scholarly journals PHYTOSOCIOLOGICAL STUDIES ON CALCAREOUS SCREES FROM MERIDIONAL CARPATHIANS (ROMANIA)

2021 ◽  
Vol 10 (19) ◽  
pp. 209-219
Author(s):  
Monica Angela Neblea ◽  
Mădălina Cristina Marian
Keyword(s):  
Euclidean Distance ◽  
Point Of View ◽  
Hierarchical Analysis ◽  
Natural Habitats ◽  
Plant Associations ◽  
Ward Method

The calcareous screes are very well represented in Meridional Carpathians, especially in Piatra Craiului Mountains. The paper analyzes the vegetation of these natural habitats from phytosociological point of view. There are 11 plant associations characteristic for calcareous screes in this region, as follows: Cerastio lerchenfeldiani-Papaveretum Boşcaiu, Täuber et Coldea 1977, Cardaminopsio neglectae-Papaveretum Coldea et Pânzaru 1986, Acino-Galietum anisophylli Beldie 1967, Doronico columnae-Rumicetum scutati Boşcaiu et al. 1977, Saxifragetum moschatae-aizoidis Boşcaiu 1971, Cerastio transsilvanici-Galietum lucidi M. Boșcaiu et al. 1998, Achnatheretum calamagrostis Br.- Bl. 1918, Gymnocarpietum robertianae (Kaiser 1926) Tx. 1937, Sedo fabariae-Geranietum macrorrhizi Boşcaiu et Täuber 1977, Thymetum comosi Pop et Hodişan 1963, Parietarietum officinalis Csűrös 1958. The plant associations were characterized and the Relative Euclidean distance was calculated on the basis of the Ward method. The hierarchical analysis revealed the distribution of the plant associations in two clusters corresponding to the Papavero-Thymion pulcherrimi I. Pop 1968 and Stipion calamagrostis Jenny-Lips ex Br.-Bl. 1950 alliances.

scholarly journals Approbation of Methods for Assessing Transport Services Quality

2019 ◽  
Vol 17 (2) ◽  
pp. 154-164
Author(s):  
M. A. Kudryashov ◽  
R. S. Ayriev ◽  
A. V. Prokopenkov
Keyword(s):  
Public Service ◽  
Euclidean Distance ◽  
Services Quality ◽  
Hierarchical Cluster ◽  
Passenger Transport ◽  
Transport Services ◽  
Provision Of Services ◽  
The City ◽  
Ward Method

The article presents the results of approbation of the methodology for assessing the quality of public service by urban passenger transport of municipal routes, which are assigned to commercial enterprises under the new management model, regarding the city ofMoscow. The model provides for provision of services of regular transportation of passengers and baggage on the basis of public contracts with city administration. According to the results of a previously performed hierarchical cluster analysis, where the Euclidean distance with a single rule for cluster unification was used as a measure of proximity using the Ward method, ten routes were selected for assessment. Key parameters for assessment the quality of provided services comprised accessibility of stopping points, of social facilities, of transport facilities for people with disabilities, information facilities, price affordability, comfort, optimal passenger capacities of vehicle, and ecological friendliness. Conclusions have been drawn that the level of quality of transport services for passengers inMoscowis high.

scholarly journals The Results of Plant Monitoring in the Semistozhki Area of Stavropol Region

2019 ◽  
Author(s):  
E N Seliverstova ◽  
V V Khrapach ◽  
V V Volkova ◽  
N V Shegrinets
Keyword(s):  
Biological Diversity ◽  
Botanical Garden ◽  
Ex Situ ◽  
Limiting Factors ◽  
Convention On Biological Diversity ◽  
Distribution Area ◽  
Natural Habitats ◽  
Botanical Gardens ◽  
Plant Associations ◽  
Stavropol Region

