The estimation of regression models for the phytoplankton growth
2001
Kayaalp, T. (Cukurova Univ. (Turkey). Faculty of Agriculture) | Isik, O.
The regression equations were estimated to determine the cell number and chlorophyll-a content. First, the growth curves were formed and then the regression equations were estimated for T. chuii and C. vulgaris. T. chuii was cultured at different temperatures and both T. chuii and C. vulgaris were cultured at different illumination levels. At the end of the study, coefficients of determination (R2) were found high and the parameters b and c were significant (p less than 0.01) by the estimation equations. The regression models which were formed for T. chuii cultures at the temperatures 20, 24 and 27 degree centigrade are In Y = 12 + 1.25 In (n) - 0.0051 (n), In Y = 11.9 + 0.817 In (n) - 0.0408 (n), In Y = 11.5 + 1.36 In (n) - 0.0323 (n), respectively. The estimation equations for T. chuii and C. vulgaris cultures at the 17 and 77 micro- Em-2s-1 light densities are In Y = -0.724 + 0.106 In (n) - 0.0334 (n) and In Y = -0.460 + 0.867 In (n) + 0.220 (n).
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