Ciliate abundance and biomass in water samples collected at Station SEPT-1997-GN36199704605MSB02 in the Aegean Sea@en

Borax-buffered formalin (final concentration 2% formaldehyde). Samples for ciliate counting were stored at 4°C in the dark until observation. For ciliate identification and enumeration, 100 ml samples were left for 24 h in sedimentation cylinders and then observed under an inverted epifluorescence microscope. Ciliate cell sizes were measured and converted into cell volumes using appropriate geometric formulae of Peuto-Moreau (Peuto-Moreau M., 1991. Symbiose plastidiale et mixotrophie des cilies planctoniques marins Oligotrichina (Ciliophora). These de Doctorat d' etat, Universite de Nice-Sophia Antipolis). For biomass estimation the conversion factor 140 fgC µm^-3 was used (Putt M., Stoecker D.K., 1989. An experimentally determined carbon: volume ratio for marine oligotrichous ciliates from estuarine and coastal waters. Limnology and Oceanography 34, 1097-1103).采用硼砂缓冲福尔马林（最终甲醛浓度为2%）固定样品。用于纤毛虫计数的样品于4℃避光储存，直至开展观测。用于纤毛虫鉴定与定量计数的100mL样品置于沉降筒中静置24小时，随后在倒置落射荧光显微镜下进行观测。纤毛虫细胞尺寸经测量后，采用Peuto-Moreau提出的适配几何公式换算为细胞体积（Peuto-Moreau M., 1991. 海洋浮游贫毛亚纲纤毛虫（纤毛门）的质体共生与混合营养特性. 国家博士论文，尼斯-索菲亚安提波利斯大学）。生物量估算采用140 fgC·μm⁻³的换算系数（Putt M.、Stoecker D.K., 1989. 河口与近岸海域海洋寡毛类纤毛虫的碳体积比实验测定. 《湖沼学与海洋学》，34卷，1097-1103页）。