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Table 1 Environmental characteristics for the ancestral (Gudbrandsdalslågen) and colonized systems (warm streams in bold and cold in italics)

From: Contemporary temperature-driven divergence in a Nordic freshwater fish under conditions commonly thought to hinder adaptation

Location (Figure 1)

Mean width (m)

Mean discharge (m3/sec)

Mean water temperature during spawning period (°C)1

Gudbrandsdalslågen

14.3

10.1 ± 15.3

6.3 ± 1.4 (1992-2001)

Bella (1)

1.3

0.09

6.1 ± 0.7 (2005-2006)

Søre Skotte (2)

0.7

0.02

5.8 ± 1.7 (2003-2007)

Hyrjon (3)

5.0

0.25

3.2 ± 1.1 (1996-2007)

Valåe (4)

5.8

0.42

2.9 ± 0.9 (1996-2007)

  1. 101 June-10 July (years covered are provided in parenthesis)