浯溪口浮游植物优势种生态位的变化及种间联结性  

Niche change and interspecific association of dominant phytoplanktonspecies in Wuxikou

作　　者：黄学平[1] 陈子悦 何国庆 廖伟东 姚元勋 秦朗 HUANG Xueping;CHEN Ziyue;HE Guoqing;LIAO Weidong;YAO Yuanxun;QIN Lang(School of Civil and Architectural Engineering,Nanchang Institute of Technology,Nanchang 330000,China;School of Civil Engineering,Jiangxi Institute of Engineering,Xinyu 338000,China)

机构地区：[1]南昌工程学院土木与建筑工程学院,南昌330000 [2]江西工程学院土木工程学院,新余338000

出　　处：《生物学杂志》2023年第5期61-68,共8页Journal of Biology

基　　金：国家自然科学基金资助项目(51568048)。

摘　　要：为研究昌江流域浯溪口水利枢纽蓄水后3种水情期浮游植物群落结构变化趋势,对浮游植物优势种生态位、种间联结性和水质变化动态进行研究,在2021年3月(平水期)、6月(丰水期)、11月(枯水期)对9个采样点的浮游植物进行分析。结果表明:浮游植物优势种4门27种,其中,颗粒直链藻在3个水情期中均为优势种;11月调查出现的分歧锥囊藻指示水质状态为οs型,可能出现水质呈贫营养的变化动态,但整体来看流域呈中营养状态;根据优势种的生态位宽度和生态位重叠指数,划分为3类对资源利用能力不同的藻种。此外,根据统计量检验结果显示,浮游植物总体呈显著正相关,联结性显著的有11对,关联显著率为6.18%,可能是由于蓄水对浮游植物物种多样性的影响使得群落结构处在初、中期发展阶段。In order to study the ecological niche and interspecies association of dominant phytoplankton species after impounding of Wuxikou Water Conservancy Project in Changjiang River Basin,phytoplankton samples from nine sampling sites were studied in three different water situation periods in March(normal period),June(wet period)and November(dry period)2021.The results showed that there were 27 dominant phytoplankton species in 4 phyla.Among them,Melosira granulata was the dominant species in all three situation periods,divided into widespread species.The appearance of Dinobryon divergens in November indicated that the water quality wasοs type,showing a dynamic of poor nutrition,but the watershed in moderate condition.According to the niche breadth and niche overlap index of the dominant species,they were divided into three species with different resource utilization abilities.In addition,according to the results of statistical test,phytoplankton showed a significant positive correlation.The association was significant in 11 pairs.The significant rate of association was 6.18%.This may be due to the effect of water storage on phytoplankton species diversity,which makes the community structure in the early and middle stages of development.

关 键 词：浮游植物 生态位宽度 生态位重叠指数 种间联结性 

分 类 号：X524[环境科学与工程—环境工程]