[Parameters: Topic='BIOSPHERE', Term='AQUATIC ECOSYSTEMS', Variable_Level_1='PELAGIC HABITAT']
Sir Alister Hardy Foundation for Ocean Science (SAHFOS) Continuous Plankton Recorder (CPR) Survey DatabaseEntry ID: GLOBEC_009_SAHFOS_001
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Abstract: The aims of the Continuous Plankton Recorder (CPR) Survey are to monitor the near-surface plankton of the North Atlantic and North Sea on a monthly basis, using Continuous Plankton Recorders on a network of routes to cover the area.
Tables of month/year sampling, or a list of latitude, longitude and date of selected samples in the database can be obtained by using the 'Data Extract' link. There ... is second trial page returning data from irregular polygons.
Spatial and temporal data are stored for every sample analyzed by the CPR survey, since 1946. This amounts to almost 170000 samples, with around 200 more samples added per month. The presence of every planktonic entity identified on each sample is stored in the database and there are almost 2 million plankton records in total. The database also contains supportive information such as tow locations, times and dates, ship details, a taxon catalogue and analyst details.
Over 400 entities have been identified on CPR samples, and the 'abundance' of each entity on each sample can be extracted from the database. Some are identified to species level, some to genus level, and some at a higher taxanomic level. Some entities are groups of other entities. A complete list is kept in the database and can be found in the Plankton List page.
Data can be extracted from user defined areas, over specified periods, for selected entities. For example, all samples taken from the Dogger Bank area in the North Sea during March April and May since 1946 could be extracted from the database, and the 'abundance' of selected diatom species on each sample could be listed. Alternatively, an average value, number of samples, and standard deviation per year per month, could be retrieved. The data can be exported to statistical and presentation packages in many popular formats such as text, rich text, comma separated, MS Excel, MS Access, MS Word, Fox Pro, Dbase, Lotus and to SQL compliant databases. SAHFOS can supply some descriptive data at little cost (usually free).
Information taken from SAHFOS website: http://www.sahfos.ac.uk/sahfos-home.aspx
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Start Date: 1954-01-01
ISO Topic Category
Quality Because the AAGN only includes geodetic sites on stable rock, the coverage is limited to such areas. In addition, the majority of the network is from Mawson to the South Prince Charles Mountains, west to Enderby Land and a spur to Davis. There are other small quantities of control in the coastal regions of the AAT and at Casey and Commonwealth Bay. The AAGN is an accumulation of geodetic survey ... observations since 1954. They have regularly been adjusted to provide positions on a variety of datums, but the latest ITRF positions supersede all previous positions for these sites. All the geodetic sites in the AAGN are uniquely linked to other attributes in a relational database. The accuracy of the positions depends on the vintage, type and geometric position of the observations used. It varies from metres for older observations in difficult areas, to centimetres for positions derived from modern, well configured GPS.
Access Constraints These data are publicly available for download from the URL given below.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAGN when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 10 MB
Distribution Format: pdf
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 2 6249 9049
Fax: +61 2 6249 9929
Email: gary.johnston at ga.gov.au
Geodetic Operations Geoscience Australia Earth Monitoring Group (GEM) Geoscience Australia GPO Box 378
Province or State: Australian Capital Territory
Postal Code: 2601
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1999-10-07
Last DIF Revision Date: 2013-01-22