摘要
为揭示白洋淀浮游动物群落结构动态特征及其与水环境因子的关系,于2009—2010年和2018—2019年对白洋淀浮游动物及水环境因子进行6次调查,采用生态位指数、冗余分析(RDA)等方法对白洋淀浮游动物群落结构变化、优势种生态位分化及其与水环境因子的关系进行研究。结果显示:白洋淀浮游动物物种数从2009年的56种减少至2019年的43种,密度从3.64×10^3 ind·L^-1下降至1.70×10^3 ind·L^-1,且物种组成相似度极低;共同优势种为针簇多肢轮虫(Polyarthra trigla)、角突臂尾轮虫(Brachionus angularis)及螺形龟甲轮虫(Keratella cochlearis),其生态位宽度分别增加了7.79%、9.76%和22.11%;优势种平均生态位重叠指数增加了35.26%,优势种间高度重叠(Oik>0.6)的种对数量占比增加了30.08%。RDA分析表明,pH、总氮(TN)和溶解氧(DO)始终是影响白洋淀浮游动物群落结构的主要水环境因子。
This study aims to understand the dynamic characteristics of zooplankton community and its relationship with water environmental factors in Baiyangdian Lake.Six surveys of zooplankton and water environmental factors were conducted from August 2009 to March 2010 and November 2018 to June 2019 in the lake.Based on the niche index and redundancy analysis(RDA),we analyzed the dynamic structure and niche differentiation among the dominant species of zooplankton and their relationship with water environmental factors.The results recognized a total of 56 species of zooplankton in 2009 and 43 species in 2019.Meanwhile,the individuals were reduced to 1.70×10^3 ind·L^-1 in 2019 from 3.64×10^3 ind·L^-1 in 2009,and their composition varied greatly.Polyarthra trigla,Brachionus angularis,and Keratella cochlearis were the dominant species in the two periods and their niche breadth increased by 7.79%,9.76%,and 22.11%,respectively.The average niche overlap of the dominant species increased by 35.26%and the species pairs with Oik>0.6 increased by 30.08%.Results of RDA demonstrated that pH,total nitrogen,and dissolved oxygen were the significant factors directly affecting zooplankton community structures in Baiyangdian Lake.
作者
付显婷
杨薇
赵彦伟
徐菲
FU Xian-ting;YANG Wei;ZHAO Yan-wei;XU Fei(State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing 100875,China;Beijing Municipal Research Institute of Environmental Protection,Beijing 100037,China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2020年第6期1271-1282,共12页
Journal of Agro-Environment Science
基金
国家水体污染控制与治理科技重大专项(2018ZX07110001)
国家重点研发计划项目(2017YFC0404505)。
关键词
浮游动物
群落结构
生态位指数
水环境因子
冗余分析
白洋淀
zooplankton
community structure
niche index
water environmental factor
redundancy analysis
Baiyangdian Lake
