Dissertation Defense Seminar - Alexandra Good

MARINE BIOLOGY PROGRAM
DEPARTMENT OF LIFE SCIENCES
TEXAS A&M UNIVERSITY-CORPUS CHRISTI

SUBJECT: Reefs At Risk: Conservation Strategies, Species Responses, and Education for Sustainable Coastal Ecosystems

MAJOR ADVISOR: Dr. Keisha Bahr

ABSTRACT

Coastal ecosystems, such as coral and oyster reefs, are critical to biodiversity and coastal resilience but are increasingly threatened by environmental change and human activities. This dissertation examines these challenges through physiological assessments and education-based conservation efforts. Key findings offer novel insights into coral and oyster resilience as well as propose actionable solutions. An extensive literature view was conducted regarding the current challenges with coral reef conservation, highlighting the complex interplay of multiple stressors and the need for effective management frameworks. The metabolic tolerance threshold of Hawaiian reef-building coral Montipora capitata was measured under warming and suspended sediment conditions, revealing that turbidity and temperature strongly influence metabolic responses. Corals from different regions of Kāneʻohe Bay exhibited significant physiological stress, underscoring the importance of region-specific risk assessments. The metabolic tolerance thresholds of genetically distinct Eastern oyster (Crassostrea virginica) populations in South Texas were assessed under variable salinity and temperature stress. Low salinity had the greater impact on metabolic response. In addition to ecological research, this dissertation explores the role of education in marine conservation. A high school biology curriculum integrating hands-on coral reef science was implemented to increase STEM engagement and conservation awareness. Surveys indicated improved coral knowledge along with increased student attitudes toward science and STEM career interest. By integrating physiological, ecological, and educational approaches, this dissertation advances solutions for safeguarding coastal ecosystems. It emphasizes the necessity of region-specific risk assessments and experiential learning to bridge the gap between scientific research, policy, and public engagement.