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THE SEASONAL VARIATION OF PHOSPHATE, SILICATE, AND NITRATE IN WATERS OF THE ENGLISH LAKE DISTRICT 1
Author(s) -
Heron J.
Publication year - 1961
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1961.6.3.0338
Subject(s) - silicate , nitrate , diatom , phosphate , environmental science , population , hydrology (agriculture) , oceanography , geology , physical geography , ecology , geography , biology , chemistry , organic chemistry , biochemistry , demography , geotechnical engineering , sociology
A record is presented of two years continuous observations, from January 1958, to March 1960, of the north and south basins of Windermere, Esthwaite Water, and Blelham Tarn. The changes in phosphate concentration together with data for silicate and nitrate are shown. Rainfall, temperature, and total diatom population are also included. An improved method for the determination of phosphate has made possible the recognition of a vernal decline and subsequent autumnal increase in the concentration of this constituent. The changes in the chemical composition of the water are attributed to the influence of conditions in the catchment area rather than changes in the lake itself.