Southwest England estuaries

Bryan, G.W., P.E. Gibbs, L.G. Hummerstone, and G.R. Burt. 1987. Copper, zinc, and organotin as long-term factors governing the distribution of organisms in the Fal estuary in southwest England. Estuaries 10 208-219. 

Luoma and Jenne ( ) used less involved methodology to show some correlation between extractable nuclide concentrations and the uptake by Macoma of Zn, Cd, Co and Ag from laboratory-prepared sediments. A close correlation between ammonium acetate-solubility and Zn uptake was observed. In natiire, ammonium acetate also reflected the bioavailability of Zn to Scrobicularia in the estuaries of southwest England better than did other extractants. The correlation was not sufficiently strong to have predictive value, however, and within the narrower range of Zn concentrations in San Francisco Bay no correlation was observed. The exchangeability of Zn, implied by ammonium acetate extraction, may influence the availability of the metal, but it is not the only factor determining uptake. 

Figure 2.5 The Severn Estuary and Tites Point setting in southwest England a schematic vertical profile of the saltmarsh cliff (after Rae Allen, 1993).

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