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Table 1 Summary temperature data (°C) from synthesis of Group 1: Local scale studies

From: What are the effects of wooded riparian zones on stream temperature?

Parameter No. of effect sizes (no. independent articles) Range (1)Weighted average (2)Unweighted average (* = heterogeneity P <0.05) (3)Aggregated weighted average (4) Publication bias? p-value of Egger’s test (on aggregated data) (5) Test of study infuence1 (6) Effect of buffer width? P-value, coefficient and its SE
Mean 8 (6) 0 – 0.74 0.39 0.22 0.39 P = 0.60 Ns P = 0.85
    (-0.13, 0.91) (-0.30,0.75) (-0.140,0.92)    coef = 0.01
         0.06 (SE)
Summer mean 5(4) 0.03– 1.36 0.57 0.71* 0.63 P = 0.49 Ns P = 0.62
    (0.14, 1.00) (0.25,1.18) (0.06, 1.20)    coef = 0.04
         0.07(SE)
Spring mean 4(3) 0.1– 0.72 0.26 0.29 0.23 - Ns P = 0.79
    (-0.80, 1.3) (-0.77, 1.35) (-0.92,1.37)    coef = 0.25
         0.92 (SE)
Max 9(7) 0.86– 6.99 3.16 3.08 3.37 P = 0.82 Ns P = 0.44
    (2.06, 4.27) (1.91,4.25) (1.74, 5.01)    coef = 0.06
         0.08 (SE)
Summer max 7(5) 1.79– 8.08 3.26 3.42* 3.46 P = 0.53 Ns P = 0.08
    (2.20, 4.32) (1.85,4.98) (1.96,4.95)    coef = 0.13
         0.07(SE)
Spring max 3(2) 1.48– 3.04 2.60 2.30 2.71 - Ns -
    (0.58, 4.62) (0.27,4.32) (0.52,4.91)    
  1. 1Ns = no significant effect of the removal of any individual stud.