[Parameters: Topic='LAND SURFACE', Term='SOILS', Variable_Level_1='POTASSIUM']
European Diatom Database - Southern England DatasetEntry ID: uk_nc_eddi_SEng
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.
The original dataset included 31 ponds and pools from southeast England. They are all relatively small, shallow, lowland, artificial waterbodies. All sites have circumneutral to alkaline pH and ... are nutrient-rich. Surface sediment samples were collected during July and August 1990 by University College London and diatoms were counted by Helen Bennion. Following removal of one outlier, a training set of the remaining 30 ponds was used to generate a diatom TP transfer function (Bennion, 1994, 1995; Bennion & Smith, 2000; Bennion et al., 1997). The diatom inference model had good predictive power (apparent r2=0.79; RMSE=0.161 log10TP µg l-1; RMSEP=0.279 log10TP µg l-1). A subset of 26 of these sites is included in EDDI and this forms part of the larger combined NW European training set (Bennion et al., 1996). Palaeolimnological studies have been undertaken at a number of the southeast England sites (Bennion, 1993, 1994).
Data Set Citation
Dataset Originator/Creator: Helen Bennion
Dataset Title: European Diatom Database - Southern England Dataset
Dataset Publisher: The University of NewcastleOnline Resource: http://craticula.ncl.ac.uk/Eddi/jsp/datasetdesc.jsp?DatasetId=SEng
Start Date: 1990-01-01
TERRESTRIAL HYDROSPHERE > SURFACE WATER > LAKES
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ALKALINITY
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CHLOROPHYLL
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONDUCTIVITY
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PH
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PHOSPHOROUS COMPOUNDS
LAND SURFACE > SOILS > CALCIUM
LAND SURFACE > SOILS > MAGNESIUM
LAND SURFACE > SOILS > POTASSIUM
BIOLOGICAL CLASSIFICATION > PROTISTS > DIATOMS
BIOLOGICAL CLASSIFICATION > PLANTS > MICROALGAE > DIATOMS
ISO Topic Category
Role: TECHNICAL CONTACT
Phone: 44 20 7679 5550
Fax: 44 20 7679 7565
Email: hbennion at geog.ucl.ac.uk
Environmental Change Research Centre, Department of Geography, 26 Bedford Way, University College London, London WC1H 0AP, UK http://www.geog.ucl.ac.uk/~hbennion/
Role: DIF AUTHOR
Phone: (301) 614-6898
Email: Tyler.B.Stevens at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: MD
Postal Code: 20771
Bennion, H. (1993). A diatom-phosphorus transfer function for eutrophic ponds in southeast England. Unpublished PhD, University College London.
Bennion, H. (1994). A diatom-phosphorus transfer function for shallow, eutrophic ponds in southeast England. Hydrobiologia, 275/276, 391-410.
Bennion, H. (1995). Surface-sediment diatom assemblages in shallow, artificial, enriched ponds, and implications ... for reconstructing trophic status. Diatom Research, 10, 1-19.
Bennion, H., Juggins, S. & Anderson, N. J. (1996a) Predicting epilimnetic phosphorus concentrations using an improved diatom-based transfer function and its application to lake eutrophication management. Environmental Science and Technology, 30, 2004-2007.
Bennion, H., Harriman, R. & Battarbee, R. W. (1997) A chemical survey of standing waters in south-east England, with reference to acidification and eutrophication. Freshwater Forum, 8, 28-44.
Bennion, H. & Smith, M. A. (2000). Variability in the water chemistry of ponds in south-east England, with special reference to the seasonality of nutrients and implications for modelling trophic status. Hydrobiologia, 436, 145-158.
Creation and Review Dates
DIF Creation Date: 2011-04-07
Last DIF Revision Date: 2011-04-07