Open Ecology Journal最新文献_第2页

TOXICITY OF COMMONLY USED CHEMICAL INSECTICIDES ON MANGO HOPPER 常用化学杀虫剂对芒果斗的毒性研究

Open Ecology Journal Pub Date : 2023-06-01 DOI: 10.59619/ej.5.1.1

M. Amin, Tanjil Rahman, M. Afroz, Md. Abdul Mannan

{"title":"TOXICITY OF COMMONLY USED CHEMICAL INSECTICIDES ON MANGO HOPPER","authors":"M. Amin, Tanjil Rahman, M. Afroz, Md. Abdul Mannan","doi":"10.59619/ej.5.1.1","DOIUrl":"https://doi.org/10.59619/ej.5.1.1","url":null,"abstract":"Mango production in Bangladesh is enormously affected by the infestation of hopper which punctures and sucks sap from tender shoots, inflorescences, and leaves of mango tree, causing non-setting of fruits and dropping of immature fruits. Control of mango hopper in recent days is solely done by synthetic insecticides. This study was conducted in the laboratory during January to October 2022 to know the toxicity of four commonly used insecticides, namely Desis 2.5 EC (Deltamethrin), Ripcord 10 EC (Cypermethrin), Relothrin 10 EC (Cypermethrin), and Sumithion 50 EC (Fenitrothion) on mango hopper. The doses of Desis 2.5 EC, Ripcord 10 EC and Relothrin 10 EC were prepared as 1200, 1000, 750, 500 and 100 ppm, and Sumithion 50 EC solutions were 2500, 2200, 1500, 1000 and 500 ppm. Results showed that the tested insecticides with their recommended doses revealed 51.4±2.5 to 70.6±1.8% mortality of hopper at 4 hours after treatment where Desis 2.5 EC showed the highest mean mortality of the insect. Desis 2.5 EC also showed the lowest LC50 and LC95 values (426.0 and 4331.4 ppm, respectively at 4 hours after treatment) signifying its higher effectiveness compared to other tested insecticides.","PeriodicalId":39335,"journal":{"name":"Open Ecology Journal","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87984049","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

Feasibility of Relative Strain Index (RSI) for the Assessment of Heat Stress in Outdoor Environments: Case Study in Three Different Climates of Iran 相对应变指数(RSI)评价室外环境热应力的可行性——以伊朗三种不同气候条件为例

Open Ecology Journal Pub Date : 2020-06-05 DOI: 10.2174/1874213002013010011

M. Asghari, G. F. Ghalhari, Marzieh Abbasinia, Fahimeh Shakeri, Reza Tajik, M. Ghannadzadeh

引用次数: 9

Exploration of Ecological Footprint in the Kingdom of Saudi Arabian Developed Waterfronts: The Case of King Abdullah Seafront Park (KASP) – Dammam 沙特阿拉伯发达海滨王国生态足迹探索:以阿卜杜拉国王海滨公园(KASP)为例-达曼

Open Ecology Journal Pub Date : 2018-11-09 DOI: 10.2174/1874213001811010075

A. Al-Sulbi

{"title":"Exploration of Ecological Footprint in the Kingdom of Saudi Arabian Developed Waterfronts: The Case of King Abdullah Seafront Park (KASP) – Dammam","authors":"A. Al-Sulbi","doi":"10.2174/1874213001811010075","DOIUrl":"https://doi.org/10.2174/1874213001811010075","url":null,"abstract":"Sustainable development identifies the requirements for the environmental enhancements while preserving a balance among environmental factors. Sustainable integrated systems reinforced or promoted the persistence of the structural and operational components into the natural component.The study aims to apply a modified ecological footprint model to assess how much the ecosystem functions were affected by the development of urban waterfronts in the Kingdom of Saudi Arabia.A modified ecological footprint model has been applied to assess the outcomes obtained from the ecosystem functions of urban waterfronts.The study revealed alteration or embedment of natural processes in all developed urban waterfronts; leading to loss of biodiversity, diminishment of site productivity, and increase of hidden costs regarding maintenance and replacement. It has positive performance in biodiversity enrichment, continuous productivity, maintenance and enhancement of natural physical and biological processes.The sustainable designs for urban waterfronts should aiming for the enhancement of natural processes for the productivity of coastal areas.","PeriodicalId":39335,"journal":{"name":"Open Ecology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42275147","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

Livelihood Vulnerability Associated with Forest Fire in Pauri-Garhwal, Western Himalaya 西喜马拉雅保里加瓦尔地区与森林火灾相关的生计脆弱性

