{"id":{"repo_id":"baylor","oai_identifier":"oai:baylor-ir.tdl.org:2104/10028"},"canonical_url":"https://search.dev.ndltd.org/etd/baylor/oai:baylor-ir.tdl.org:2104/10028","repository":{"repo_id":"baylor","name":"Baylor University","base_url":"https://baylor-ir.tdl.org/server/oai/request"},"display":{"title":"Understanding key factors influencing habitat quality for the endangered fountain darter (Etheostoma fonticola) in the Comal River.","abstract":"The research in this thesis was divided into 3 main studies that took place in Landa Lake: water column, sediment, and plant nutrient analyses, an herbivory and soil fertility experiment, and a spatial study of diel dissolved oxygen dynamics. Nutrient data were collected via water samples, nutrient diffusing substrata (NDS), sediment cores, and plant samples. The water samples and NDS results indicated a severe phosphorus limitation in the water column and some macrophyte species may be limited by phosphorus as well. Herbivory in Landa Lake, particularly by crayfish, appears to be much more severe than previously thought and increased soil fertility exacerbates the issue in Ludwigia repens. Diel dissolved oxygen varied across the lake, largely correlated with flow conditions. During drought, there may be several areas of the lake where DO is low enough to threaten fountain darter survival, but there is little cause for concern under current conditions.","abstract_html":"The research in this thesis was divided into 3 main studies that took place in Landa Lake: water column, sediment, and plant nutrient analyses, an herbivory and soil fertility experiment, and a spatial study of diel dissolved oxygen dynamics. Nutrient data were collected via water samples, nutrient diffusing substrata (NDS), sediment cores, and plant samples. The water samples and NDS results indicated a severe phosphorus limitation in the water column and some macrophyte species may be limited by phosphorus as well. Herbivory in Landa Lake, particularly by crayfish, appears to be much more severe than previously thought and increased soil fertility exacerbates the issue in Ludwigia repens. Diel dissolved oxygen varied across the lake, largely correlated with flow conditions. During drought, there may be several areas of the lake where DO is low enough to threaten fountain darter survival, but there is little cause for concern under current conditions.","abstract_has_math":false,"creators":["Biles, Kelsey S., 1994-"],"institution":"Baylor University.","degree_name":"M.S.","degree_level":"Masters","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Doyle, Robert D. (Robert Donald)"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-05","date_published":"2017-05","updated_at":"2026-07-24T01:08:07Z","subjects":["Ecology.","Aquatic botany.","Herbivory.","Fountain darter.","Crayfish.","Ludwigia.","Dissolved oxygen.","Nutrient diffusion.","Comal River.","Landa Lake."],"languages":["en"],"rights":["Baylor University works are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact libraryquestions@baylor.edu for inquiries about permission."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2104/10028","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Doyle, Robert D. 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They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact libraryquestions@baylor.edu for inquiries about permission."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/2104/10028"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The research in this thesis was divided into 3 main studies that took place in Landa Lake: water column, sediment, and plant nutrient analyses, an herbivory and soil fertility experiment, and a spatial study of diel dissolved oxygen dynamics. Nutrient data were collected via water samples, nutrient diffusing substrata (NDS), sediment cores, and plant samples. The water samples and NDS results indicated a severe phosphorus limitation in the water column and some macrophyte species may be limited by phosphorus as well. Herbivory in Landa Lake, particularly by crayfish, appears to be much more severe than previously thought and increased soil fertility exacerbates the issue in Ludwigia repens. Diel dissolved oxygen varied across the lake, largely correlated with flow conditions. During drought, there may be several areas of the lake where DO is low enough to threaten fountain darter survival, but there is little cause for concern under current conditions."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Understanding key factors influencing habitat quality for the endangered fountain darter (Etheostoma fonticola) in the Comal River."]}]}],"canonical_facts":{"dc:contributor.advisor":["Doyle, Robert D. (Robert Donald)"],"dc:creator":["Biles, Kelsey S., 1994-"],"dc:date.accessioned":["2017-06-05T12:40:47Z"],"dc:date.available":["2017-06-05T12:40:47Z"],"dc:date.issued":["2017-05"],"dc:description.abstract":["The research in this thesis was divided into 3 main studies that took place in Landa Lake: water column, sediment, and plant nutrient analyses, an herbivory and soil fertility experiment, and a spatial study of diel dissolved oxygen dynamics. Nutrient data were collected via water samples, nutrient diffusing substrata (NDS), sediment cores, and plant samples. The water samples and NDS results indicated a severe phosphorus limitation in the water column and some macrophyte species may be limited by phosphorus as well. Herbivory in Landa Lake, particularly by crayfish, appears to be much more severe than previously thought and increased soil fertility exacerbates the issue in Ludwigia repens. Diel dissolved oxygen varied across the lake, largely correlated with flow conditions. During drought, there may be several areas of the lake where DO is low enough to threaten fountain darter survival, but there is little cause for concern under current conditions."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/2104/10028"],"dc:language.iso":["en"],"dc:rights":["Baylor University works are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact libraryquestions@baylor.edu for inquiries about permission."],"dc:subject":["Ecology.","Aquatic botany.","Herbivory.","Fountain darter.","Crayfish.","Ludwigia.","Dissolved oxygen.","Nutrient diffusion.","Comal River.","Landa Lake."],"dc:title":["Understanding key factors influencing habitat quality for the endangered fountain darter (Etheostoma fonticola) in the Comal River."],"dc:type":["Thesis"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.S."],"thesis:institution_name":["Baylor University."]},"updated_at":"2026-07-24T01:08:07Z"}