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A Phytosociological Study of the Castalia-Myriophyllum Community of Georgia Coastal Plain Boggy Ponds

Don E. Eyles
The American Midland Naturalist
Vol. 26, No. 2 (Sep., 1941), pp. 421-438
DOI: 10.2307/2420968
Stable URL: http://www.jstor.org/stable/2420968
Page Count: 18
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Phytosociological Study of the Castalia-Myriophyllum Community of Georgia Coastal Plain Boggy Ponds
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Abstract

1. The vegetation of five, shallow, boggy ponds of solution origin of the Georgia coastal plain has been studied and described. 2. The greater portion of these ponds was found to be covered by a single layered growth with Castalia odorata and Myriophyllum pinnatum dominant. 3. In each of the five stands twenty meter square quadrats were placed along spaced lines, and data on abundance-cover and frequency were tabulated from these. 4. This Castalia-Myriophyllum community was found to possess about twenty species mostly of high frequency in individual stands and of high constancy in the five stands studied. 5. The species-area curve was found to fit the equation for a hyperbolic curve and the minimal area was determined mathematically to be between 4.4 and 8.5 square meters. 6. Certain characteristics of the peaty substratum were measured, and other observations of an ecological nature made. 7. It was suggested that Myriophyllum pinnatum, Nymphoides aquaticum, Eleocharis Robbinsii, and Eleocharis equisetoides be considered as characteristic species at least as concerns the region studied. Castalia odorata and other species were considered indifferent.

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