hex.spp {maptree} | R Documentation |
Binary matrix (1 = present) for distributions of 248 native breeding bird species for 404 grid cells in Oregon, USA.
data (hex.spp)
A matrix with 404 rows and 248 columns.
Row labels are hexagon identifiers from White et al. (1992). Column labels are species element codes developed by The Nature Conservancy (TNC), the Oregon Natural Heritage Program (ONHP), and the Association for Biodiversity Information (ABI).
Denis White, white.denis@epa.gov
Master, L. (1996) Predicting distributions for vertebrate species: some observations, Gap Analysis: A Landscape Approach to Biodiversity Planning, Scott, J.M., Tear, T.H., and Davis, F.W., editors, American Society for Photogrammetry and Remote Sensing, Bethesda, MD, pp. 171-176.
White, D., Preston, E.M., Freemark, K.E., Kiester, A.R. (1999) A hierarchical framework for conserving biodiversity, Landscape ecological analysis: issues and applications, Klopatek, J.M., Gardner, R.H., editors, Springer-Verlag, pp. 127-153.
White, D., Kimerling, A.J., Overton, W.S. (1992) Cartographic and geometric components of a global sampling design for environmental monitoring, Cartography and Geographic Information Systems, 19(1), 5-22.
TNC, http://www.tnc.org/
ONHP, http://www.heritage.tnc.org/nhp/us/or/
ABI, http://www.abi.org/
TNC/ABI species data, http://consci.tnc.org/src/overview.htm