Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Guangdong Provincial Key Laboratory of Applied Marine Biology (LAMB), Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), China; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China.
Key Laboratory of Tropical Marine Bio-resources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
Mar Pollut Bull. 2021 Jun;167:112331. doi: 10.1016/j.marpolbul.2021.112331. Epub 2021 Apr 13.
Daya Bay is a eutrophic coastal region with dynamic physico-chemical conditions influenced by terrestrial inputs and seawater intrusion. Zooplankton is a crucial trophic intermediary for energy transfer and fishery resources. In this study, we assessed the distribution and composition of zooplankton in Daya Bay during summer and winter of 2015. We found that zooplankton diversity was the lowest and dominated by small copepods (Acartia spp. and Paracalanus spp.) and gelatinous Oikopleura spp. under terrestrial inputs in the Dan'ao River estuary and Aotou barbour. The highest zooplankton diversity was observed at the bay mouth that influenced by salty intruded seawater, and the dominant oceanic species (such as Euchaeta concinna and Subeucalanus subcrassus invaded into the top of the bay in winter. The dominant species in the estuary shift from Penilia avirostris to Acartia spp. compared with historical researches, indicating the effect of human activities on the succession of dominant species.
大亚湾是一个富营养化的沿海地区，其理化条件具有动态变化的特点，受到陆地输入和海水入侵的影响。浮游动物是能量传递和渔业资源的重要营养中间环节。本研究于 2015 年夏季和冬季评估了大亚湾浮游动物的分布和组成。结果表明，在丹灶河河口和澳头岬附近，陆地输入会导致浮游动物多样性最低，小型桡足类（真刺唇角水蚤和帕拉胶磷虾）和胶状的 Oikopleura spp. 占优势。在受咸水入侵影响的湾口处，浮游动物多样性最高，冬季优势海洋物种（如中华哲水蚤和拟长腹剑水蚤）入侵到湾顶。与历史研究相比，河口的优势种已从糠虾属的无眼端足类转变为真刺唇角水蚤，表明人类活动对优势种演替的影响。
