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OALib Journal期刊
ISSN: 2333-9721
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水体扰动对多种赤潮藻生长的影响
Keywords: 扰动,藻,生长率,最大生物量
Abstract:
？水体扰动是海洋环境的一个重要特征。扰动通过对藻细胞周围的营养盐边界层厚度的影响,进而影响藻细胞的生长。在其他环境因子统一的条件下,通过室内实验研究扰动条件为主要影响因素对藻类生长的影响。研究结果发现扰动对中肋骨条藻、具齿原甲藻等10个藻种生长存在不同影响,实验数据显示,100r？min?1扰动对新月菱形藻nitzschiaclosterium,中肋骨条藻skeletonemacostatum、具齿原甲藻prorocentrumdentatum、针胞藻fibrocapsajaponica、棕囊藻phaeocystisspp.、定鞭金藻prymnesiumpatelliferium有显著作用(p<0.05),对赤潮异弯藻heterosigmaakashiwo、亚心形扁藻platymonassubcordiformis、青岛大扁藻platymonashelgolandicavartsingta-oensis、塔胞藻pyramimonassp.、pyramidomonas作用不明显(p>0.05)。扰动促进了棕囊藻和定鞭金藻的生长,使之达到最大生物量,并延长了藻细胞的生长时间;同时100r？min?1扰动抑制了新月菱形藻,中肋骨条藻、具齿原甲藻、针胞藻的生长。这些不同的藻类对水体扰动有不同生长反应,结果表明水体扰动是藻类种间竞争的的选择推动力之一。
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