British Journal of Environment and Climate Change最新文献

{"title":"Influence of Environmental Factors on Activities of Bacterial Population Associated With Rhizospheric Soil of Wheat Crop","authors":"Jupinder Kaur, S. K. Gosal","doi":"10.9734/BJECC/2017/35188","DOIUrl":"https://doi.org/10.9734/BJECC/2017/35188","url":null,"abstract":"Aim: To study the effect of environmental factors on the activities of soil microbial population in the rhizospheric soil of wheat crop. Study Design: An agroclimatic study was carried out to study the effect of environmental alterations on the activity of soil bacteria in a multifactor climate change experiment in which wheat crop was grown under field conditions and under temperature gradient tunnel maintained at different and higher temperature. Attempt was made to screen high CO2 and high temperature tolerant diazotrophic bacteria from wheat rhizosphere. Place of Study: Department of Microbiology, PAU, Ludhiana. Methodology: Nitrogen fixing bacteria were isolated on Jensen’s medium using serial dilution spread plate technique. The bacterial isolates were characterized biochemically using standard techniques as described in Bergey’s Manual of Determinative Bacteriology.The isolates were also assessed for their ability to produce indole acetic acid, siderophores production, ammonia excretion, qualitative phosphate solubilization and solubilization of phosphate by quantitative method. Results: A total of 21 different nitrogen fixing bacteria were isolated from rhizospheric soil samples of wheat crop grown under field conditions and under temperature gradient tunnel. Out of 21 isolates, 8 isolates were able to grow upto 20% concentration of CO2 and 7 isolates showed growth upto 60°C. Tolerance to high CO2 and high temperature was observed to more in the bacteria isolated from the rhizospheric soil of wheat crop grown under temperature gradient tunnel. Original Research Article Kaur and Gosal; BJECC, 7(3): 195-204, 2017; Article no.BJECC.2017.015 196 Functional characterization of these isolates showed that the isolate WT5 had significantly higher IAA production (44.3 μg/ml) after 5 days of incubation in the medium supplemented with tryptophan. Among these 21 isolates, six were found to have P-solubilizing diazotrophic trait and five were found to show siderophore production on CAS agar plates. The amount of ammonia excretion was non-significant among the isolates and was in the range of 1.14-3.70 μg/ml. The isolate WF6 was found to be the best isolate in terms of the functional characteristics and tolerance to high CO2 and temperature levels. Conclusion: Results indicate that alterations in environmental factors may cause changes in activities of bacterial populations. These results illustrate the potential for complex community changes in terrestrial ecosystems under climate change scenarios that alter multiple factors simultaneously.","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131810839","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":"Socio-economic and Environmental Impact of German Energy Transition: A Policy Review at Halfway","authors":"Sirri Uyanik","doi":"10.9734/BJECC/2017/31944","DOIUrl":"https://doi.org/10.9734/BJECC/2017/31944","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126816568","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":"Modeling of Areal Coverage of Snow of an Ungauged Catchment with ArcSWAT","authors":"Syeedah Raazia, S. Rasool","doi":"10.9734/BJECC/2017/36139","DOIUrl":"https://doi.org/10.9734/BJECC/2017/36139","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124345622","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":"Seasonally Separated Logistic Models to Assess the Impact of Climate Variables on Occurrence of Rainfall over the Bagmati River Basin of Nepal","authors":"R. Shrestha, S. Shrestha","doi":"10.9734/BJECC/2017/30696","DOIUrl":"https://doi.org/10.9734/BJECC/2017/30696","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125913536","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":"Comparative Vulnerability Assessment of Urban Heat Islands in Two Tropical Cities in Indonesia","authors":"T. Manik, Syarifah Syaukat","doi":"10.9734/BJECC/2017/33529","DOIUrl":"https://doi.org/10.9734/BJECC/2017/33529","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116851505","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":"Assessing the relationship between outbreaks of the African Armyworm and Climatic Factors in the Forest Transition Zone of Ghana","authors":"I. Adama, M. B. Mochiah","doi":"10.9734/BJECC/2017/30588","DOIUrl":"https://doi.org/10.9734/BJECC/2017/30588","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"343 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132305076","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":"Life Cycle Analysis of Green Roof