GRTSsample: NPS lake chemistry GRTS sample.

In LAStarcevich/TrendNPS: NPS Trend Analyses for Complex Survey Designs

Description

NPS lake chemistry GRTS sample.

Usage

data(GRTSsample)

Format

A data frame with 461 rows and 10 variables.

The design file containing the Sierra Nevada Network lake chemistry GRTS sample draw. Sites were stratified by Park and unequal probability sampling relative to a cost class (mdcaty) were drawn. The sample was drawn using the spsurvey package (Kincaid and Olsen 2015). The variables are as follows:

• siteID. Lake identifier.

• Park. National Park used as stratification variable. (SEKI = Sequoia-Kings Canyon, YOSE = Yosemite)

• WYear. The observation year minus 2008. (0–5)

• xcoord. UTM easting.

• ycoord. UTM northing.

• mdcaty. Multi-density category representing cost class from the unequal probability sample draw.

• panel. Temporal revisit panel, or oversample when an oversample site was used.

• wgt. Design weight from original GRTS sample draw.

• lake_area. Lake area in square meters.

• lake_perim. Lake perimeter in meters.

References

Heard, A.M., L.A. H. Starcevich, J.O. Sickman, M. Goldin Rose, and D.W. Schweizer. 2012. Sierra Nevada Network lake monitoring protocol. Natural Resource Report NPS/SIEN/NRR-2012/551. National Park Service, Fort Collins, Colorado.

Kincaid, T. M. and Olsen, A. R. 2015. spsurvey: Spatial Survey Design and Analysis. R package version 3.1. http://www.epa.gov/nheerl/arm/.

LAStarcevich/TrendNPS documentation built on May 21, 2019, 9:19 a.m.