The article contains information on the boreal and taiga flora element of Partsa basin.
Analysis the taxonomic composition taiga species, the ratio of life forms, ecological and
phytocoenotic groups is conducted. Species listed the federal and the regional Red Data
Books are pointed out.
The current article provides the data of laboratory studies of seed germination characteristics of Salvia glutinosa L. Seeds were taken from the Botanical Garden collection of medicinal plants. Freshly harvested seeds (up to 1.5 years of storage) do not require special measures for germination. For long-term storage seeds require exposure to low temperature or oxygenation. Seeds of Salvia glutinosa retain the ability to germinate for 3,5 years.
The possibility of usage of GIS-technologies in preparation for fieldwork and analysis of
results; the diagram of the grid division of the territory of Mordovia is brought for the
first time; the possibility to create databases on the basis of GIS-technologies for rare
plants is described.
The article studies vegetation of three saline plots in Malaya Serdoba district and Serdobsk district of Penza region. At these plots halophytic meadows (49 %) and halophytic steppes (35 %) dominate. The basic steps of halophytic vegetation formation are stated in relation to the natural and human factors. We are proposing to include two new of saline plots: «Chunaksky solonetz» and «Serdobsky solonetz» in the Special Protected Natural Areas list.
This article reports about distribution of Comarum palustre in the Saratov Region. This
species is common with floras of 10 administrative districts. It is confirmed that nowadays
Comarum palustre is distributed in left-bank districts of Saratov Region too.
This article presents data on the alien flora of the Lyambir' district. Characteristic features are clarified. Group of alien species which may be found here on during further researches is shown in article.
The article results the data of laboratory studies of seed germination characteristics of
Inula helenium L. Seeds were taken from the Botanical Garden collection of medicinal
plants. the Preservation terms of seed viability and accounting periods of germination
energy were established. The influence of cold stratification on seed germination was
considered.
The article presents a literature review of mosses study in Samara region. Work was
done on the compilation of herbarium bryophytes and identification of samples.
Current article contains August 2011 studies of phytoplankton in the Western substeppe
lakes of Astrakhan region. It has 223 algae taxa below the rank of genus. This is mainly
Chlorophyta, Cyanophyta and Bacillariophyta. Ecologically and geographically dominated
species of planktonic organisms-cosmopolitans, species indifferent in relation to salinity,
alkalifilic organisms and species indifferent in relation to the pH.
A comparison of different diversity indexes (Margalef index, Simpson index, Shannon
index) is conducted to analysis of phytoplankton of Alatyr river basin.
In the article it is explored amylolytic activity in the intestine juvenile fish species under
the influence of in vitro herbicide Roundup at different temperatures and pH.
In the research it was investigated the influence of Cu2 +, Zn2 +, Ni2 + ions and synthetic
growth regulators – citodeph, kinetin and thidiazuron on metal-tolerance in young plants
of Dahlia × culturum, Hordeum vulgare L and Triticum aestivum L
The description of a method allowing to define meaning of a temperature optimum
for the juvenile fish is given. The thermopreferendum method is based on creating of
experimental thermogradient conditions to fishes, in which they spontaneously choose a
zone of a ecological-physiological optimum. The data on 21 species of freshwater fishes –
meaning of final preferred temperatures for fingerlings and yearlings in a summer season
of year are analyzed. The received results are urgent and are claimed both in theoretical
and in the practical plan.
In summer and winter seasons of a year the value of final preferred temperature in the
juvenile carp, silver crucian, bream and Amur sleeper were defined. The most thermophilic
species – carp, silver crucian and Amur sleeper – in both seasons firmly selected one level
of final preferred temperature. On the contrary, it was revealed that bream fingerlings in
different seasons of year two much differing levels of final preferred temperature.
Modern biogeocenose covering large cities is a complex autogenetic and anthropogenic
plant communities. The nature of anthropogenesis, which increases from peripheral to
inner autogenetic anthropogenic phytocenotic complexes, is disclosed. A classification of
biogeocenoses environmental biota city is proposed.
Long-term data shows that the concentration of heavy metals in grain of spring and
winter wheat depends on the soil type, the concentration of metals in them, the level of
technogenic pollution; the correlation of these factors is considered in the article.
The effect of leaf disks treatment by herbicide Paraquat has been considered for wheat,
rye and maize. Lipid peroxidation in leaf disks of different crop plants was enhanced
in most variants. Malone dialdehyde level varied linearly or non-linearly as depended
of Paraquat concentration as well as duration of leaf disks incubation in xenobiotic
solutions.
This article examines the effect of sterilization solutions on infection of explants for
the two breeds. It have been revealed that the use of step sterilization (namely 50 %
Domestos (25 minutes) – 6 % chloramine (20 minutes) – 70 % alcohol (2 minutes))
provides the maximum yield of sterile material for both varieties. Period from April to
May is considered as the optimal date for planting.
The article examines changes in the activity of the antioxidante system, enzyme ascorbate
peroxidase of tomato leaves of different breeds at low positive temperatures and after the
effect. Activity of ascorbate peroxidase decreases with lowering of temperature.
We studied the impact of the Ribav-Extra on activity of catalase and ascorbate
peroxidase in the leaves of maize plants under the conditions of low-temperature stress.
It was revealed that activity of enzymes decreases under the impact of low temperature.
Growth regulator affects activity of enzymes during cooling if there is pre-treatment of
maize seed. Enzyme activity has depended on the Ribav-Extra concentration. Recovery
of enzyme activity have been observed after termination of cooling. 10–6 % and 10–7 %
Ribav-Extra concentrations are the most effective.
The article contains teriofauna species composition of biological station of the Mordovian
University and its precincts in Simkinskoe forest district basing on the analysis of the own
field studies and literary sources. It is reported about 46 species of mammals affecting
forests of Bolshebereznikovskoe Prisuriye.
The field studies on area Middle Prisurye after the seasonal flood of 2012 have shown
natural change in population of small rodents, including alteration of dominating species.
The species composition of Micromammalia is revealed. In consequence of their specific
particularities, Sylvaemus flavicollis has spreaded more on flooded territories, than
Clethrionomys glareolus.
This article presents data on new findings of 32 rare insects of Mordovia, which are
included in the regional Red Data Book and in the Red Data Book of Russian Federation.
Besides, it presents data on 15 species needing for continuous control in the nature.
Ecological analysis of Scarabaeoidea was carried out, trophic groups and stational
distribution features of the beetles were defined. Morpho-adaptational types of the
lammellicorn beetles of the Mordovian reserve were pointed out.
13 species of sawflies of the Diprionidae family are detected in Yakutia. 1 species was
recorded in Yakutia for the first time. Brief characteristics of zoogeographical and
ecological features, literature data, filed material are given for each species.
The article presents data on changes in the activity of key enzymes of the antioxidant
system (superoxide dismutase, catalase), responsible for ways of switching of free radical
reactions. Protective mechanisms on action of xenobiotics at the cellular and molecular
levels are shown.
This article provides information about findings of Gyromitra fastigiata (Krombh.)
Rehm) in the Republic of Mordovia. Description of the species performed on materials
of the authors was given.
The article provides information about the modern biological (natural) regulators of plant
growth and development, their stimulating effect on the vegetative objects is shown.
This article discusses the conformation changes of hemoporphirine in the development of
hypoxia that is associated with a different physical activity of rats.
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