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European Diatom Database-Italian Mountain Lake Dataset
Entry ID: uk_nc_eddi_alpi

Abstract: The European Diatom Database (EDDI) is a web-based information system designed
to enhance the application of diatom analysis to problems of surface water
acidification, eutrophication and climate change.

Surface sediment samples and lakewater chemical data from thirty-one high
mountain lakes were used to derive a lakewater pH transfer function. The lakes
selected lie along a pH gradient on the southern side of the Central Alps in
South Tyrol, in the Ossola Valley, Italy and in Canton Ticino, Switzerland. The
lakes selected are small (up to 0.2 km2) clearwater lakes most of which are
located above the timberline. Samples were collected using gravity corers and
the surface (0-0.5cm) was used to prepare a diatom sample. A total of
approximately 600 diatom valves per sample was counted.
Geographic Coverage
Spatial coordinates   
  N: 46.92   S: 46.0   E: 11.5   W: 8.08

Data Set Citation
Dataset Originator/Creator: Aldo Marchetto
Dataset Title: European Diatom Database-Italian Mountain Lake Dataset
Dataset Release Place: Newcastle upon Tyne
Dataset Publisher: The University of Newcastle
Online Resource:
Parent DIF
This description is a member of a collection. The collection is described in

Temporal Coverage
Start Date: 1989-01-01
Stop Date: 1990-12-31
Quality A total of approximately 600 diatom valves per sample was counted.
Access Constraints None
Use Constraints None
Data Set Progress
Data Center
European Diatom Database, University of Newcastle, UK Supplemental Info
Data Center URL:
Dataset ID: ALPI

Data Center Personnel
Phone: 44 191 222 8799
Fax: 44 191 222 5421
Email: Stephen.Juggins at
Contact Address:
University of Newcastle
Department of Geography
Newcastle upon Tyne
Fees: None
Marchetto, A. & R. Schmidt, 1993. A regional calibration data set to
infer lake water pH from sediment diatom assemblages in alpine
lakes. Mem.Ist. ital. Idrobiol. 51: 115-125.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2002-09-23
Last DIF Revision Date: 2017-08-23
Future DIF Review Date: 2003-09-23