By T. D. Jickells, J. E. Rae

This authoritative quantity comprises contributions from quite a lot of researchers of intertidal sediments. person chapters discover the underlying biogeochemical approaches controlling the habit of carbon, the foodstuff nitrogen and phosphorus, and contaminants reminiscent of poisonous organics, hint metals and synthetic radionuclides in intertidal environments. The biogeochemistry of those environments is necessary to figuring out their ecology and administration. all the chapters contains a complete evaluation and the result of fresh study. The individuals are lively researchers during this different and ecologically vital box. this article is principally for researchers and bosses operating with intertidal sediments, however it also will function a invaluable senior undergraduate and graduate reference textual content in environmental chemistry, environmental technology, earth technological know-how, and oceanography.

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Extra resources for Biogeochemistry of Intertidal Sediments (Cambridge Environmental Chemistry Series)

Sample text

G. 3 Globally averaged profiles of historic sediment contamination by trace metals, in industrialised countries, providing a general idea of the evolution of contamination versus time (years). 100% represents the maximum value reached in cored sediments and 0% the lowest value measured. These values are rough estimates, extrapolated from results reported in the literature to 1990. Section (a) represents a background or low contamination period, section (b) corresponds to the increase in sediment contamination around World War I.

Environmental Technology Letters 4, 317-28. M. (1985) Sediments. In Historical Monitoring, Report No. 31, 1-95, MARC, London. L. (1985a) Principles of Physical Sedimentology, Allen & Unwin, London. L. (1985b) Intertidal drainage and mass-movement processes in the Severn Estuary: rills and creeks (pills). Journal of the Geological Society, London 142, 849-61. L. (1986) A short history of saltmarsh reclamation at Slimbridge Warth and neighbouring areas, Gloucestershire. Transactions of the Bristol and Gloucestershire Archaeologial Society 104, 139-55.

A complete report of trace metal concentrations and behaviour at this site will be given in Allen & Rae (in preparation). There follows here a summary of the results for Zn, in order to demonstrate in broad terms (i) the approach to consideration of the influence of sediment characteristics and early diagenetic processes on trace metal profiles, and (ii) that the record can be, in some instances, straightforward. 6. There is a clear trend of essentially constant values of total Zn (around 150ppm) from 1500 mm to approximately 1000 mm, with a steady increase in concentrations from 1000 mm to 225 ppm at 400 mm.

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