Alexey Prokhorov

Petrozavodsk State University · Botanic Garden

Comparison of circadian rhythms of plant leaf temperature and dew point makes it possible to identify time intervals of dew falls. Using the dragon tree (Dracaena draco L.) as an example, it was shown that under arid conditions a CAM plant is able to condense and absorb up to ½ liter of water from 1 m2 of leaf surface cooled below the dew point dur...

2022 May 19 During the expedition, Tofig Sadig oglu Mammadov, Director General of the Institute of Dendrology of the National Academy of Sciences of Azerbaijan, Corresponding Member of the National Academy of Sciences of Azerbaijan, died tragically.

The history of the study of the species composition of birds in the vicinity of the city of Petrozavodsk is described. The first results of studies of hollow-nesting birds using the method of observation of artificial nesting sites in the territory of the Botanic Garden of PetrSU are presented. A list of species has been compiled indicating the nat...

On the landscape planning of Versailles as a fortification.

The purpose of the work was to experimentally determine the amount of moisture that can condense on the surface of the plant when cooled below the dew point. To estimate the amount of condensed water on a surface cooled below the dew point, a unit with a thermoelectric module with an area of 9 cm2 was assembled. It was established that the water co...

The amount of moisture that can condense on the surface of the plant when cooled below the dew point is experimentally determined. It was found that the water condensation coefficient KC varies in the range from 1.3 to 2.1 mg / (cm2 x hour x deg) depending on the value of relative humidity and air temperature, which corresponds to 156 ... 252 grams...

Since 2010, descriptions of 20 new forms and hybrids of woody plants have been published in the Hortus Botanicus journal, 7 have already been included in the International Plant Names Index. The origin of 19 samples was established: 6 of them are of natural origin; 3 were received from botanical gardens; 9 - from self-seeding or seeds collected in...

On the need to preserve the scientific, educational and intellectual potential of the Botanical Garden in a consumer society using information technology.

Changes in the temperature of the surface of the plant were studied to determine the significance of water condensation on the surface of plants and the relationship between this phenomenon and climatic environmental factors. For 30 hours at night, conditions favored the precipitation of fog, and due to a decrease in the temperature of the surface...

The article covers water condensation on the surface of plants. It is suggested, that there are mechanisms capable of ensuring plant survival when lacking natural precipitation in the form of rain or fog. The self-irrigation ability allows botanical gardens to create plant expositions of plants that do not need watering in local conditions, forming...

It is hard to lose a teacher, who used to direct you. It is sad and bitter to lose a colleague, who you used to work with for many years. It is unbearably painful to lose a friend, with whom you have gone through so much together. Doctor of biology, Professor, director and creator of the Kuban Subtropical Botanical Garden, chairman of Dendrology...

The essay briefly touches upon the main mechanisms to cool down the plats’ surfaces that lead to condensation of atmospheric moisture; methods for experimental verification of these mechanisms are presented therein.

The value of the observed phenomenon of condensation of atmospheric moisture by cooling the plant leaves and shoots to a temperature below the dew point is largely determined by climatic parameters. Comparison of the deviation of the average monthly temperature of the dew point in the different regions of the world allows us to assert the universal...

Studies conducted at the Subtropical Botanical Garden of Kuban (Utch-Dere, Sochi) pretty much allow to explain the abnormally high drought resistance of Liriope graminifolia Lour. and Ophiopogon japonicus Ker.-Gawl., plants that naturally grow mostly in sufficient humidity. Quite low temperatures of the leaves’ surface allow to effectively condense...

The article is devoted to the study of water condensation on the surface of plants. The observations support the hypothesis of an active condensation of atmospheric moisture on the surface by cooling plant leaves and shoots to a temperature below the dew point. The phenomenon is usually observed in the absence of direct sunlight. The accumulation o...

Brief information about the content and nature of the ninth volume of the journal 'Hortus botanicus'.

Essay on the anniversary of my friend Yuri N. Kaprun - Doctor of Biological Sciences, Professor, Director of Subtropical Botanical Garden of Kuban and chairman of the Regional Council of botanical gardens in Southern Russia.