Preserving biodiversity is a global problem that was reflected in the Convention on Biological Diversity which appeared in 1992. The adoption of the Convention was an answer to the intensified problem of a significant reduction in the diversity of genetic resources. Botanical gardens are the main centres for preserving the biodiversity of plants that solve the problem of preserving the gene pool. One of the main tasks of botanical gardens is to monitor plant populations in their natural habitats in situ. This paper describes the monitoring of the current state of peonies and sedges in the Semistozhki area of the Andropov district in the Stavropol region. The research determines the growing locations and the belongingness of species to plant associations in the vegetation variety of the Stavropol region. It also determines the species that may be treated as rare due to their limited distribution area. The territory is marked by the presence of Paeonia tenuifolia L., which is a tertiary relict, and Paeonia biebersteiniana Rupr., which is subendimic for Stavropol region. Rear species with low numbers that are not threatened by grave danger of extinction are also present. Carex hordeistichos Vill. and c. otrubae Podp. species in the area are small in number. Their populations in the area are inadequate with young, vegetative and strong specimens lacking. The limiting factors are represented by human agricultural activities. Several specimens of a narrow-leaved peony of pink colour and a big number of petals were planted on an experimental stretch of the botanical garden to continue the analysis ex-situ.

scholarly journals Spiders (Araneae) of selected sinkholes of Moravský kras Protected Landscape Area (Czech Republic)

2012 ◽  
Vol 60 (1) ◽  
pp. 57-70 ◽  
Author(s):  
Vladimír Hula ◽  
Ondřej Košulič ◽  
Pavla Šťastná
Keyword(s):  
Czech Republic ◽  
Agricultural Land ◽  
Point Of View ◽  
Critically Endangered ◽  
Class I ◽  
Bioindicator Species ◽  
Natural Habitats ◽  
Evaluation Point ◽  
Disturbed Habitats ◽  
Time Of Collection

In this study, we present faunistic data about spiders in selected sinkholes of northern part of Moravský kras Protected Landscape Area. Time of collection was established in the following terms: 24 March 2010 – 22 September 2010. We collected altogether 5742 adult specimens which were determined to 59 species of 14 families. We found two very rare spiders (critically endangered Porrhomma errans and endangered Walckenaeria monoceros) and several interesting, rarely collected bioindicator species (Alopecosa trabalis, Mecopisthes silus, Zelotes longipes). From the bioindicative evaluation point of view, 44% of found species belong to species with connection to natural habitats, 37% belong to species preferring semi-natural habitats, and 19% belong to species of disturbed habitats. From the relictness point of view, majority of species was of the expansive category (53%), 40% of class II relicts, and only 7% of class I relicts. Sink holes did not increase total biodiversity of agricultural land too much because of their relative small size.

Analysis of the Tourism Activities in the Protected Natural Areas of Vrancea County

2016 ◽  
Vol 16 (2) ◽  
pp. 33-43
Author(s):  
Andreea Georgiana Stănilă ◽  
Constantin Ionuț Barbu
Keyword(s):  
Natura 2000 ◽  
Local Communities ◽  
Point Of View ◽  
Development Programs ◽  
Natural Areas ◽  
Natural Habitats ◽  
Protected Natural Areas ◽  
Sustainability Principles ◽  
Special Protection

Abstract Vrancea County, through its specific physical-geographical region of Romania is replete with natural elements with unique value. The diversity of species and natural habitats, the high density of large carnivores are the main reasons that led to the establishment of protected natural areas. As regards the Natura 2000 European network, in the county were declared a number of 11 Sites of Community Importance and Sites of Special Protection 3 as a reconfirmation of the value of biodiversity. These have given rise to some touristic activities becoming tourist attraction places for nature lovers. The presence of tourists in a protected area can threaten the environment, but if tourism is managed according to sustainability principles can bring a number of benefits to both the environment and local communities. From this point of view, Vrancea stays at tourist underdevelopment, so economical, due to poor promotion nationally and underinvestment. Thanks to the initiative of associations and relevant organizations were implemented European sustainable development programs that have had a real impact on protected areas in Vrancea County. The results obtained have resulted in actions for biodiversity conservation, tourism planning of the territory and contribute to increased quality of life for local communities. These projects are proof that this region of the country presents all the strengths to develop ecotourism plan.

