The major-element chemistry of suspended particles in the north basin of windermere

Details The major-element chemistry of suspended particles in the north basin of windermere The major-element chemistry of suspended particles in the north basin of windermere

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46.1921s&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 46, Issue 10, pp.1921-1930

Computer Science

1

Scientific paper

Detailed vertical profiles were taken in the north basin of lake Windermere between July and November 1980. Measurements were made of temperature, dissolved oxygen, pH, total suspended load and the major-element composition (organic C, Al, Fe, Mn, Si, S, P, Ca, Mg, Ba and K) of suspended particles. Excess concentrations (those reactive phases not supported by detrital phases) of particulate S, P, Ca, Mg, Ba and K are highest in the epilimnion due to their incorporation into the growing phytoplankton. These elements are associated with planktonic organic matter and are rapidly recycled in the upper 25 m of this 60 m oxic lake. This is documented by the decrease with depth of both excess concentrations of S, P, Ca, Mg, Ba and K and their ratios to POC. Large concentrations of excess particulate Si occur in the hypolimnion as the result of the settling out of diatom skeletal matter produced near the surface during the spring bloom. These siliceous particles do not contain significant quantities of excess particulate S, P, Ca, Mg, Ba and K. This observation supports the conclusion that organic matter is the important recycling matrix for these inorganic elements. Elevated concentrations of excess particulate Mn at depth indicate that there is a Mn-redox cycle operating in the lake.

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