scholarly journals Morphological characteristics pf Heifei saffron (Crocus heuffelianus Herb.) in the Podilsky Tovtry national nature park

2021 ◽  
Vol 84 (1) ◽  
pp. 34-38
Author(s):  
I. Odukalets ◽  
D. Tsymbaljuk ◽  
A. Grigorchuk
Keyword(s):  
Quercus Robur ◽  
Morphological Characteristics ◽  
General Characteristic ◽  
Anthropogenic Pressure ◽  
Morphological Parameters ◽  
Vegetative Cover ◽  
Nature Park ◽  
Number Of Individuals ◽  
Inflorescence Length

The article performs the results of the study of morphological parameters of individuals of the population of Crocus heuffelianus Herb on the territory of the nature reserve fund in the conditions of the Podilski Tovtry National Nature Park. The aim of our research was to study the morphometric parameters of Crocus heuffelianus to establish the adaptive capacity of the species in the study area. The morphometry of 50 generative individuals of Crocus heuffelianus growing in the 10th quarter of the Chemerivtsi environmental scientific-research department was performed.The general characteristic of the dynamics of vegetative cover on the investigated territory is representes basing on the conducted geobotanical descriptions of phytocenoses with the participation of Crocus heuffelianus Herb. Crocus heufellianus grows within 10 quarters in the forest crops Quercus robur L. (twenty-five years old), plantations of Pinus sylvestris L. (forty years old) and in the area with the group of QUERCO-FAGETEA BR.-BL. ET VLIEGER 1937, Fagetalia sylvaticae Pawі. 1928, Carpinion betuli Issler 1931 em. Mayer 1937 where eighty-year-old Carpinus betulus L., Quercus robur L. predominate. The analysis of measurements was carried out in the studied population of the species: plant height together with inflorescence; length and width of leaves. According to the results of our study, it has been found out that the height of plants in the population ranged from 7.6 cm to 14 cm. On average, this figure was 10.3 ± 2.0 cm. The size of the leaves of the predominant number of individuals in the population was characterized by the following anatomical and morphological parameters: width – 0.2-0.7 cm, length – 4.9-10.7 cm. It is shown that the vast majority of individuals of the species have one flower. Crocus heuffelianus has some variability of morphological features in the studied population. This indicates a significant potential for the species to grow in different environmental conditions, which can not be realized under conditions of increased anthropogenic pressure. The unique plain localities of this Montana-Alpine species on the territory of the Podilski Tovtry National Nature Park have a high sozological and scientific significance and require systematic, long-term monitoring.

scholarly journals Muroid rodents of the natural landmark “Chervone” (Dnister Canyon): specifics of species composition and community structure

2021 ◽  
Vol 2020 (20) ◽  
pp. 67-72
Author(s):  
Olga Shtyk ◽  
◽  
Zvenyslava Mamchur ◽  
Keyword(s):  
Species Composition ◽  
Myodes Glareolus ◽  
Anthropogenic Pressure ◽  
Microtus Arvalis ◽  
Apodemus Agrarius ◽  
Small Areas ◽  
Muroid Rodents ◽  
Nature Park ◽  
Number Of Individuals ◽  
Micromys Minutus

We conducted an analysis of populations of muroid rodents of the Dnister Canyon National Nature Park on the example of the natural landmark “Chervone.” For the investigation of the muroid rodents, we applied the trap-line method using factory-made live traps. According to methodology, the traps were located within a homogeneous habitat and four different sites were studies. Field data collected during 2017 and 2018 (summer and autumn cenuses) in four different habitats were analysed. The species composition of muroid rodents was investigated in four different biotopes (habitats) near the Dzurynskiy waterfall: hornbeam forest, pine forest, floodplain of the Dzuryn river, and pasture. The studied habitats were identified according to the National Habitat Catalogue of Ukraine. During the research, 75 specimens of muroid rodents were caught in 800 trap-nights. We recorded six species of muroid rodents: Sylvaemus tauricus L., Sylvaemus sylvaticus L., Apodemus agrarius Pallas, Micromys minutus L., Myodes glareolus Schreber, and Microtus arvalis Pallas. The most numerous species was Sylvaemus tauricus — 23 individuals (31 %). The quantity of other species was as follows: Apodemus agrarius (28 %), Sylvaemus sylvaticus (17 %), Myodes glareolus (16 %), Microtus arvalis (7 %), and Micromys minutus (1 %). The abundance of rodents was lower during the summer period compared to autumn, which can be related to the anthropogenic pressure on the investigated area. In addition, we investigated the sex and age structure of muroid rodent populations. We discovered that 45 individuals out of 75 were males and 35 were females. Additionally, 63 individuals were adults (Ad.) and 12 were juveniles (juv.). To summarise the received data, we calculated the number of individuals per 100 trap-nights. The abundance of individuals fluctuated from near 3 ind./100 t.-n. (Sylvaemus tauricus) to 0.125 ind./100 t.-n. (Micromys minutus). The relatively low species diversity of muroid rodents in the Dnister Canyon National Nature Park could be the result of small areas of insular habitats (separated territories with relatively similar landscape) and strong fragmentation of the researched area.

