Identification of phytogeographical borders using grassland vegetation data

Biologia ◽  
2010 ◽  
Vol 65 (4) ◽  
Author(s):  
Ingrid Turisová ◽  
Tomáš Hlásny
Keyword(s):  
Ordinary Kriging ◽  
Floristic Composition ◽  
Volcanic Field ◽  
Research Area ◽  
Ecological Indicator ◽  
Grassland Vegetation ◽  
Diagnostic Species ◽  
West Carpathians ◽  
The Subject ◽  
Phi Coefficient

AbstractThe paper proposes a methodology of phytogeographical regionalisation using grassland vegetation data. The research area is located in the West Carpathians, in volcanic field with adjacent post-tectonic basins and valleys in the Central Slovakia. The applied techniques were variogram modelling, ordinary kriging and lattice wombling. Phi coefficient was used to determine the diagnostic species of proposed phytochoria (fidelity test). The 1978 unevenly distributed grassland polygons that comprised 1071 taxa of vascular plants were the subject of the analyses. Ecological indicator values for temperature (EITs), weighted by species coverage in the Tansley scale in each grassland polygon, were used for the modelling. The gradients in the surface of the indicator value produced by ordinary kriging were analyzed. The steepest gradients indicate the most radical changes in floristic composition typical of border locations.The steepest gradient divides the study area into main cold and main warm regions. Less intensive gradients determined the position of 15 subdistricts. Subsequently, 7 out of 15 subdistricts were merged on the basis of similar natural conditions and floristic composition into 3 districts.Ten, mostly thermophilous, diagnostic species were determined for the main warm region. Fourteen, mostly psychrophilous, diagnostic species were determined for the main cold region. Subsequently, diagnostic species were determined for districts. High number of diagnostic species (57) characterize the Pol’ana Mts district. Eleven diagnostic species were determined for the Zvolenská kotlina basin district. The Javorie and Ostrôžy Mts district was very poorly diferentiated with 3 diagnostic species.Such evaluation suggests that proposed methodology allowed for the identification of phytochoria with specific floristic composition. The obtained results are discussed.

scholarly journals Stipetum novakii ass. nova – a new association of serpentine rocky grassland vegetation (Halacsyetalia sendtneri) in Serbia

2013 ◽  
Vol 72 (1) ◽  
pp. 169-184 ◽  
Author(s):  
Eva N. Kabaš ◽  
Antun A. Alegro ◽  
Nevena V. Kuzmanović ◽  
Ksenija M. Jakovljević ◽  
Snežana S. Vukojičić ◽  
...  
Keyword(s):  
Floristic Composition ◽  
Equal Size ◽  
Grassland Vegetation ◽  
Diagnostic Species ◽  
New Association ◽  
Grassland Communities

Abstract Phytosociological characteristics of grassland communities above serpentines (order Halacsyetalia sendtneri H. Ritter-Studnčka 1970) in Serbia, are analyzed according to Braun-Blanquet methodology. In order to detect the basic floristic differentiation of analyzed communities ordinary correspondence analysiswas applied. Cluster analysiswas also performed to see the structure and separation of the communities based on the floristic composition. In order to determine diagnostic species, fidelity indices with presence/ absence data and the size of all groups standardized to equal size were calculated. The new association Stipetum novakii is described in open rocky serpentine grasslands in Brdjani Gorge.

Spatial modelling-based approach to phytogeographical regionalization using grassland vegetation data

2012 ◽  
Vol 7 (2) ◽  
pp. 318-326
Author(s):  
Tomáš Hlásny ◽  
Ingrid Turisová
Keyword(s):  
Floristic Composition ◽  
Spatial Modelling ◽  
Mean Value ◽  
Ecological Indicator ◽  
Indicator Values ◽  
Grassland Vegetation ◽  
Classification Analysis ◽  
Study Region ◽  
Spatial Continuity ◽  
Sample Data

