PMC4564280_01
Location of the case study.. 
A) Location of the study area in Europe highlighted in gray. B) Location of the provenance trials (black dots) in the case study region of Austria and southern Germany. Although, the study region is geographically small, it covers a wide climatic gradient as indicated by the mean annual temperature (MAT) because of its proximity to the Eastern Alps. The authors of the manuscript "Selecting populations for non-analogous climate conditions using Universal Response functions: the case of Douglas-fir in Central Europe" are the copyright holders of the Fig 1 and Fig 2 used in the manuscript. We, therefore permit the open-access journal PLOS ONE to publish Fig 1 and Fig 2 under the Creative Commons Attribution License (CCAL) CC BY 3.0 (http://creativecommons.org/licenses/by/3.0/us/).
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PMC4564280_01_pone.0136357.g001.jpg
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Due to the high topographic heterogeneity in our case study region (compare Fig 1) these comparisons were made for three distinct altitudinal zones: 0-500m (low), 500-1000m (mid), and >1000m (high).