
The data stored in the columns in the csv file Microsatellite data Lobaria pulmonaria Finland.csv are as follows: 

Tree: The identifier of the tree on which the sample was collected.
Sample: As more than one sample was taken per tree if several thalli were present, the samples are numbered. 
LPu  Lpu13707: The fragment lengths for each of the alleles tested. 
X: Longitude 
Y: Latitude 
Colonization: This contains information on whether the tree was found at both surveys (0) or only the second survey (1).
Colind: On some of the trees recorded as colonizations there were more than one thallus. In the case where more than one thallus was found on a tree and these were genetically identical, only one of these samples has been used in Analysis I. These are numbered 1. 
Cover: The total size of all thalli on the tree measured on cm2. 
Notalli: The number of thalli found on the tree. 
ParOff: For Analysis III samples with a 1 are labelled offspring, 2 are potential parents and 0 are neither, based on the reasoning in Supplementary Materials.

The coordinate system used is: YKJ, i.e. KKJ 3 and Finland Zone 3. Missing data is marked as NA
