Diatom Paleolimnology Data Cooperative Database from the Academy of Natural Sciences

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. Initial emphasis has been 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 consists of
over 20 data sets with over 4000 samples.

The DPDC allows you to:
* Browse and download stratigraphic and calibration data sets (counts,
inferred environmental data, 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 environmental data