The paper suggests the relationship ethnogenesis of Homo sapiens and the formation of its landscape preferences, interfacing with genetic changes.

Scientific and educational electronic resource "Geographic information system Botanical Garden PSU" is designed to provide social activities of the Botanical Garden, support educational and industrial practice and research students, as well as fundamental and applied research. The structure consists from base and thematic information layers. Base l...

This paper is devoted to some peculiarities of water condensation on the surface of plants . Arguments in support of the hypothesis that in decreasing temperature of leaves and shoots below the dew point, the plant can actively condense moisture from the air, increasing the duration of dewfall are presented. Evening dewfall on plant surfaces begins...

In this paper we describe the structure of information space of Botanic Gardens. Considered information resources for scientific, educational and social problems botanical gardens and their associations.

This article discusses the results of the botanical gardens activity in the introduction and acclimatization of plants appearing: in the distribution of species beyond their natural ecological optimum, in the creation of collections of closely related species capable to spontaneous hybridization, in the formation of sources of invasive species. The...

К настоящему времени, благодаря уже завершенным проектам, мы располагаем определенным приоритетом по широте охвата анализируемых коллекций, по стандартизации форматов данных для обмена информацией. Высокая степень кооперации ботанических садов и координирующая роль Совета ботанических садов России и Беларуси (СБСРБ) позволяют рассчитывать на успешн...

This study aimed to evaluate the use of the information system «Botanical collections of Russia» for a comparative analysis of collections in botanical gardens. e analysis includes an estimation of the taxonomic diversity of these collections in comparison to a global diversity of coniferous plants, and an estimation of the inuence of key climatic...

Высокие темпы развития научно-технического прогресса, сопряженные со стремительными изменениями в социальном устройстве российского общества, приводят к тому, что в ми- роощущении человека начинает преобладать прагматическое отношение к действительности. Однако такой подход не приближает нас к истинной гармонии в обществе и к гармонич- ным отношени...

Recently, the accents in the field of application of information technologies for needs of biological collections are displaced from registration and account in area of the analysis of the data. If to determine a biodiversity, as the genetic resources, distributed in space, it is easy to make a conclusion, that one of the most powerful tools of the...

«Calypso» is a program intended for the creation of the databases of botanical collections kept in botanical gardens and herbaria. At the present moment «Calypso» (versions from 4.0 to 4.53) is used at about 30 botanical gardens of Russia and the Ukraine, besides our garden. The program uses the international transfer format (ITF) for the botanical...

The project dealing with the formation of the Information-Searching System that unites collection funds of Russia and the contiguous countries aims on the first place the creation of an available source of information on the collections of botanical gardens and dendrologic parks of Russia. The project ensures constant accumulation and generalizatio...

The article is dedicated to the 50th anniversary of the PetrSU Botanic Garden. The idea of its creation is ex- plained by its opportune location close to the northern boundaries of the nemoral species’ natural distribution, and also between the Polar-Alpine and St.-Petersburg botanical gardens, which is conducive to the creation of a link, an intro...

The project dealing with the formation of the Information-Searching System that unites collection funds of Russia and the contiguous countries aims on the first place the creation of an available source of information on the collections of botanical gardens and dendrologic parks of Russia. The project ensures constant accumulation and generalizatio...

The associative absorption band for liquid water ~a is lacking for the vapor and is localized in the 2650-1850 cm -I range (Fig. i), with its maximum dependent on the phase state and temperature; the strong band due to atmospheric CO 2 in that range does not distort Va for H20 outside the range 2400-2325 cm -l. It is found [4, 5] that ~a has the fo...

From a number of new experimental findings the author demonstrates the relationship between the surface of globular proteins accessible to the solvent and their structural organization.

Информационно-аналитический центр Совета ботанических садов России при Ботаническом саде ПетрГУ осуществляет информационно-технологическую поддержку работ по сохранению биологического разнообразия растений в ботанических садах (БС) России. Данная работа необходима в целях совершенствования работы по мобилизации, сохранению и использованию генетичес...