Appropriate Construction Technologies to Control the Effects of Wet Conditions in Wetlands in Building Industry in Kumasi Metropolis (Published)
There is increasing pressure on all-natural resources including wetlands which numerous building and construction activities, such as religious structures, residential facilities and service stations are being constructed without due consideration to effects of wet conditions and the buffer range at which physical development must be restrained. This study explores the appropriate construction technologies to control the effects of wet conditions on buildings in wetlands in Kumasi Metropolis. The study adopted a cross-sectional survey design with a mixed method approach. 120 respondents were randomly selected from a population of 450 developers for the study. The research used questionnaire to collect data. SPSS were used to analyse the data collected. The study reveals that wet conditions contributed to eight (8) defects to buildings and nine (9) appropriate technologies that could be used to control effect of wet conditions. Also, it was found that developers used all the nine technologies. Finally, the results show an increasing trend of the use of proper technologies in recent times. The study strongly recommends that city authority should strengthen the departments/agencies that take charge of supervision on building construction activities with appropriate logistics to enable them discharge their duties effectively.
Investigation into the Acquisition and Development of Wetlands in Built Environment Industry: A Case Study in Kumasi Metropolis (Published)
Wetlands are the most important ecosystem of the earth the depletion of ecosystems turn to weaken their ability to provide essential services. This study investigates into the trend acquisition and development of wetland in Kumasi metropolis. The study adopted a cross-sectional survey design with a mixed method approach. 120 respondents from 10 wetland sites were randomly selected from a population of 450 developers for the study. The research used questionnaire to collect data. SPSS and Smart PLS were used to analyse the data collected. The study reveals that, the state of wetlands before they were taken over by construction activities were the presence of natural vegetation, plant and animal species. The study established that the major reason for the development of wetlands is it closeness to social amenities and the main allocator of wetlands are chiefs. Moreover, there is an increasing trend in the acquisition and development of wetlands in Kumasi. Finally the study reveals that the major factor influencing wetland acquisition and development in Kumasi were prime location of wetlands. It is recommends that there should be effectual collaboration between city authorities and traditional land owners in implementing the planned layout of the city.
ECOLOGY, DISTRIBUTION AND DIVERSITY OF PHYTOPLANKTON IN TEETHA WETLAND, TUMAKURU DISTRICT, KARNATAKA, INDIA (Published)
In the present experiment, phytoplankton belonging to 41 species under 23 genera was observed from Teetha wetland ecosystem during the period of investigation from June 2011 to May 2013. Results revealed that, Bacillariophyceae was found to be the dominant group of phytoplankton (39.13 %) followed by Chlorococcales and Cyanophyceae each with (21.74 %), desmids (13.04 %) and Euglenoids (4.35 %). Teetha Lake is found to be rich in phytoplankton diversity and hence productive. Summer period marked an increase in phytoplankton density. Physicochemical factors like Temperature, pH, Sulphate, Potassium, Nitrate nitrogen, Ammonical nitrogen and Silica were found to be the important factors influencing the growth of phytoplankton and they exhibited significant positive correlation with total phytoplankton. Based on Nygaard’s trophic state indices the wetland is said to be oligotrophic. Inter-relationship of various physicochemical factors and their role with seasonal dynamics of phytoplankton is here by discussed.