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| 天津大神堂海域人工鱼礁区砂壳纤毛虫群落的季节变化 |
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于莹1, 徐晓甫2, 王硕2, 张博伦2, 张武昌3,4,5
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1.泰山学院, 山东 泰安 271000;2.天津市水产研究所, 天津 300457;3.中国科学院海洋研究所 中国科学院海洋生态与环境科学重点实验室, 山东 青岛 266071;4.青岛海洋科学与技术(试点)国家实验室, 海洋生态与环境科学功能实验室, 山东 青岛 266237;5.中国科学院 海洋大科学研究中心, 山东 青岛 266071
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| 摘要: |
| 于2015年夏季、秋季和2016年春季在天津大神堂海域人工鱼礁区进行砂壳纤毛虫群落的调查。3个季节共鉴定出砂壳纤毛虫10属31种，拟铃虫属（Tintinnopsis）种类最多，夏季砂壳纤毛虫种类最多。砂壳纤毛虫丰度、生物量和群落多样性指数存在明显的季节差异。砂壳纤毛虫丰度夏季最高[（379±355）个/L]，秋季最低[（173±190）个/L]；生物量夏季最高[（2.74±2.82）μg C/L]，秋季最低[（0.23±0.21）μg C/L]。砂壳纤毛虫壳的平均口径夏季最大[（49.64±6.90）μm]，秋季最小（26.76±4.55 μm）。砂壳纤毛虫群落Shannon多样性指数夏季最高（2.025±0.574），春季最低（0.922±0.437）；Pielou均匀度指数秋季最高（0.682±0.276），春季最低（0.448±0.266）。春季鱼礁区和对照区砂壳纤毛虫优势种存在差异，夏季和秋季鱼礁区和对照区砂壳纤毛虫优势种相同；3个季节鱼礁区第Ⅰ优势种的优势度均明显高于对照区。3个季节鱼礁区砂壳纤毛虫丰度和生物量均高于对照区，这可能是由于投礁后砂壳纤毛虫的适口饵料——nano-浮游植物丰度增加导致；3个季节鱼礁区Shannon多样性指数和Pielou均匀度指数均低于对照区，可能是因为本次调查是在投礁1~2 a后开展的，时间较短，鱼礁区砂壳纤毛虫群落尚不稳定，鱼礁区独特生态系统的变化尚需更长的时间来进行跟踪监测。 |
| 关键词: 砂壳纤毛虫 群落结构 季节变化 人工鱼礁 大神堂海域 |
| DOI：10.11759/hykx20210310002 |
| 分类号:Q958.8 |
| 基金项目:国家自然科学基金项目（41806205）；天津市农业发展服务中心青年科技创新项目（ZXKJ201915）；泰山学院引进人才科研启动基金项目（Y-01-2021014） |
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| Seasonal variation of tintinnid community in the artificial fish reef area of Dashentang waters in Tianjin |
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YU Ying1, XU Xiao-fu2, WANG Shuo2, ZHANG Bo-lun2, ZHANG Wu-chang3,4,5
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1.Taishan University, Taian 271000, China;2.Tianjin Fisheries Research Institute, Tianjin 300457, China;3.CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;4.Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;5.Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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| Abstract: |
| We investigated the abundance and biomass of the tintinnid community in the artificial fish reef area of Dashentang waters in Tianjin during summer (July 2015), autumn (October 2015), and spring (May 2016). Thirty-one species belonging to 10 genera were identified, 15 of which were from the genus Tintinnopsis. Species number was highest in summer. Significant differences in abundance, biomass, and community diversity index were found among the three seasons. Maximum tintinnid abundance was recorded in summer[(379±355) ind/L] and minimum tintinnid abundance in autumn[(173±190) ind/L]; tintinnid biomass was highest in summer[(2.74±2.82) μg C/L] and lowest in autumn[(0.23±0.21) μg C/L]. Similarly, Lorica oral diameter of the tintinnid community was highest in summer[(49.64±6.90) μm] and lowest in autumn[(26.76±4.55) μm]. The maximum Shannon index of the tintinnid community was recorded in summer (2.025±0.574) and the minimum Shannon index in spring (0.922±0.437). On the other hand, the maximum Pielou index of the tintinnid community was recorded in autumn (0.682±0.276) the minimum Pielou index in spring (0.448±0.266). Dominant tintinnid species found in the artificial fish reef area and the adjacent area were different in spring but the same in summer and autumn. The dominance index of the first dominant tintinnids was significantly higher in the artificial fish reef area than in the adjacent area in three seasons. The abundance and biomass of tintinnids were apparently higher in the artificial fish reef area than in the adjacent area in three seasons, which was possibly because of the increase of nano-phytoplankton abundance after artificial fish reef construction. Both Shannon index and Pielou index of the tintinnid community in the artificial fish reef area were lower than those in the adjacent area in three seasons, possibly because of the instability of the tintinnid community 1-2 years after artificial fish reef construction. Long-term monitoring of the tintinnid community in the artificial fish reef area is needed in order to understand the impact of artificial fish reef construction on the planktonic ecosystem. |
| Key words: tintinnid community structure seasonal variation artificial fish reef area Dashentang waters |