摘要
根据2007年4月、2008年5月、2009年5月在大亚湾杨梅坑人工鱼礁海域进行的3个春季航次生态、环境综合调查资料,研究了投礁前后杨梅坑海域浮游植物群落结构特征及其年际变动。结果表明,杨梅坑海域共鉴定出浮游植物151种,以硅藻种类最多;调查期间浮游植物种类组成变化不大,但优势种的年际更替明显;丰度呈上升趋势。K优势度曲线的群落多样性分析表明,群落多样性由高到低依次为2008年5月>2007年4月>2009年5月,前后3次调查群落多样性差异较大。聚类(cluster)及多维尺度分析(multidimensional scaling,MDS)显示,3次调查中杨梅坑海域东部、中部、西部的站位倾向于分别聚类在一起,研究的区域可能受海流影响较大;礁区与对照区的差异不明显。冗余分析(redundancy analysis,RDA)表明,水温和水深、盐度、总悬浮物是影响该海域浮游植物栖息密度及空间分布的主要环境因子。
Over three consecutive spring surveys （2007 -2009）, we have investigated the phytoplankton community structure and its inter-annual changes in Yangmeikeng artificial reef area, Daya Bay, South China Sea. We identified a total of 151 phytoplankton spe- cies, among which diatom is the major group. During the three years, the phytoplankton species composition had no significant dif- ferene while the dominant species had undergone significant annual succession; the richness had increased significantly, indicating that the artificial fish reef may have promote phytoplankton＇s growth. The K-dominance curves show that annual variation of phytoplank- ton community diversity is obvious （ May, 2008 〉 April, 2007 〉 May, 2009 ） , which suggests that the phytoplankton community structure is unstable. The cluster and multidimensional scaling analysis （MDS） shows that the eastern, central and western survey sta- tions in the research area tend to cluster together respectively, which indicates that the area could be influenced greatly by current. Additionally, the difference between the reef area and the control area is unobvious, indicating the impact of the artificial reef could spread to the whole survey area due to the area＇s small scope. The redundancy analysis （RDA） shows that temperature, depth, salin- ity and total suspended solids are main environmental factors influencing the phytoplankton density and spatial distribution. In conclu- sion, the artificial reef may have effect on the research area, but the unstable influence needs longer continuous surveillance.
出处
《南方水产科学》
CAS
CSCD
北大核心
2013年第5期109-119,共11页
South China Fisheries Science
基金
农业部南海渔业资源环境科学观测实验站开放课题(SSCS-201106)
国家高技术研究发展计划(863计划)项目(2006AA100303)
公益性行业(农业)科研专项经费项目(201003068)
国家自然科学基金项目(31100362)
关键词
人工鱼礁
浮游植物群落结构
环境因子
大亚湾
artificial reef
phytoplankton community structure
environmental factors
Daya Bay
