Skip to main content

Advertisement

Table 3 Summary results from general linear mixed models testing for differences in the proportion of organic carbon obtained from littoral sources (α) and estimated trophic position (Tpos) of threespine sticklebacks from 25 freshwater locations

From: The temporal window of ecological adaptation in postglacial lakes: a comparison of head morphology, trophic position and habitat use in Norwegian threespine stickleback populations

Test Source DF Estimate ± SE F P
Littoral carbon (α) Intercept   0.981 ± 0.207   < 0.001
R2 = 0.69 Sex 1 0.002 ± 0.009 0.06 0.814
N fish = 482 Total length (cm) 1 −0.030 ± 0.018 2.69 0.102
N populations = 25 Lake age (years) 1 −0.000 ± 0.000 1.06 0.314
  Distance to sea (m) 1 −0.000 ± 0.000 1.57 0.224
  Mean depth (m) 1 −0.000 ± 0.015 0.00 0.992
Trophic position (Tpos) Intercept   2.762 ± 0.165   < 0.001
R2 = 0.51 Sex 1 −0.028 ± 0.010 7.82 0.005
N fish = 482 Total length (cm) 1 0.135 ± 0.021 42.53 < 0.001
N populations = 25 Lake age (years) 1 0.000 ± 0.000 2.80 0.109
  Distance to sea (m) 1 −0.000 ± 0.000 0.11 0.740
  Mean depth (m) 1 −0.010 ± 0.011 0.94 0.343
  1. The habitat characteristics lake age (years before present), mean depth (m), and distance to the sea (m) and individual total length (cm) and sex were predictors. Lake identity was used as a random variable