中国海洋大学学报（自然科学版）2024，Vol.54Issue(1)：113-121,9.DOI:10.16441/j.cnki.hdxb.20220233
黄海微微型浮游植物对灰霾颗粒添加以及光照变化的响应
Response of Picophytoplankton to the Addition of Haze Particles and Change in Light Intensity in the Yellow Sea
摘要
Abstract
A series of on-board incubation experiments were conducted at three sampling stations in the Yellow Sea(YS)during Summer and Autumn of 2020,aiming to explore the effects of haze particle ad-ditions and changes in light intensity(about 40％,68％and 82％light attenuation compared with sea surface light intensity)on the growth,community succession and the ratio of carbon biomass to Chloro-phyll a(Chl a)of picophytoplankton(0.2～2 μm in cell size).The results showed that the picophyto-plankton showed equal or even dominant contribution to the total Chi a,and the dominant groups of pi-cophytoplankton in the initial seawater of all the culture sites were picoeukaryotes and synechococcus.In the middle and north of the Yellow Sea(corresponding to oligotrophic seawaters),the nitrogen supplied by haze particles promoted the increase in Chl a concentration of picophytoplankton(Chl apico)and cell abundance of eukaryotic picophytoplankton and Synechococcus,but the effect of light intensity was not significant.The ratio of carbon biomass(Cpico)and Chl apico(Cpico/Chl apico)decreased with the addition of haze particles and the attenuation of light intensity,which was closely related to the carbon metabo-lism pathway and the extent of photosynthetic pigment synthesis.On the other hand,the ratio of Cpico/Chl apico was mainly regulated by light intensity in the nearshore eutrophic seawaters,which was charac-terized by relatively low light intensity and high turbidity of seawater.Chl apicoo concentration,cell abun-dance,and the ratio of Cpico/Chl apico generally decreased with light attenuation.These results suggests that light intensity had a more obvious effect on the growth of picophytoplankton compared with the ad-dition of haze particles in nearshore eutrophic seawaters.This study revealed the change pattern of Chl apico and carbon biomass of picophytoplankton under the effect of atmospheric deposition and light intensity.关键词
微微型浮游植物/光照/灰霾颗粒/黄海/叶绿素aKey words
picophytoplankton/light/haze particles/the Yellow Sea/Chlorophyll a分类
资源环境引用本文复制引用
潘志伟,张潮,高会旺..黄海微微型浮游植物对灰霾颗粒添加以及光照变化的响应[J].中国海洋大学学报（自然科学版）,2024,54(1):113-121,9.基金项目
国家自然科学基金项目(41876125,U1906215)资助 Supported by the National Natural Science Foundation of China(41876125,U1906215) （41876125,U1906215）
