Description Usage Format Source References Examples
A pollen core from Rogers Lake, Connecticut in the data structure produced by readGPDascii
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The output format is a data frame with columns:
$counts | count matrix with species in columns, depths in rows |
num [1:91, 1:78] 0 0 0 0 0 0 0 0 0 0 ... | |
..- attr(*, "dimnames")=List of 2 | |
.. ..$ : chr [1:91] "7.5" "17.5" "22.5" "32" ... | |
.. ..$ : chr [1:78] "Abi " "Ace.ru " "Ace.sa-t" "Ace.ud " ... | |
$depths | num [1:91] 7.5 17.5 22.5 32 37.5 47.4 58 68.5 79 94.6 ... |
$sample.names | chr [1:91] " " " " " " " " ... |
$absolute.ages | num [1:91] 0 79 119 200 293 ... |
$taxa | chr [1:78] "Abies" "Acer rubrum" "Acer saccharum-type" "Acer undiff." ... |
$short.names | chr [1:78] "Abi " "Ace.ru " "Ace.sa-t" "Ace.ud " ... |
$tax.cat | Factor w/ 7 levels "A","B","F","M",..: 1 1 1 1 1 1 1 1 1 1 ... |
$metadata | chr [1:138] " GPD ASCII Format" " 24 Apr 00" " Raw Counts - All Pollen Types" "" ... |
ftp://ftp.ncdc.noaa.gov/pub/data/paleo/pollen/asciifiles/fossil/ascfiles/gpd/rogerslk.txt
Davis, M.B. 1967. Pollen accumulation rates at Rogers Lake, Connecticut, during late- and postglacial time. Review of Paleobotany and Palynology 2:219-230.
Davis, M.B., and E.S. Deevey, Jr. 1964. Pollen accumulation rates: estimates from late-glacial sediment of Rogers Lake. Science 145:1293-1295.
Davis, M.B. 1969. Climatic changes in southern Connecticut recorded by pollen deposition at Rogers Lake. Ecology 50:409-422.
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