scholarly journals ANALISIS KLASTER METODE WARD DAN AVERAGE LINKAGE DENGAN VALIDASI DUNN INDEX DAN KOEFISIEN KORELASI COPHENETIC (Studi Kasus: Kecelakaan Lalu Lintas Berdasarkan Jenis Kendaraan Tiap Kabupaten/Kota di Jawa Tengah Tahun 2018)

2019 ◽  
Vol 8 (4) ◽  
pp. 486-495
Author(s):  
Sisca Indah Pratiwi ◽  
Tatik Widiharih ◽  
Arief Rachman Hakim
Keyword(s):  
Cluster Analysis ◽  
Euclidean Distance ◽  
Traffic Accidents ◽  
Optimal Number ◽  
Cophenetic Correlation ◽  
Central Java ◽  
Average Linkage ◽  
Linkage Method ◽  
Ward Method ◽  
Squared Euclidean Distance

Based on Central Java Regional Police data, traffic accidents from 2017 to 2018 increased from 17.522 to 19.016 or 8,54 percent. To reduce the number of traffic accidents in Central Java, the initial step was carried out by grouping districts/cities that had the same accident level characteristics based on vehicle type with cluster analysis. The ward and average linkage method is a hierarchical cluster analysis method. ward method can maximize cluster homogeneity. While the average linkage method can generate clusters with small cluster variants. In this study using a measure of squared euclidean distance to measure the similarity between pairs of objects. To determine the quality of clustering results, the validation dunn index and cophenetic coefficients corelation are used. Based on the results of the clustering, the optimal number of clusters is obtained at q = 5 for the average linkage method with the results of validation dunn index = 0,08571196 and the rcoph = 0,687458. Keywords: Accidents, Cluster Analysis, Ward Method, Average linkage, Squared Euclidean Distance, Dunn Index, Cophenetic Correlation Coefficient

scholarly journals Morphostructural Characterization of the Black Creole Goat Raised in Central Mexico, a Currently Threatened Zoogenetic Resource

Animals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 459 ◽  
Author(s):  
Juan Carlos Silva-Jarquin ◽  
Sergio Iván Román-Ponce ◽  
Marina Durán-Aguilar ◽  
Héctor Raymundo Vera-Ávila ◽  
Víctor Hugo Cambrón-Sandoval ◽  
...  
Keyword(s):  
Euclidean Distance ◽  
Descriptive Statistics ◽  
Hierarchical Analysis ◽  
Harmonic Model ◽  
The Matrix ◽  
Components Analysis ◽  
Creole Goat ◽  
Positive Correlations ◽  
The Relationship

In order to evaluate the morphostructural variability of the Black Creole goat (BCG), the present study was carried out in a population of 226 animals from eight localities and 14 morphometric variables were taken. Descriptive statistics for the variables were obtained and 10 of these presented variation coefficients of less than 10%. The degree of harmony in the morphology of the population was determined by the number of positive correlations with significant differences (p < 0.05), including a correlation test using Spearman’s method. In order to reduce the matrix of variables, a principal components analysis was performed, and it was evaluated based on Kaiser’s criteria (eigenvalue > 1). Finally, a hierarchical analysis of conglomerates using Ward’s method was performed using the Euclidean distance to evaluate the distances among localities. Morphometric variables were also included to visualize the relationship among the localities and their average per variable. The results showed that the animals evaluated presented a certain degree of homogeneity and maintained a highly harmonic model. The BCG population showed a high aptitude for milk production, which confirmed the zootechnical purpose of the breed. The BCG populations evaluated maintain similar morphostructural profiles specific to them that can distinguish this population from other animal breeds.

