Resources

Time series dataset from the Plankton Monitoring Programme at Stations L4 and E1

Data set information

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General  
Data holding centrePlymouth Marine Laboratory
CountryUnited Kingdom  United Kingdom
ProjectClimate Linked Atlantic Sector Science(CLASS)
Time period1988 - (ongoing)
OngoingYes
Geographical area

Station L4 is located in the English Channel, 10 nautical miles south-west of Plymouth, UK. ( 50.25N, 04.22W).

Observations 
Parameters

Ammonium and ammonia concentration parameters in water bodies; Air pressure; Carotenoid and flavenoid pigment concentrations in water bodies; Phytoplankton taxonomic biomass in water bodies; Air temperature; Atmospheric humidity; Variable fluorescence parameters; Electrical conductivity of the water column; Particulate total and organic carbon concentrations in the water column; Chlorophyll pigment concentrations in water bodies; Dissolved oxygen parameters in the water column; Wind strength and direction; Raw fluorometer output; Raw light meter output; Bathymetry and Elevation; Particulate total and organic nitrogen concentrations in the water column; Optical backscatter; Phytoplankton taxonomic abundance in water bodies; Light absorption in the water column; Salinity of the water column; Ocean colour and earth-leaving visible waveband spectral radiation; Dissolved concentration parameters for other gases in the water column; Density of the water column; Silicate concentration parameters in the water column; Dissolved total or organic phosphorus concentration in the water column; Temperature of the water column; Raw suspended particulate material concentration sensor output; Urea concentration parameters in the water column; Zooplankton taxonomy-related abundance per unit volume of the water column; Zooplankton taxonomy-related biomass expressed as carbon per unit volume of the water column; Phaeopigment concentrations in the water column; Concentration of suspended particulate material in the water column; Nitrite concentration parameters in the water column; Solar Radiation; Concentration of alkanes in the water column; Sound velocity and travel time in the water column; Visible waveband radiance and irradiance measurements in the atmosphere; Visible waveband radiance and irradiance measurements in the water column; Zooplankton egg hatch proportion; Transmittance and attenuance of the water column; Concentration of other organic contaminants in the atmosphere

Instruments

Fluorometers; radiometers; optical backscatter sensors; water temperature sensor; plankton nets; discrete water samplers; salinity sensor; water pressure sensors; transmissometers; CTD; dissolved gas sensors

Description 
Summary

The data set comprises measurement of physical and biological oceanographic parameters initially collected as part of the Plankton Monitoring Programme at Station L4 from 1988 onwards. Station L4 located in the English Channel, 10 nautical miles south-west of Plymouth, is one of a series of hydrographic stations in the Western English Channel which have been the basis of a series of hydrographic surveys carried out during the 20th Century by scientists at the Marine Biological Association in Plymouth. In May 2002 sampling expanded to include Station E1, approximately 25 nautical miles south-west of Plymouth. Plankton Monitoring began through the work of the Plymouth Marine Laboratory (PML) Zooplankton Group. A long term time-series of weekly observations has been established by exploiting the activities of the PML small boats (Sepia, Squilla and Plymouth Quest) in a opportunistic way as by-product of their other sampling activities, for example the collection live plankton, sea-water, trawling for fish and squid. Initially no formal research programme or long term funding for the Plankton Monitoring existed but the series was included in NERC Oceans 2025 funding as a Sustained Observatory and continues to be funded under NERC National Capability. The programme has evolved to be known as the Western Channel Observatory (WCO). Although every attempt has been made to standardise methodology and achieve data consistency it is important to recognize that the varied personnel and research objectives that have contributed to this dataset may impact on the nature of the data set.

OriginatorsPlymouth Marine Laboratory
Data web sitehttp://www.westernchannelobservatory.org.uk/
Availability 
OrganisationPlymouth Marine Laboratory
AvailabilityLicence
ContactThe Director
Address

Plymouth Marine Laboratory
Prospect Place The Hoe
Plymouth
England
PL1 3DH
United Kingdom

Telephone+44 1752 633100
Facsimile+44 (0)1752 633101
Administration 
Collating centreBritish Oceanographic Data Centre
Local identifier1053054
Global identifier732
Last revised2019-05-07