Diatom Paleolimnology Data Cooperative
The Diatom Paleolimnology Data Cooperative (DPDC) is a web-accessible database of
diatom and associated ecological and paleolimnological data relevant to study of
global change. It contains data on regional surface-sample calibration sets
(counts, water chemistry, inference models), sediment cores (counts, dating
information, and diatom inferred characteristics), and other types of samples.
It is intended for researchers needing data on long-term trends in variables
related to global change, and diatomists involved with creating those data.
Emphasis is on data sets providing information on salinity, lake level, hydrology,
trophic state, pH, and other factors that can be related to climate change,
acidic deposition and eutrophication.
DPDC data are being copied to the Neotoma Paleoecology database,
which is becoming its primary home. This process will be
completed in 2021. Neotoma stores and makes available a wide variety of paleo
data and provides many more options for exploring and downloading data than
exist on this website. The DPDC is a “constituent database” of Neotoma. As of
2010, diatom data entry efforts shifted from the DPDC database to the Neotoma
paleoecology database ; no data have been added to the original DPDC database
since then. Neotoma now contains substantially more diatom datasets than just
the DPDC. This DPDC website will be maintained for the foreseeable future as
an alternative location to download data and because it provides key browsing
features that are not available in Neotoma.
At this site you can:
- Browse and download stratigraphic and calibration data
sets (counts, water chemistry)
- View individual diatom counts
- Search for all occurrences of an individual taxa among
all data sets; view and download their abundances and corresponding
The best way to understand the features of the DPDC is to browse the webpage and
read the instructions for performing searches and downloading data.
We are accepting diatom core and surface sediment data for addition to Neotoma
and invite researchers to cooperate in this effort. Please contact
Don Charles at
. The success of this effort depends on the voluntary
submissions of the diatom paleoecology community!
Any publications that use data obtained from this website should cite the
contributors’ original publications describing their data.
Creation of the DPDC was funded by the
NOAA Paleoclimatology Program and the
Earth System History Program which are both research initiatives of the U.S.
Global Change Research Program (USGCRP).
Browse list of datasets,
either stratigraphic entities or calibration sets
Search for a particular taxon
over all sites in database; view only those
containing a specific taxon
More information on the DPDC
List of Taxa