Current Trends in Natural Sciences最新文献

{"title":"STUDY OF PLANT DIVERSITY IN THE RANGELANDS OF STIPA TENACISSIMA L.: CASE OF SFISSIFA AND EL BIODH REGION (SOUTH WEST ALGERIA)","authors":"Lakhdar Guerine, Kouider Hadjadj, H. Mouissa, Naziha Benamara, Naimai Bendouina","doi":"10.47068/ctns.2022.v11i21.021","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.021","url":null,"abstract":"The floristic diversity analysis made it possible to distinguish 42 species listed in 30 genera and 17 families in the Sfissifa station and 34 species classified in 23 genera and 15 botanical families in the El Biodh station. The most representative families in the Sifissifa station are: Asteraceae (14,28 %), Amaranthaceae (11,90 %), Brassicaceae (11,90 %), Poaceae (7,14 %), Lamiaceae (7,14 %) and Cistaceae (7,14 %). The dominant families in El Biodh station are Asteraceae (17,64 %), Poaceae (11,74 %), Amaranthaceae (8,82 %), Brassicaceae (8,82 %), Lamiaceae (8,82 %) and Cistaceae (8,82 %). The other remaining families have only one or two species with estimated rates ranging from 2,38 % to 4,76% in Sfissifa and 2,94 % to 5,88 % in El Biodh. The study of biological types shows the abundance of therophytes in the two stations with 42.86 % at Sfissifa and 50 % at El Biodh, which reflects the importance of the anthropologic action and the xericity of the climate. The analysis of the biogeographical spectrum shows the dominance of native species of the Mediterranean (19 species in Sfissifa and 15 species in El Biodh). The AHC analysis of the data revealed the main factors controlling the distribution of plant formations in the two studied stations including overgrazing, salinity and desertification. The combination of prolonged droughts and anthropogenic pressures exerted on the studied areas results in the extension of species of low pastoral value and the appearance of vast expanses of bare soil reaching the stage of desertification.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127379750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"USE OF ACTIVE MICROORGANISM IN IMPROVING POND WATER QUALITY: CASE STUDY OF BEYTEPE POND","authors":"Fatma Ozkay, I. Tas, Hakan Ozkandan, A. Gunal, Tuğba Yeter, Ceren Gorgisen, Betul Iba Cakir, Bekir Kutlu, M. Inan, Ece Ates","doi":"10.47068/ctns.2022.v11i21.044","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.044","url":null,"abstract":"Water resources have been seriously polluted in terms of quality in the last hundred years, especially due to anthropogenic effects. The quality of the water in the storage structures (dam, lake, pond, etc.) has started to deteriorate due to the deterioration in the drainage basin, especially the insufficient feeding. In recent years, researches on the protection and improvement of the quality of water in storage structures have begun to increase. In this study, it was aimed to improve the water quality of Beytepe Pond located in the campus of the Turkish National Botanic Garden Directorate (TNBG) by using Active Microorganism (EM) in laboratory conditions. In the study, Baykal EM1, active microorganism, was used. For improvement water quality was used aerobic (A) and anaerobic (AN) systems in containers with a volume of 10 liters. EM was administered in 3 doses as 5, 10 and 20 ml L-1. pH, conductivity (EC), Dissolved Oxygen (DO), Chemical Oxygen Demand (COD) and chlorophyll-a values were measured in the pond water. Beytepe Pond water is 3rd class according to the US salinity laboratory salinity classification (USSL). COD and chlorophyll-a values exceed eutrophication limit values. At the beginning of the study, the raw water COD value was measured as 263 mg L-1. It was determined that 5 ml L-1 EM application was reduced up to 2 mg L-1 in anaerobic system application. The same application provided the best improvement in chlorophyll-a values. As a result of the study, it was observed that the EM application provided an improvement in the quality of the Beytepe Pond water.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"494 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116695363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AGRICULTURE AND ENVIRONMENT INTERACTION","authors":"S. Bulut, Z. Gökalp","doi":"10.47068/ctns.2022.v11i21.041","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.041","url":null,"abstract":"The resources necessary for food production have shown a disquieting deterioration during the last three decades. Modern intensive agriculture has an adverse effect not only on the physical environment but also on human health. On the other hand, 'Sustainable Agricultural Systems', which has gained importance in recent years, deals with both the protection of natural resources and the increase in plant production. In these systems, production is ensured by directing the resources obtained from the system cycle, not the chemicals and inputs that harm human, plant and environmental health, and quality healthy products are obtained. In 'Organic Farming', which is one of the sustainable agricultural systems, it is aimed to cause the least damage to the environment by producing healthy foods without disturbing the natural balance. The risk of pollution is less because less economic input is used in these and similar protected sustainable agricultural systems. While the inputs used in agricultural production stage increase the productivity of the product produced per unit area and make it more resistant to diseases and pests, they can have negative effects on the living things in the immediate vicinity and the ecosystem. While the development of agriculture in a region positively affects the natural life, oxygen production and climate in the region, inorganic nitrate pollution, pesticide pollution and salinity problems can be listed as the negative effects of agriculture on the environment, especially in regions where intensive agriculture is practiced. Also, agricultural water use, application of fertilizers and pesticides may negatively affect the water courses, deforestation, and crop and animal raising may result in greenhouse gas emissions, unsuitable agricultural practices may have detrimental impacts on soil, genetic resources and biodiversity. In order to ensure sustainability in agriculture, by abandoning the agricultural production methods based on excessive chemical pesticides and fertilizers that the producers have applied until now; an economical fertilization, preserving the organic matter ratio of the soil by preventing stubble fires, reduced tillage, combating diseases, pests and weeds in integration with a suitable crop rotation are of great importance.