Biology |
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2002, Special Issue
L.M. Kavelenova, S.A. Rozno
The investigation based on the analysis of 1991-2001 weather conditions in Samara showes the variability from year to year of main forest-steppe climate features significant for plants. The influence of such variability on plant introduction and biomonitoring is discussed.
A.E. Mitroshenkova, T.M. Lysenko
ON SYNTAXONOMIC CHARACTERISTICS OF KARST CRATERS IN HIGH SAMARA ZAVOLJIE FORESTS
In the paper the vegetable cover of the karst craters in High Samara Zavoljie forests is analyzed. The problems of natural environment factors changing and creation of the particular microclimate which affects forming the vegetable cover of slopes and bottoms of karst craters are discussed. The list of associations, their characteristics and nomenclature types are quoted.
N.V. Prokhorova
ON HEAVY METALS CONCENTRATION IN SOILS OF SAMARA REGION ADMINISTRATIVE DISTRICTS
The features of heavy metals lateral distribution in soil cover are discussed by using Samara region example. The pollution level for administrative districts in connection with their technogenic loading heaviness is estimated.
G.L. Rytov
ON THE GENETIC TASKS WITH DIFFERENT COMPLEXITY LEVEL IN CONNECTION WITH PEDAGOGICAL AIMS
Criteria for different complexity level are discussed for genetic tasks that can be proposed for different pedagogical aims. Ways for creating a new generation genetic textbook of problems are described.
A.V. Sinitsky, E.V. Zakharov, Y.L. Gerasimov
ZOOPLANCTON AND ZOOBENTHOS OF VORONEZHSKIE PONDS
Zooplancton and zoobenthos of Voronezhskie ponds (Samara city) are investigated. The list of met zooplanctonic species is quoted. It is found out that rotifera prevaile in species diversity. Predatory zooplancton prevailes over filtering species by biomass, but yield in the number. Zoobenthos is mainly represented by mollusca, oligochaeta and chironomid larvae. Average ratios of biomass and number are quoted. Obtained results imply the conclusion of ponds eutrophication.