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A DETAILED ANALYSIS OF BIOLOGICALLY IMPORTANT SUBSTANCES IN A PROFILE OFF SOUTHERN CALIFORNIA
Author(s) -
HolmHansen O.,
Strickland J. D. H.,
Williams P. M.
Publication year - 1966
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.1966.11.4.0548
Subject(s) - total organic carbon , environmental chemistry , dissolved organic carbon , particulates , nitrate , carbon fibers , nitrogen , phosphorus , phosphate , organic matter , salinity , chemistry , phytoplankton , water column , silicate , total inorganic carbon , nutrient , geology , carbon dioxide , oceanography , organic chemistry , materials science , composite number , composite material
Detailed vertical profiles of salinity, temperature, 10 soluble inorganic and organic constituents and six particulate organic constituents have been determined at a station over the Santa Catalina Basin. Irregularities in the Profiles suggest nine “layers” in the 1,300 m column of water; four of the layers are clearly defined by physical properties and the remainder largely by variations in their dissolved organic matter and materials such as phosphate, nitrate, and silicate. The ratio of carbon oxidized to nitrate and to phosphate formed in the same water averaged 100 : 18.4 : 3.0 by weight, a ratio to be expected from the oxidation of oceanic phytoplankton. The average ratio by weight of carbon to nitrogen to phosphorus in dissolved organic compounds was 100 : 11 : 1, and the ratio for the particulate organic matter was similar. Except in the top 200 m, the amount of dissolved organic carbon was about 20% of the amount of carbon oxidized and the amount of particulate organic carbon was about 10% of the amount of dissolved organic carbon in the same water. Other ratios are given for silicate, nitrogen, and phosphorus.