Bacterial Nitrogen Fixation in a Polluted Coral Reef Flat Ecosystem, Kaneohe Bay, Oahu, Hawaiian Islands

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1976-10

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University of Hawaii Press

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Benthic nitrogen fixation was investigated in Kaneohe Bay, Oahu, Hawaiian Islands, which receives secondary sewage from two treatment plants. The range of nitrogen fixation rates (2 to 10 ng N2g-l hr-l) was similar to those reported by other workers for a variety of benthic systems. Enrichment cultures prepared from sediment samples from five stations revealed the existence of several distinct physiological types of nitrogen-fixing bacteria. It was found that 50 percent of the bacterial fixation in the southern sector was light-dependent. There was a significant relationship between the numbers of nitrogen-fixing bacteria detected and rates of nitrogen fixation measured in the sediments.

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Hanson RB, Gundersen KR. 1976. Bacterial nitrogen fixation in a polluted coral reef flat ecosystem, Kaneohe Bay, Oahu, Hawaiian Islands. Pac Sci 30(4): 385-393.

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