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116225054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ROMANIAN KIWIFRUIT BREEDING PROGRAM - PRELIMINARY STUDY OF FIFTEEN MALE HYBRIDS FOR SELECTION AS POLLINATORS","authors":"L. Iliescu, V. Popa, N. Meena, F. Stănică","doi":"10.47068/ctns.2022.v11i21.031","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.031","url":null,"abstract":"Kiwi is a new fruit that can be grown in Romania. A common Italian-Romanian kiwifruit breeding program was initiated in 1993. For pollinator (male) kiwi plants, breeding programs involve the selection of elite plants with long flowering period and high pollen germination rate. The aim of this study was to evaluate the pollen grains from fifteen Romanian kiwifruit hybrids for identifying the most suitable pollinators for kiwi female selections released from our breeding program. The fresh pollen grains were collected during pollination period (2018-2020), in Petri dishes, maintained at room temperature for 12 hours, and then placed in 15% sucrose solution for germination. At different time interval: 4, 8, 12 and respectively, 24 hours, several measurements were done. Four genotypes – R0P3, R0P6, R2P8 and R3P9, which recorded over 90% germinability after 24 hours, have been selected for further field tests, including artificial pollination and compatibility tests with the kiwi female selections.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115195848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ROMANIA'S NATIONAL AND NATURAL PARKS AND THEIR ECOLOGICAL AND ECOTURISTIC IMPORTANCE","authors":"Roxana Mitrici (Militaru)","doi":"10.47068/ctns.2022.v11i21.024","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.024","url":null,"abstract":"Ecotourism is essential to protect and preserve the natural and cultural heritage, to develop local communities socially and economically and to increase the environmental education. To conserve the biological diversity, Romania has established many protected natural areas (over 7% of the country's area or about 18% if Natura 2000 sites considered). Romania has 32 protected natural areas of national interest: the Danube Delta Biosphere Reserve, 13 national parks and 18 natural parks. Besides these major protected areas, there are 941 scientific reserves, nature monuments and nature reserves nationwide, exceeding 300,000 hectares. Although Romania has a significant ecotourism heritage with great potential for valuation and an adequate legislative framework, ecotourism is still a fairly narrow segment of tourism market, facing many problems, such as: poor local cooperation, modest national and international promotion, limited supply, poor diversification, poor development of ecotourism infrastructure in protected areas, labor migration, low level of training of those employed in the field. Using a proper management and infrastructure, these protected areas could receive more visitors, which would increase tourism revenue and improve the current precarious situation of financing protected areas.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115226764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESULTS CONCERNING OBTAINING OF LETTUCE ON PERLITE SUBSTRATE","authors":"M. Stoian, M. Doltu, E. Draghici","doi":"10.47068/ctns.2022.v11i21.015","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.015","url":null,"abstract":"Some results regarding the obtaining of lettuce (Lactuca sativa) on perlite substrate are in this study. Lettuce is a popular vegetable in Romania. Among the aims of lettuce culture are yield and quality. Lettuce culture results depend on the quality of the seedlings. The experience of this paper aimed at identifying of a technological sequence for obtaining of lettuce in unconventional system, on perlite substrate. The research has been carried out in the Hortinvest greenhouses, within the Research Center for the Quality of Horticultural Products at the University of Agronomic Sciences and Veterinary Medicine of Bucharest, in (October–November) 2016 and (March–April) 2017 years, on a variety of lettuce („Alanis” from the Seminis company). Perlite (2 mm and 4 mm) has been the unconventional substrate used in the lettuce production. Fertilization has been done in several variants: chemical and with different products (Formulex, Iguana and Vermiplant). The lettuce seedling variant obtained on perlite with a 4 mm grain size and treated with Vermiplant has had the best average result (3.65 leaves). The variant of lettuce grown on a 4 mm granulated perlite mattress and treated with Vermiplant has had the best result after 25 days from planting (22.55 leaves). The unconventional soilless lettuce culture system, on perlite substrate, has optimal results and it is also recommended in Romania.