THE SPECIFIC COMPOSITION OF WEED PLANTS ON RUDERAL HABITATS ON THE TERRITORY OF VYBORG CITY (LENINGRAD REGION)

2021 ◽  
Vol 21 (3) ◽  
pp. 79-86
Author(s):  
E.N. Mysnik ◽  
Keyword(s):  
Species Composition ◽  
Specific Structure ◽  
Monitoring Data ◽  
Leningrad Region ◽  
Specific Composition ◽  
Weed Plants ◽  
Floristic Analysis ◽  
The City

The purpose of the study was to identify the species composition of weed plants and its features on ruderal habitats on the territory of Vyborg city (Leningrad region, Vyborg district). Materials collected during the route survey of ruderal habitats on the territory of the settlement. Systemati-zation of monitoring data, floristic analysis of species composition, calculation of species occur-rence and assessment of its persistence were carried out. The specific structure is presented by 58 species, 48 genus, 18 families. Groups of 21 dominant and 15 concomitant in occurrence species are allocated. Brought species of weeds were revealed. The interrelation of species compositions of weed plants of segetal habitats of the region and ruderal habitats in the territory of the settlement is shown (17 species, identified on ruderal habitats of the city, are dominant in the fields of the region).

scholarly journals Features of the specific composition of weeds on the territory of Vsevolozhsk (Leningrad region)

2021 ◽  
Vol 20 (1) ◽  
pp. 313-316
Author(s):  
E. N. Mysnik
Keyword(s):  
Common Species ◽  
Ecological Approach ◽  
Leningrad Region ◽  
Habitat Types ◽  
Specific Composition ◽  
Different Types ◽  
Species Groups ◽  
The Relationship ◽  
The City ◽  
Artificial Origin

As a part of the ecological approach, weeds are considered as plants of secondary habitats of natural and artificial origin with disturbed natural vegetation cover. Such habitats are also available in the territory of settlements. Therefore,the study of the specific composition of weeds in the territory of settlements is an important area of scientific research. Thepurpose of this study is to identify the features of the specific composition of weeds depending on the type of habitat in thecity of Vsevolozhsk (Leningrad Region). Аs a result of the study, new data were obtained on the weeds distribution in different types of habitats within the city. For comparison, harvested clogged areas and lawns were selected, 59 and 66 species wereidentified on them, respectively. Species compositions of weeds of comparable habitat types have significant similarities in thetaxonomic structure and composition of species groups which dominate in occurrence (14 common species). The proportion of young (annual and biennial) and perennial species of weeds on the compared types of habitats varies slightly. Together,15 species from the compositions of the dominant species groups are dominant in the fields of the Leningrad Region, whichdemonstrates the relationship between the different components of the weed flora of the Leningrad Region. As a part of the ecological approach, weeds are considered as plants of secondary habitats of natural and artificial origin with disturbed natural vegetation cover. Such habitats are also available in the territory of settlements. Therefore,the study of the specific composition of weeds in the territory of settlements is an important area of scientific research. Thepurpose of this study is to identify the features of the specific composition of weeds depending on the type of habitat in thecity of Vsevolozhsk (Leningrad Region). Аs a result of the study, new data were obtained on the weeds distribution in different types of habitats within the city. For comparison, harvested clogged areas and lawns were selected, 59 and 66 species wereidentified on them, respectively. Species compositions of weeds of comparable habitat types have significant similarities in thetaxonomic structure and composition of species groups which dominate in occurrence (14 common species). The proportion of young (annual and biennial) and perennial species of weeds on the compared types of habitats varies slightly. Together,15 species from the compositions of the dominant species groups are dominant in the fields of the Leningrad Region, whichdemonstrates the relationship between the different components of the weed flora of the Leningrad Region.

scholarly journals Ecological and biological characteristics of the dendroflora of Cheboksary in the greening system of the city

2021 ◽  
Vol 10 (3) ◽  
pp. 105-111
Author(s):  
Konstantin Vitalyevich Samokhvalov ◽  
Evgeny Arkadievich Sinichkin ◽  
Aleksandr Petrovich Arsentiev
Keyword(s):  
Species Composition ◽  
Woody Plants ◽  
Woody Plant ◽  
Central Zone ◽  
Industrial Area ◽  
Comprehensive Analysis ◽  
Green Areas ◽  
Degree Of Participation ◽  
Economic Zones ◽  
The City

