scholarly journals Mycobiota features of aphyllophorales mushrooms in arid conditions of the south-east Euroopean Russia

2018 ◽  
Vol 11 ◽  
pp. 00027
Author(s):  
Nadezhda Kuragina
Keyword(s):  
Quercus Robur ◽  
Arid Zone ◽  
Great Majority ◽  
Study Group ◽  
Ecological Groups ◽  
Populus Alba ◽  
Number Of Species ◽  
Natural Park ◽  
Arid Conditions ◽  
Volgograd Region

An analysis of the biota of the aphyllophorales mushrooms carried out in the territory of the Volga-Akhtuba floodplain natural park within the Volgograd region. Based on the results of the conducted researches, 170 species of the study group are noted in the park. The great majority of identified species are saprotrophs on dead fallen wood. The largest number of species was found on Quercus robur, Populus alba, P. nigra и Fraxinus lanceolata. The largest number mushrooms ecological groups for moisture are mesophiles and xerophiles, which is typical for the arid zone.

scholarly journals Mycobiota of the natural sanctuary "Grigorova ravine" (Volgograd region)

2021 ◽  
pp. 39-45
Author(s):  
N. S. Kuragina ◽  
V. A. Sagalaev ◽  
V. V. Vorzheva ◽  
V. A. Dronova
Keyword(s):  
Systematic Study ◽  
Quercus Robur ◽  
Number Of Species ◽  
Volgograd Region ◽  
First Time ◽  
Trophic Analysis

For the first time, the systematic study of the mycobiota of the natural sanctuary «Grigorova ravine» of the Volgograd region was carried out. Mycological survey was conducted from April to November 2019-2020. During the research, 32 species of fungi were identified, belonging to 25 genera, 17 families, 7 orders and 2 divisions. According to a trophic analysis of all the species of fungi found, it can be said that bedding and humus saprotrophes prevail. There are 12 species. There are 10 species of saprotrophes on timber, and 4 species of parasites. Substrate analysis of wood-destroying fungi showed that the largest number of species is confined to the wood Quercus robur L. - 9 species, on Ulmuslaevis Pall. - 3 species. Two species of Ganodermalucidum (Curtis) P. Karst. and Battarreaphalloides (Dicks.) Pers. included in the regional Red Book of the Volgograd region.

scholarly journals Features of the state of the elm trees in the protective plantings of the arid zone of the Lower Volga region

2021 ◽  
Vol 2 (44) ◽  
pp. 4-4
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Arid Zone ◽  
Anthropogenic Pressure ◽  
Ecological Groups ◽  
Pest Population ◽  
Lower Volga Region ◽  
Volgograd Region ◽  
Forest Regions ◽  
Protective Forest ◽  
Favorable Conditions ◽  
Xanthogaleruca Luteola

In the Volgograd region, which belongs to low-forest regions, old-growth plantings pre-dominate, in which about 80,0% of the total dendrological composition is accounted for by repre-sentatives of the generic Ulmus complex. In the conditions of urbanization, the pathological pro-cesses and the weakening of woody plants increases. The stable weakened state of the elm trees is typical for squares and roadside plantings (Bsr = 3.28-3.36, respectively). Favorable conditions for maintaining the life optimum of elms are formed in parks, protective forest strips and arbore-tums, where healthy or weakened trees predominate (Bsr = 1,82-1,69-1,87 respectively). Phyl-lophages of different ecological groups are trophically related to the arboreal species of Ulmus. Among leaf-eating pests, Xanthogaleruca luteola Mull is of important economic importance. The pest population varies depending on the ecological conditions of the biotopes and Ulmus species. Keywords: ULMUS, PROTECTIVE FOREST STANDS, CONDITION CATEGORY, MONITORING, ANTHROPOGENIC PRESSURE, PESTS, PEST POPULATION

Cures in Childhood Cancer

1990 ◽  
Vol 11 (10) ◽  
pp. 311-317
Author(s):  
Allen R. Chauvenet ◽  
Marcia M. Wofford
Keyword(s):  
Childhood Cancer ◽  
Lymphoblastic Leukemia ◽  
Disease Free Survival ◽  
Great Majority ◽  
The United States ◽  
Study Group ◽  
Cooperative Study Group ◽  
Staging Systems ◽  
Diagnosis Of Cancer ◽  
Pediatric Oncology Group

