|The parameters that quantify the carbonate system in seawater (pH, alkalinity, TCO2 and pCO2).
|Concentrations of synthetic organic compounds used in coatings of ships below the waterline or marine structures to prevent colonisation by marine organisms.
|Measurements of the phytoplankton biomass proxy pigment, usually accompanied by its degradation products (phaeopigments).
|Concentrations of dissolved gases with oxygen and carbon dioxide of primary interest.
|Concentrations of biologically available substances derived from the use of artificial fertilisers in agriculture (primarily nitrogen and phosphorus).
|Concentrations of organic compounds comprising carbon and hydrogen.
|Measurements of any persistent, manufactured or processed solid material discarded, disposed of or abandoned in the marine and coastal environment. These are quantified by collection on beaches, in fishermen's nets, or in specific surveys and include macro objects (nets, bottles etc.) as well as fragments and micro particles in water column, sediment and beaches.
|Metals and metalloids
|Concentrations of metals and metalloids some of which are of environmental concern. This category also includes selenium, a reactive non-metal.
|Load of nitrogen and phosphorus to regional seas by major rivers.
|Concentrations of chemical species (primarily forms of carbon and nitrogen) resulting from sewage outfalls and aquaculture.
|Pesticides and biocides
|Concentrations of synthetic organic compounds designed to kill plants (including algae) or insects deemed physically or economically harmful to man.
|Concentrations of compounds manufactured as medicinal drugs.
|The quantity of litter and debris made up of polymerised organic compounds.
|Concentrations of synthetic organic compounds with one or more chlorine atoms attached to a double benzene ring. These are highly toxic persistent organic pollutants.
|Activities of dissolved and particulate radioctive substances of anthropogenic origin.
|Concentrations of dissolved inorganic silicon usually as hydrosilicic acid (oftem called silicate) and biogenic silica.