Gustaf Granath edited methods.tex  over 8 years ago

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\subsection*{Sampling and chemical analysis}   The first post-fire measurements of the streams were made on the 21 of August (2014). The fire affected area was during this time closed of and the measurements were therefore made outside the bounderies. The measurement location for Gärsjöbäcken was moved to the original place used in the regional monitoring program when the area was accessible. Three of the seven streams (Gärsjöbäcken, Vallsjöbäcken and Myckelmossbäcken) were measured every second to third week, except during the coldest period between 16th of December to the 27th of January. Synoptic measurements were made at 6 occasions during the eleven months after the fire. The lakes were sampled at one occasion on the 28th of October (2014). The water sampling procedure and water chemistry analysis were made according to the Swedish monitoring program (Fölster et al., 2014) using SWEDAC accredited methods at the geochemical laboratory at the Department of Aquatic Sciences and Assessment at the Swedish University of Agricultural Sciences (Sonesten, 2015). The chemical analysis of the regional monitoring program is presented in table X.  Catchment delineation  \subsection*{Catchment delineation}  The catchments of the sampled streams were produced in ArcGIS 10.3, software from ESRI, using a national elevation model from Lantmäteriet (2015a) that had a resolution of 2x2 m and accuracy of 0.5 m. When rain hits the surface it will run in the steepest slope direction which is determined in the elevation model. By grouping the surfaces of the steepest slopes with the same direction watersheds were delineated.