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124685974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"POTENTIAL USE OF BIOCHAR IN WASTEWATER TREATMENT OPERATIONS AND SOIL IMPROVEMENT","authors":"Zeki Gokalp, S. Bulut","doi":"10.47068/ctns.2022.v11i21.019","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.019","url":null,"abstract":"Biochar is produced through thermochemical decomposition, so called as pyrolysis, of different biomass groups in the presence of little or no oxygen. Resultant material is highly stable material with excellent surface characteristics and pore structure and is also rich in functional groups. Such properties of the material are largely influenced by pre- and post-treatments and thermal decomposition conditions. Various methods have been used for thermal decomposition of biomass, such as pyrolysis thermal carbonization, torrefaction and microwave heating at different temperatures and for different durations. Biochar has recently started to be used for wastewater treatment and water pollution control purposes. It is also used to improve soil properties including aggregate stability, water holding capacity and organic matter content. It is a new, economic and environment friendly material to be used in wastewater treatments technology and soil improvement. In this study, biochar production technologies and properties of resultant materials were summarized and potential use of biochar in wastewater treatments operations and for soil improvement were assessed in detail.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121486380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESEARCHES ABOUT THE LEAF BEETLES (CHRYSOMELIDAE, COLEOPTERA) OF TULCA AREA (BIHOR COUNTY, ROMANIA)","authors":"A. L. Ilie, M. Marinescu, L. C. Ilie","doi":"10.47068/ctns.2022.v11i21.029","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.029","url":null,"abstract":"In this work are presented data about the fauna of leaf beetles (Chrysomelidae, Coleoptera) from Tulca area, Bihor county during the period 2009 – 2021. There were recorded 69 species belonging to 8 subfamilies, 35 genera, and 10 chromatic varieties. The identified species are relatively common in the Romanian fauna, representing 12.02 % of the total species from Romania. Some species, through the attacked host plants, can be harmful to agriculture and forestry: Crioceris duodecimpunctata L., Leptinotarsa decemlineata Say, Chrysomela populi L., Chrysomela vigintipunctata Scop., Plagiodera versicolora Laich., Gonioctena fornicata Bruggm., Phratora vitellinae L., Diabrotica virgifera Le Conte, the species belonging to Phyllotretta genus, Crepidodera aurata Marsh., Crepidodera aurea Geoffr. The multitude of the number of species on a relatively small territory in terms of surface shows the great variety of plant species with which they feed but also the fact that the area is unpollued, being an argument for protecting nature in the future of this area.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133852668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NEW THERMOPHILIC THERMOBIFIDA STRAIN KB-T3 FROM ALGERIAN SAHARAN SOIL: ISOLATION AND POLYPHASIC TAXONOMY","authors":"N. Benoussaid, Dalila Boubetra, Affaf Laassami, Khaoula Bouznada, M. Holtz, N. Bouras, A. Meklat","doi":"10.47068/ctns.2022.v11i21.037","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.037","url":null,"abstract":"During a screening for the diversity of actinobacterial strains from Saharan soil samples collected from Béchar region (Algeria), one strain designated KB-T3 was isolated by dilution technique on chitin-vitamins agar medium. The taxonomic position of this strain was determined by using a polyphasic approach. Morphological and chemical characteristics of the KB-T3 strain were consistent with those of the genus Thermobifida. The KB-T3 strain had a white aerial mycelium with dictomically branched sporophores carrying coccoid secluded spores. The substrate mycelium was pale yellow, sterile, and non-fragmented. The strain is characterized by the presence of meso-diaminopimelic acid in the cell wall, the galactose in whole-cell, and phosphatidylethanolamine in the cell membrane. The unique characteristic of this strain was its abundant growth with the absence of NaCl and in temperature‎ ranging from 40 to 65 °C, its capacity to decompose acetate, and its ability to use fructose, glucose and xylose as sole carbon source. Phylogenetic analysis based on 16S rRNA gene sequence revealed that the strain KB-T3 should be classified in the genus Thermobifida and exhibited 99.79 % gene sequence similarity to Thermobifida fusca NBRC 14071T.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133644160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"BIOLOGICAL RISKS OF WASTE WATER FOR IRRIGATION","authors":"Fatma Ozkay, I. Tas, Hakan Ozkandan, A. Gunal","doi":"10.47068/ctns.2022.v11i21.006","DOIUrl":"https://doi.org/10.47068/ctns.2022.v11i21.006","url":null,"abstract":"Increasing activities in the World, enhance the pressure on freshwater resources. The most important solution to reduce this pressure is the use of treated wastewater. The use of wastewater is becoming increasingly common on a global scale. Wastewater used irrigation, especially in agriculture and landscape areas. It can use some industrial activities such as cooling, washing, boiler feeding and fire extinguishing. Wastewater is generally used directly or by creating a wetland after physical pre-treatment. Changes in living standards have diversified wastewater contents. In recent years, domestic wastewater contains substances, which are extremely harmful to living health, that cannot be treated with physical processes, and require expensive and complex treatment techniques. Heavy metals, microorganisms and endocrine disruptors in wastewater pose serious health risks to life. In this study, biological risks in the use of wastewater in irrigation will be evaluated. In the study, the biological risks that the pathogenic microorganisms and endocrine disruptors contained in the wastewater may cause in irrigated areas and suggestions for their solution are given.","PeriodicalId":254664,"journal":{"name":"Current Trends in Natural Sciences","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133334934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}