Open Ecology Journal Pub Date : 2018-08-31 DOI: 10.2174/1874213001811010062

S. Jha, Purna Jana, A. Negi, R. S. Negi

{"title":"Livelihood Vulnerability Associated with Forest Fire in Pauri-Garhwal, Western Himalaya","authors":"S. Jha, Purna Jana, A. Negi, R. S. Negi","doi":"10.2174/1874213001811010062","DOIUrl":"https://doi.org/10.2174/1874213001811010062","url":null,"abstract":"\u0000 \u0000 The livelihood of mountainous communities of Himalayan region closely knotted with forest related activities. However, forest degradation especially forest fire significantly affects the mountainous livelihood and hence, there is an urgent need to describe, evaluate and understand specificity of mountainous areas to forest fire.\u0000 \u0000 \u0000 \u0000 In this view, a study on livelihood vulnerability with forest fire of High Altitude Zone (HAZ) and Low Altitude Zone (LAZ) was assessed with Livelihood Vulnerability Index (LVI). It uses 35 indicators, reduced to six components to create an overall index. Each component is composed of set of indicators and they are function of observable variables. The framework uses primary data and employs maximum-minimum normalization to restrict the value range of indicators between 0 to 1.\u0000 \u0000 \u0000 \u0000 The value near to 0 shows lower vulnerability. The overall vulnerability of HAZ region is higher, that might be attributed to higher dependency on forest; live in proximity of forest; unstable socioeconomic condition; less infrastructural development and higher exposure to climatic extreme events.\u0000 \u0000 \u0000 \u0000 Therefore, the adaptive capacity of HAZ should be strengthened in a cross cutting manner for reducing livelihood vulnerability to forest fire. The sectors specific developmental policies/programmes should also be rationalized through bottom up adaptation planning with special reference to forest fire vulnerability.\u0000","PeriodicalId":39335,"journal":{"name":"Open Ecology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43057488","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: 5

Natural and Anthropogenic Impacts on Forest Structure: A Case Study of Uttarakhand State 自然和人为对森林结构的影响:以北阿坎德邦为例

Open Ecology Journal Pub Date : 2018-08-13 DOI: 10.2174/1874213001811010038

J. S. Chauhan, A. Gautam, R. Negi

引用次数: 10

Greenhouse Gas Emission, Rainfall and Crop Production Over North-Western India 印度西北部的温室气体排放、降雨和作物生产

Open Ecology Journal Pub Date : 2018-08-13 DOI: 10.2174/1874213001811010047

Vinay Kumar, S. Jana, A. Bhardwaj, R. Deepa, S. Sahu, Priyadarshee Pradhan, S. Sirdaş

{"title":"Greenhouse Gas Emission, Rainfall and Crop Production Over North-Western India","authors":"Vinay Kumar, S. Jana, A. Bhardwaj, R. Deepa, S. Sahu, Priyadarshee Pradhan, S. Sirdaş","doi":"10.2174/1874213001811010047","DOIUrl":"https://doi.org/10.2174/1874213001811010047","url":null,"abstract":"\u0000 \u0000 This study is based on datasets acquired from multi sources e.g. rain-gauges, satellite, reanalysis and coupled model for the region of Northwestern India. The influence of rainfall on crop production is obvious and direct. With the climate change and global warming, greenhouse gases are also showing an adverse impact on crop production. Greenhouse gases (e.g. CO2, NO2 and CH4) have shown an increasing trend over Northwestern Indian region. In recent years, rainfall has also shown an increasing trend over Northwestern India, while the production of rice and maize are reducing over the region. From eight selected sites, over Northwestern India, where rice and maize productions have reduced by 40%, with an increase in CO2, NO2 and CH4 gas emission by 5% from 1998 to 2011.\u0000 \u0000 \u0000 \u0000 The correlation from one year to another between rainfall, gas emission and crop production was not very robust throughout the study period, but seemed to be stronger for some years than others.\u0000 \u0000 \u0000 \u0000 Such trends and crop yield are attributed to rainfall, greenhouse gas emissions and to the climate variability.\u0000","PeriodicalId":39335,"journal":{"name":"Open Ecology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45273972","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: 4

Preliminary Analysis of the Influence of Reinforced Mortar Coating on the Compressive Strength of Clay Bricks 粘结砂浆涂层对粘土砖抗压强度影响的初步分析

Open Ecology Journal Pub Date : 2018-04-12 DOI: 10.2174/1874149501812010071

A. Azevedo, J. Delgado, A. S. Guimarães, Fernando A. N. Silva, R. A. Oliveira

引用次数: 1

Reliability analysis based on Artificial Bee Colony (ABC) and its application in geotechnical engineering 基于人工蜂群的可靠度分析及其在岩土工程中的应用

Open Ecology Journal Pub Date : 2018-04-10 DOI: 10.2174/1874149501812010096

Hongbo Zhao, Changxing Zhu, Z. Ru

引用次数: 4

Skin Spotting Variation Associated with Biometric and Reproductive Parameters in Naturalized Populations of Rainbow Trout, Oncorhynchus mykiss, from Southern Chile 智利南部归化虹鳟鱼种群的皮肤斑点变异与生物特征和生殖参数相关

Open Ecology Journal Pub Date : 2018-03-09 DOI: 10.2174/1874213001811010025

N. Colihueque, F. Estay, Miguel Yáñez