ENUMERATION OF FRESHWATER PHYTOPLANKTON CONCENTRATED ON THE MEMBRANE FILTER
ENUMERATION OF FRESHWATER PHYTOPLANKTON CONCENTRATED ON THE MEMBRANE FILTER
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DOI：
10.4319/lo.1960.5.1.0057
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发表时间：
1960-01-01
影响因子：
4.5
通讯作者：
MCNABB, CD
中科院分区：
文献类型：
--
作者：
MCNABB, CD
当浮游植物个体集中在膜过滤器上时，浮游植物的个体变得随机分布。因此，一种物种出现的微观场的百分比可以有效地换算为每一场的理论平均个体数量。这样得到的理论密度和通过耗时计数确定的实际密度在25个或更多的场得分时非常接近。描述了使用该关系的枚举技术。与通常使用的浮游生物集中和估计样本中的个体数量的程序相比，它有许多优点。
Individuals of the phytoplankton become distributed at random when concentrated on the membrane filter. The percentage of microscopic fields in which a species occurs may therefore be validly converted to a theoretical average number of individuals per field. The theoretical density thus obtained and the actual density determined by time-consuming counting are very nearly similar values when 25 or more fields are scored. An enumeration technique using this relationship is described. It has many advantages over commonly used procedures for concentrating the plankton and estimating the number of individuals in a sample.