首页 | 本学科首页   官方微博 | 高级检索  
     检索      

海州湾前三岛人工鱼礁区浮游植物群落组成及与环境因子的关系
引用本文:刘长东,郭晓峰,唐衍力,盛化香,黄六一.海州湾前三岛人工鱼礁区浮游植物群落组成及与环境因子的关系[J].中国水产科学,2015,22(3):545-555.
作者姓名:刘长东  郭晓峰  唐衍力  盛化香  黄六一
作者单位:中国海洋大学水产学院海洋渔业系
基金项目:国家公益性行业(农业)科研专项经费项目(201203018)
摘    要:通过2012年9月至2013年8月对海州湾前三岛人工鱼礁及邻近海域浮游植物4个航次的调查,共鉴定出浮游植物3门35属85种,其中硅藻门67种,甲藻门17种,金藻门1种。春、秋季全区浮游植物丰度(分别为16.5×105、13.31×105 cell/m3)明显高于夏、冬季(分别为6×105、3.8×105 cell/m3)。主要优势种有密联角毛藻(Chaetoceros densus)、深环沟角毛藻(Chaetoceros constrictus)、拟旋链角毛藻(Chaetoceros pseudocurvisetus)、细弱圆筛藻(Coscinodiscus subtilis)、明璧圆筛藻(Coscinodiscus debilis)、卡氏角毛藻(Chaetoceros castracanei)、旋链角毛藻(Chaetoceros curvisetus)、柔弱角毛藻(Chaetoceros debilis)等,其中密联角毛藻为春季的绝对优势种。除春季鱼礁区与对照区浮游植物多样性指数和均匀度指数存在显著性差异外,其他季节的鱼礁区与对照区浮游植物群落参数(浮游植物种类数、细胞丰度、叶绿素a浓度、丰富度指数、多样性指数和均匀度指数)均无显著性差异(P0.05),但不同季节间浮游植物群落参数存在显著差异(P0.01)。环境因子在鱼礁区与对照区不存在显著差异(P0.05),但不同季节间存在显著差异(P0.05)。多维尺度和聚类分析表明,浮游植物的群落组成存在明显的季节差异,但区域间无显著差异(P0.05)。人工鱼礁区与对照区相似的浮游植物群落结构可能是由于对照区与鱼礁区相距较近、调查范围小、水较深、采样站位靠近岛屿及人工鱼礁投放时间较短等因素引起的。冗余分析(redundancy analysis,RDA)结果表明,影响浮游植物群落的主要环境因子依次为:温度、Si O3-Si、溶解氧(DO)、PO4-P、生化需氧量(BOD5)、可溶无机氮(DIN)、化学需氧量(COD)和透明度。

关 键 词:浮游植物  人工鱼礁  环境因子  冗余分析  海州湾
修稿时间:2015/5/12 0:00:00

Phytoplankton community composition and its relationship with en- vironmental factors in the artificial reef area around the Qiansan Is- lets, Haizhou Bay
LIU Changdong,GUO Xiaofeng,TANG Yanli,SHENG Huaxiang,HUANG Liuyi.Phytoplankton community composition and its relationship with en- vironmental factors in the artificial reef area around the Qiansan Is- lets, Haizhou Bay[J].Journal of Fishery Sciences of China,2015,22(3):545-555.
Authors:LIU Changdong  GUO Xiaofeng  TANG Yanli  SHENG Huaxiang  HUANG Liuyi
Institution:LIU Changdong;GUO Xiaofeng;TANG Yanli;SHENG Huaxiang;HUANG Liuyi;Ocean Fisheries Department, Fisheries College, Ocean University of China;
Abstract:

  As primary producers, phytoplankton play an important role in ensuring the laws of material recycling and energy flow in aquatic ecosystems. Phytoplankton abundance and community structure are indicators of the marine en- vironment. Thus, they influence fisheries resources through a bottom-up effect. The Qiansan Islets have been rich in fisheries resources for a long time, but over-fishing and environmental degradation have put tremendous pressure on this marine ecosystem in recent years. Thus, the local government conducted an artificial reef construction project beginning in 2005 to improve the marine environment and enhance fisheries resources. In this study, we used multivariate statistical analysis to compare phytoplankton community structure at different times (four seasons) and locations (artificial reef and control areas) to assess primary production in this region after constructing an artificial reef. Four cruise survey samplings were carried out at the artificial reef island and the adjacent waters around the Qiansan Islets in Haizhou Bay from September 2012 to August 2013. Eighty-five species in 35 genera and three phyla were identified, including 67 species of Bacillariophycophyta, 17 species of Pyrrophycophyta, and one species of Chryso- phycophta. Phytoplankton abundance values in spring and autumn (16.5 ? 105 and 13.31 ? 105 cells/m3, respectively) were significantly higher than those in summer and winter (6 ? 105 and 3.8 ? 105 cells/m3, respectively). The dominant species included Chaetoceros densus, Chaetoceros constrictus, Chaetoceros pseudocurvisetus, Coscinodiscus subtilis var. subtilis, Coscinodiscus debilis, Chaetoceros castracanei, Chaetoceros curvisetus, and Chaetoceros debilis. C. den- sus was the most dominant species in the spring. Phytoplankton community parameters (species number, abundance, chlorophyll a concentration, Margalef’s richness, Shannon-Wiener diversity, and the Pielou evenness index) were not significantly different (P>0.05) between the reef and control areas, except the Shannon–Wiener diversity and the Pielou evenness indices in spring, but significant differences were found among seasons (P<0.01). Environmental factors were also significantly different seasonally, but no differences were found between the reef and control areas. Multidimen- sional scaling and cluster analyses showed that phytoplankton community composition was very similar between areas but significantly different among seasons. The similar phytoplankton community structure was probably due to the close proximity of the reef to the control area, the small scale and deep water in the sampling area, the sampling sites’ close proximity to the island, and the short settling time of the artificial reef. A redundancy analysis showed that tem- perature, SiO3-Si, dissolved oxygen, PO4-P, BOD5, dissolved inorganic nitrogen, chemical oxygen demand, and trans- parency were the main factors influencing the phytoplankton community. 

Keywords:phytoplankton  artificial reef  environmental variable  redundancy analysis  Haizhou Bay
本文献已被 CNKI 等数据库收录!
点击此处可从《中国水产科学》浏览原始摘要信息
点击此处可从《中国水产科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号