Data frame showing territory vacancy of H. ostralegus on Schiermonnikoog from 1984 - 2015. Data frame is generated in the vignette 'prepare_data'.
A data frame with 3,116 rows and 7 variables
Median elevation of grid square (cm above MHT in 1971).
Year of measurement.
Distance to the coastline.
Distance to nearest tidal gully.
Status of territory. Either 'leapfrog' (i.e. inland) or 'resident' (i.e. coastal).
Study sub-area of grid square.
Whether or not a territory was vacated the following year.
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