The effect of light intensity on the incorporation of calcium carbonate into the algal skeleton inBossiala orbigniana (Descaisne) Silva (1957) (Corallinaceae) was studied. Calcium-45 labeling of terminal segments under experimental laboratory conditions was used to estimate calcification rate. Plant sections were tested under each of six light intensities ranging between zero (darkness) and 1960 pW-2cm Calcium incorporation was found to be enhanced in light treatments as compared with dark treatment. Light of intensities ranging from 285 pW cm-2 to 1960 pW cm-2gave enhancement effects which were not significantly different from each other. Three alternate hypotheses are offered to explain the observed pattern of enhancement. The most likely hypothesis postulates that under the experimental conditions used, light is not limiting to calcium carbonate deposition in the carbonate skeleton of Bossiala orbigniana.
","abstract_html":"<p>The effect of light intensity on the incorporation of calcium carbonate into the algal skeleton in<em>Bossiala orbigniana </em>(Descaisne) Silva (1957) (Corallinaceae) was studied. Calcium-45 labeling of terminal segments under experimental laboratory conditions was used to estimate calcification rate. Plant sections were tested under each of six light intensities ranging between zero (darkness) and 1960 pW<sup>-2</sup>cm Calcium incorporation was found to be enhanced in light treatments as compared with dark treatment. Light of intensities ranging from 285 pW cm<sup>-2</sup> to 1960 pW cm<sup>-2</sup>gave enhancement effects which were not significantly different from each other. Three alternate hypotheses are offered to explain the observed pattern of enhancement. The most likely hypothesis postulates that under the experimental conditions used, light is not limiting to calcium carbonate deposition in the carbonate skeleton of <em>Bossiala orbigniana.</em></p>","abstract_has_math":false,"creators":["Logan, Carol D."],"institution":null,"degree_name":"Master of Arts (MA)","degree_level":"Thesis","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Ariel A. Roth","Conrad D. Clausen","Clyde L. Webster"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1980,"date_issued":"1980-06-01T07:00:00Z","date_published":"1980-06-01T07:00:00Z","updated_at":"2026-07-24T02:53:08Z","subjects":["Biology","Plant Sciences","Plants, Effect of calcium on Photochemistry"],"languages":["English"],"rights":["This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarsrepository.llu.edu/etd/727","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ariel A. Roth","Conrad D. Clausen","Clyde L. Webster"]},{"key":"dc:creator","label":"Author","values":["Logan, Carol D."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Arts (MA)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biology","Plant Sciences","Plants, Effect of calcium on Photochemistry"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarsrepository.llu.edu/etd/727"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The effect of light intensity on the incorporation of calcium carbonate into the algal skeleton inBossiala orbigniana (Descaisne) Silva (1957) (Corallinaceae) was studied. Calcium-45 labeling of terminal segments under experimental laboratory conditions was used to estimate calcification rate. Plant sections were tested under each of six light intensities ranging between zero (darkness) and 1960 pW-2cm Calcium incorporation was found to be enhanced in light treatments as compared with dark treatment. Light of intensities ranging from 285 pW cm-2 to 1960 pW cm-2gave enhancement effects which were not significantly different from each other. Three alternate hypotheses are offered to explain the observed pattern of enhancement. The most likely hypothesis postulates that under the experimental conditions used, light is not limiting to calcium carbonate deposition in the carbonate skeleton of Bossiala orbigniana.
"]},{"key":"dc:title","label":"Title","values":["The Effect of Light Intensity on the Incorporation of Calcium into the Carbonate Skeleton in BOSSIELLA ORBIGNIANIA"]}]}],"canonical_facts":{"dc:contributor":["Ariel A. Roth","Conrad D. Clausen","Clyde L. Webster"],"dc:creator":["Logan, Carol D."],"dc:description.abstract":["The effect of light intensity on the incorporation of calcium carbonate into the algal skeleton inBossiala orbigniana (Descaisne) Silva (1957) (Corallinaceae) was studied. Calcium-45 labeling of terminal segments under experimental laboratory conditions was used to estimate calcification rate. Plant sections were tested under each of six light intensities ranging between zero (darkness) and 1960 pW-2cm Calcium incorporation was found to be enhanced in light treatments as compared with dark treatment. Light of intensities ranging from 285 pW cm-2 to 1960 pW cm-2gave enhancement effects which were not significantly different from each other. Three alternate hypotheses are offered to explain the observed pattern of enhancement. The most likely hypothesis postulates that under the experimental conditions used, light is not limiting to calcium carbonate deposition in the carbonate skeleton of Bossiala orbigniana.
"],"dc:identifier":["https://scholarsrepository.llu.edu/etd/727"],"dc:language":["English"],"dc:rights":["This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights."],"dc:subject":["Biology","Plant Sciences","Plants, Effect of calcium on Photochemistry"],"dc:title":["The Effect of Light Intensity on the Incorporation of Calcium into the Carbonate Skeleton in BOSSIELLA ORBIGNIANIA"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Arts (MA)"]},"updated_at":"2026-07-24T02:53:08Z"}