Mark E. Warner

Mark E. Warner is a full Professor in the School of Marine Science & Policy at the University of Delaware’s College of Earth, Ocean & Environment. Based at the Lewes campus, he leads research bridging coral physiology, phytoplankton ecology, and climate-change impacts on marine symbioses.

Education

• Ph.D., Ecology, University of Georgia, 1998
• East-West Marine Biology Program, Northeastern University, 1991
• B.S., Zoology, University of Georgia, 1992

Research Interests

Professor Warner’s work centers on physiological ecology of phytoplankton and reef-building corals, with particular emphasis on algal–invertebrate symbioses. His laboratory investigates how temperature stress, ocean acidification, and nutrient regimes modulate the fitness of both Symbiodiniaceae (zooxanthellae) and their cnidarian hosts. A major thrust is understanding thermotolerance mechanisms that underpin coral resilience in a warming ocean, employing techniques from bio-optical fluorometry to stable-isotope probing.

Additional foci include the ecology of harmful algal blooms, where he examines how dinoflagellate growth, toxicity, and fatty-acid profiles respond to multifactorial environmental change, and the development of low-cost, field-deployable instrumentation (e.g., CBASS) for standardized coral-stress diagnostics.

Publication Trends

Across the most recent 15 publications (2023-2025), the work spans coral bleaching physiology, symbiont diversity, thermal tolerance, and technology innovation. Themes include zooxanthellae–host fidelity, nutrient-transfer efficiency under heat stress, and portable bio-optical tools for reef monitoring, reflecting a trajectory from cellular mechanisms to ecosystem-scale applications.

Scientific Awards

No awards are explicitly listed in the provided text.

Advising & Grants

No specific student names or grant numbers were found in the supplied materials.

Laboratory & Teams

Professor Warner directs an active research group within the College of Earth, Ocean & Environment at the University of Delaware’s Lewes campus, housed in Cannon Laboratory (Room 232). The lab collaborates closely with the marine operations and instrumentation teams to advance coral-reef science and phytoplankton ecology.