{"id":{"repo_id":"mo-state","oai_identifier":"oai:bearworks.missouristate.edu:theses-2303"},"canonical_url":"https://search.dev.ndltd.org/etd/mo-state/oai:bearworks.missouristate.edu:theses-2303","repository":{"repo_id":"mo-state","name":"Missouri State University","base_url":"https://bearworks.missouristate.edu/do/oai/"},"display":{"title":"Cyanobacteria Abundance and Toxin Production in a Drinking Water Supply Reservoir","abstract":"Cyanobacteria are prokaryotic organisms that live in marine and freshwater environments and are most common during the warmer months. Many cyanobacteria are also known to release toxins that target cellular processes and affect a wide range of organisms, including people. Although the effects of toxins on biodiversity have been documented, the main reason why cyanobacteria release their toxins is still unknown. This study examined the co-occurrence of cyanobacteria densities and hepatotoxin concentrations in a local drinking water reservoir. McDaniel Lake is a man-made reservoir located about 7 km north of Springfield, Missouri, and is used as a source of drinking water for the city. Two sites in McDaniel Lake (up-lake and near the dam) were sampled weekly on 26 dates from May 23 – September 16, 2011, to determine algal composition, particularly of cyanobacteria, and their corresponding densities over time. The presence and concentration of hepatotoxins were also measured using enzyme-linked immunosorbant assay (ELISA) kits. Over the period of the study, cyanobacteria density ranged from 0.04 - 3.3 x 104 units/mL and an invasive species (Cylindrospermopsis sp.) was detected. Despite occasional high concentrations of cyanobacteria and detectable taste and odor compounds, hepatotoxins were not detected on any date at either site.","abstract_html":"Cyanobacteria are prokaryotic organisms that live in marine and freshwater environments and are most common during the warmer months. Many cyanobacteria are also known to release toxins that target cellular processes and affect a wide range of organisms, including people. Although the effects of toxins on biodiversity have been documented, the main reason why cyanobacteria release their toxins is still unknown. This study examined the co-occurrence of cyanobacteria densities and hepatotoxin concentrations in a local drinking water reservoir. McDaniel Lake is a man-made reservoir located about 7 km north of Springfield, Missouri, and is used as a source of drinking water for the city. Two sites in McDaniel Lake (up-lake and near the dam) were sampled weekly on 26 dates from May 23 – September 16, 2011, to determine algal composition, particularly of cyanobacteria, and their corresponding densities over time. The presence and concentration of hepatotoxins were also measured using enzyme-linked immunosorbant assay (ELISA) kits. Over the period of the study, cyanobacteria density ranged from 0.04 - 3.3 x 104 units/mL and an invasive species (Cylindrospermopsis sp.) was detected. Despite occasional high concentrations of cyanobacteria and detectable taste and odor compounds, hepatotoxins were not detected on any date at either site.","abstract_has_math":false,"creators":["Reynolds, Kari Elyse"],"institution":null,"degree_name":"Master of Science in Biology","degree_level":"Masters","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["John Havel"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-07-01T07:00:00Z","date_published":"2012-07-01T07:00:00Z","updated_at":"2026-07-24T03:16:17Z","subjects":["blue-green algae","cyanotoxin","McDaniel Lake","cyanobacteria","microcystin","cylindrospermopsin","Biology"],"languages":[],"rights":["© Kari Elyse Reynolds"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://bearworks.missouristate.edu/theses/1302","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["John Havel"]},{"key":"dc:creator","label":"Author","values":["Reynolds, Kari Elyse"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Biology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["blue-green algae","cyanotoxin","McDaniel Lake","cyanobacteria","microcystin","cylindrospermopsin","Biology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["© Kari Elyse Reynolds"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://bearworks.missouristate.edu/theses/1302"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Cyanobacteria are prokaryotic organisms that live in marine and freshwater environments and are most common during the warmer months. Many cyanobacteria are also known to release toxins that target cellular processes and affect a wide range of organisms, including people. Although the effects of toxins on biodiversity have been documented, the main reason why cyanobacteria release their toxins is still unknown. This study examined the co-occurrence of cyanobacteria densities and hepatotoxin concentrations in a local drinking water reservoir. McDaniel Lake is a man-made reservoir located about 7 km north of Springfield, Missouri, and is used as a source of drinking water for the city. Two sites in McDaniel Lake (up-lake and near the dam) were sampled weekly on 26 dates from May 23 – September 16, 2011, to determine algal composition, particularly of cyanobacteria, and their corresponding densities over time. The presence and concentration of hepatotoxins were also measured using enzyme-linked immunosorbant assay (ELISA) kits. Over the period of the study, cyanobacteria density ranged from 0.04 - 3.3 x 104 units/mL and an invasive species (Cylindrospermopsis sp.) was detected. Despite occasional high concentrations of cyanobacteria and detectable taste and odor compounds, hepatotoxins were not detected on any date at either site."]},{"key":"dc:title","label":"Title","values":["Cyanobacteria Abundance and Toxin Production in a Drinking Water Supply Reservoir"]}]}],"canonical_facts":{"dc:contributor":["John Havel"],"dc:creator":["Reynolds, Kari Elyse"],"dc:description.abstract":["Cyanobacteria are prokaryotic organisms that live in marine and freshwater environments and are most common during the warmer months. Many cyanobacteria are also known to release toxins that target cellular processes and affect a wide range of organisms, including people. Although the effects of toxins on biodiversity have been documented, the main reason why cyanobacteria release their toxins is still unknown. This study examined the co-occurrence of cyanobacteria densities and hepatotoxin concentrations in a local drinking water reservoir. McDaniel Lake is a man-made reservoir located about 7 km north of Springfield, Missouri, and is used as a source of drinking water for the city. Two sites in McDaniel Lake (up-lake and near the dam) were sampled weekly on 26 dates from May 23 – September 16, 2011, to determine algal composition, particularly of cyanobacteria, and their corresponding densities over time. The presence and concentration of hepatotoxins were also measured using enzyme-linked immunosorbant assay (ELISA) kits. Over the period of the study, cyanobacteria density ranged from 0.04 - 3.3 x 104 units/mL and an invasive species (Cylindrospermopsis sp.) was detected. Despite occasional high concentrations of cyanobacteria and detectable taste and odor compounds, hepatotoxins were not detected on any date at either site."],"dc:identifier":["https://bearworks.missouristate.edu/theses/1302"],"dc:rights":["© Kari Elyse Reynolds"],"dc:subject":["blue-green algae","cyanotoxin","McDaniel Lake","cyanobacteria","microcystin","cylindrospermopsin","Biology"],"dc:title":["Cyanobacteria Abundance and Toxin Production in a Drinking Water Supply Reservoir"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science in Biology"]},"updated_at":"2026-07-24T03:16:17Z"}