arthropods {epiphy} | R Documentation |
Counts of arthropods.
Description
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,y | Grid spatial coordinates. |
[, 3:4] | xm,ym | Metric spatial coordonates. |
[, 5] | t | Sampling date. 1: 7 Jun, 2: 14 Jun, 3: 21 Jun, 4: 28 Jun, 5: 5 Jul, 6: 12 Jul 1996. |
[, 6] | i | Counts 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.
[Package epiphy version 0.5.0 Index]