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A sampling unit was made of a pitfall to collect arthropods in a field of organic winter wheat, near Wimborne, Dorset, UK in 1996. The sampling units were located on a 9 x 7 rectangular grid at intervals of 30 m. There were six sampling dates.

Usage

arthropods

Format

A data frame with 378 rows and 4 variables:

[, 1:2]x,yGrid spatial coordinates.
[, 3:4]xm,ymMetric spatial coordonates.
[, 5]tSampling date. 1: 7 Jun, 2: 14 Jun, 3: 21 Jun, 4: 28 Jun, 5: 5 Jul, 6: 12 Jul 1996.
[, 6]iCounts of arthropods.

Source

Holland JM, Winder L, Perry JN. 1999. Arthropod prey of farmland birds: Their spatial distribution within a sprayed field with and without buffer zones. Aspects of Applied Biology 54: 53-60.