AbstractWe presented a methodology for drawing continuous boundaries in the landscape differentiating between regions with different floristic composition. A region in Central Slovakia covering 2,445 km2 was investigated. Ecological indicator values for temperature (EIT) in 1,978 grassland polygons were analysed. Ordinary kriging was used to interpolate EIT across the study region. Lattice wombling was used to identify the most intensive gradients in EIT and to draw boundaries, while ANOVA was used for post-classification analysis. A strong pattern of spatial continuity was present in EIT assigned to species in grassland polygons allowing for drawing continuous boundaries in the landscape. The study region was divided into 15 districts using the proposed method. Post-classification analysis indicated that 17 out of 23 adjacent districts were found to differ significantly in term of mean value of source samples. The results implied the need for incorporating spatial autocorrelation in sample data into post-classification analysis; such factor is often neglected in ecological research. The presented findings suggested broader applicability of the proposed method for spatial modelling, as vegetation data is widely accessible in databases for many regions of Europe.

scholarly journals Syntaxonomical and ecological diversity of the class Polygono-Poetea annuae in Bulgaria

2022 ◽  
Vol 81 (1) ◽  
Author(s):  
Kiril Vassilev ◽  
Momchil Nazarov ◽  
Constantin Mardari ◽  
Borislav Grigorov ◽  
Stoyan Georgiev ◽  
...  
Keyword(s):  
Floristic Composition ◽  
The Other ◽  
Soil Conditions ◽  
Ecological Diversity ◽  
Numerical Classification ◽  
High Radiation ◽  
Diagnostic Species ◽  
Software Packages ◽  
Vegetation Database ◽  
Phi Coefficient

Class Polygono-Poetea annuae Rivas-Mart. 1975 includes therophyte-rich vegetation on trampled habitats. The study presents the first analysis of the syntaxonomy of this class and its ecology in Bulgaria. One hundred seventy-five relevés from this class were collected and stored in the Balkan Vegetation Database during 2017–2020. Numerical classification (hierarchical divisive) and ordination were performed by JUICE and CANOCO software packages. Diagnostic species were determined by calculating the Phi-coefficient. Four associations, Sclerochloo durae-Polygonetum arenastri, Polygonetum arenastri, Lolio-Polygonetum arenastri and Poëtum annuae, were recognized. Their floristic composition has been shaped mainly by climatic and soil conditions. Sclerochloo durae-Polygonetum arenastri association has been found at lower altitudes, occurring in fully lighted habitats with high radiation, whereas Poëtum annuae has been found at higher altitudes in wetter and cooler areas. On the other hand, stands of Polygonetum arenastri have been found on nutrient-rich soils, whereas communities of Lolio-Polygonetum arenastri were distributed in warmer and nutrient-poor areas. The Polygono-Poetea annuae class is still poorly studied in Bulgaria and much more information from all regions of the country needs to be collected and analyzed.

SPATIAL FORMATION IN ARCADES: ANKARA-YENİŞEHİR ARCADES

2020 ◽  
Vol 0 (21) ◽  
pp. 0-0
Author(s):  
Merve KURT KIRAL ◽  
Emel AKIN
Keyword(s):  
18Th Century ◽  
Research Area ◽  
The Other ◽  
The West ◽  
Planning Decisions ◽  
Urban Buildings ◽  
Spatial Features ◽  
Trading Activities ◽  
The Subject ◽  
New Buildings

Spaces are conditioned by social conditions; on the other hand, social structure is affected by spaces. Arcades, the subject of this article, first appeared in Europe in the 18th century as a result of an increase in trading activities. The arcades in Ankara, which were started to be built in the 1950s together with increasing trading activities, contributed to the urban economy with intense activities of shopping, re-determined social and urban relations as essential places of everyday life and became distinctive urban buildings with their original building typologies and the function of maintaining public continuity in the area of private ownership. Aim: This study aims to study the process in which passages emerged and to analyze their spatial features and, in particular, to examine the spatial formation of the distinctive passages in Ankara on the basis of their causation. Method: In the article, spatial features of the passages in the West were mentioned, and the conditions of the period in which the passages in Ankara were built were briefly explained. Spatial analysis of the passages found in the research area were conducted, and the formation of these passages were analyzed together with their reasons. Results: Of the 31 arcades in Ankara, 27 were built between 1950 and 1980 on and around the Atatürk Boulevard in Yenişehir/Kizilay. As of the mid-1950s, new planning decisions which were made one after the other in the built-up area re-shaped the Boulevard and its surrounding as the existing buildings were demolished, allowing to construct new buildings with arcades or stores in their entrances. Their interior designs and connections to the streets are different from the arcades in the West. Conclusion: The present subdivision system and new planning decisions applied in property order shaped the passages which were peculiar to Ankara.

