Particulate Organic Matter in Kaneohe Bay, Oahu, Hawaii
Date
1970-12
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Hawai'i Institute of Marine Biology (formerly Hawai'i Marine Laboratory)
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Abstract
During the 3-month period from March through May 1970,
a study of particulate organic matter was undertaken in
Kaneohe Bay. The Bay was divided into two basins on the
basis of circulation and topography and eight stations along
the length of the Bay were sampled at 5-meter intervals.
Particulate organic carbon concentrations varied temporally,
ranging at the sewer outfall from a high of 686 ug/1 to a
low of 121 ug/1. Concentrations were constant with depth
and decreased with increasing distance from the sewer
outfall. Particulate nitrogen displayed the same trends as
particulate organic carbon, ranging in concentration from
117 ug/1 to 27 ug/1 at the outfall.
Total organic carbon concentrations showed similar
trends, decreasing from 1.6 to 0.7 mg C/1, except at
Station 2. At Station 2, high surface productivity, probably
caused by increased dissolved organic concentrations,
resulted in a total organic carbon concentration of 2.6 mg/1.
A carbon budget was calculated for the southern basin.
Circulation and primary production were determined to be
important factors in the high organic carbon concentrations
in the Bay; sewage discharge and runoff were secondary
sources. Sewage discharge is indirectly an important source
of Bay carbon as the effluent's high nutrient content
results in high productivity.
The residence time for organic carbon in the southern
basin was calculated to be 5 days.
Description
Keywords
Sewage disposal -- Hawaii -- Kaneohe., Kaneohe Bay (Hawaii), Seawater -- Analysis.
Citation
Steinhilper FA. 1970. Particulate organic matter in Kaneohe Bay, Oahu, Hawaii. Honolulu (HI): Hawai’i Institute of Marine Biology, University of Hawai’i. Report No.: 22.
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61 pages
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