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The effects of pH and varied concentrations of calcium, iron, and magnesium on the morphology of four desmid species: taxonomic considerations
| dc.contributor.advisor | Cox, Elenor R. | |
| dc.creator | Kirk, William Lee | |
| dc.date.accessioned | 2020-01-08T18:22:39Z | |
| dc.date.available | 2020-01-08T18:22:39Z | |
| dc.date.created | 1976 | |
| dc.date.issued | 1975 | |
| dc.identifier.uri | https://hdl.handle.net/1969.1/DISSERTATIONS-183306 | |
| dc.description | Reproduced from typescript | en |
| dc.description.abstract | Pour desmid species were grown as clones in soil-water or a modification of Waris medium. In the modified Waris medium, the concentrations of the elements Calcium, Iron, Magnesium, and the pH were varied individually. All other chemical constituents were held constant. The effects of chemical variations of the medium produced significant differences between test means at the 5% significance level. Most size differences of the means were sufficiently small to be of limited taxonomic value. Changes in the cellular morphology of each species were discussed with respect to taxonomic implications. Suggestions for synonymy were given if cellular variations occurred that resembled subtaxa of the species of allied species | en |
| dc.format.extent | 337 leaves : illustrations | en |
| dc.format.medium | electronic | en |
| dc.format.mimetype | application/pdf | |
| dc.language.iso | eng | |
| dc.rights | This thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use. | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
| dc.subject.classification | 1975 Dissertation K59 | |
| dc.subject.lcsh | Desmidiaceae--Effect of hydrogen-ion concentration on | en |
| dc.subject.lcsh | Desmidiaceae--Effect of calcium on | en |
| dc.subject.lcsh | Desmidiaceae--Effect of iron on | en |
| dc.subject.lcsh | Desmidiaceae--Effect of magnesium on | en |
| dc.subject.lcsh | Desmidiaceae--Classification | en |
| dc.subject.lcsh | Biology | en |
| dc.title | The effects of pH and varied concentrations of calcium, iron, and magnesium on the morphology of four desmid species: taxonomic considerations | en |
| dc.type | Thesis | en |
| thesis.degree.discipline | Biology | en |
| thesis.degree.grantor | Texas A&M University | en |
| thesis.degree.name | Doctor of Philosophy | en |
| thesis.degree.level | Doctoral | en |
| dc.contributor.committeeMember | Clark, William | |
| dc.contributor.committeeMember | Fryxell, Paul | |
| dc.contributor.committeeMember | Sweet, Merrill | |
| dc.type.genre | dissertations | en |
| dc.type.material | text | en |
| dc.format.digitalOrigin | reformatted digital | en |
| dc.publisher.digital | Texas A&M University. Libraries |
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