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Table 4 Equation parameters of the multiple linear regression models

From: Spatiotemporal variations of zooplankton community in a shallow tropical brackish lagoon (Sontecomapan, Veracruz, Mexico)

  Grouped data (n  = 30)   Dry season survey (n  = 10)   Rainy season survey (n  = 10)   Norte season survey (n  = 10)  
  Beta p Beta p Beta p Beta p
Number of taxa R 2 = 0.62; p = 0.0002   R 2 = 0.21, p = 0.180 R 2 = 0.12; p = 0.267   R 2 = 0.19; p = 0.196  
 Intercept 225.30 ± 66.40 0.003 55.09 ± 91.50 0.566 143.41 ± 119.32 0.269 59.93 ± 0.83 0.434
 Chlorophyll b 22.54 ± 5.26 0.000 22.09 ± 12.70 0.126 13.68 ± 8.95 0.170 11.02 ± 10.36 0.323
 pH −166.17 ± 45.60 0.002 −51.98 ± 98.05 0.612 −146.16 ± 130.97 0.301 −46.33 ± 60.83 0.471
Diversity R 2 = 0.44; p = 0.0025 R 2 = 0.41; p = 0.180 R 2 = 0.00; p = 0.72 R 2 = 0.06; p = 0.245
 Intercept 6.07 ± 2.46 0.022 −0.65 ± 0.46 0.194 0.44 ± 0.27 0.146 −0.43 ± 0.63 0.507
 Transparency 0.39 ± 0.13 0.005 0.59 ± 0.25 0.046 0.06 ± 0.15 0.710 0.48 ± 0.38 0.245
Zooplankton R 2 = 0.40; p = 0.011 R 2 = 0.16; p = 0.291 R 2 = 0.54; p = 0.055 R 2 = 0.76; p = 0.026
 Intercept 5.88 ± 13.63 0.671 12.39 ± 3.97 0.021 4.94 ± 1.13 0.005 11.60 ± 3.10 0.010
 Transparency −3.23 ± 0.74 0.000 −3.10 ± 1.74 0.125 −0.63 ± 0.70 0.402 −5.32 ± 1.64 0.017
 Chlorophyll b −3.22 ± 1.11 0.009 −3.82 ± 2.67 0.203 −3.82 ± 1.12 0.015 −0.68 ± 2.48 0.793
 Salinity 1.45 ± 0.60 0.024 −1.11 ± 1.47 0.476 1.45 ± 1.27 0.296 0.79 ± 0.77 0.344
Copepods R 2 = 0.39; p = 0.012 R 2 = 0.20; p = 0.255 R 2 = 0.74; p = 0.010 R 2 = 0.63; p = 0.029
 Intercept 17.93 ± 7.62 0.028 9.85 ± 3.49 0.030 5.33 ± 0.97 0.002 13.12 ± 3.30 0.007
 Transparency −3.27 ± 0.78 0.000 −3.15 ± 1.73 0.118 −0.79 ± 0.61 0.242 −5.53 ± 1.73 0.019
 Chlorophyll b −3.97 ± 1.20 0.003 -3.81 ± 2.42 0.166 -4.78 ± 0.95 0.002 -7.50 ± 6.97 0.323
 Chlorophyll a 3.03 ± 1.09 0.012 3.14 ± 3.55 0.411 2.26 ± 0.89 0.044 6.06 ± 6.42 0.382
Nauplii R 2 = 0.38; p = 0.015 R 2 = 0.21; p = 0.249 R 2 = 0.66; p = 0.022 R 2 = 0.75; p = 0.031
 Intercept 15.03 ± 7.89 0.071 8.61 ± 3.60 0.054 4.05 ± 1.15 0.013 11.55 ± 3.39 0.014
 Transparency −3.39 ± 0.81 0.000 −3.39 ± 1.78 0.106 −1.00 ± 0.72 0.216 −5.55 ± 1.78 0.020
 Chlorophyll b −3.96 ± 1.24 0.004 −3.77 ± 2.50 0.181 −4.70 ± 1.12 0.006 6.59 ± 6.60 0.357
 Chlorophyll a 2.87 ± 1.13 0.019 3.10 ± 3.67 0.430 2.12 ± 1.05 0.091 −8.00 ± 7.17 0.307
Acartia tonsa R 2 = 0.52; p = 0.001 R 2 = 0.00; p = 0.577 R 2 = 0.10; p = 0.445 R 2 = 0.00; p = 0.831
 Intercept 14.27 ± 5.38 0.015 47.35 ± 47.53 0.376 −4.06 ± 20.21 0.851 −1.96 ± 5.87 0.755
 Salinity 1.72 ± 0.44 0.001 −4.42 ± 3.69 0.296 −1.68 ± 2.08 0.465 0.23 ± 0.42 0.610
 Chlorophyll a 2.23 ± 0.72 0.005 −3.97 ± 2.92 0.245 2.78 ± 1.54 0.145 0.23 ± 2.39 0.929
 Chlorophyll b −2.16 ± 0.77 0.011 1.97 ± 5.37 0.732 −1.53 ± 1.21 0.276 0.57 ± 2.62 0.840
 pH −14.00 ± 5.57 0.020 −44.55 ± 44.90 0.377 6.42 ± 23.21 0.796 1.98 ± 5.96 0.757
 Transparency −1.22 ± 0.52 0.028 2.46 ± 2.13 0.312 −0.60 ± 0.81 0.500 −0.14 ± 0.67 0.847
Marine Rotifers R 2 = 0.30; p = 0.033 R 2 = 0.22; p = 0.170 R 2 = 0.56; p = 0.022 R 2 = 0.00; p = 0.528
 Intercept −31.44 ± 17.10 0.080 −90.35 ± 58.55 0.167 81.78 ± 22.95 0.009 −24.28 ± 26.44 0.389
 Salinity 2.04 ± 0.79 0.017 3.90 ± 2.35 0.140 2.76 ± 1.56 0.120 16.65 ± 18.37 0.395
 Temperature 25.31 ± 12.19 0.050 61.63 ± 41.21 0.178 −57.75 ± 16.62 0.010 1.22 ± 1.10 0.303
Feshw. rotifers R 2 = 0.50; p = 0.003 R 2 = 0.69; p = 0.018 R 2 = 0.00; p = 0.726 R 2 = 0.76; p = 0.008
 Intercept 50.94 ± 15.57 0.004 53.31 ± 30.04 0.126 22.52 ± 22.41 0.354 10.25 ± 8.45 0.270
 Chlorophyll b 4.39 ± 1.23 0.002 3.17 ± 3.29 0.372 1.04 ± 3.43 0.772 5.06 ± 1.44 0.013
 pH −30.40 ± 11.39 0.015 −54.96 ± 31.01 0.127 −24.07 ± 24.62 0.366 −11.59 ± 8.67 0.230
 Chlorophyll c −1.79 ± 0.79 0.036 −3.18 ± 1.40 0.064 0.11 ± 3.36 0.974 1.21 ± 3.73 0.757
  1. Equation parameters of the multiple linear regression models using forward stepwise method explaining the variations of the main zooplankton parameters. Significant p values (p < 0.05) are in bold characters.