Table 3

Effects of log-transformed water volume and leaf litter mass on proportion occupancy

Species

N

R2

F

PF

Parameter

Coefficient

SE

t

Pt


A. triseriatus

20

0.58

14.32

0.0003

Y-intercept

0.063

0.08

0.77

0.45

Water vol

0.27

0.06

4.26

0.001

Leaf mass

0.084

0.19

0.44

0.67


T. rutilus

17

0.37

5.80

0.015

Y-intercept

0.012

0.08

0.15

0.88

Water vol

0.20

0.06

3.40

0.007

Leaf mass

-0.32

0.16

-2.03

0.062


C. guttipennis

20

0.25

4.12

0.033

Y-intercept

0.19

0.08

2.41

0.017

Water vol

0.12

0.06

1.87

0.012

Leaf mass

0.16

0.19

0.82

0.42


H. pulchella

20

0.23

3.77

0.044

Y-intercept

0.16

0.07

2.28

0.035

Water vol

0.15

0.06

2.66

0.017

Leaf mass

-0.14

0.17

-0.84

0.42


M. posticata

8

0.16

1.69

0.28

Y-intercept

0.044

0.11

0.42

0.69

Water vol

0.12

0.08

1.63

0.16

Leaf mass

-0.02

0.22

-0.11

0.92


T. albipunctatus

20

1.93

0.18

Y-intercept

0.11

0.05

2.12

0.049

Water vol

0.048

0.04

1.23

0.24

Leaf mass

0.075

0.12

0.64

0.54


Results of randomization regressions of proportion occupancy vs. log-transformed water volume and leaf litter mass. N = number of months used. Number varies because some species are not active year round. R2 = proportion of variation explained by the model, F = regression model test statistic, PF = probability associated with F statistic, s.e. = standard error of the coefficient estimate, t = test statistic for coefficient, Pt = probability associated with t-statistic.

Paradise et al. BMC Ecology 2008 8:22   doi:10.1186/1472-6785-8-22

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