Lake Peipsi 1991 (Phytoplankton samples)

Methods: Samples were in most cases concentrated by precipitation up to 15 ml. Count was made on striped microscope slides within volume 0,1 ml. Microscopes: MBI-3 (magnification 15x20 and 15x40) and Jenaval (7x40). Macroscopic colonies of Gloeotrichia echinulata were counted visually in 500 ml measuring cylinder.

方法：多数样品通过沉淀法浓缩至15毫升。于0.1毫升容积的带标线载玻片上完成计数。所用显微镜为MBI-3（放大倍数15×20、15×40）与Jenaval（7×40）。在500毫升量筒中，对肉眼可见的棘球胶鞘藻（Gloeotrichia echinulata）宏观菌落进行目视计数。