scholarly journals Long-Term Effect of Interferon on Keratinocytes That Maintain Human Papillomavirus Type 31

2002 ◽  
Vol 76 (17) ◽  
pp. 8864-8874 ◽  
Author(s):  
Yijan E. Chang ◽  
Loren Pena ◽  
Ganes C. Sen ◽  
Jung K. Park ◽  
Laimonis A. Laimins
Keyword(s):  
Human Papillomavirus ◽  
Morphological Characteristics ◽  
Human Keratinocytes ◽  
Inducible Promoter ◽  
Interferon Treatment ◽  
Long Term Effects ◽  
Long Term Effect ◽  
High Doses ◽  
Rates Of Growth

ABSTRACT The long-term effects of interferon treatment on cell lines that maintain human papillomavirus type 31 (HPV-31) episomes have been examined. High doses and prolonged interferon treatment resulted in growth arrest of HPV-positive cells, with a high percentage of cells undergoing apoptosis. These effects were not seen with interferon treatment of either normal human keratinocytes or cells derived from HPV-negative squamous carcinomas, which exhibited only slight decreases in their rates of growth. Within 2 weeks of the initiation of treatment, a population of HPV-31-positive cells that were resistant to interferon appeared consistently and reproducibly. The resistant cells had growth and morphological characteristics similar to those of untreated cells. Long-term interferon treatment of HPV-positive cells also resulted in a reduction in HPV episome levels but did not significantly decrease the number of integrated copies of HPV. Cells that maintained HPV genomes lacking E5 were sensitive to interferon, while cells expressing only the E6/E7 genes were resistant. In contrast, cells that expressed E2 from a tetracycline-inducible promoter were found to be significantly more sensitive to interferon treatment than parental cells. This suggests that at least a portion of the sensitivity to interferon could be mediated through the E2 protein. These studies indicate that cells maintaining HPV episomes are highly sensitive to interferon treatment but that resistant populations arise quickly.

scholarly journals A Long-Term Fine-Resolution Record of AVHRR Surface Temperatures for the Laurentian Great Lakes

2018 ◽  
Vol 10 (8) ◽  
pp. 1210
Author(s):  
Charles White ◽  
Andrew Heidinger ◽  
Steven Ackerman ◽  
Peter McIntyre
Keyword(s):  
Great Lakes ◽  
Morphological Characteristics ◽  
Laurentian Great Lakes ◽  
Environmental Research ◽  
Weighted Interpolation ◽  
Large Lakes ◽  
Fine Resolution ◽  
Observation Times ◽  
The Impact

Inland waters are warming at highly variable rates that often differ from regional air temperature trends. This variable warming is partially attributable to an individual lake’s geographical and morphological characteristics. In very large lakes, significant intralake variability in long-term warming trends has also been observed. In light of this intralake and interlake heterogeneity of lake surface water temperature (LSWT) and LSWT trends, we revisit the 1.1 km Advanced Very High Resolution Radiometer (AVHRR) record for the Laurentian Great Lakes. In this work, we have assembled a long-term (1986–2016) and high-spatial-resolution (0.018°) daily LSWT dataset using AVHRR record. Subtracting an empirically-determined mean diurnal cycle mitigates the effects of varying observation times. Adjustments in the georegistration of the images are made to reduce the impact of AVHRR navigational errors on the earlier platforms. Both the original daily composites, and a gap-filled product using locally weighted interpolation methods will be made available to support fine-scale physical and environmental research in the region.

scholarly journals Bovine colostrum supports the serum-free proliferation of epithelial cells but not of fibroblasts in long-term culture

