厦门岛东海岸沙滩底栖甲藻的春季特征

2000年春季，对厦门岛东海岸黄厝沙滩底栖甲藻的种类组成和时空分布进行了调查，发现了初春甲藻数量少，而春末夏初数量显著增多，由春初的0－20个／1000g湿砂增加到春末夏初的几千个／10g湿砂，相差3个数量级以上；Amphidinium britanicum和Adenoides eludens为春季优势种；Gyrodinium viridescense和Peridinium quinquecorne在5月份数量明显增多，与温度升高以及工栖藻类各类群总量增加有密切关系；底栖甲藻的总细胞密度和主要优势种的细胞密度呈由高潮向中、低潮带增加的趋势，还探讨了超声波处理在野外底栖甲藻定量研究中的重要意义。

Spring Characteristics of Benthic Dinoflagellates in the East Coastal Beach of Xiamen Island

In this study, the species compositions and the temporal and spatial distribution of sand dwelling dinoflagellates in the intertidal zone of Huangcuo Beach, Xiamen Island, were investigated from March to May. It was revealed that the total cell density increased from early March to May, with a variation of 3 order of magnitudes in cell richness; Amphidinium britannicum and Adenoides eludens were two dominant species in the spring, however Gyrodinium viridescence and Peridinium quinquecorne might be abundant in the early summer; the cell density of dominant species inclined from the high tide zone to middle and low tide zone. Finally, the importance of sonification treatment in precise cell enumeration of nature samples was discussed. This is the first report of specialized benthic dinoflagellate study in China.