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dc.contributor.author Laws, Edward A en_US
dc.date.accessioned 2010-02-22T01:00:14Z en_US
dc.date.available 2010-02-22T01:00:14Z en_US
dc.date.issued 1985 en_US
dc.identifier.citation Laws, EA. 1985. Nutrient and energy cycling among phytoplankton, bacteria, and zooplankton. Honolulu (HI): Hawai’i Institute of Marine Biology, University of Hawai’i. Report No.: 38. en_US
dc.identifier.uri http://hdl.handle.net/10125/15074 en_US
dc.description.abstract During the Summer of 1985 students and senior faculty who participated in the HIMB Summer studies Program utilized a variety of experimental techniques to study nutrient and energy cycling among phytoplankton, bacteria, and zooplankton. Bacterial production rates were found to vary by more than an order of magnitude between different locations in the bay and HIMB lagoon, with most of the production being due to free-living (not particle-bound) bacteria. Use of metabolic inhibitors indicated that bacteria played an important role in both the uptake and regeneration of phosphate, and that phytoplankton were by no means the only important consumers of phosphate. Fifty percent or more of phytoplankton photosynthetic rates was due to picoplankton (0.2-2 um). The productivity/biomass ratio for the phytoplankton community was consistent with recent studies which have indicated that the cells are growing rapidly with little reduction in growth rate due to nutrient limitation. A new technique for estimating zooplankton grazing rates using fluorescent rnicrospheres yielded results in excellent agreement with known grazing rates measured in a continuous culture system. Use of bacteria uniformly labeled with 14c was found to be a promising technique for estimating bacteriovore grazing rates and assimilation efficiencies. Studies of the benthic diatom Nitzschia graeffei indicated that 6-40% of the carbon assimilated by this organism was obtained via photoheterotrophy. en_US
dc.description.sponsorship Supported by a grant from the Edwin W. Pauley Foundation. en_US
dc.format.extent 144 pages en_US
dc.language.iso en-US en_US
dc.publisher Hawai'i Institute of Marine Biology (formerly Hawai'i Marine Laboratory) en_US
dc.relation.ispartofseries HIMB Technical Reports en_US
dc.relation.ispartofseries No. 38 en_US
dc.subject.lcsh Marine bacteria--Hawaii--Kaneohe Bay. en_US
dc.subject.lcsh Marine phytoplankton--Hawaii--Kaneohe Bay. en_US
dc.subject.lcsh Marine zooplankton--Hawaii--Kaneohe Bay. en_US
dc.title Nutrient and Energy Cycling Among Phytoplankton, Bacteria, and Zooplankton en_US
dc.type Report en_US
dc.type.dcmi Text en_US

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