[Keyword='climate change']
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European Diatom Database-African Dataset Entry ID: uk_nc_eddi_Africa |
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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 East African dataset and North African dataset were harmonized to construct a unified African data set. Transfer functions were developed from the subsequent training set for inferring past conductivity (r2= 0.87), pH (r2= 0.77), and ratios between alkali and alkaline earth metals (r2 = 0.81) and carbonate-bicarbonate and sulphate + chloride ions (r2 = 0,82) (Gasse et al., 1995) and the model has subsequently been applied to several diatom sequences to reconstruct lake chemistry (e.g. Fritz et al., 1999; Dagnachew et al., in press ; Chalie and Gasse, in press ; Gasse, 2001 ; Gasse, in press ; Verschuren et al., 2000 ). |
Related URL
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Link:
GET DATA
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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: 13.32 | S: -1.72 | E: 41.7 | W: 2.32 |
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Data Set Citation
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Dataset Originator/Creator:
Francoise Gasse
Dataset Title: European Diatom Database-African Dataset Dataset Release Place: Newcastle upon Tyne, United Kingdom Dataset Publisher: The University of Newcastle Online Resource: http://craticula.ncl.ac.uk/Eddi/jsp/datasetdesc.jsp?DatasetId=Africa |
Temporal Coverage
| Start Date: 1960-01-01 |
| Stop Date: 1986-12-31 |
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 >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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The East African and North African data sets have been harmonized to construct a unified African data set. |
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 |
| calcium |
| chloride |
| conductivity |
| magnesium |
| maximum depth of lake |
| pH |
| potassium |
| salinity |
| silica |
| site surface area at time of sampling |
| sodium |
| sulphate |
| total phosphorus |
| water depth of diatom sample |
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: Africa
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Distribution
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Fees:
None
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Personnel
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FRANCOISE
GASSE Role: TECHNICAL CONTACT Phone: 33 4 42 97 15 70 Fax: 33 4 42 97 15 95 Email: gasse at cerege.fr Contact Address: CNRS-CEREGE, Europole Mediterraneen de l'Arbois- BP80 City: Aix en Provence Cedex 04 Postal Code: 13545 Country: France |
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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
Braithwaite, R.J. 2002. Glacier mass balance: the first 50 years of international monitoring. Progr. Phys. Geogr., 26 (1), 76-95.
Cogley, J.G. and W.P. Adams. 1998. Mass balance of glaciers other than the ice sheets. J. Glaciol., 44 (147), 315-325.
Dyurgerov, M.B. 2002. Glacier mass balance and regime: data of measurements and analysis. Boulder, CO, University of Colorado, Institute of Arctic and Alpine Research. INSTAAR Occasional Paper 55.
Dyurgerov, M.B. and M.F. Meier. 2005. Glaciers and the changing Earth system: a 2004 snapshot. Boulder, CO, University of Colorado, Institute of Arctic and Alpine Research. INSTAAR Occasional Paper 58.
Kaser, G., Cogley, J.G., Dyurgerov, M.B., Meier, M.F. and A. Ohmura. 2006. Mass balance of glaciers and ice caps: consensus estimates for 1961-2004. Geophys. Res. Lett., 33 (19), L19501.
Meier, M.F., Dyurgerov, M.B., Rick, U.K., O'Neel, S., Pfeffer, W.T., Anderson, R.S., Anderson, S.P. and A.F. Glazovsky. 2007. Glaciers dominate eustatic sea-level rise in the 21st century. Science, 317 (5841): 1064-1067.
Ohmura, A. 2006. Changes in mountain glaciers and ice caps during the 20th century. Ann. Glaciol., 43, 361-368.
WGMS. 2008. Global Glacier Changes: facts and figures. Zemp, M., Roer, I., Kääb, A., Hoelzle, M., Paul, F. and W. Haeberli (eds.), UNEP, World Glacier Monitoring Service, Zurich, Switzerland: 88 pp.
Zemp, M., Hoelzle, M. and W. Haeberli. 2009. Six decades of glacier mass balance observations - a review of the worldwide monitoring network. Annals of Glaciology, 50A018.
Cogley, J.G. and W.P. Adams. 1998. Mass balance of glaciers other than the ice sheets. J. Glaciol., 44 (147), 315-325.
Dyurgerov, M.B. 2002. Glacier mass balance and regime: data of measurements and analysis. Boulder, CO, University of Colorado, Institute of Arctic and Alpine Research. INSTAAR Occasional Paper 55.
Dyurgerov, M.B. and M.F. Meier. 2005. Glaciers and the changing Earth system: a 2004 snapshot. Boulder, CO, University of Colorado, Institute of Arctic and Alpine Research. INSTAAR Occasional Paper 58.
Kaser, G., Cogley, J.G., Dyurgerov, M.B., Meier, M.F. and A. Ohmura. 2006. Mass balance of glaciers and ice caps: consensus estimates for 1961-2004. Geophys. Res. Lett., 33 (19), L19501.
Meier, M.F., Dyurgerov, M.B., Rick, U.K., O'Neel, S., Pfeffer, W.T., Anderson, R.S., Anderson, S.P. and A.F. Glazovsky. 2007. Glaciers dominate eustatic sea-level rise in the 21st century. Science, 317 (5841): 1064-1067.
Ohmura, A. 2006. Changes in mountain glaciers and ice caps during the 20th century. Ann. Glaciol., 43, 361-368.
WGMS. 2008. Global Glacier Changes: facts and figures. Zemp, M., Roer, I., Kääb, A., Hoelzle, M., Paul, F. and W. Haeberli (eds.), UNEP, World Glacier Monitoring Service, Zurich, Switzerland: 88 pp.
Zemp, M., Hoelzle, M. and W. Haeberli. 2009. Six decades of glacier mass balance observations - a review of the worldwide monitoring network. Annals of Glaciology, 50A018.
Creation and Review Dates
DIF Creation Date:
2010-10-18
Last DIF Revision Date:
2013-01-22
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