王英, 张晶晶, 吕其明, 吕振波, 王育红, 高彦洁, 任中华. 调水调沙对黄河口近海浮游植物群落结构时空分布影响[J]. 海洋环境科学, 2021, 40(3): 369-378. DOI: 10.12111/j.mes.20200034
引用本文: 王英, 张晶晶, 吕其明, 吕振波, 王育红, 高彦洁, 任中华. 调水调沙对黄河口近海浮游植物群落结构时空分布影响[J]. 海洋环境科学, 2021, 40(3): 369-378. DOI: 10.12111/j.mes.20200034
WANG Ying, ZHANG Jing-jing, LV Qi-ming, LV Zhen-bo, WANG Yu-hong, GAO Yan-jie, REN Zhong-hua. Effects of water and sediment regulation scheme on phytoplankton community and abundance in the Yellow River Estuary[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2021, 40(3): 369-378. DOI: 10.12111/j.mes.20200034
Citation: WANG Ying, ZHANG Jing-jing, LV Qi-ming, LV Zhen-bo, WANG Yu-hong, GAO Yan-jie, REN Zhong-hua. Effects of water and sediment regulation scheme on phytoplankton community and abundance in the Yellow River Estuary[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2021, 40(3): 369-378. DOI: 10.12111/j.mes.20200034

调水调沙对黄河口近海浮游植物群落结构时空分布影响

Effects of water and sediment regulation scheme on phytoplankton community and abundance in the Yellow River Estuary

  • 摘要: 为了研究调水调沙对黄河口近海海域浮游植物群落结构的影响,于2015年6月16日、7月7日、7月20日及未调水调沙的2016年7月14日,对黄河口近海海域叶绿素a(Chl a)含量、浮游植物群落结构和环境因子的空间分布特征进行了4次综合调查。结果显示,2015年随着调水调沙的进行,调查海域Chl a浓度整体呈现先降低后升高的趋势,在空间上由河口向离岸逐渐递减过渡到整个海域均匀分布;2016年Chl a浓度偏低,高值区主要在南部近岸海域。随着调水调沙的进行,鉴定到的浮游植物种类逐渐递增,浮游植物群落演替明显。舟形藻(Navicula spp.)在4个调查航次均是优势种群,其他优势度较高的浮游植物还有针杆藻(Synedra spp.)、角毛藻(Chaetoceros sp.)、细弱圆筛藻(Coscinodiscus subtilis)、窄隙角毛藻(Chaetoceros affinis)、日本星杆藻(Asterionella japonica)和旋链角毛藻(Chaetoceros curvisetus)。调水调沙前,温度和可溶性无机磷(DIP)是影响浮游植物群落结构的重要因素;调水调沙中,可溶性无机氮(DIN)、DIP和DIN/DIP影响逐渐增高;调水调沙后,可溶性无机硅(DSi)、DSi/DIN和温度的影响最明显。

     

    Abstract: The temporal and spatial distribution of chlorophyll a (Chl a), phytoplankton community and environmental factors in the Yellow River Estuary were investigated on four ecological surveys, with the purpose of understanding the effect of Water and Sediment Regulation Scheme (WSRS) on phytoplankton community and abundance. Four surveys were conducted on the 16th of June, 7th and 20th of July in 2015 (WSRS year) and on the 14th of July in 2016 (normal year without WSRS). The concentration of Chl a showed an increasing trend from before to during phase of WSRS, followed by a decline at the after phase. The spatial distribution of Chl a displayed a decreasing trend from inshore to offshore before WSRS to uniform distribution after WSRS. The concentration of Chl a in 2016 was much lower compared with similar period of 2015, and the high value area distributed in the southern inshore area. The identified species of phytoplankton increased along with the progress of WSRS, and an obvious succession of phytoplankton community were observed in the study area. Navicular spp. was the dominant species in all four survey, and other dominant species were Synedra spp., Chaetoceros sp., Coscinodiscus subtilis, Chaetoceros affinis, Asterionella japonica and Chaetoceros curvisetus respectively. Temperature and dissolved inorganic phosphorus (DIP) were the most important environmental factors affecting phytoplankton community and abundance before WSRS, while the influence of dissolved inorganic nitrogen (DIN), DIP and DIN /DIP increased during WSRS, and the dissolved inorganic silicon (DSi), DSi/DIN and temperature became the key environmental factors after WSRS.

     

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