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WRRCTMR No.60 Analysis of Sand Samples from the Sand Island Sewer Outfall, Mamala Bay, O'ahu (Interim Progress Report)

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Title: WRRCTMR No.60 Analysis of Sand Samples from the Sand Island Sewer Outfall, Mamala Bay, O'ahu (Interim Progress Report)
Authors: Reed, S Arthur
Keywords: Chlorophyta
show 10 moremarine analysis
sand samples
Pinna semicostata
sewage outfall
Mamala Bay

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LC Subject Headings: Benthos -- Hawaii -- Oahu.
Mollusks -- Effect of water pollution on.
Ocean outfalls -- Environmental aspects -- Hawaii -- Oahu.
Sewage disposal in the ocean -- Hawaii -- Oahu.
Mamala Bay (Hawaii)
Issue Date: May 1978
Publisher: Water Resources Research Center, University of Hawaii at Manoa
Citation: Reed SA. 1978. Analysis of sand samples from the Sand Island sewage outfall, Mamala Bay, O'ahu (Interim Progress Report). Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC technical memorandum report, 60.
Series/Report no.: WRRC Technical Memorandum Report
Abstract: Sand grab samples were collected from nine locations at and around existing and proposed ocean sewage outfalls and at a control station. The preserved samples were analyzed for abundance of invertebrates. Stations in the vicinity of the existing outfall (12 m deep) were characterized by
high abundance of annelid tube worms which grew in huge, densely packed clusters. Foraminifera and the green algae Halimeda sp. were absent or in relatively low abundance.
In the vicinity of the proposed outfall (65 m deep) samples contained high abundance of Halimeda sp., moderate quantities of Foraminifera, and the solitary coral Fungia fragilis; no annelid worms were found. This
pattern of abundance was similar to the control station. The pen shell Pinna semicostata was present at most deep water stations. Extensive beds of this mollusk are common in other regions along south O'ahu.
Sponsor: Department of Public Works, City and County of Honolulu, Hawaii Grant/Contract No. City & County T 74 902 F 495 B 319
Pages/Duration: viii + 19 pages
Appears in Collections:WRRC Technical Memorandum Reports

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