THE FORMATION OF THE HISTORICAL AND LITURGICAL RESEARCH AREA IN RUSSIAN ACADEMIC SCHOLARSHIP IN THE LATE 19TH – EARLY 20TH CENTURY. A COMPARATIVE ANALYSIS OF METHODOLOGICAL APPROACHES OF N.V. POKROVSKY AND I.A. KARABINOV

2021 ◽  
pp. 30-49
Author(s):  
Zoya M. Dashevskaya ◽  
Keyword(s):  
Research Methodology ◽  
Research Area ◽  
Academic Science ◽  
Scientific School ◽  
Academic Scholarship ◽  
Academic Courses ◽  
History Of ◽  
Christian Worship ◽  
The Subject ◽  
The 19Th Century

n the second half of the 19th century – especially in the period following the introduction of the Academic Constitution of 1869, and in the 1880s and continuing until the forced closure of Theological Academies after the Revolutionary coup – the historical and liturgical research area in Russian academic science experienced a period of its formation and flourishing. The subject of the article is a comparison of approaches to the study of the worship service history and analysis of the formation of the research methodology for teaching Liturgics by professors N.V. Pokrovsky and I.A. Karabinov of the St. Petersburg Theological Academy, where they taught the history of Christian worship from the 1880’s until its forced closure in 1918. Analysis and juxtapos- ing of academic courses in Liturgics allows defining the boundaries and content of the discipline in the period of its formation as well as considering the evolu- tion in research methodology and, more broadly, the formation of the Russian historical and liturgical scientific school. A comparison of the courses reveals the authors attitudes towards histori- cal sources material and its studies. Their own ideas about the provenance of various rites used in church worship characterize their views on the develop- ment of the liturgical tradition, expressing their approaches to its study and thereby form our picture of the establishment of historical Liturgics as a field of researchable knowledge.

scholarly journals ANALYSIS OF LAND COVER CHANGES IN THE AREA OF THE TOWN OF GORAŽDE

2020 ◽  
Vol 43 ◽  
pp. 37-46
Keyword(s):  
Land Cover ◽  
Spatial Planning ◽  
Geographical Location ◽  
Research Area ◽  
Google Earth ◽  
Land Cover Changes ◽  
The Third ◽  
Complete Procedure ◽  
The Subject ◽  
The Town

The subject of the research is the analysis of the land cover changes in the area of the town of Goražde. In the period after 1995, throughout the entire Bosnia and Herzegovina, a visible spontaneous spatial planning contributed to significant changes in the land cover. The research aims to determine how many changes have taken place in the last few decades in the researched area when it comes to land cover. The analysis is based on topographic maps from 1980, Google Earth images, then Corina Land Cover images from 2000, 2006, 2012, and 2018. Research on the topic was conducted through several phases. The first part of the paper refers to determining the geographical location of the research area and defining all its components. The second part of the paper deals with a detailed analysis of all categories of land cover in the last twenty years. The third part of the paper involves a comparative analysis of quantitative and qualitative indicators of land cover in the town of Goražde. The complete procedure of the analysis was performed using GIS, where the corresponding databases were created and a cartographic visualization for the investigated area was performed.

scholarly journals Russian and International Contours of Precarious Employment

2020 ◽  
Vol 16 (1) ◽  
pp. 51-60
Author(s):  
Ivan D. Matskulyak
Keyword(s):  
Technological Progress ◽  
Research Area ◽  
Domestic Economy ◽  
Decent Work ◽  
Precarious Employment ◽  
Management Personnel ◽  
Wide Range ◽  
The World ◽  
Actual Content ◽  
The Subject

