Abstract
The data set consists in a file with two sheets: one includes a matrix of 297 rows and 46 columns, and the second one a matrix of 12 rows and 24 columns. In the first sheet each row is a replicate of an experimental variant with Agrostis capillaris growing on tailing substrate belonging to three experiments witch have the same variants, but are organized at three scales. The data from all experiments are in the same table, with a column indicating by a code the experiment to which they belong. In the second spreadsheet there is a table with the relative plant species cover in the experimental field plots. Experimental design and interpretation of the data are provided in "Implications of spatial heterogeneity of tailing material and time scale of vegetation growth processes for the design of phytostabilisation" [1].