Weights of collected goose excreta on Schiermonnikoog island

For details on sampling scheme and chemical analysis methods see:
Fokkema, Wimke, Wendy Boer, Henk P. Jeugd, Adriaan Dokter, Bart A. Nolet, Luit J. Kok, J. Theo M. Elzenga, and Han Olff. "The nature of plant adaptations to salinity stress has trophic consequences." Oikos 125, no. 6 (2016): 804-811.

period: sampling period (2-week periods)
date: dat of sample collection
plot: vegetation sampling station
count1-3: count at excreta sampling station belonging to this vegetation sampling station
count_avg: average number of droppings over excreta sampling stations
weight_droppings: total weight of the goose excreta found at all excreta sampling stations