1980 ◽  
Vol 84 (3) ◽  
pp. 808-814 ◽  
Author(s):  
M Klagsbrun
Keyword(s):  
Epithelial Cells ◽  
Mdck Cells ◽  
Calf Serum ◽  
Morphological Characteristics ◽  
Bovine Colostrum ◽  
Apical Surface ◽  
Early Passage ◽  
Rat Fibroblasts ◽  
Canine Kidney

Medium lacking serum but supplemented with milk will support the growth of sparse cells in culture. Milk obtained within 8 h after the birth of a calf (day 1 colostrum) is the most effective in supporting proliferation. In mixed cultures of early-passage bovine embryonic kidney (BEK) or early-passage calf kidney (CK) cells, both epithelial cells and fibroblasts grow in Dulbecco's modified eagle's medium (DMEM) supplemented with serum. However, only cells that appear to be epithelial-like grow in DMEM supplemented with colostrum. Sparse cultures of early-passage human and rat fibroblasts that grow readily in DMEM supplemented with serum do not grow in DMEM supplemented with colostrum. Canine kidney epithelial cells (MDCK), when plated sparsely, grow exponentially in DMEM supplemented with day 1 bovine colostrum. The generation time is 26 h, the same growth rate as in DMEM supplemented with calf serum. The MDCK cells can be subcultured and regrown to confluence repeatedly in colostrum-supplemented DMEM. Growth in DMEM supplemented with colostrum does not alter the morphological characteristics of the MDCK cells, which are polygonal, contain microvilli at the apical surface, and are connected by tight junctions and desmosomes. MDCK cells do not proliferate in DMEM supplemented with milk obtained 1 wk after the birth of a calf.

scholarly journals Fractal Analysis of Morphological Parameters of the Structure Materials

2019 ◽  
Author(s):  
Константин Макаренко ◽  
Konstantin Makarenko ◽  
Александр Никитин ◽  
Alexander Nikitin
Keyword(s):  
Elementary Particle ◽  
Fractal Analysis ◽  
Ductile Iron ◽  
Crystallization Process ◽  
Morphological Characteristics ◽  
Fractal Dimensions ◽  
Structural Materials ◽  
Morphological Parameters ◽  
Graphite Cell ◽  
Mesh Method

It is proposed to use the methods of fractal analysis to determine the morphological characteristics of the structure of structural materials. The questions of fractal aggregation of particles in the process of crystallization of ductile iron are considered, an austenitic-graphite cell is used as an elementary particle. Based on the mesh method, images of the microstructure of ductile irons are analysed and conclusions are drawn about the similarity of the nature of the process of their crystallization and fractal aggregation of particles. Based on the calculated fractal dimensions, a theory is proposed to explain the features of the crystallization process of ductile irons.

scholarly journals Flora and vegetation of dry grasslands of Northeastern Ukraine, and problems of diversity conservation

Hacquetia ◽  
2016 ◽  
Vol 15 (2) ◽  
pp. 49-62 ◽  
Author(s):  
Vladimir Ronkin ◽  
Galina Savchenko
Keyword(s):  
Grazing Intensity ◽  
Chernozem Soils ◽  
Key Factor ◽  
Nature Park ◽  
Regional Landscape ◽  
Long Term Monitoring ◽  
Steppe Grassland ◽  
Grassland Biodiversity ◽  
Term Monitoring

Abstract The aim of this study was to describe the flora and vegetation of the grasslands of Northeastern Ukraine and to analyse how the steppe vegetation responds to grazing or its abandonment. We studied two gully systems in the east of the Kharkiv Region: the Regional Landscape Park “The Velykyi Burluk-Steppe” (steppe grasslands on chernozem soils; 10 sites) and the National Nature Park “Dvorichanskyi” (steppe grasslands on chalky outcrops; 5 sites). Long-term monitoring data exist for both these sites starting in 1991, shortly after grazing intensity reduced. We recorded the major grassland plant communities (reflecting their successional status) as well as their dominant species. Tree and scrub encroachment increased after management ceased. We conclude that (i) heterogeneous grazing (including ungrazed patches) in space and time is necessary in order to preserve grassland biodiversity in our study system; (ii) erosion of chalky outcrops (natural erosion as well as driven by cattle grazing) is a key factor promoting the richness of cretaceous species in steppe grassland.

scholarly journals Recovery from bushfires: The experience of the 2003 Canberra bushfires three years after

