| 一小型藻华池塘浮游植物群落动态及其影响因子研究 |
| 摘要点击 2987 全文点击 1401 投稿时间：2014-09-15 修订日期：2014-11-17 |
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| 中文关键词 藻华水体 浮游植物 群落演替 PRIMER 多元统计分析 |
| 英文关键词 eutrophic water phytoplankton community succession PRIMER multivariate statistical analysis |
| 作者 | 单位 | E-mail | | 杨文 | 宁波大学海洋学院, 教育部应用海洋生物技术重点实验室, 宁波 315211 | waithiei@126.com | | 朱津永 | 宁波大学海洋学院, 教育部应用海洋生物技术重点实验室, 宁波 315211 | | | 张克鑫 | 宁波大学海洋学院, 教育部应用海洋生物技术重点实验室, 宁波 315211 | | | 万莉 | 宁波大学海洋学院, 教育部应用海洋生物技术重点实验室, 宁波 315211 | | | 陆开宏 | 宁波大学海洋学院, 教育部应用海洋生物技术重点实验室, 宁波 315211 | lukaihong@nbu.edu.cn |
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| 中文摘要 |
| 对小型藻华水体进行密集采样调查有利于揭示藻华过程中浮游植物演替规律及其影响因子. 于3~10月对一小型藻华池塘进行为期30周的逐周跟踪调查,监测其水体理化指标和浮游生物种类和数量的变化,并应用PRIMER软件多元统计分析方法探求采样池塘浮游植物群落结构的动态变化及其与水体理化因子、浮游动物之间的关系. 调查期间共发现浮游植物54种(属),细胞丰度在0.28×108~6.11×108 cells ·L-1之间; 浮游动物55种(属),个体数量在26~2.5×105 ind ·L-1之间. 浮游植物优势类群主要为蓝藻和绿藻,且随季节的变化浮游植物群落结构呈现出明显的演替过程,该过程可分为绿藻和隐藻共存期、绿藻和蓝藻共存期、蓝藻优势期这3个阶段. 生物-环境相关性分析发现pH、水温、光照、总磷及轮虫、桡足类的数量是影响该池塘浮游植物群落结构动态变化的主要因素,且相比于浮游动物,水体理化因子的影响力或更强. |
| 英文摘要 |
| The high-density sampling of eutrophic water can help to reveal the general rules of phytoplankton community succession and the relationship with environmental factors. The species and abundance of plankton and the physical-chemical factors were tracked for 30 weeks from March to October in a eutrophicated small pond. The relationships between the phytoplankton community dynamic change and the physical-chemical factors as well as the zooplankton in the water body community were studied by the multivariate statistical analysis with PRIMER. A total of 54 phytoplankton and 55 zooplankton species were identified, and the abundances of plankton varied from 0.28×108-6.11×108 cells ·L-1 for phytoplankton and 26-2.5×105 ind ·L-1 for zooplankton. The dominant species of phytoplankton were Cyanophyta and Chlorophyta, and an obvious succession process was showed with the seasonal change, which could be roughly divided into three stages: Chlorophyta-Cryptophyta type, Chlorophyta-Cyanophyta type and Cyanophyta type. BIO-ENV showed that pH, water temperature, transparency, total phosphorus and the abundances of Rotifera and Copepoda were the most critical influencing factors on the community dynamics of phytoplankton, and compared to zooplankton, the physical-chemical factors might have a greater influence. |
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