This module provides access to data derived from the North American Pollen Database(NAPD) v1.7.
The North American Pollen Data component provides access to this data, which can be filtered by depositional environment. An additional column or columns may be appended to the output data table with the Additional Columns to Include drop-down. A single additional column must be selected if you wish to produce scatter plots.
Pollen data may be filtered by family, genus, species, location (North American states, provice, or county), or latitude or longitude range. As always, be careful when applying filters -- e.g., each region only contains samples from a small subset of depositional environments; you will get no data trying to filter by a depositional environment from which there are no samples for a given region.
The Pollen Type Relative Frequency Calculator may be used to calculate pollen type frequencies. If relative to All Input Data is selected, only three columns are output: PollenTypeName, TaxonomicRank, and RelativeFrequency. From this a Bar Chart may be created, but not a Scatter Plot. If relative to Site is selected, all input columns plus a RelativeFrequency column are output, and this may be input to either a Bar Chart or a Scatter Plot.
The Series Union component can be used as necessary to concatenate data to input to a Scatter Plot, Bar Chart, or Data Viewer.
Note that the data provided by this module is quite large, and so without proper use of filters, it's easy to create pipes that take longer to run than other modules, and produce charts that must be sized very large to see everything.
This project was developed with funding provided by the National Science Foundation Award, Digital Resource Discovery and Dynamic Learning Communities for a Changing Biology (DRD) (# DUE-1044359). We would like to acknowledge the work of Principal Investigators, Advisory Panel members, and Staff who made these packages possible.
This North American Pollen package was developed by a sub-committee composed of the following members of the advisory panel: Dr. Beverly J. Brown (team lead), Dr. Barbara Abraham, Dr. Ken Klemow, Dr. Shana Ederer. For additional information, please click here.