| 杨平,戴国飞,方媛瑗,钟家有.艾溪湖水华蓝藻多样性探讨[J].江西水利科技,2017,(3):162-166 |
| 艾溪湖水华蓝藻多样性探讨 |
| A Discussion on diversity of bloom-forming cyanobacteria in Aixi Lake |
| |
| DOI： |
| 中文关键词: 艾溪湖 水华蓝藻 多样性 分类学特征 |
| 英文关键词: Aixi Lake Bloom-forming cyanobacteria Diversity Taxonomic character |
| 基金项目: |
|
| 摘要点击次数: 640 |
| 全文下载次数: 602 |
| 中文摘要: |
| 本文首次阐明了艾溪湖水华蓝藻的种类、形态及分类学特征, 对艾溪湖水华蓝藻的组成和多样性指数进行了分析, 并对艾溪湖水华蓝藻种类在全国的分布特征和产毒能力进行了讨论. 艾溪湖水华暴发时蓝藻丰度占据绝对优势并导致藻类多样性急剧下降, 严重抑制其它藻类生长. 显微镜检后发现优势水华蓝藻7种, 分别是惠氏微囊藻、挪氏微囊藻、阿氏浮丝藻、螺旋浮丝藻、拉氏拟浮丝藻、依沙矛丝藻、紧密长孢藻. 艾溪湖优势水华蓝藻存在季节演替, 春季水华蓝藻优势种是微囊藻, 夏季是拉氏拟浮丝藻和螺旋浮丝藻. 部分种类能够产生微囊藻毒素、神经毒素等藻毒素, 对艾溪湖水生态安全具有重大威胁. |
| 英文摘要: |
| Morphological and taxonomic character of bloom-forming cyanobacteria in Aixi Lake were first reported in this study. The community characteristics and diversity of bloom-forming were analyzed. The distribution of these cyanobacteria in China and toxin producing ability were discussed. Several cyanobacteria-blooms were found in different area of Aixi Lake in 2016, cyanobacteria became the absolutely dominant species, while the diversity of phytoplankton decreased. This phenomenon gave rise to the inhibition in the reproduction of other phytoplankton. Samples were obtained and analyzed by microscope. 7 dominant bloom-forming cyanobacteria were identified in the samples, they were Microcystis wesenbergii, Microcystis novacekii, Planktothrix isothrix, Planktothrix spiroides, Planktothricoides raciborskii, Cuspidothrix issatschenkoi, Dolichospermum compacta. The diversity of bloom-forming cyanobacteria was high in the Aixi Lake. Remarkable seasonal succession of dominant bloom-forming cyanobacteria was found in Aixi Lake, Microcystis is the dominant bloom-forming species in spring; Planktothrix spiroides and Planktothricoides raciborskii were dominant species in summer. Several species of bloom-forming cyanobacteria in Aixi Lake can produce microcystins and neurotoxins etc., indicating that severe threat in water security of Aixi Lake will be caused by these species. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