The paper presents the results of a comprehensive analysis of the species composition of Cheboksary. The analysis of the dendroflora of the urban environment was carried out according to 3 indicators: the territory of woody plants, the occurrence of woody plant species in landscaping, the structure of the landscaping system. The arboreal vegetation of Cheboksary is represented by 73 species belonging to 43 genera and 20 families. The predominant part of the dendroflora is represented by the covered-seeded plants (86,3%), the gymnosperms - 13,7%. In the dendroflora of green areas of the city, the most widely represented families are Rosaceae, Pinaceae, Salicaceae (48%). The analysis of the species composition of woody plants showed that in the functional and economic zones of Cheboksary plantings of general use are represented by 65 species, plantings of limited use - 52 species, plantings along the streets and main roads - 50 species. The analysis of the species composition of woody plants depending on the share of their participation in landscaping revealed that the greatest number of woody plants is used with low (51 species) and medium (50 species) share. The analysis of the degree of participation of woody plants in landscaping in the four identified functional and economic zones of Cheboksary found that the greatest number of taxa prevail with an average participation in the central zone (37 species), the coastal and suburban zones (36 species). The largest number of species of woody plants grow in the green areas of the central functional and economic zone, where the landscaping involved 66 species, the smallest number grow in the green areas of the industrial area (36 species).

scholarly journals Characteristics of the epidemic process and the leading risk factors for HIV infection in conditions of a large metropolis

2015 ◽  
Vol 20 (6) ◽  
pp. 15-18
Author(s):  
V. V Naumenko ◽  
T. V Sologub ◽  
V. V Tsvetkov ◽  
L. M Tsybalova
Keyword(s):  
Hiv Infection ◽  
Vulnerable Groups ◽  
Morbidity Rate ◽  
Leningrad Region ◽  
Cumulative Number ◽  
Hiv Epidemic ◽  
Central District ◽  
The Russian Federation ◽  
The City ◽  
Late Detection

The HIV epidemic has been going on for nearly thirty years, it is a heterogeneous, dynamic and highly resistant to countermeasures. The Leningrad Region and the city of St. Petersburg today are referred to the most affected regions of the Russian Federation, as nearly 1% of the population of this city has HIVpositive status. Despite the decline in the HIV infection incidence of the resident population of the Central District, the epidemiological situation for HIV infection remains to be tense, due to the increase in the cumulative number of HIV-infected and AIDS patients, the increase ofthe morbidity rate and mortality in co-infected patients with HIV/tuberculosis, activation of the output of the epidemic in vulnerable groups into the general population. At the same time, a cohort of HIV-infected patients with a high risk of late detection of tuberculosis continues to form

scholarly journals Species Composition and Abundance of Ixodid Ticks (Acari: Ixodidae) in the City of Petrozavodsk, Republic of Karelia, Russia

2015 ◽  
pp. 67
Author(s):  
Сергей Владимирович Бугмырин ◽  
Любовь Алексеевна Беспятова ◽  
Николай Юрьевич Котовский ◽  
Евгений Павлович Иешко ◽  
Sergey Bugmyrin ◽  
...  
Keyword(s):  
Species Composition ◽  
Ixodid Ticks ◽  
The City

The Ecology and Distribution of Intertidal Organisms on Certain Islands off the Queensland Coast

1956 ◽  
Vol 7 (3) ◽  
pp. 317 ◽  
Author(s):  
R Endean ◽  
W Stephenson ◽  
R Kenny
Keyword(s):  
Species Composition ◽  
Great Barrier Reef ◽  
Gradual Transition ◽  
Barrier Reef ◽  
Marine Fauna ◽  
The North ◽  
Specific Composition ◽  
Continental Islands ◽  
Longitudinal Division ◽  
Zonation Patterns

