gypsymoth {epimdr2}

Defoliated by gypsy moth each in northeast US 1975-2002.

Description

A list containing the fraction of forest defoliated by the gypsy moth in 20km x 20km pixels across northeast US in each year between 1975 and 2002.

Usage

gypsymoth

Format

A list with two matrices each with 1086 rows:

xy

A matrix with two columns representing UTM coordinates

defoliation

A matrix with 28 columns representing pixel-wise defoliation between 1976 and 2002

Source

Bjornstad, O. N., Robinet, C., & Liebhold, A. M. (2010). Geographic variation in North American gypsy moth cycles: subharmonics, generalist predators, and spatial coupling. Ecology, 91(1), 106-118. <doi:10.1890/08-1246.1>