Šlapkauskaitė, G., Jankavičiūtė, G.
Ecological role of group B vitamins in the succesion of phytoplankton. 1. investigations on the succesion of late summer phytoplankton and structure of vitamins under experimentally modulated different trophic conditionsAbstract
The research tests of late summer phytoplankton regarding
their seasonal succesion were conducted using experimental models with water of
different eutrophic conditions. This allowed to carry out an evaluation of the
following changes during the succesion: composition of algae, percentage
abundance of algae, biomass of phytoplankton, photosynthesis and respiration of
phytoplankton, amount of saprophytic bacteria, dynamic of group B vitamins both
in water and phytoplankton biomass. Changes of phytoplanktocenosis coincided
mainly with changes in the content of group B vitamins in water.
Due to a large amount of available research data, this paper
is divided into several parts to analyze the test results of the succesion of
late summer and spring phytoplankton, and the influence of different vitamins
on the succesion of phytoplankton.