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Bibliography Note: |
Includes bibliographical references (pages 9-10). |
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Summary, Etc. Note: |
Abstract: To determine whether manipulation of hydrogen-ion concentration of the water could be used to selectively kill bluegills in farm-pond fish populations consisting of bluegills and largemouth bass, tests were conducted with both tap and pond waters in aquariums and with stream water in plastic-lined pools. The pH was changed by the addition of hydrochloric acid, acetic acid, sodium hydroxide, and calcium hydroxide; tests were carried out in the range from 3.3 to 11.2. From the variability of results in different tests and the slight differences in pH tolerance between bluegills and bass, it is concluded that pH manipulation is impractical as a method for selectively thinning bluegills from bass-bluegill populations in ponds. |
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Action Note: |
will digitize $c 20140129 $z Queued for digitization January 29, 2014 $2 pda $5 miu |