|
Effect of organomineral suspension on development of plankton community which are included in microbial food web
has been studied in the laboratory and in the field. In the course of the model experiment it was found that in samples
with adding suspension the chlorophyll concentration (Cchl) increase runs more intensively and the longer time period.
Increase Cchl in the control ran up to 67 days with the following going out to the stationary level at maximum value
220 mkg/l. In samples with adding 100 mg/l suspension the stationary level was not reached to the 80 days of the
experiment and the maximum chlorophyll concentration made 520 mkg/l. In field studies it was ascertained that all the
parameters related to production characteristics of bacterioplankton as well as to organic matter adsorbed on mineral
suspension greatly influence the production characteristics of phytoplankton. The multiplicative model of dependence of
a primary production from primary factors of environment: the content of chlorophyll, specific absorption coefficient of
light by the dissolved organic matter, content of adsorbed organic matter, bacterial production and destruction, mean size
of phytoplankton cells is offered. It would follow from this model that if bacterioplankton production increases twice (at
remaining other parameters constant) then primary production will be 2.5 times larger in the Khanka Lake, 1.9 times in
the Yenisei River and 1.4 times in Krasnoyarsk water storage.
|