Dramatic advances have been made in the treatment and potential cure of childhood cancer in the past two decades. In the case of the most common childhood malignancy, acute lymphoblastic leukemia, Mauer wrote in 1969 that he did "not think that the attempt to encourage parents by discussion of the possibility of a cure being found is any real help to the parents in facing the inevitable consequences of this disease." By 1973, Pochedley, while noting that the great majority of patients would die from disease, commented that "remissions can last five or more years and in a few patients they seem to be permanent." In 1989, Poplack stated that "about 60% of children with this disease achieve prolonged disease-free survival (over 5 years from diagnosis) and most of these patients are considered to be cured." In this review, data are presented in support of the conclusion that cures can be found for oven half of the children in this country in whom the diagnosis of cancer is made. The focus is not on clinical presentations but on staging systems, treatment principles, and outcomes for the most common pediatric malignancies. DATA ANALYSIS AND POTENTIAL BIAS IN DATA In the United States, the great majority of children with cancer are treated by pediatric hematologists/oncologists who are members of a cooperative study group (the Pediatric Oncology Group and the Children's Cancer Study Group); major reports of treatment results are based on data concerning children participating in groupwide, multi-institution studies, in single large institutions (usually with affiliates), or in intergroup studies.

Taxonomy, morphology, phylogenetic relationships and distribution of Micropsectra Kieffer, 1909 (Diptera: Chironomidae)

1982 ◽  
Vol 13 (4) ◽  
pp. 371-400 ◽  
Author(s):  
Lars Säwedal
Keyword(s):  
Phylogenetic Relationships ◽  
Morphological Characteristics ◽  
Great Majority ◽  
Type Material ◽  
Running Water ◽  
Larval Stages ◽  
Number Of Species ◽  
Worldwide Distribution ◽  
Doubtful Species ◽  
Standing Waters

AbstractMicropsectra Kieffer, 1909 is described and diagnoses presented for the imaginal (♂♂), pupal and larval stages; females of the notescens-group are described. The genus contains at present 83 species of which 9 are described on females. The type material for 16 of these species has not been found. 142 species which have been listed under Micropsectra are presented in alphabethical order. This list contains: name of author, reference to description. name of original genus, present status of species, reference to the paper in which this was listed, collection in which the type material is deposited. Morphological characteristics, evolutionary trends and phylogenetic relationships of Micropsectra are discussed. The genera Rheotanytarsus, Parapsectra, Krenopsectra, Micropsectra and Paratanytarsus form a monophyletic group within the tribe Tanytarsini. The group is referred to as the Micropsectra series. Rheotanytarsus, the most plesiomorphic genus in the series, has a worldwide distribution. This supports the conclusions reached by the morphological analysis. The genera Parapsectra and Krenopsectra are only known from the Palaearctic and Nearctic Regions. The great majority of Micropsectra species are found in the Palaearctic and Nearctic Regions. A smaller number of species occur in the northern part of the Oriental Region, which has the same environmental conditions as the adjacent areas of the Palaearctic Region. Two doubtful species have been reported from India. Genus Paratanytarsus has a wider distribution but clearly has its origin on the northern hemisphere. The habitat selection in the Micropsectra series is studied and compared with the phylogeny. The species within the plesiomorphic genera Rheotanytarsus, Parapsectra and Krenopsectra are found in streams and springs. In the more apomorphic genus Micropsectra many of the species occur in these types of habitats, though there are also a comparatively high number of species occurring in lakes. Paratanytarsus, the most apomorphic genus contains species which inhabit shallow standing waters. It seems probable that the ancestor of the Micropsectra series was an inhabitant of running water. A lectotype is designated for Tanytarsus retusus Goetghebuer.

Male reproductive characteristics of sheep in the Indian arid zone

1981 ◽  
Vol 97 (2) ◽  
pp. 313-318
Author(s):  
J. P. Mittal ◽  
P. K. Ghosh
Keyword(s):  
Body Weight ◽  
Reaction Time ◽  
Citric Acid ◽  
Sexual Behaviour ◽  
Semen Quality ◽  
Arid Zone ◽  
Physical Characteristics ◽  
The Other ◽  
Indian Desert ◽  
Arid Conditions

SummaryThe influence of various factors like breed, season, level of nutrition, age and body weight was studied in indigenous (Marwari and Magra) and exotic (Corriedale) rams in respect of semen quality and sexual behaviour under the arid conditions of Jodhpur in the Indian desert. None of these factors except breed and level of nutrition affected semen quality. The breeds differed significantly only in respect of percentage abnormal sperms. The values for all the physical characteristics except sperm concentrations wore slightly lower in the Corriedale. Supplementary concentrate feeding resulted in significantly higher concentrations only of fructose and citric acid in the semen. The physical characteristics of the semen were only slightly superior in the feed-supplemented group of animals. The breeds differed significantly in respect of libido characteristics, with the Corriedale exhibiting the longest reaction time and the lowest number of matings in 30 min. These characteristics were, however, not affected by the other factors mentioned above.

