Journal of Enviromental Sciences and Natural Resources最新文献_第2页

Comparative study between natural, entomophilic and manual pollination in soursop (Annona muricata L.) 番荔枝自然授粉、亲虫授粉和人工授粉的比较研究

Journal of Enviromental Sciences and Natural Resources Pub Date : 2019-06-30 DOI: 10.35429/jesn.2019.15.5.18.22

A. L. Sánchez-Monteón, G. Luna-Esquivel, L. G. Ramírez-Guerrero, Bertha Berenice Rodríguez-Rodríguez

引用次数: 0

Synthesis and characterization of silver nanoparticles using as a reducing agent plant extract of Dandelion (Taraxacun officianale) 以蒲公英提取物为还原剂的纳米银的合成与表征

Journal of Enviromental Sciences and Natural Resources Pub Date : 2019-06-30 DOI: 10.35429/jesn.2019.15.5.11.17

Lidia Meléndez-Balbuena, E. Reyes-Cervantes, B. M. Cabrera-Vivas, Maribel Arroyo

{"title":"Synthesis and characterization of silver nanoparticles using as a reducing agent plant extract of Dandelion (Taraxacun officianale)","authors":"Lidia Meléndez-Balbuena, E. Reyes-Cervantes, B. M. Cabrera-Vivas, Maribel Arroyo","doi":"10.35429/jesn.2019.15.5.11.17","DOIUrl":"https://doi.org/10.35429/jesn.2019.15.5.11.17","url":null,"abstract":"The objective of this work was to synthesize the synthesis of silver nanoparticles using as a reducing agent of ionic silver the plant extract of Dandelion (Taraxacun officianale), vegetable of high availability and low cost, as an alternative to the processes conventional, based on the antioxidant capacity of plant extracts that reduce metals in solution. The nanoparticles prepared by this method were characterized by the golden yellow color characteristic of silver nanoparticle solutions. Measurements with UV-Vis spectroscopy of aqueous solutions of Ag1 + ions after coming into contact with plant extracts of Dandelion at different pHs showed an intense absorption band around 400-450 nm, characteristic of the resonance of the Plasmon of silver nanoparticles. Through the scanning of the samples by means of AFM (atomic force microscopy), morphological information of the nanoparticles is obtained, from 3D topographic images of them, such as distribution, size and shape of the silver nanoparticles. Finally, its antibacterial activity was tested against the Escherichia coli strain.","PeriodicalId":200063,"journal":{"name":"Journal of Enviromental Sciences and Natural Resources","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127283039","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}

引用次数: 0

Evaluation of inhibitor effect on micelium development on Fusarium oxysporum, y F. solani, using three dosis of epazote epazote (Chenopodium ambrosioides L.) 三剂量三氮唑对尖孢镰刀菌胶束发育抑制作用的评价

Journal of Enviromental Sciences and Natural Resources Pub Date : 2019-06-30 DOI: 10.35429/jesn.2019.15.5.23.28

Pedro Eduardo Moreno-Zacarías, Flor Del Carmen Ramos-Dueñas

{"title":"Evaluation of inhibitor effect on micelium development on Fusarium oxysporum, y F. solani, using three dosis of epazote epazote (Chenopodium ambrosioides L.)","authors":"Pedro Eduardo Moreno-Zacarías, Flor Del Carmen Ramos-Dueñas","doi":"10.35429/jesn.2019.15.5.23.28","DOIUrl":"https://doi.org/10.35429/jesn.2019.15.5.23.28","url":null,"abstract":"Using natural extract of epazote (Chenopodium ambrosioides L.), has shown to control phytopatogenic fungi (P. Aguilar et al., 2013; y J. Black Solis et al., 2017). One mililiter of ethanolic extract at concentrations of 25%, 50%, 100% diluted on sterile distilled water (V:V) has been used to inhibit micelial developement of Fusarium oxysporum, and Fusarium solani, added to PDA Petri dish under a completely randomized experimental design, a statistical analysis was carried out by means of an ANOVA and comparison test of means with Tukey´s multiple range. After eight days of incubation, the outstanding inhibit effect has been observed with 100% and the average diameter of colonies was 62 mm., has been measured on both fungi species. In contrast, 62 mm., and 61 mm., was observed on F. oxysporum and F. solani respectively, and a statistical effect was observed (p≤0.05). With 25% and 50%, micelial inhibit developement has been measured, but no statistical differences between concentrations has been calculated (p≥0.05) for both fungi. The results suggest that ethanolic extract of epazote could be used to control both phytopathogenic fungi.","PeriodicalId":200063,"journal":{"name":"Journal of Enviromental Sciences and Natural Resources","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123336963","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}

引用次数: 0

Structure, composition and tree diversity in a temperate forest under management 管理下温带森林的结构、组成和树木多样性

Journal of Enviromental Sciences and Natural Resources Pub Date : 2019-06-30 DOI: 10.35429/jesn.2019.15.5.29.35

Antonio Mora-Santacruz, M. L. Román-Miranda, Omar Nungaray-Villalobos, Gerardo Alberto González-Cueva

