Data
Availability Matrices (DAMs)
The primary purpose of the GPPRCG is to coordinate
research across an open-ended, and self-selected community of
researchers. One of the biggest impediments to coordinated phylogenetic
research in this area is the lack of standardization of exemplar
taxa and characters for study. Large data sets exist, but are
only partially overlapping in the taxa studied, thus not rigorously
combinable.
The first thing needed was a new kind of matrix, one that
indicates clearly the places where further research is most
needed. These Data Availability Matrices (DAMs), instead of
the actual data, indicate whether or not the particular character
information is available for a particular taxon (and in most
cases, where the data are available).
They take the form of a simple table that indicates the
existence of comparative data (published and unpublished)
for all exemplar taxa (living and extinct). Also included
are fields for comments and pointers to other entities such
as literature citations and individual specialists or labs,
as well as sources of living material, bulk DNA, herbarium
specimens, and archival material (notes, photos, preserved
or embedded material, permanent slides). Data domains are
based on the interests of particular specialist groups (e.g.,
molecular, morphological). These domains are further subdivided
along specialty (e.g., rbcL (chloroplast), 18S rRNA (nuclear),
spermatozoid ultrastructure, spore morphology, wood anatomy,
floral morphology, etc.). The actual data availability columns
should each indicate a suite of characters that can be gathered
at one time by one kind of technology (these of course will
vary between groups to some extent).
The representative exemplar taxa were chosen, and given
a priority ranking (a number from 1-3 with 1 high), in open
discussion at several GPPRCG meetings (see minutes and summaries
of these meetings, especially http://ucjeps.berkeley.edu/bryolab/GPphylo/summary1.html
and http://ucjeps.berkeley.edu/bryolab/GPphylo/summary4.html
for rationale for choice). We strongly suggest that anyone
contemplating research in this area should consider studying
these exemplar taxa, for maximum comparability with existing
data.
The green plant DAMs thus summarize
known data for exemplar taxa and highlight shortcomings in
current knowledge and thereby pinpoint areas in need of further
investigation. We welcome all suggestions and additions; send
these to Brent Mishler at bmishler@socrates.berkeley.edu
Data Availability Matrices
- WARNING! - some of the tables
are large and will be slow to load/download!
CHOOSE FROM THE FOLLOWING TABLES:
| Data Set
| Web
View
| Download
Data
| Download
Format
| Last Update
|
| Chlorophyceae Data
| View
| Download
not available
| Microsoft Excel
| Oct 1, 1998
|
| Prasinophyte Data
| View
| Download
not available
| Microsoft Word
| Oct 1, 1998
|
| Charophyte Data
| View
| Download
not available
| Microsoft Excel
| Oct 10, 1998
|
| Fern Data
| View
| Download
| HTML Document
| July 26, 1997
|
| Fossil 'Bryophyte' and Basal Vascular Plants
| View
| Download
| RTF Document
| August 15, 1996
|
| Moss Data
| View
| Download
| Microsoft Excel File
| March 1, 1999
|
| Lycophyte Data
| View
| Download
| RTF Document
| November 12, 1996
|
| Fossil Basal Euphyllophytes
| View
| Download
| RTF Document
| August 15, 1996
|
| Ferns, Sphenopsids and Psilotaceae
| View
| Download
| RTF Document
| November 12, 1996
|
| Seed Plants minus Angiosperms
| View
| Download
| RTF Document
| August 15, 1996
|
| Angiosperms
| View
| Download
| RTF Document
| November 18, 1996
|
|
