| 摘要: |
| 依据 20 世纪 80 年代以来胶州湾浮游植物的调查资料, 系统分析网采浮游植物群落的长期变化特征。结果表明, 自 1981 年以来, 胶州湾浮游植物总量呈现增加的趋势, 但空间分布格局没有发生明显改变。胶州湾的浮游植物优势种组成发生改变, 洛氏角毛藻、密联角毛藻、波状石鼓藻、叉角藻与梭角藻等成为近 5 年来新的优势种。胶州湾浮游植物优势类群数量的长期变化趋势表明, 中肋骨条藻、 角毛藻等小型链状硅藻数量呈现增加趋势, 波状石鼓藻等暖水性种类的数量持续升高, 甲藻类浮游植物数量升高、分布范围扩大, 表明胶州湾浮游植物群落对气候变化和人类活动的综合影响已经做出响应。 |
| 关键词: 胶州湾, 浮游植物, 群落结构, 优势种, 长期变化 |
| DOI：10.11693/hyhz201105003003 |
| 分类号: |
| 基金项目:中国科学院知识创新工程重要方向项目群项目, KZCX2-YW-Q07-01 号; 国家重点基础研究发展计划(973)项目, 2011CB403603 号; 国家自然科学基金项目, 40876083 号; 中国科学院战略性先导科技专项, XDA05030401 号。 |
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| LONG-TERM CHANGES OF PHYTOPLANKTON COMMUNITY STRUCTURE IN THE JIAOZHOU BAY |
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SUN Xiao-Xia1, SUN Song1,2, WU Yu-Lin2, ZHANG Yong-Shan2, ZHENG Shan2,3
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1.Jiaozhou Bay Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences;2.Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences;3.Graduate University of Chinese Academy of Sciences
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| Abstract: |
| Based on survey data collected using plankton net from the 1980’s in the Jiaozhou bay, long-term changes of the phytoplankton community were analyzed in this study. The results indicated that total abundance of phytoplankton started increasing since 1981, and the increase was evident since 2000, especially in winter. However, there were no distinct changes in the spatial distribution patterns. The dominant phytoplankton species also changed in recent years. Some phytoplankton species, including Guinardia striata, Rhizosolenia alata f. Indica, and Hemiaulus sinensis, which were once dominant before the 1990’s, lost their dominance after 2000. The new dominant species, including Chaetoceros lorenzianus, Chaetoceros densus, Lithodesmium undulatus, Ceratium furca, and Ceratium fusus, appeared in the past five years. The long-term changes of the dominant species revealed that the small chained diatoms such as Skeletonema costatum and Chaetoceros sp., the warm water species such as Lithodesmium undulatus, and the dinoflagellates such as Ceratium furca and Ceratium fusus, increased dramatically in the past 30 years, indicating that the phytoplankton community had changed in response to the impacts of climate change and human activities in the Jiaozhou Bay. |
| Key words: Jiaozhou Bay, Phytoplankton, Community structure, Long-term changes |
