北极王湾海域浮游植物对光照和盐度变化的适应性研究

doi:10.13679/j.jdyj.2014.2.230

极地研究 ›› 2014, Vol. 26 ›› Issue (2): 230-237.DOI: 10.13679/j.jdyj.2014.2.230

北极王湾海域浮游植物对光照和盐度变化的适应性研究

崔世开^{1,2 何剑锋^2,3何培民¹ 张芳² 林凌² 马玉欣³}

¹上海海洋大学水产与生命学院, 上海 201306；

²国家海洋局极地科学重点实验室, 中国极地研究中心，上海 200136；
³同济大学环境科学与工程学院, 上海 200092

收稿日期:2013-04-07 修回日期:2013-07-13 出版日期:2014-06-30 发布日期:2014-06-30
通讯作者: 崔世开

ADAPTATION OF PHYTOPLANKTON COMMUNITIES TO LIGHT AND SALINITY VARIATION IN KONGSFJORDEN (SPITSBERGEN), ARCTIC

CUI Shikai^1,2, HE Jianfeng^2,3, HE Peimin¹, ZHANG Fang², LIN Ling² , MA Yuxin³

¹College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;

²SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;
³College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China

Received:2013-04-07 Revised:2013-07-13 Online:2014-06-30 Published:2014-06-30
Contact: CUI SHIKAI

摘要/Abstract

摘要： 2006年夏末，对北极黄河站附近的王湾（Kongsfjorden）海域基础环境特征进行调查，并采用模拟实验研究了该海域浮游植物对光照和盐度变化的适应性。结果显示：浮游植物群落在无光照条件下培养一天或者一周后，叶绿素a浓度基本保持稳定或略有下降；随后将其置于自然光下培养，叶绿素a浓度呈现开始明显下降、而后稳步上升的趋势。在盐度实验中，稀释倍率为10%时，浮游植物群落生长速率达到最大值，但将稀释倍率增大到一定程度（≥40%）时，低盐会限制浮游植物生长。研究显示，夏末王湾海域浮游植物群落对低光照环境具有一定的适应性；另外，由于低稀释率能促进浮游植物的生长，外湾由于受到融水影响的程度较小，因而有益于浮游植物的生长。

关键词: 浮游植物, 光照, 盐度, 王湾, 北极

Abstract: The basic environmental variables and adaptability of phytoplankton communities to low light and salinity were studied using incubation experiments in Kongsfjorden, a high Arctic fjord of Spitsbergen, in late summer 2006. Chlorophyll a concentrations were steady or decreased slightly in darkness after one day or one week incubation. Chlorophyll a concentrations showed an initial decline when exposed to natural light after one week incubation in darkness, and then increased significantly. In a salinity experiment, the maximal growth rate was observed at a dilution ratio of 10%, however, higher dilution ratios (≥40%) had an obvious negative effect on phytoplankton growth. We suggest that the phytoplankton communities in fjords in late summer are darkness adapted, and the inflow of glacial melt water is favorable for phytoplankton growth in the outer fjords where the influence of freshwater is limited.

Key words: phytoplankton, light, salinity, Kongsfjorden, Arctic

崔世开何剑锋何培民张芳林凌马玉欣. 北极王湾海域浮游植物对光照和盐度变化的适应性研究[J]. 极地研究, 2014, 26(2): 230-237.

CUI Shikai, HE Jianfeng, HE Peimin, ZHANG Fang, LIN Ling, MA Yuxin. ADAPTATION OF PHYTOPLANKTON COMMUNITIES TO LIGHT AND SALINITY VARIATION IN KONGSFJORDEN (SPITSBERGEN), ARCTIC[J]. ADVANCES IN POLAR SCIENCE, 2014, 26(2): 230-237.

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北极王湾海域浮游植物对光照和盐度变化的适应性研究

ADAPTATION OF PHYTOPLANKTON COMMUNITIES TO LIGHT AND SALINITY VARIATION IN KONGSFJORDEN (SPITSBERGEN), ARCTIC

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