The purpose of this study was to compare the variations in nitrate concentration in the surface waters of five different watershed community types at Cuyamaca Rancho State Park. Monthly water samples were collected at selected sites below each watershed and analyzed by use of a specific ion electrode for nitrate concentration. Results indicate that variations in nitrate concentration are influenced by seasonal variation in rainfall. The yellow pine forest/chaparral watershed showed the highest mean nitrate concentration, three to four times higher than the other watershed types analyzed. Peak nitrate concentrations did not approach the maximum safe limit for human or animal consumption. The data presented here should serve as an adequate baseline for monitoring variations in nitrate concentration in surface waters at Cuyamaca Rancho State Park after prescribed burning in any of the five watershed types analyzed.
","abstract_html":"<p>The purpose of this study was to compare the variations in nitrate concentration in the surface waters of five different watershed community types at Cuyamaca Rancho State Park. Monthly water samples were collected at selected sites below each watershed and analyzed by use of a specific ion electrode for nitrate concentration. Results indicate that variations in nitrate concentration are influenced by seasonal variation in rainfall. The yellow pine forest/chaparral watershed showed the highest mean nitrate concentration, three to four times higher than the other watershed types analyzed. Peak nitrate concentrations did not approach the maximum safe limit for human or animal consumption. The data presented here should serve as an adequate baseline for monitoring variations in nitrate concentration in surface waters at Cuyamaca Rancho State Park after prescribed burning in any of the five watershed types analyzed.</p>","abstract_has_math":false,"creators":["Harris, Lester E., III"],"institution":null,"degree_name":"Master of Arts (MA)","degree_level":"Thesis","degree_discipline":"Biology","degree_department":null,"school":null,"contributors":["Earl W. Lathrop","Leonard R. Brand","George E. Johnston"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1983,"date_issued":"1983-06-01T07:00:00Z","date_published":"1983-06-01T07:00:00Z","updated_at":"2026-07-24T02:52:52Z","subjects":["Biology","Environmental Sciences","Water Resource Management","Water -- Nitrogen content; Watershed management -- California -- San Diego County"],"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/1109","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Earl W. Lathrop","Leonard R. Brand","George E. Johnston"]},{"key":"dc:creator","label":"Author","values":["Harris, Lester E., III"]}]},{"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","Environmental Sciences","Water Resource Management","Water -- Nitrogen content; Watershed management -- California -- San Diego County"]}]},{"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/1109"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The purpose of this study was to compare the variations in nitrate concentration in the surface waters of five different watershed community types at Cuyamaca Rancho State Park. Monthly water samples were collected at selected sites below each watershed and analyzed by use of a specific ion electrode for nitrate concentration. Results indicate that variations in nitrate concentration are influenced by seasonal variation in rainfall. The yellow pine forest/chaparral watershed showed the highest mean nitrate concentration, three to four times higher than the other watershed types analyzed. Peak nitrate concentrations did not approach the maximum safe limit for human or animal consumption. The data presented here should serve as an adequate baseline for monitoring variations in nitrate concentration in surface waters at Cuyamaca Rancho State Park after prescribed burning in any of the five watershed types analyzed.
"]},{"key":"dc:title","label":"Title","values":["Baseline Study for Monitoring Variations in Nitrate Concentration in Surface Waters of Cuyamaca Rancho State Park in Relation to Watershed Types"]}]}],"canonical_facts":{"dc:contributor":["Earl W. Lathrop","Leonard R. Brand","George E. Johnston"],"dc:creator":["Harris, Lester E., III"],"dc:description.abstract":["The purpose of this study was to compare the variations in nitrate concentration in the surface waters of five different watershed community types at Cuyamaca Rancho State Park. Monthly water samples were collected at selected sites below each watershed and analyzed by use of a specific ion electrode for nitrate concentration. Results indicate that variations in nitrate concentration are influenced by seasonal variation in rainfall. The yellow pine forest/chaparral watershed showed the highest mean nitrate concentration, three to four times higher than the other watershed types analyzed. Peak nitrate concentrations did not approach the maximum safe limit for human or animal consumption. The data presented here should serve as an adequate baseline for monitoring variations in nitrate concentration in surface waters at Cuyamaca Rancho State Park after prescribed burning in any of the five watershed types analyzed.
"],"dc:identifier":["https://scholarsrepository.llu.edu/etd/1109"],"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","Environmental Sciences","Water Resource Management","Water -- Nitrogen content; Watershed management -- California -- San Diego County"],"dc:title":["Baseline Study for Monitoring Variations in Nitrate Concentration in Surface Waters of Cuyamaca Rancho State Park in Relation to Watershed Types"],"thesis:degree_discipline":["Biology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Arts (MA)"]},"updated_at":"2026-07-24T02:52:52Z"}