Euro-limpacs Deliverables


Meta-database of existing palaeolimnological data for undisturbed sites and pre-disturbed sites in all stress categories

A number of work packages and tasks within the Euro−limpacs work programme involve the use, collation and collection of palaeolimnological data and involve a range of project partner institutions. The data collected for one particular task will be of considerable use to tasks in different work packages. The utility to the project of the collected data will therefore be increased if there is an agreed level of harmonisation in the type of palaeolimnological data collated or collected and the variables that are recorded in meta−databases. As a result, the production of a meta−database of palaeolimnological data for undisturbed sites and core sections prior to disturbance in all stress categories, scheduled as part of the work programme for Task 3.1, Work Package 1 has been conducted under remit of the Palaeolimnology Cross Cutting Theme (led by UCL). This report describes the first tranche of data collation following a detailed search of the relevant scientific literature and collation of data held by Euro−limpacs partner institutions.

The meta−data are presently held in a Microsoft Excel spreadsheet. An interactive, web−based interface to this database is under construction including the facility for dynamic mapping of subsets of sites to provide a spatial visualisation of the data holdings. Meta−data for sites may be queried interactively using the map interface or via a search facility. This will be made available to the wider consortium during Month 19, and at a later date will be made available publicly via the Euro−limpacs website.

In the first 12 months of Euro−limpacs a meta−database was designed to bring together all information on lakes in Europe where sediment core records can be used to define reference conditions (Deliverable 32). In the last 6 months the database has been populated using both published and unpublished references and reports of palaeolimnological studies of mainly 210Pb −dated cores. Currently the database holds information on 743 lakes comprising 1360 separate studies from 25 European countries This report summarise the data with respect to the distribution of sites geographically, the purpose of the study, the range of analyses used and the timing of change with respect to the impact of the key stressors, acidification and eutrophication. The database also includes links to a “reference manager” literature database and a library of papers and reports held at UCL.

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