title: [Use of determination analysis for trophic connections in the water objects of Azov, Caspian and Kara gydrographic regions].
abstract: By determination analysis the study of contingencies between various components of freshwater biocoenoses in Don, Volga, Angara and Priazovye rivers is carried out. The positive contingency of phytoplankton and its divisions biomasses, and zooplankton biomasses is shown. The contingencies between zooplankton and Green, Pyrrophyta algae and cyanobacteria is the most valuable. In comparison with zooplankton, zoobenthos biomass has less quantity of positive contingencies with microalgae biomass, and also with zooplankton biomass, so basis of bottom organisms diet is detrit, water plants and small animals. By means of context procedure in determination analysis differencies in contingencies character between various geographical sites and the periods of time are revealed within the limits of one hydrographic area.
authors.forename: V N
authors.initials: VN
authors.lastname: Maksimov
authors.forename: N G
authors.initials: NG
authors.lastname: Bulgakov
mesh_terms: D000818:Animals; D018533:Biomass; D020387:Food Chain; D009792:Oceans and Seas; D010839:Phytoplankton / Q000502:physiology*; D045483:Rivers / Q000382:microbiology; D012426:Russia; D015048:Zooplankton / Q000502:physiology*