scholarly journals Consumer Segment Based on Food Quality Dimension

2021 ◽  
Vol 56 (2) ◽  
pp. 512-523
Author(s):  
Hanifa Hasna Perdana ◽  
Fernianda Rahayu Hermiatin ◽  
Tomy Perdana ◽  
Agriani Hermita Sadeli ◽  
Velanda Ahtayary Putri
Keyword(s):  
Cluster Analysis ◽  
Supply Chain ◽  
Food Quality ◽  
Research Result ◽  
New Product ◽  
Point Of View ◽  
Fresh Food ◽  
Consumer Segment ◽  
Insight Into ◽  
Ward Method

The consumer has a different point of view when they decide to buy food. It depends on their desire for food quality. The actors in the supply chain may adjust their business to provide the quality that meets consumer demand. This study determines consumer segments based on quality, namely search, experience, and credence characteristics. Homogenous groups identify using k-means cluster analysis. Ward method used to decide the most exact number of clusters. The analysis based on consumer perceives on fresh food quality conducts on 238 respondents. The cluster analysis shows that there are four different groups. The first group consists of consumers who have a serious concern about new product quality. Also, there is a group which only emphasizes experience characteristics. In contrast, the second and fourth groups do not pay attention to quality. The research result represents a new insight into consumer segmentation through a study focus on quality characteristics. The result is to understand and improve marketing and supply chain development.

scholarly journals Remnants of naturalness in a reclaimed land of central Italy

2021 ◽  
Vol 11 ◽  
pp. 9-30
Author(s):  
Gianmaria Bonari ◽  
Tiberio Fiaschi ◽  
Emanuele Fanfarillo ◽  
Francesco Roma-Marzio ◽  
Simona Sarmati ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Land Use Changes ◽  
Central Italy ◽  
Point Of View ◽  
Natural Habitats ◽  
Reclaimed Land ◽  
Species Of Conservation Concern ◽  
Study Case ◽  
Conservation Concern ◽  
Eurasian Species

Wetlands are among the most fragile habitats on Earth and have often undergone major environmental changes. As a study case in this context, the present work aims at increasing the floristic knowledge of a reclaimed land now turned into an agricultural lowland with scarce patches of natural habitats. The study area is named Piana di Rosia, and it is located in southern Tuscany (Italy). The compiled checklist consists of 451 specific and subspecific taxa of vascular plants. The life-form spectrum shows a predominance of hemicryptophytes, followed by therophytes. The chorological spectrum highlights a co-dominance of Euri-Mediterranean and Eurasian species along with many widely distributed species. The checklist includes seven species of conservation concern, three Italian endemics (Crocus etruscus Parl., Polygala vulgaris L. subsp. valdarnensis (Fiori) Arrigoni, and Scabiosa uniseta Savi), 41 alien species, 21 segetal species, and 11 aquatic macrophytes of which five helophytes and six hydrophytes. This study suggests that irreversible land-use changes in wetlands can lead towards a simplification of the flora. However, despite the deep transformations that the former wetland has undergone, the presence of some aquatic and protected taxa is interesting. From a conservation point of view, the natural value of this agricultural area could be enhanced and its current management partly reconsidered, thus preserving the remnants of naturalness present.

scholarly journals Variability of the content and quality of some active substances within Achillea millefolium complex

2011 ◽  
Vol 30 (No. 1) ◽  
pp. 7-13 ◽  
Author(s):  
Š. Špinarová ◽  
K. Petříková
Keyword(s):  
Czech Republic ◽  
Essential Oil ◽  
Oil Content ◽  
Point Of View ◽  
Achillea Millefolium ◽  
Gas Liquid Chromatography ◽  
Flavonoid Content ◽  
Natural Habitats ◽  
The Czech Republic ◽  
Active Substances

