Pollen {analogue} | R Documentation |
A database of model pollen samples from a network of sites from North America and Greenland, compiled by Whitmore et al. (2005). Associated climatic and vegetation data are also record.
data(Pollen) data(Climate) data(Biome) data(Location)
For Pollen
, a data frame of 4833 samples and 134 pollen taxa.
For Biome
, a data frame of 4833 samples on, currently, a single
variable:
Fedorova
For Location
, a data frame of the latitude and longitude
locational data for 4833 samples.
Latitude
Longitude
For Climate
, a data frame with 4833 observations on the
following 32 variables.
t[jan:dec]
p[jan:dec]
tave
tmax
tmin
gdd0
gdd5
mtco
mtwa
annp
These datasets were extracted from Version 1.7 of the North American Modern Pollen Database.
All pollen species were included, however, on the Vegetation type (Biome) field of the AVHRR data and selected Climatic variables were extracted. Requests for additional variables to be included in the versions of the data included in the package should me sent to the package maintainer.
The database is archived electronically at two sites:
http://www.lpc.uottawa.ca/data/modern/index.html
http://www.geography.wisc.edu/faculty/williams/web/data.htm
Whitmore, J., Gajewski, K., Sawada, M., Williams, J.W., Shuman, B., Bartlein, P.J., Minckley, T., Viau, A.E., Webb III, T., Anderson, P.M., and Brubaker L.B., 2005. North American and Greenland modern pollen data for multi-scale paleoecological and paleoclimatic applications. Quaternary Science Reviews 24:1828–1848.
Williams, J.W., Shuman, B., Bartlein, P.J., Whitmore, J., Gajewski, K., Sawada, M., Minckley, T., Shafer, S., Viau, A.E., Webb, III, T., Anderson, P.M., Brubaker, L.B., Whitlock, C. and Davis, O.K., 2006. An Atlas of Pollen-Vegetation-Climate Relationships for the United States and Canada. American Association of Stratigraphic Palynologists Foundation, Dallas, TX, 293p.
Williams, J.W. and Shuman, B., 2008. Obtaining accurate and precise environmental reconstructions from the modern analog technique and North American surface pollen dataset. Quaternary Science Reviews, 27: 669–687.
Fedorova, I.T., Volkova, Y.A., Varlyguin, E., 1994. World vegetation cover. Digital raster data on a 30-minute cartesian orthonormal geodetic (lat/long) 1080x2160 grid. In: Global Ecosystems Database Version 2.0. USDOC/NOAA National Geophysical Data Center, Bould, CO.
data(Pollen) data(Climate) data(Biome) data(Location)