生态学杂志2018，Vol.37Issue(3)：906-913,8.DOI:10.13292/j.1000-4890.201803.006
獐子岛海域冬季分级叶绿素a的分布特征及其影响因素
Distribution pattern and impact factors of chlorophyll a of size-fractionated phytoplankton in winter in the sea near Zhangzidao Island
摘要
Abstract
We investigated the distribution of chlorophyll a of size-fractioned phytoplankton in the sea near Zhangzidao Island in January,2016.Correlations of the concentrations of chlorophyll a and multiple environmental factors were explored to determine the main impact factors.Our results showed that,in the surface layer,the concentrations of chlorophyll a of total phytoplankton,microplankton,nanoplankton and picoplankton ranged 0.24-0.92,0.15-0.58,0.09-0.46 and 0-0.03 μg · L-1,respectively,with averaged concentrations being 0.69,0.36,0.33 and 0.002 μg · L-1.Contributions of microplankton,nanoplankton,and picoplankton to total chlorophyll a were 51.72％,48.01％,and 0.26％,respectively.In the bottom layer,picoplankton was not found.The concentrations of chlorophyll a of total phytoplankton,microplankton and nanoplankton in the bottom layer ranged 0.29-1.77,0.12-1.45,0.17-0.50 μg · L-1,respectively,with mean concentrations being 0.78,0.43,and 0.34 μg · L-1.Contributions of chlorophyll a of microplankton and nanoplankton to total chlorophyll a were 52.97％ and 47.03％,respectively.There was no significant difference in the concentrations of chlorophyll a of total phytoplankton,microplankton and nanoplankton between the surface and bottom layers (all P＜0.01,paired t test),indicating a homogeneously vertical distribution.Horizontal distributions of chlorophyll a of total phytoplankton,microplankton and nanoplankton also showed a homogenous pattern,with concentrations all gradually decreasing from the northwest to the south.Results from the redundancy analysis showed that temperature,salinity,dissolved oxygen,particulate organic matter,NO2--N and NH4+-N were main impact factors driving the distribution of chlorophyll a of phytoplankton.关键词
浮游植物/叶绿素a/粒级结构/环境因子/獐子岛Key words
phytoplankton/chlorophyll a/size fraction/environmental factor/Zhangzidao Island引用本文复制引用
吴文广,张继红,刘毅,王巍..獐子岛海域冬季分级叶绿素a的分布特征及其影响因素[J].生态学杂志,2018,37(3):906-913,8.基金项目
中国水产科学研究院基本科研业务费(2014A01YY01)、国家“十二五”科技支撑计划课题(2011BAD13B06)和国家自然科学基金(41276172)、黄海水产研究所基本科研业务费(2060302201517102-2)资助. （2014A01YY01）
