| MI_TSCA {spNNGP} | R Documentation |
Occurrence of Tsuga canadensis (Eastern hemlock) in Michigan
Description
Eastern hemlock (Tsuga canadensis L.) analyzed in Lany et al. (2019). The date comprise hemlock occurrence (binomial outcome) on 17,743 forest stands across Michigan, USA. A set of covariates were also observed at each stand and can be used to explain the probability of hemlock occurrence. Covariates included minimum winter temperature (MIN), maximum summer temperature (MAX), total precipitation in the coldest quarter of the year (WIP), total precipitation in the warmest quarter of the year (SUP), annual actual evapotranspiration (AET) and annual climatic water deficit (DEF). Spatial coordinates are recorded in Longitude (long) and latitude (lat) which are Albers Equal Area (proj4string "+proj=aea +lat_1=55 +lat_2=65 +lat_0=50 +lon_0=-154 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs"). See Lany et al. (2019) for details.
Usage
data(MI_TSCA)
Format
A data frame containing 17,743 rows and 9 columns.
References
Lany, N. K., Zarnetske, P. L., Finley, A. O. and McCullough, D. G. 2019. Complimentary strengths of spatially-explicit and multi-species distribution models. – Ecography doi: 10.1111/ecog.04728