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Primary Productivity-Phytoplankton Relationships, Hodgson Lake, Portage County, Ohio

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Title: Primary Productivity-Phytoplankton Relationships, Hodgson Lake, Portage County, Ohio
Creators: Olive, John H.; Morrison, John H.; Riley, Charles V.
Issue Date: 1968-05
Citation: The Ohio Journal of Science. v68 n3 (May, 1968), 152-160
Abstract: Primary productivity-phytoplankton relationships were studied for one year (1963-64) in Hodgson Lake, Portage County, Ohio. The lake was found to be a ''blue-green—diatom'' reservoir of moderate productivity, but containing a large phytoplankton standing crop, dominated by the cyanophycean, Oscillatoria rubescens Decandole. Average cell volumes ranged from 1.4 mm3 liter-1 in September to approximately 88.6 mm3liter-1 in June, over 80 percent of which were 0. rubescens. Diatoms, including Cyclotella sp, Fragilaria sp. Asterionella formosa Hass, and Synedra delicatissima W. Sm., usually accounted for <10 percent of the total cell volume. Photosynthesis ranged from 4-5 mgC m-2 day-1 during the winter to approximately 2600-2700 mgC m-2 day-1 in June and October, with an annual mean of 847.5 mgC m~2 day"1. Photosynthesis per unit cell volume ranged from <1ugC day-1 mm-3 during the winter to 172.8 gC day-1 mm-3 in October, averaging 10.5 ugC day-1 mm-3 annually.
URI: http://hdl.handle.net/1811/5387
ISSN: 0030-0950
Rights: Reproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given.
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