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Effects of Acidic Growth Conditions on Systematic Characters in the Conjugating Green Algae (Zygnemataceae, Chlorophyta) / KL. Clayton, RW. Hoshaw, RM. McCourt

Conference Author
Environmental Toxicology and Risk Assessment (1991 : Atlantic City, New Jersey)
Physical Description
1 online resource (9 pages) : illustrations, figures, tables
Additional Creators
Clayton, KL., Hoshaw, RW., McCourt, RM., American Society for Testing and Materials, and ASTM International
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Summary
Many years of acid rain have caused countless lakes throughout the world to reach a pH too low to support any animal life and often only limited types of plant life. In this report, a new acidic algal culture medium, KC-1, was developed to simulate acid lake conditions in the laboratory. This medium has the ability to maintain a pH in the range 4.0 to 5.5 by the use of ammonium sulfate (NH4)2SO4 as its primary buffer. Three filamentous strains from two genera of the green algal family Zygnemataceae (Spirogyra communis and Mougeotia transeaui) were grown in KC-1 medium to observe their morphology at low pH levels (range 4.0 to 5.5). Morphology differed markedly for all three strains, when compared to morphology of these same strains that had been maintained in nonacidic culture for up to 30 years. Differences included variations in cell width, cell length, and the structure of cell walls and the chloroplasts. These characters are critically important in species-level taxonomy, which may be complicated by effects of acid rain on phenotype.
Dates of Publication and/or Sequential Designation
Volume 1993, Issue 1179 (January 1993)
Subject(s)
Other Subject(s)
ISBN
9780803152342 (e-ISBN)
9780803118607
0803118600
Digital File Characteristics
text file PDF
Bibliography Note
Includes bibliographical references 18.
Other Forms
Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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Also available in PDF edition.
Reproduction Note
Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1993. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
Technical Details
Mode of access: World Wide Web.
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ASTM International PDF Purchase price USD25.
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