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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/11940

Title: AN EMPIRICAL PERSPECTIVE ON ENVIRONMENTAL ANTECEDENTS: PART I ANALYSIS OF THE ENVIRONMENTAL QUALITY OF THREE RIPARIAN COMMUNITIES ASSOCIATED WITH TWO DAMS IN KUMASI, GHANA
Authors: Tetteh, Isaac K.
Awuah, Esi
Frempong, Emmanuel
Issue Date: 2011
Publisher: Nova Science Publishers
Citation: Nova Science Publishers Volume 5, Issue 1
Abstract: The fundamental goal was to apply scientific methods to construct indices to gauge and systematically overhaul the prevailing environmental quality (EQ) of three downstream riparian communities and show how the EQ, in turn, evolved simultaneously with the operational activities (OAs) of two dams over four distinct years in retrospect. Using the correlation method of empirical orthogonal function (EOF) analysis, the environmental quality indices (EQIs) and operational activity indices (OAIs) were constructed from two sets of multivariate geostatistical data. The three leading EOF modes which were statistically separate were retained for further analysis. The expansion coefficients of the low-order EOF modes, fixed in time, were used as indices. The variances (eigenvalues), together with the coefficients (weights) of the eigenvectors, provided useful insights into our understanding of the determinants of the EQ and the OAs, and how they varied over specified time frames. Simultaneous simple linear regression analysis was performed, between the sets of EQIs and OAIs, to measure the response of the communities‟ EQ to the disturbances arising from the operations of the dams. Generally, the results show that the eigenvector coefficients of the communities‟ EQ were either in phase or out of phase, with those of the OAs of the dam(s), which depending on the physical and environmental meaning of the signs (directions) of the eigenvectors, indicated adverse, beneficial, antagonistic, or potentiated, operational impacts on the communities‟ environmental attributes. The statistical analysis revealed moderate to strong relationships between the EQIs and OAIs, signaling profound OAs,associated with the communities‟ EQ. The most important signals were observed in the years when the two dams started operating in tandem.
Description: An article published by Nova Science Publishers
URI: http://hdl.handle.net/123456789/11940
Appears in Collections:College of Science

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