The present paper compares the production of active substances in different subspecies of Achillea millefolium complex growing in the Czech Republic. Representatives of 7 subspecies of A. millefolium complex (A. setacea Waldst. et Kit., A. asplenifolia Vent., A. pratensis Saukel et Langer, A. collina Rchb., A. styriaca Saukel et Langer subsp. bohemica, A. millefolium subsp. millefolium, A. pannonica Scheele) and several natural hybrids of Achillea L. were collected from 75 natural habitats in different parts of the Czech Republic. Plants were cultivated to investigate plant growth and contents of some effective compounds during 1997&ndash;1999. Development of plants was divided into 7 typical phenological phases. From the point of view of active substance production, the stage of early flowering was found as the most suitable phase for Achillea (yarrow) harvest. Air-dried powdered flowering heads were analysed for essential oil, tannin and flavonoid content. The essential oil content was obtained by hydro-distillation; the composition of essential oil was analysed by means of gas-liquid chromatography. The total essential oil content of the examined yarrow species ranged between 0.05% and 0.88% of dry matter; ecotypes of A. collina and some of its hybrids showed the best results with the highest content of deep blue essential oil. Content of tannins was determined according to PhBs IV; flavonoids were expressed as an apigenin content by an internal method of pharmaceutical company IVAX ČR, a. s., Opava. The total flavonoid content was in the range of 1.37&ndash;3.97%; the content of tannins ranged from 0.02 to 0.64%. The highest content of flavonoids was determined in the sample of A. styriaca subsp. bohemica (3.97%); the highest content of tannins was found in an A. asplenifolia sample (0.64%). &nbsp;

Analysis of complex methods of industry assessment of tourist-recreational potential of territories of the republic of Belarus

2021 ◽  
Author(s):  
Victor Kolesnikovich
Keyword(s):  
Environmental Monitoring ◽  
Rural Areas ◽  
The State ◽  
Point Of View ◽  
Theory And Practice ◽  
Natural Habitats ◽  
Travel Restrictions ◽  
The Republic ◽  
Specific Species ◽  
The Impact

The subject of the research is a set of relations that are formed in the process of improving the national system and program of environmental monitoring in the Republic of Belarus. A set of indicators is presented on the basis of which it is possible to com- prehensively assess the state of the ecosystem of any territory in terms of the impact of tourism on the ecosystem. The purpose of the article is to develop scientific, methodological and practical proposals for the applied support of the mechanism for regulating the development of bio-ecotourism in order to develop sectoral conditions for the development of tourism in rural areas as well as the organization of a modern developed infrastructure of sectoral eco-oriented tourism. Methodology of the work. The theoretical and methodological basis of the study is a system of both general scientific and special methods of scientific knowledge, the fundamental provisions of modern economic and environmental theory and practice. In the scientific research, the following methods were used: monographic, in the formation of approaches, on the use of a set of indicators, on the basis of which it is possible to comprehensively assess the state of ecosystems of any territory from the point of view of tourism to the ecosystem. Results of the work – the applied use of scientific results of improved approaches for the development of the economy of the Republic of Belarus through the implementation of a mechanism for regulating the development of bio-ecotourism is proposed in order to develop sectoral conditions for the development of tourism in rural areas, as well as the organization of a modern developed infrastructure of sectoral eco-oriented tourism. Conclusions. These forecasting methods are most often used in carrying out normative forecasting, which is most important in today's changed conditions, with travel restrictions and delimitations. This scientific approach generalizes and is intended to formalize both bioecological design objects of research and the prospects for creating natural and artificial decorations using the features of reliefs and water areas. Both national systems and programs of environmental monitoring and international programs and research within the framework of the activities of large international organizations are based on the principles listed above (the Berne Convention is an international agreement that contains a provision on the protection of both natural habitats (biotopes) and and specific species of flora and fauna). Key words. Prognostics, Forecasting Subject (JV), Forecasting Object (EP), Formation Patterns, State, Development

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