Multiple Methods For Phytoplankton Assessment

摘要

The simplest tool for assessing phytoplankton abundance in aquaculture ponds is the Secchi disk. An electronic turbidimeter can be used to measure the amount of light scattered by a water sample. The oxygen, light-dark bottle technique measures photosynthetic oxygen production and respiration within the water column. Phytoplankton can be assessed by measuring chlorophyll a concentration, a fairly easy and effective method. The number of phytoplankton can also be counted microscopically. Phytoplanktonform the base of the food web in fertilized aquaculture ponds. In ponds with feeding, some species need natural food during the first few weeks of culture, but later, phytoplankton usually contribute relatively little to the nutrition of the culture animals.