Skip to main content
. Author manuscript; available in PMC: 2018 Aug 2.
Published in final edited form as: J Water Resour Prot. 2017 Oct 31;9(11):1–29. doi: 10.4236/jwarp.2017.911083

Table 5.

Correlations among the biomasses of phytoplankton, cyanobacteria and Microcystis, nutrients and microcystin measured using ELISA in Harsha Lake.

R2 rawElisa rawMC TN TP TNO2 TNH4 TNO3 Phytoplankton Microcystis Cyanobacteria
rawELISA 1 0.49215 0.0899 0.10457 0.0786 −0.0407 0.00562 0.59043 0.64101 0.66135
<0.0001 0.1057 0.0613 0.1574 0.4651 0.9196 <0.0001 <0.0001 <0.0001
331 331 325 321 325 325 325 124 124 124
rawMC 0.49215 1 0.00192 0.05171 −0.0811 0.05195 −0.114 0.32615 0.40439 0.45738
<0.0001 0.9706 0.3279 0.1196 0.319 0.0283 <0.0001 <0.0001 <0.0001
331 392 370 360 370 370 370 166 166 166
TN 0.0899 0.00192 1 0.38248 0.46201 0.60163 0.53643 0.46474 0.3707 0.40047
0.1057 0.9706 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001
325 370 370 360 370 370 370 148 148 148
TP 0.10457 0.05171 0.38248 1 0.54635 −0.0121 0.69984 0.23572 0.11115 0.04217
0.0613 0.3279 <0.0001 <0.0001 0.8191 <0.0001 0.0051 0.1911 0.6208
321 360 360 360 360 360 360 140 140 140
TNO2 0.0786 −0.0811 0.46201 0.54635 1 0.16334 0.87089 0.29475 0.22141 0.17558
0.1574 0.1196 <0.0001 <0.0001 0.0016 <0.0001 0.0003 0.0068 0.0328
325 370 370 360 370 370 370 148 148 148
TNH4 −0.0407 0.05195 0.60163 −0.0121 0.16334 1 0.17076 0.33432 0.1891 0.2174
0.4651 0.319 <0.0001 0.8191 0.0016 0.001 <0.0001 0.0213 0.0079
325 370 370 360 370 370 370 148 148 148
TNO3 0.00562 −0.114 0.53643 0.69984 0.87089 0.17076 1 0.18093 0.08197 0.03881
0.9196 0.0283 <0.0001 <0.0001 <0.0001 0.001 0.0278 0.322 0.6396
325 370 370 360 370 370 370 148 148 148
Phytoplankton 0.59043 0.32615 0.46474 0.23572 0.29475 0.33432 0.18093 1 0.81455 0.83802
<0.0001 <0.0001 <0.0001 0.0051 0.0003 <0.0001 0.0278 <0.0001 <0.0001
124 166 148 140 148 148 148 166 166 166
Microcystis 0.64101 0.40439 0.3707 0.11115 0.22141 0.1891 0.08197 0.81455 1 0.97835
<0.0001 <0.0001 <0.0001 0.1911 0.0068 0.0213 0.322 <0.0001 <0.0001
124 166 148 140 148 148 148 166 166 166
Cyanobacteria 0.66135 0.45738 0.40047 0.04217 0.17558 0.2174 0.03881 0.83802 0.97835 1
<0.0001 <0.0001 <0.0001 0.6208 0.0328 0.0079 0.6396 <0.0001 <0.0001
124 166 148 140 148 148 148 166 166