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Document Type

Research

Abstract

The diatom Cylindrotheca gracilis (Breb. ex Kutz) Grun., considered by some as a "Brackish water" species, was found as a massive growth in isolated pools along Dugout Creek, Dickinson County, Iowa. Chemical analyses show the water to be high in S04, Mg., Ca., and low in Cl ions. Comparative data from other waters in the United States containing this species shows similar pattern of high conductivity suggesting that factors other than chlorides might be more critical for growth. United States distribution for this diatom includes: Maryland (brackish water), Ohio (fresh water) and Iowa (fresh water).

Publication Date

1968

Journal Title

Proceedings of the Iowa Academy of Science

Volume

75

Issue

1

First Page

36

Last Page

41

Copyright

© Copyright 1968 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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