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European Diatom Database-Surface Waters Acidification Programme Entry ID: uk_nc_eddi_swap |
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Summary
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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 Surface Waters Acidification Programme (SWAP) calibration training set included initially 178 surface sediment diatom assemblages and the associated environmental variables from 170 sites. Data-screening reduced these to 167 lakes, which using weighted averaging give superior results in terms of lowest root mean squared errors of prediction in cross-validation (Birks et al. 1990a; Birks et al. 1990b). The refined diatom/water chemistry training set used within the SWAP project is derived from five regional datasets (number of samples in parentheses) from Sweden (30), Norway (51), Scotland (60), Wales (32) and the English Lake District (5). These sites represent upland lakes in Britain and both upland and lowland lakes in Scandinavia with a bias towards acidic waters. Using gravity or a piston corer, surface sediment samples were usually taken from the deepest point in each lake and in all cases the top 0.5 cm was used for diatom preparation. A total of approximately 500 diatom valves per sample were counted. As a result of the considerable variation in taxonomic and nomenclatural usage between diatomists in different laboratories a programme of taxonomic harmonization was undertaken to construct a common diatom dataset (Munro et al. 1990). The development and application of the SWAP training set is very well documented in the publications cited below and in many subsequent projects which have applied SWAP training set in other contexts or compared its performance with that of new training sets. |
Parent DIF
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This data set description is a member of a collection. The collection is described in uk_nc_eddi |
Geographic Coverage
| N: 64.8 | S: 52.18 | E: 17.53 | W: -5.65 |
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Data Set Citation
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Dataset Originator/Creator:
SWAP Participants
Dataset Title: European Diatom Database-Surface Waters Acidification Programme Dataset Release Place: Newcastle upon Tyne, United Kingdom Dataset Publisher: The University of Newcastle |
Temporal Coverage
| Start Date: 1979-01-01 |
| Stop Date: 1987-01-01 |
Location Keywords
Science Keywords
| TERRESTRIAL HYDROSPHERE >SURFACE WATER >LAKES >LAKEWATER CHEMICAL DATA [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >ALKALINITY [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >CONDUCTIVITY [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >NITROGEN COMPOUNDS [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >PH >LAKEWATER PH TRANSFER FUNCTION [Definition] |
| TERRESTRIAL HYDROSPHERE >WATER QUALITY/WATER CHEMISTRY >TRACE METALS [Definition] |
| LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENT CHEMISTRY >SURFACE SEDIMENT SAMPLES [Definition] |
| LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENTS >SURFACE SEDIMENT SAMPLES [Definition] |
| BIOLOGICAL CLASSIFICATION >PROTISTS >DIATOMS [Definition] |
| BIOLOGICAL CLASSIFICATION >PLANTS >MICROALGAE >DIATOMS |
| BIOSPHERE >AQUATIC ECOSYSTEMS >LAKES [Definition] |
ISO Topic Category
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BIOTA
ENVIRONMENT GEOSCIENTIFIC INFORMATION INLAND WATERS |
Quality
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Data-screening reduced the 170 lakes to 167 lakes, which using weighted averaging give superior results in terms of lowest root mean squared errors of prediction in cross-validation (Birks et al. 1990a; Birks et al. 1990b). |
Access Constraints
| None |
Use Constraints
| None |
Keywords
| The European Diatom Database |
| surface-sediment diatom assemblages |
| surface water acidification |
| eutrophication |
| climate change |
| Plantae |
| Plant |
| Chromista |
| Bacillariophyta |
| alkalinity |
| aluminium |
| calcium |
| chloride |
| conductivity |
| iron |
| magnesium |
| manganese |
| maximum depth of lake |
| nitrate |
| pH |
| potassium |
| silica |
| sodium |
| sulphate |
| total nitrogen |
| total organic carbon |
| total phosphorus |
| water depth of diatom sample |
| zinc |
Data Set Progress
| COMPLETE |
Data Center
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European Diatom Database, University of Newcastle, UK
[Information]
Data Center URL: http://craticula.ncl.ac.uk/Eddi/jsp/ Dataset ID: SWAP
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Distribution
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Fees:
None
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Personnel
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RICK
BATTARBEE Role: TECHNICAL CONTACT Phone: 44 20 7679 7582 Fax: 44 20 7679 7565 Email: rbattarb at geog.ucl.ac.uk Contact Address: Environmental Change Research Centre, Department of Geography, 26 Bedford Way, University College London, City: London Postal Code: WC1H 0AP Country: United Kingdom |
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JOHN
BIRKS Role: TECHNICAL CONTACT Phone: 47 55 583350 Fax: 47 55 589667 Email: John.Birks at bot.uib.no Contact Address: Botanical Institute, University of Bergen, City: Allegaten 41 Province or State: Bergen Postal Code: N-5007 Country: Norway |
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STEPHEN
JUGGINS Role: TECHNICAL CONTACT Phone: 44 191 222 8799 Fax: 44 191 222 5421 Email: Stephen.Juggins at ncl.ac.uk Contact Address: University of Newcastle Department of Geography Newcastle upon Tyne NEI 7RU Country: UNITED KINGDOM |
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TYLER
B.
STEVENS Role: DIF AUTHOR Phone: (301) 614-6898 Fax: 301-614-5268 Email: Tyler.B.Stevens at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA |
Publications/References
Birks, H. J. B., S. Juggins, et al. (1990). Lake surface water chemistry
reconstructions from palaeolimnological data. The Surface Waters Acidification
Programme. B. J. Mason, Cambridge University Press:301-313.
Birks, H. J. B., J. M. Line, S. Juggins, A.C. Stevenson & C.J.F. ter Braak.
(1990). Diatoms and pH reconstruction. Philosophical Transactions of the Royal
Society of London, B 327: 263-278.
Stevenson, A.C., S. Juggins, H.J.B. Birks, D.S. Anderson, N.J. Anderson, R.W.
Battarbee, F. Berge, R.B. Davis, R.J. Flower, E.Y. Haworth, V.J. Jones, J.C.
Kingston, A.M. Kreiser, J.M. Line, M. M.A.R. & I. Renberg, 1991. The Surface
Waters Acidification Project Palaeolimnology Programme: Modern Diatom/
Lake-Water Chemistry Data-Set. ENSIS Ltd., London: 86 pp.
reconstructions from palaeolimnological data. The Surface Waters Acidification
Programme. B. J. Mason, Cambridge University Press:301-313.
Birks, H. J. B., J. M. Line, S. Juggins, A.C. Stevenson & C.J.F. ter Braak.
(1990). Diatoms and pH reconstruction. Philosophical Transactions of the Royal
Society of London, B 327: 263-278.
Stevenson, A.C., S. Juggins, H.J.B. Birks, D.S. Anderson, N.J. Anderson, R.W.
Battarbee, F. Berge, R.B. Davis, R.J. Flower, E.Y. Haworth, V.J. Jones, J.C.
Kingston, A.M. Kreiser, J.M. Line, M. M.A.R. & I. Renberg, 1991. The Surface
Waters Acidification Project Palaeolimnology Programme: Modern Diatom/
Lake-Water Chemistry Data-Set. ENSIS Ltd., London: 86 pp.
Creation and Review Dates
DIF Creation Date:
2002-09-23
Last DIF Revision Date:
2012-12-21
Future DIF Review Date:
2003-09-23
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