Concept
Mass concentration of calcareous phytoplankton expressed as chlorophyll in sea water
| URI | http://vocab.nerc.ac.uk/standard_name/mass_concentration_of_calcareous_phytoplankton_expressed_as_chlorophyll_in_sea_water/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Definition | Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. Chlorophylls are the green pigments found in most plants, algae and cyanobacteria; their presence is essential for photosynthesis to take place. There are several different forms of chlorophyll that occur naturally. All contain a chlorin ring (chemical formula C20H16N4) which gives the green pigment and a side chain whose structure varies. The naturally occurring forms of chlorophyll contain between 35 and 55 carbon atoms. "Calcareous phytoplankton" are phytoplankton that produce calcite. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. | ||
| Date | None | ||
| Note | accepted | ||
| modified | 2018-12-17 17:17:12.0 | ||
| Broad Match | P02:CPWC |
Chlorophyll pigment concentrations in water bodies | |
| Exact Match | http://mmisw.org/ont/cf/parameter/mass_concentration_of_calcareous_phytoplankton_expressed_as_chlorophyll_in_sea_water | ||
| http://vocab.nerc.ac.uk/standard_name/mass_concentration_of_calcareous_phytoplankton_expressed_as_chlorophyll_in_sea_water/ | |||
P07:CF14N6 |
mass_concentration_of_calcareous_phytoplankton_expressed_as_chlorophyll_in_sea_water | ||
| Related | P06:UKMC |
Kilograms per cubic metre | |
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