Main Authors: 魏玉秋, 刘海娇, 张晓东, 薛冰, MUNIR Sonia, 孙军
• Format: Article
• Language: English
• Subjects: Adaptability; Bacillariophyceae; Bacillariophyta; Communities; Cruises; Current distribution; Diatoms; Dinoflagellata; Dinoflagellates; Dominant species; Earth and Environmental Science; Earth Sciences; Ecological effects; Ecology; Eutrophic environments; Eutrophic waters; Eutrophication; High frequency; Horizontal distribution; Marine microorganisms; Microorganisms; Mineral nutrients; Nutrient availability; Nutrients; Oceanography; Phosphates; Physicochemical processes; Physicochemical properties; Phytoplankton; Plankton; Protoperidinium; Pyrrophycophyta; Taxa; Turbulence; Vertical distribution; Water analysis; Water masses; Water sampling; 养分有效性; 浮游植物群落; 理化参数; 生态省; 硅藻门; 群落分布; 裸甲藻; 黄海暖流
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/s00343-017-6190-6

To better understand the physicochemical conditions in affecting regional distribution of phytoplankton community, one research cruise was carried out in the Bohai Sea and Yellow Sea during 3^rd and 23^th May, 2010. The phytoplankton community, including Bacillariophyta （105 taxa）, Pyrrophyta （54 taxa）, Chrysophyta （1 taxon） and Chlorophyta （2 taxa）, had been identified and clearly described from six ecological provinces. And, the six ecological provinces were partitioned based on the top twenty dominant species related with notable physicochemical parameters. In general, the regional distributions of phytoplankton ecological provinces were predominantly influenced by the physicochemical properties induced by the variable water masses and circulations. The predominant diatoms in most of water samples showed well adaptability in turbulent and eutrophic conditions. However, several species of dinoflagellates e.g., Protoperidinium conicum, Protoperidinium triestinum, Protoperidinium sp. and Gymnodinium lohmanni preferred warmer, saltier and nutrient-poor environment. Moreover, the dinoflagellates with high frequency in the Yellow Sea might be transported from the Yellow Sea Warm Current. The horizontal distribution of phytoplankton was depicted by diatoms and controlled by phosphate concentration, while the vertical distribution was mainly supported by light and nutrients availability in the subsurface and bottom layers, respectively.