The Object of the Study. Socioeconomic processes and phenomena characterized as an unsustainable employment and reflected in the collective monograph published in Rossiya among the first as well as its main provisions, conclusions and recommendations. The Subject of the Study is expressed by the combination of socioeconomic relations between market-based economic entities regarding the widespread development in recent years in the world, including the Rossiyskaya Federatsiya, the precarious employment of the population and the consequences of this process. The Purpose of the Study is to attract the notice of a wide range of management personnel of both state authorities and economic bodies, as well as employers, legislators, scientists, etc., to the problem of unsustainable employment, the need of its effectively solve, especially in conditions of intensification of transformation of the domestic economy. The Main Provisions of the Article cover all six sections, including 30 paragraphs of the monograph studied, authored by 41 specialist-scientists, professionally engaged in the designated research area. The author, on the basis of the actual content of the book, has tried to present all the aspects, to convey the variety of shades of the process of unsustainable employment reflected in the monographic research. It applies both the domestic experience and international practice. The problems of the unsustainable employment are revealed compared to decent work. Their dependence on the scientific and technological progress is considered. The domestic and foreign experience of the personnel reduction is summarized on the example of a flexible employment. Risks of unsustainable employment are identified and directions of their prevention are formulated. The characteristics of precarious employment of different groups of workers - women, pensioners and others working in similar conditions of specific industries - are characterized as well as the legal coverage of unsustainable workers is analyzed, and special attention is paid to external migrants and functioning numerous institutions in the investigated economy sectors.

FROM THE COHORT OF OUTSTANDING SCIENTISTS OF TIMIRYAZEV UNIVERSITY TO THE 120TH ANNIVERSARY OF VSEVOLOD KLECHKOVSKIY

2020 ◽  
pp. 111-117
Author(s):  
S.P. TORSHIN ◽  
◽  
G.A. SMOLINA
Keyword(s):  
Significant Contribution ◽  
Assistant Professor ◽  
Research Area ◽  
Subject Area ◽  
Associate Professor ◽  
Creative Activity ◽  
Independent Research ◽  
The Subject ◽  
120Th Anniversary ◽  
Research Institute

The paper shows the significant contribution of Vsevolod Makrichievich Klechkovskiy to the development of agrochemistry and radioecology. V.M. Klechkovskiy worked all his life at the Department of Agrochemistry of Timiryazev Academy as an assistant professor, associate professor, professor, and Head of the Department. His creative activity was associated with two areas of research – agrochemistry and radioecology (the subject area established by him). In 1946, he was appointed Head of the Biophysical Laboratory (BPhL) at the Department of Agrochemistry and made a significant contribution to the development of radioecology as an independent research area. The authors demonstrate that the Biophysical Laboratory laid the foundation for establishing the All-Union Research Institute of Agricultural Radiology and Agroecology.

scholarly journals An Extensive Research on Knowledge Mining Systems:A Review

2018 ◽  
Vol 7 (3.6) ◽  
pp. 94
Author(s):  
K Kalaiselvi ◽  
J Sowmiya
Keyword(s):  
Higher Education ◽  
Review Paper ◽  
Research Area ◽  
Huge Amount ◽  
Research Knowledge ◽  
Mining System ◽  
Knowledge Mining ◽  
Amount Of Information ◽  
The Subject ◽  
Fertile Area

With the huge amount of information available, the analysis over the data is the fertile area of knowledge mining research. Knowledge mining is the recent hot and promising research area. Knowledge mining is defined as the process of obtaining relevant knowledge from the pool of resources. In this review paper, we surveyed about the prior works carried out in the knowledge mining systems. We explore the primitives of knowledge mining systems. Attribute imbalance is the primary issue prevails in the knowledge mining process. In the field of higher education, most of the attributes are shared among the data features. In addition a precise introduction to knowledge mining along with its process is presented to get acquainted with the vital information on the subject of knowledge mining system  

Studies of the grassland vegetation in the kawatabi special research area of the Japanese IBP

Vegetatio ◽  
1973 ◽  
Vol 28 (1-2) ◽  
pp. 41-56 ◽  
Author(s):  
H. Lieth ◽  
M. Numata ◽  
T. Suganuma
Keyword(s):  
Research Area ◽  
Grassland Vegetation
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