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Peter Camilleri ◽  
Christine Healy ◽  
Elspeth Macdonald ◽  
Susan Nicholls ◽  
Jolyon Sykes ◽  
...  
Keyword(s):  
Psychosocial Problems ◽  
Recovery Process ◽  
Research Process ◽  
Community Recovery ◽  
Health And Wellbeing ◽  
Structural Loss ◽  
Property Losses ◽  
High Degree ◽  
Number Of Individuals

Introduction The Canberra Bushfires were one of the largest single day natural disasters in Australian history. A group of researchers from across disciplines and sectors (Universities and Government) undertook a major project to study the experiences of people directly affected by the fires in the recovery process. The research team was interested in the longer term recovery experience (approximately three years following the event). The paper briefly outlines the research process, provides an overview of the findings on people's bushfire experiences, health and wellbeing, and views on what helped in individual and community recovery. Methods Sixteen hundred households that had been registered with the Bushfire Recovery Centre were surveyed. Five hundred questionnaires were returned and forty people interviewed. The survey consisted of 126 items. The survey took between 40 to 70 minutes to complete and the response rate was 32%. Results Many respondents experienced substantial property losses as a result of this bushfire (74% reported structural loss or damage to dwellings), and 78% of people recalled that they felt a threat of death or injury to themselves or significant others during the fires. The majority of respondents were positive about their health and wellbeing. A considerable number of individuals reported ongoing health and psychosocial problems related to the bushfires. Respondents commented on what helped in the recovery process. Conclusion With adequate support many people may not experience lasting negative outcomes for their health, mental health or wellbeing in the years following a bushfire disaster. However, continuing adverse effects on health and wellbeing are expected in the context of a high degree of loss, threat to life, and life stressors. Long term support is required for those experiencing ongoing health and psychosocial problems related to the bushfire. Given the diversity of experiences post-disaster a range of recovery responses are required over a period of years to support community and individual needs.

scholarly journals The most significant fungi: Agents of wood decay in oak forests of Serbia

2007 ◽  
pp. 95-107
Author(s):  
Tanja Milijasevic ◽  
Dragan Karadzic
Keyword(s):  
Quercus Robur ◽  
Host Plants ◽  
Morphological Characteristics ◽  
Wood Decay ◽  
Oak Forests ◽  
Lignicolous Fungi ◽  
Fomes Fomentarius ◽  
Turkey Oak ◽  
Common Oak ◽  
Eleven Species

The most widely distributed oak species in Serbia are Q. petrea (sessile oak), Q. cerris (Turkey oak) and Q. frainetto (Hungarian oak) and Quercus robur (common oak), and lignicolous fungi are the major agents of wood decay in natural and coppice oak forests. In this research, 33 species of fungi were identified. Eleven species were described, among which the most significant are: Armillaria mellea, Fomes fomentarius, Hypoxylon deustum Laetiporus sulphureus, Lenzites quercina and Phellinus robustus. This paper presents the morphological characteristics of the most significant identified fungi, their distribution, host plants and significance.

scholarly journals AEROSPACE MONITORING OF THE FOREST ECOSYSTEM DYNAMICS WITHIN THE TERRITORY OF VRACHANSKI BALKAN NATURE PARK

2018 ◽  
pp. 41-46
Author(s):  
Adlin Dancheva
Keyword(s):  
Remote Sensing ◽  
Forest Ecosystem ◽  
Vegetation Index ◽  
Forest Ecosystems ◽  
Normalized Difference Vegetation Index ◽  
Remote Sensing And Gis ◽  
Ecosystem Dynamics ◽  
Anthropogenic Pressure ◽  
Water Index ◽  
Nature Park

In this paper the application of Remote Sensing and GIS as a means of performing aero – space monitoring of forest ecosystems dynamics is being considered. The purpose of this work is to create a model for monitoring the dynamic of forest ecosystems, based on Remote Sensing and GIS. The results of eco-monitoring can be used to update plans and policies for forest ecosystem management. The territory of Vrachanski Balkan Nature park was chosen as the subject of research as there is a certain anthropogenic pressure there. The results presented are obtained by spatial-time analysis of certain aerospace data indices. To carry out the study optical satellite images were used, on the basics of which three indices were calculated: Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI) and Normalized Difference Greenness Index (NDGI). A comparative analysis has been created and results of the degree of correlation between the different indices are presented, as well as indicators from the different test areas and related changes in the individual points in time. The results of the survey aim to assess the dynamics and condition of the forest vegetation on the territory of Vrachanski Balkan Nature park and can be utilised in activities related to monitoring, mapping and forest management.

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