{"title":"Structure, composition and tree diversity in a temperate forest under management","authors":"Antonio Mora-Santacruz, M. L. Román-Miranda, Omar Nungaray-Villalobos, Gerardo Alberto González-Cueva","doi":"10.35429/jesn.2019.15.5.29.35","DOIUrl":"https://doi.org/10.35429/jesn.2019.15.5.29.35","url":null,"abstract":"In order to study both diversity indices and structure of forests, which are an essential tool for decision-making in forest management, which show natural successional processes and effects for its management. So the objetive of this study was to evaluate structure and diversity of arboral species in a temperate forest of southern Jalisco state. Five permanent forestry research sites 50 x 50 (2.500 m2) were established, and a census of all tree species was carried out, with normal diameter greater than 7.5 cm. Each individual was measured: height and normal diameter, placing an aluminum plate for identification. We obtained the importance value index (IVI), indices of diversity, richness, and dasometric parameters. There were 17 species, 9 genera and 9 botanical families; the Fagaceae was dominant. Pinus douglasiana presented the highest IVI (57.93%); The Shannon index had a value of 2.0; the index of Margalef was 2.4; the forest has a density of 688 trees ha-1, being the most abundant Styrax ramirezii; Pinus herrerae obtained the highest values in basal area and volume with 30.77 m2 ha-1 and 357,325 m3 ha-1 respectively. The values of diversity are influenced by elements of the cloud forest","PeriodicalId":200063,"journal":{"name":"Journal of Enviromental Sciences and Natural Resources","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114470288","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}

引用次数: 0

Floristic composition in deciduous tropical forest to west of Irapuato, Guanajuato 瓜纳华托州伊拉普托西部热带落叶林的植物区系组成

Journal of Enviromental Sciences and Natural Resources Pub Date : 2019-06-30 DOI: 10.35429/jesn.2019.15.5.36.43

V. Hernández-Hernández, Luis Fernando Ramos-López, Juan G. Colli-Mull

{"title":"Floristic composition in deciduous tropical forest to west of Irapuato, Guanajuato","authors":"V. Hernández-Hernández, Luis Fernando Ramos-López, Juan G. Colli-Mull","doi":"10.35429/jesn.2019.15.5.36.43","DOIUrl":"https://doi.org/10.35429/jesn.2019.15.5.36.43","url":null,"abstract":"The flora of Irapuato has been poorly explored, because it is an area dedicated to agriculture and there are few strains of tropical deciduous forest and subtropical scrubland. The objectives of the study were to know the floristic composition in Cerro del Veinte, compare the richness of species with other locations that have the same type of vegetation and determine the conservation status of the species according to NOM-059 SEMARNAT-2010. The sampling was through free transects of approximately 1 km in the Barrancas La Escondida and El Paiste. A total of 59 families, 137 genera, 171 species and four varieties were obtained. The best represented families are Asteraceae, Fabaceae and Pteridaceae. According to the Chao 2 estimator, the sampling effort in the study area was 87%. Floristic affinity in Cerro del Veinte was greater with the Hoya de Rincón de Parangueo (38%) and Sierra de Pénjamo (32%). In addition, there are three new species reported for Guanajuato, Govenia lagenophora and Sacoila lanceolata (Orchidaceae) and Solanum edmundoi (Solanaceae). The taxa Cedrela odorata and Erythrina coralloides are included in NOM-059-SEMARNAT-2010.","PeriodicalId":200063,"journal":{"name":"Journal of Enviromental Sciences and Natural Resources","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133023576","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}

引用次数: 0

Comparative analysis of average temperature trends in Jalisco, Mexico, based onoriginal and homogenized series to estimate signs of Climate Change 基于原始和均质序列估计气候变化迹象的墨西哥哈利斯科州平均温度趋势的比较分析

Journal of Enviromental Sciences and Natural Resources Pub Date : 2019-06-30 DOI: 10.35429/jesn.2019.15.5.1.10

Valentina Davydova-Belitskaya, Andrea Liliana Godínez-Carvente, René Navarro-Rodríguez, M. Orozco-Medina

{"title":"Comparative analysis of average temperature trends in Jalisco, Mexico, based on\u0000original and homogenized series to estimate signs of Climate Change","authors":"Valentina Davydova-Belitskaya, Andrea Liliana Godínez-Carvente, René Navarro-Rodríguez, M. Orozco-Medina","doi":"10.35429/jesn.2019.15.5.1.10","DOIUrl":"https://doi.org/10.35429/jesn.2019.15.5.1.10","url":null,"abstract":"In recent decades, great attempts have been made to create high-quality climatic data sets and spatial resolution on a continental and national scale, as well as the analysis of their variability and change in daily extremes. However, in Mexico there is still no high-resolution database at a national level that complies with quality control, including the review of homogeneity of long series. This paper shows the results of variability analysis and the detection of climate change signs in the state of Jalisco, performed in a high-resolution database developed for the maximum, minimum and average temperature according to the quality control procedures of climatic records. From these two sets, the spatial behavior of annual average temperature estimated for three climatic periods was analyzed. Among the results obtained with stations which have complied with quality control, the presence of annual average temperature increases at 0.31°C in 1971-2000, 0.61°C in 1981-2010 and a very intense increase, 0.81°C for the period 1991-2010. Likewise, it was observed that the Jalisco coasts show an increase of 0.2 to 0.4°C, while the continental region registers an increase up to 0.8°C.","PeriodicalId":200063,"journal":{"name":"Journal of Enviromental Sciences and Natural Resources","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122884993","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}

引用次数: 0