betapart (version 1.1-2)

bbsData: BBS data by state for two timeslices

Description

The data consists of binary presence/absence matrices for 569 bird species across 49 US states for two time slices (1980 - 1985 and 2000 - 2005). Only species (identified by AOU number) recorded during both time periods are included. The data are taken from the North American Breeding Bird Survey dataset and from a version of the database downloaded in May 2009.

Usage

data(bbsData)

source

http://www.pwrc.usgs.gov/BBS/

Examples

data(bbsData)
str(bbs1980)
str(bbs2000)