台湾海峡微微型浮游植物的生态研究 Ⅱ. 类群组成、生长速率及其影响因子

黄邦钦; 洪华生; 林学举; 欧林坚

台湾海峡微微型浮游植物的生态研究 Ⅱ. 类群组成、生长速率及其影响因子

厦门大学, 海洋环境科学教育部重点实验室, 环境科学研究中心, 福建, 厦门, 361005

基金项目: 国家自然科学基金资助项目(49636220,49776308,40076031);教育部骨干教师基金资助项目.

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- 文章访问数: 834
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出版历程
- 收稿日期: 2001-08-10
- 修回日期: 2001-12-24

Ecological study on picophytoplankton in the Taiwan Strait Ⅱ. Group composition,growth rate and its affecting factors

Marine Environmental Science Laboratory Ministry of Education/Environmental Science Research Center, Xiamen University, Xiamen 361005, China

摘要

摘要: 1997年8月、1998年2～3月和1998年8月,应用荧光显微镜、¹⁴C法分别测定了台湾海峡微微型浮游植物的类群组成和生长速率,探讨了该海域原绿球藻的存在及丰度问题.结果表明,在类群的丰度组成上,该海域以含藻红素的蓝细菌(PE细胞)占优势,平均为83%～93%(航次平均范围,下同),微微型真核浮游植物(EU细胞)次之,平均为7%～11%,含藻蓝素的蓝细菌(PC细胞)最少,平均为0%～6%;在碳生物量的组成上,PE细胞仍占优势,但其贡献率降低(52%～74%),EU细胞所占比例则升高(26%～44%).台湾海峡微微型浮游植物生长速率的变异性较大(0.52～2.25d^-1),这可能与其所在测站的环境异质性(如营养盐的差异等)有关.采用叶绿素估算法证实该海域存在原绿球藻,其丰度介于10⁷～10⁸个/dm³之间,若将此考虑在内,在类群的丰度和生物量组成上,原绿球藻占优势(1998年8月碳生物量贡献率除外,为22%),丰度贡献率为63%～99%,碳生物量贡献率为60%～94%.
- 微微型浮游植物 /
- 生长速率 /
- 类群组成 /
- 台湾海峡 /
- 环境影响
Abstract: The studies on the composition, growth rate and environmental controlling were car ried out during three cruises in the Taiwan Strait (August 1997, February-March 1998 and August 1998) using epifluorescence microscopy and ¹⁴C-radio tracer.The results show that phycoerythrin-rich cyanobacteria (PE) dominate in abundance (contributed 83%~93%), picoeukaryotes (EU) are second and phycocyanin-rich cyanobacteria (PC) are the least abundant.With carbon biomass, PE still predominates although the contribution goes down (52%~74%), EU's contribution increases up to 26%~44%.Growth rate of picophy toplankton varies from 0.52 to 2.25 d^-1, which may be due to different environmental parameters (e.g., nutrients) in the study area.Prochlorococcus may occur in the Taiwan Strait by using chl.a evaluation, its abundance ranges between 10⁷ and 10⁸ cell/dm³, Prochlorococcus dominate the picophytoplankton both in abundance and biomass if included in picophytoplankton in the Taiwan Strait in August 1997, and February-March 1998, however, cyanobacteria dominate in carbon biomass in August 1998.
- picophytoplankton /
- composition /
- growth rate /
- Taiwan Strait /
- controlling factors

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参考文献(34)

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