Implemented in a Global South Low-Income Country","authors":"Dominique Morau, N.Rabarison Tsiorimalala, H. T. Rakotondramiarana","doi":"10.9734/BJECC/2017/30796","DOIUrl":"https://doi.org/10.9734/BJECC/2017/30796","url":null,"abstract":"Environmental protection becomes a global challenge currently. Green roof is one of the innovative \u0000concepts to face this battle. An increase in its use is noticed in urban areas worldwide. But a question arises: what are the environmental consequences of the green roofs’ life cycle? In this paper, the environmental performance of two complete systems of lighter and heavier green roofs implemented in a global south low-income country are analyzed and compared in order to determine the potential impacts of both types of green roof systems. For proposing solutions aiming at reducing environmental loads of green roofs, Life-Cycle Assessment (LCA) approach was used in the present study. For this purpose, the approach consists of the following phases: definition of the objective, life cycle inventory, characterization of impacts, and interpretation of results. LCA calculations were done with the help of OpenLCA software. Results show that, non treated materials and / or imported ones are more environmentally impactful. Hence, it is profitable to reduce the use of cement, gravel, virgin plastics, and soil as well as imported materials whose transport is done by plane. In addition, use of natural fertilizer for amending the growth substrate and water from well for watering the green roof, is also recommended.","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125065518","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":"Differential Impacts of Climate on Tree Rings across a Topographic Gradient","authors":"C. Bouma, M. Abrams","doi":"10.9734/BJECC/2017/33378","DOIUrl":"https://doi.org/10.9734/BJECC/2017/33378","url":null,"abstract":"In 2012 and 2013 annual tree rings were measured in two co-occurring, yet contrasting tree species, the mesic red oak (Quercus rubra) and the more xeric chestnut oak (Quercus montana) across a topographic gradient to access differential impacts of climate and disturbance events. The study sites were located on the lower slope, southeast aspect, northwest aspect, and ridge top in the Ridge and Valley province of central Pennsylvania, USA. During the 20 th century, but prior to 1980, growth rates on most sites were statistically similar. After 1980, both species experienced significantly higher basal area increment (BAI) on southeast aspects than northwest sites. Increased growth rate was significantly correlated with increasing tree size. However, this relationship varied across site types and was impacted by disturbances from severe storms in the mid-1950s, 1966, and mid-1990s and gypsy moth outbreaks in the 1980s. Both species exhibited the highest frequency of tree ring releases on southeast aspects. Tree growth was also affected by temperature, precipitation and topographic position. Red oak growth was negatively correlated with current year temperature, particularly on northwest and ridge top sites. Chestnut oak growth responded positively to increasing temperature on southeast and lower slope sites. Moreover, red oak growth on northwest and ridge top locations were negatively correlated with winter temperatures while chestnut oak growth was positively correlated with winter temperatures on lower slope and southeast sites. We conclude that changing climate patterns, including increased temperature, precipitation, and extreme climatic events and site variability affected the growth rates of red oak and chestnut oak. Original Research Article Bouma and Abrams; BJECC, 7(2): 92-112, 2017; Article no.BJECC.2017.008 93","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114885086","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":"Phytodiversity of Herbaceous Vegetation in Disturbed and Undisturbed Forest Ecosystems of Pahalgam Valley, Kashmir Himalaya, India","authors":"S. Shameem, H. Mushtaq, A. Wani, N. Ahmad, A. Hai","doi":"10.9734/BJECC/2017/31696","DOIUrl":"https://doi.org/10.9734/BJECC/2017/31696","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"95 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115758315","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":"Statistical Modeling of the Methane Production from Slaughterhouse Wastes in Anaerobic Co-digestion","authors":"Y. Guardia-Puebla, M. Herrera-Robledo, Yoandro Rodríguez-Ponce, Suyén Rodríguez-Pérez, Manuel Pérez-Cedeño","doi":"10.9734/bjecc/2017/29741","DOIUrl":"https://doi.org/10.9734/bjecc/2017/29741","url":null,"abstract":"","PeriodicalId":373103,"journal":{"name":"British Journal of Environment and Climate Change","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131248535","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}