摘要
1997年8月、1998年2～3月和1998年8月,调查分析了台湾海峡微微型浮游植物的时空分布(平面、垂直、总日和季节)及其调控机制。结果表明,微微型浮游植物丰度的平面分布不均匀,各类群具有不同的密集区,并存在明显的地理差异,垂直分布存在6种模式,以标准单峰和弱单峰为主,分布类型的多样化是由于微微型浮游植物固有的垂直分布模式和研究海域复杂的地形及水动力(如跃层等)条件相互作用的结果,微微型浮游植物的丰度存在明显的随时间变化现象;在季节变化方面,各类群存在较为明显的差异,温度是影响台湾海峡微微型浮游植物平面分布的重要因子,而光辐照度、温盐跃层是影响垂直分布的重要因子,微微型浮游植物不同类群在时空分布上存在“位移”现象,此与不同类群对温度敏感性不同、对光的利用能力不同以及生存空间的互补性等因素有关。
The studies on the temporal, spatial, diel, seasonal variations and controlling mechanism were carried out during three cruises in the Taiwan Strait (August 1997, February-March 1998 and August 1998). The results show that horizontal distribution of picophytoplankton abundance was heterogeneous, specific dense areas were found for each group of picophytoplankton. There were six patterns of vertical profiles of picophytoplankton in the Taiwan Strait, of which, standard monopeak and weak monopeak dominated, the diversity of vertical profile may be due to complex topography and strong hydrodynamics (such as thermocline) in the study area. Regression analysis between picophytoplankton abundance and environmental factors shows that temperature was a key factor in horizontal distributions, while the irradiance, thermocline and halocline were important factors affecting the vertical profile in the Taiwan Strait. There were different 'niches' for the different picophytoplankton groups in the study areas, this may be due to the differences among the groups in the sensitivity to tolerate temperature and ability to use light.
出处
《海洋学报》
CAS
CSCD
北大核心
2003年第4期72-82,共11页
基金
国家自然科学基金(49636220
49776308
40076031)
教育部骨干教师基金资助