scholarly journals BIODIVERSITY OF HEMIPTERA (HETEROPTERA) OF THE INFRAORDER PENTATOMOMORPHA I OF THE ILE-ALATAU STATE NATIONAL NATURE PARK

REPORTS ◽  
2021 ◽  
Vol 2 (336) ◽  
pp. 105-111
Author(s):  
P. A. Esenbekova ◽  
◽  
A. N. Iskakova ◽  
G. D. Anarbekova
Keyword(s):  
Species Composition ◽  
Field Research ◽  
Trophic Specialization ◽  
Stages Of Development ◽  
Predominant Species ◽  
Number Of Species ◽  
Natural Park ◽  
The Family ◽  
Two Generations ◽  
Nature Park

The article presents the results of field research conducted in 2020 on the territory of the Ile-Alatau State National Natural Park. As a result of the conducted research, 32 species belonging to 2 families of hemiptera of the infraorder Pentatomomorpha I were identified. Among them, the predominant species composition of the family Lygaeidae is 21 species (66%), and 11 species are known from the family Aradidae (34%). On trophic specialization, they are divided into mycetophagy (11 species), phytophages (21 species, of which politicology – 16 types, wide oligotherapy – 3, narrow oligotherapy – 2). According to the type of food, both taking into account the number and number of species in the complex of hemiptera, phytophages clearly predominate. According to the number of generations per year, the hemiptera of the Ile-Alatau SNNP are divided into 4 groups: acyclic (different stages of development can be found simultaneously throughout the year) – 11 species, monovoltine (one generation per year) - 15 species, bivoltine (two generations per year) – 5 species, polyvoltine (several generations per year) - 1 species. There are 30 species with mesophilic ecology in the study area, only 1 species is hygromesophilus. Among the hemiptera of the Ile-Alatau GNPP, 19 species (61%) overwinter in the imago stage, 11 species (35%) in the imago and larvae stage, and 1 species (4%) in the egg stage.

scholarly journals Lower and Middle Paleolithic of Kazakhstan: Morphological, Technological and Typological Aspect of the Study of Bifacial Artefacts on the example of Handaxes from the Aral Sea Region and the Mugalzhar Mountains

2020 ◽  
Vol 32 ◽  
pp. 3-14
Author(s):  
E. A. Osipova ◽  
◽  
O. A. Artyukhova ◽  
T. B. Mamirov ◽  
◽  
...  
Keyword(s):  
Far East ◽  
Great Majority ◽  
Geographic Area ◽  
Aral Sea ◽  
Middle Paleolithic ◽  
Comparison Study ◽  
Middle Phase ◽  
Arid Conditions ◽  
Out Of Africa ◽  
Early Human

Situated at the crossroads of Europe and Asia, actual Kazakhstan represents a strong scientific interest in understanding of the early human migrations “Out-of-Africa” to the Far East. During the whole Pleistocene, the arid conditions of this geographic area hindered the sediment accumulative deposits and the formation of stratified Paleolithic sites. Only studies of lithic industries from the sites with a surface cultural horizon seem possible. These analyses are based on a deflation degree of artefacts and on their technological and typological study followed by a comparison with other lithic collections from stratified and dated sites from surrounding grounds. This paper presents the morphological, technological and typological study of handaxes from the surface sites discovered in the Mugalzhar mountains and in the Aral Sea region. The goal of the study is to reconstitute the operational procedure (chaîne opératoire) in handaxe manufacture with the following comparison study between the handaxe samples. The lithic collection (20 artifacts) is housed at the A. Kh. Margulan Institute of Archaeology (Almaty, Kazakhstan). The analysis of data allows seeing the stark technological difference in the handaxe manufacture from the Mugalzhary mountains and from the Aral Sea region sites. As regards the typological analysis, the great majority of these handaxes from the Mugalzhary sites are characterized by fairly elongated and massive forms. Only on is of discoidal morphology and rather thin in thickness. The other are represented by one amygdaloidal, seven ovate, two lanceolate and two naviform (spear-shaped) handaxes. Any cordiform or triangular handanxes are not determined. Between the handaxes from the Aral Sea region sites, the majority is caracterised by elongated and rather thickened forms. Only one cordiform handaxe from the sample is thin. The elongated handaxes are represented by one amygdaloidal and by three lanceolate objects. It is expected that the handaxes from the Mugalzhary sites belong to more ancient period than the collection from the Aral Sea region sites. The predominance of both lanceolate handaxes and limandes is a typical dance of the Acheulean period, in particular, of its middle phase. The knapping technology used for handaxe manufacturing processes from the Aral Sea region sites and their typology (cordiform handaxes) are representative of the Middle Paleolithic.