The species composition and general ecology of intertidal organisms present at Heron Island, a coral cay in the Capricorn Group, are recorded in this paper. It was found that the general zonation picture on this Great Barrier Reef island differed markedly from that found previously at localities on the Queensland mainland (Endean, Kenny, and Stephenson 1956). In particular the mainland upper barnacle (Chthamalus) zone was not represented at Heron I., and the species forming the mainland lower barnacle zone (Tetraclita squamosa (Bruguiere) ) was replaced by a different species (Tetraclita vitiata Darwin). Also the characteristic algal zone of mainland localities was replaced by a lithothamnion-zoanthid-coral zone. In order to investigate the possibility of a gradual transition from the mainland type zonation to that found on the Great Barrier Reef, as exemplified by Heron I. zonation, the species composition and general ecology of intertidal organisms inhabiting a series of continental islands lying off the Queensland coast between lat. 16� and 22� S. were investigated. The fauna of these islands was found to be closely allied to that of the mainland. There was, however, an intrusion of corals and zoanthids on the more exposed of the islands visited which lie between lat. 20� and 22�S., and also on the more northerly of the islands visited. The biogeographical implications of these findings are discussed, and it is noted that the results of the present investigation support the contention of Whitley (1932) that a longitudinal division of the Queensland marine fauna into "Solanderian" and "Banksian" elements is warranted. Accounts are also given of the major environmental factors that might affect specific composition and zonation patterns at the localities investigated. Analyses of these have given much information on the general ecology and distribution of many Queensland intertidal species. Thls information is discussed. Of particular interest was the finding that the Peronian barnacle Tetraclita rosea (Krauss) has extended its range,to the north of the biogeographical boundary situated near lat. 25� S. by colonizing the more exposed of the continental islands.

MARKET VALUE DETERMINATION OF THE CITY LANDs IN GATCHINA OF LENINGRAD REGION

2016 ◽  
pp. 12-18
Author(s):  
Vasiliy Kovyazin ◽  
◽  
Ol’ga Lepikhina ◽  
Viktor Zimin
Keyword(s):  
Market Value ◽  
Leningrad Region ◽  
Value Determination ◽  
The City

Caught in the “Traps of Managed Competition”? Examples of Russian Health Care Reforms from St. Petersburg and the Leningrad Region

1997 ◽  
Vol 27 (4) ◽  
pp. 661-686 ◽  
Author(s):  
Sarah Curtis ◽  
Natasha Petukhova ◽  
Galina Sezonova ◽  
Nadia Netsenko
Keyword(s):  
Health Care ◽  
Health Service ◽  
Service Systems ◽  
Leningrad Region ◽  
Managed Competition ◽  
Health Care Reforms ◽  
Future Policy ◽  
The City ◽  
Different Parts

Elements of a “managed market” for health services have been introduced into the Russian health care system, which under the Soviet regime was run as a comprehensive state-managed system. The authors examine the recent development of health service reforms in a case study of the city of St. Petersburg and the surrounding Leningrad region. Evidence from key informants and a local survey of service users shows how alternative models of the managed market are being introduced in different parts of the study area. A critical review of the market-oriented strategies for reform emerging in the case study suggests that such reforms carry risks associated with the “traps of managed competition.” Future policy for health service systems in Russia must take these risks more fully into account.

scholarly journals Thrips (Thysanoptera, Insecta) of the Asteraceae family plants occurring in areas with different levels of anthropopressure in Lublin (Eastern Poland) / Wciornastki (Thysanoptera, Insecta) zebrane z miejsc o różnym stopniu antropopresji w Lublinie na roślinach z rodziny Asteraceae

2013 ◽  
Vol 24 (3) ◽  
pp. 39-44
Author(s):  
Katarzyna Czepiel-Mil ◽  
Danuta Kowalczyk-Pecka
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Urban Environment ◽  
Taraxacum Officinale ◽  
Adverse Conditions ◽  
Thrips Species ◽  
The City ◽  
Asteraceae Family ◽  
Different Levels ◽  
Different Parts

Abstract In the years 2001-2003, a study on thrips (Thysanoptera) was conducted in Lublin (south-eastern Poland). The aim of the research was to determine the species composition of the insects on selected plants from the Asteraceae family collected at sights of varying anthropopressures in Lublin. Fifteen designated sites, classified as semi-natural and anthropogenic, were located in different parts of the city. As a result of the study, the occurrence of 36 thrips species was recorded. The species dominating in the whole material were: Thrips physapus, Thrips trehernei, Thrips validus and Frankliniella intonsa. The greatest thrips species variety was characteristic of the following plant species: Hieracium umbellatum, Matricaria perforata, Taraxacum officinale, Erigeron strigosus. The research conducted shows that urban environment is quite rich in terms of thrips species diversity. The number of species caught indicates their tolerance to moderately adverse conditions in the city. The most important factor affecting the number of collected species is plant diversity. The sites of different levels of athropopressure varied both in their species composition and in the number of thrips found.

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