Table 8.

Data dictionary for soil carbon and nitrogen (dataset iv) from elevational gradients with and without nutrient input from a seabird colony, in Bjørndalen and on Lindholmhøgda, respectively, near Longyearbyen, Svalbard.

Variable name	Description	Variable type	Variable range or levels	Units	How measured
Gradient	Elevational gradient; C = reference, B = nutrient input gradient (seabird colony)	categorical	B – C		defined
Site	Site as a number 1–7	numeric	1–7		defined
PlotID	Plot ID from A to G	categorical	A–G		defined
Variable	Soil nutrient variable; C = carbon, N = nitrogen	categorical	C–N		defined
Value	Soil nutrient content	numeric	0.096 – 28.388	percentage	recorded
Weight_mg	Weight of soil sample	numeric	3.522 – 8.812	mg	recorded
Elevation_m	Elevation of site	numeric	9.759 – 238.159	m a.s.l.	recorded
Longitude_E	Longitude of site	numeric	15.34 – 15.712	Degree east	recorded
Latitude_N	Latitude of site	numeric	78.207 – 78.239	Degree north	recorded

The dataset contains 70 observations sampled across the two elevational gradients. Variable names, description variable type, range or levels, units and short description is given for all variables.