scholarly journals LA MALACOFAUNA DE LA ZONA COSTERA DE SANTA MARTA Y PARQUE NACIONAL NATURAL TAYRONA, CARIBE COLOMBIANO

2016 ◽  
Vol 23 ◽  
Author(s):  
Juan Manuel Díaz
Keyword(s):  
Shallow Water ◽  
Coastal Area ◽  
Habitat Types ◽  
Number Of Species ◽  
Natural Park ◽  
Molluscan Species

Based on intesive collectings and published informations an inventory of molluscan species known from the Santa Marta - Tayrona National Natural Park coastal area was performed, including data on substrate and depth preferences of each species. Of a total of 727 species, 485 are gastropods, 214 bivalves, 13 polyplacophorans, 10 scaphopods, and 5 cephalopods. Most species occur in sandy bottoms with seagrass and in rock-rubble zones in shallow water. The high number of species occurring in this region can be explained by the availability of different habitat types and der s in a reduced area and through historic-biogeographic features of this region.

scholarly journals Evaluation of physiological indicators of plants of the genus Populus in arid conditions of Zhezkazgan

2020 ◽  
Vol 100 (4) ◽  
pp. 66-71
Author(s):  
Gulzhanat Maxutbekova ◽  
Keyword(s):  
Climatic Conditions ◽  
Green Spaces ◽  
Populus Alba ◽  
Populus Balsamifera ◽  
White Poplar ◽  
Physiological Indicators ◽  
Arid Conditions ◽  
Industrial Regions ◽  
Resistance Assessment ◽  
Selection Of

The creation of modern green spaces should be based on the selection of a sustainable assortment. Resistance is evaluated on the basis of a number of physiological indicators. Preliminary testing is of particular value for industrial regions with difficult climatic conditions. The purpose of this study was to study the resistance of 4 species of poplars to drought, winter conditions, the effects of diseases and pests, and atmospheric pollution. Resistance assessment was carried out for the species Populus alba, Populus balsamifera, Populus canadensis, Populus nigra, covering the period from 2015 to 2019. The results of visual observations showed that all species of poplars have high winter resistance — 4–5 points. Maximum winter resistance is noted for white poplar, minimum — for canadian poplar. The gas stability of poplars is estimated at 3–5 points. The greatest stability is noted in balsamic poplar, the minimum — in canadian poplar. Drought resistance among poplar species is estimated at 3–4 points. White and canadian poplar showed the least resistance to drought, while canadian poplar showed the maximum. Estimated scores of resistance to diseases and pests were 4–5 points, the highest indicators were noted for balsamic poplar, the minimum — for black poplar. On the basis of the identified indicators, the directions of poplar use in green construction are proposed.

scholarly journals Analysis of flora of the medicinal plants of the Atyrau region

2021 ◽  
Vol 101 (1) ◽  
pp. 67-73
Author(s):  
Meruert Sagyndykova ◽  
◽  
Akzhunis Imanbayeva ◽  
Margarita Ishmuratova ◽  
Gulnara Gassanova ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Raw Materials ◽  
Folk Medicine ◽  
Field Studies ◽  
Life Forms ◽  
Biologically Active ◽  
Ecological Groups ◽  
Number Of Species ◽  
Literary Sources ◽  
Rare And Endangered

Medicinal plants are important sources of biologically active substances and phytopreparations for the prevention and treatment of diseases. In Kazakhstan, the regions of the Western Kazakhstan remain poorly studied in relation to wild medicinal plants. The purpose of the present study was to analyze the species composition of medicinal plants of the flora of the Atyrau region and their ranking by life forms, ecological groups, the degree of distribution and possibility of application in medical practice. Based on the analysis of literary sources and the results of own field studies in the Atyrau region, 177 species of medicinal plants belonging to 118 genera and 46 families are identified. The largest number of species of medicinal plants is noted in Asteraceae, Lamiaceae, Brassicaceae, Rosaceae, Chenopodiaceae, Fabaceae and Polygonaceae families. According to the degree of distribution, 4 groups of plants are identified: i) widespread plants, but growing sporadically, not forming thickets (128 species); ii) rare and endangered plants, not to be harvested for raw materials (11 species); iii) plants, forming small thickets (23 taxa); iv) plants, forming significant thickets suitable for industrial harvesting (15 taxa). Among the medicinal plants of the Atyrau region, 6 ecological groups were identified in relation to humidification conditions: hydrophytes, hygrophytes, mesophytes, mesoxerophytes, xerosesophytes and xerophytes. 8 groups of life forms are defined. The largest number of species is concentrated in the group of perennial herbaceous plants — 105 taxa. 128 taxa are allocated for use in folk medicine, 49 species — in official medicine. 12 pharmaceutical-therapeutic groups of plants for treatment of diseases of various etiologies are identified.

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