Problem statement: Jordan is experiencing harsh water shortage in different parts of the country due to high fluctuations in annual precipitation; the only source of water. In addition, heat waves are becoming more frequent in the region. Precipitation decrement and summer heat waves are being blamed on global warming. This study aimed to detect trends in weather parameters in Jordan. Approach: Data from six meteorological stations distributed around Jordan were analyzed using several parametric and nonparametric statistical approaches including Mann-Kendall, Linear Regression, Cusum, Rank Sum, Student's t-test, Rank Difference, Auto Correlation and Skewness-Kurtosis Normality test. Results: The results indicated that there are no visible trends indicating an increase or decrease in the annual precipitation and maximum temperature. However, there are good to strong trends indicating that annual minimum temperature has increased in the last decade while annual temperature range has decreased. Conclusion: Decreasing temperature range proved that the Earths atmosphere is becoming more efficient in trapping terrestrial infrared radiation, which is accountable for the global warming
Problem statement:In the megacity Kolkata, the need for space to accomodate the ever increasing population is increasing day by day. As a result the encoarchment of the large wetland on the eastern frindge of the city is increasing and so is the threat of its loosing the status of Ramsar Status. Approach: Proper documentation of the existing traditional practice with sound scientific basis and the direct as well as indirect benefit that the city receives as a result of its existance could be an approach towards its conservation. Results: East Kolkata Wetland (EKW) is a unique example of a wetland ecosystem involved in both resource recovery and environmental protection and in the process providing a stable urban fringe to an expanding metropolis. It ensures economic benefit and employment generation because of resource recovery activities based on utilization of the city's sewage. It acts as a sink for city sewage and garbage, even at times a little flow of industrial effluents with toxic heavy metals as well as hazardous contaminants like sulphate and nitrate to name a few. The purification process operating there depends to a large extent on the activity of the diverse microbial population using liberal sunshine. On trying to understand the microbial flora, a rich diversity of the bacterial domain was revealed with immense potential for commercial application. The extracellular enzymes from microbial origin of EKW were used for detergent formulation, dehairing of hide at neutral pH, silver recovery from exposed X-ray films and so on. The microbes themselves could entrap metals inside them as nanoparticles, remove sulphate from solution and prevent nitrate mediated eutrophication. The soluble waste from the megacity goes through various rounds of purification in the waste water fisheries, called Bheri in local parlance before being used for agriculture. This in turn results in fish production and purification of the waste water up to 99% in terms of faecal coliform count and to a large extent for other parameters. The metal content in the muscles of the surface feeder and bottom feeder fishes were comparable to that of the same variety from rain water fed ponds, indicating safe use of the waste water. The agriculture using waste water mostly produces paddy and vegetables. The green leafy vegetables produced from EKW when compared with same variety from non-EKW were found to be healthy without any additional unwanted metal accumulation. The entire resource recovery process was relatively safe, ecofriendly as well as economical. Conclusion/Recommendations: Thus EKW purifies the waste of a large part of the city, generates edible resources, provides employment, houses diverse flora and fauna and also harbours a rich repertoire of microbes with immense potential for application. The objective of the present review is to emphasize the need of its conservation and also intensify the research on the microbial diversity in these wetlands.
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