Nutrient Distribution in the Tamar estuary, south west England (June 1977 - August 1978)

Data set information

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Data holding centrePlymouth Marine Laboratory
CountryUnited Kingdom  United Kingdom
Time periodFrom June 1977 to August 1978
Geographical area

Tamar Estuary, Plymouth, south west England


Chlorophyll pigment concentrations in water bodies; Dissolved oxygen parameters in the water column; Nitrate concentration parameters in the water column; Phosphate concentration parameters in the water column; Salinity of the water column; Temperature of the water column; Concentration of suspended particulate material in the water column; Alkalinity, acidity and pH of the water column; Silicate concentration parameters in the water column


Fluorometers; continuous water samplers; particulates samplers; salinity sensor; pH sensors; autoanalysers; electron microprobes; dissolved gas sensors


Nutrient analyses were obtained by deploying a Technicon II AutoAnalyser system in a continuously recording manner during axial traverses of the estuary aboard a 12m length flat bottomed Rotork Seatruck. A submersible pump fixed at a depth of 1m provided a primary supply of estuarine water from which subsidiary streams were tapped for measurement of salinity, pH, dissolved oxygen, turbidity and chlorophyll fluorescence. On each day's investigation, a single axial traverse covering some 20 to 30km was completed in approximately 2.5 hours and was repeated between two and five times. Ten surveys were carried out between June 1977 and August 1978.

OriginatorsPlymouth Marine Laboratory

Morris, A.W., Bale, A.J. and Howland, R.J.M. (1981) Nutrient distributions in an estuary: Evidence of chemical precipitation of dissolved silicate and phosphate., Estuarine, Coastal and Shelf Science. Vol 12(2): 205-216.; Morris, A.W., Bale, A.J. and Howland, R.J.M. (1982) Chemical variability in the Tamar estuary, south-west England., Estuarine, Coastal and Shelf Science, Vol 14(6): 649-661.

OrganisationPlymouth Marine Laboratory
AvailabilityBy negotiation
ContactThe Director

Plymouth Marine Laboratory
Prospect Place The Hoe
United Kingdom

Telephone+44 1752 633100
Facsimile+44 (0)1752 633101
Collating centreBritish Oceanographic Data Centre
Local identifier1053029
Global identifier709
Last revised2009-12-01