People

Faculty Students

Mark Hay
Mark Hay Co-Director, Aquatic Ecology Center, Professor and Harry and Linda Teasley Chair in Environmental Biology
I'm an experimental field ecologist that also investigates the underlying chemical mechanisms generating the patterns I find in the field. Most of our work is focused on tropical coral reefs, but we are also working in freshwater lakes and streams, and sometimes using terrestrial data to test the robustness of general patterns and processes we initially detect in aquatic systems. The majority of our research focuses on plant-herbivore and predator-prey interactions, and on the ecological and evolutionary cascades of indirect effects that are caused by prey chemical defenses. We are also increasing our emphasis on using basic ecological and evolutionary investigations to facilitate management, conservation, and restoration of aquatic systems, with a special emphasis on tropical coral reefs.
mark.hay@biology.gatech.edu 404-894-8429



Julia Kubanek
Julia Kubanek Co-Director, Aquatic Ecology Center, Associate Professor, Schools of Biology and Chemistry & Biochemistry
Chemical ecology; Chemical communication/ chemical signaling; marine natural products chemistry; secondary metabolism; harmful algal blooms; plankton ecology Research in Professor Kubanek's laboratory explores mechanisms of chemical communication and signaling in aquatic environments. Using both chemical and biological experimentation in the laboratory and at field sites around the world, we examine the ecological roles and consequences of plant and animal natural products.
julia.kubanek@biology.gatech.edu 404-894-8424



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Danielle Dixson Assistant Professor, School of Biology
Use of chemical cues in settlement site selection by larvae (fish and coral); Use of chemical cues in predator detection; Effects of ocean acidification on the behavior of marine organisms; Influence of terrestrial systems on the marine environment; Effectiveness of marine protected areas. I have a broad interest in the population, community and behavioral ecology of coral reef fishes. Using a range of laboratory and field experiments I assess the influence sensory cues have on the behavior of coral reef organisms, focusing on the use of chemical cues in settlement site selection by larval fishes and corals.
danielle.dixson@biology.gatech.edu 404-894-8426



Facundo Fernandez
Facundo Fernandez Associate Professor, School of Chemistry & Biochemistry
Bioanalytical Mass Spectrometry: Fundamentals, Instrumentation and Applications Research in the Fernandez Lab focuses on the development of novel bioanalytical mass spectrometric instrumentation and methods to solve complex biomedical and environmental questions. The experiments involve state-of-the-art mass spectrometry, ion mobility spectrometry, new types of ion sources (DART, DESI, AP/MALDI, MEMS, high-speed liquid chromatography, and the mining of the obtained data using chemometric tools such as multivariate calibration, classification and genetic algorithm variable selection.
facundo.fernandez@chemistry.gatech.edu 404-385-4432



Joseph Montoya
Joseph Montoya Professor, School of Biology
The Montoya lab group works at the interface between biological oceanography and biogeochemistry, with a strong focus on the role of nitrogen cycle processes in structuring the flow of biomass and energy through marine ecosystems. My research program is highly interdisciplinary, incorporating work in biological oceanography, marine chemistry, and isotope biogeochemistry on a variety of temporal and spatial scales.
joseph.montoya@biology.gatech.edu 404-385-0479



Terry Snell
Terry Snell Professor and Interim Chair, School of Biology
Chemical ecology of zooplankton; mate recognition; evolutionary ecology; aquatic toxicology; gene expression in response to environmental stress; aquaculture. Professor Terry Snell and his laboratory team are investigating mate recognition in zooplankton and the response of aquatic animals to anthropogenic stress. Research efforts focus on identifying genes that are involved in chemical communication between male and female rotifers and genes that are differentially expressed in aquatic invertebrates upon toxicant exposure.
terry.snell@gatech.edu 404-894-7804



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Frank Stewart Assistant Professor, School of Biology
Genome evolution and ecology of microbial symbioses * functional diversity and gene expression in natural microbial communities * molecular evolution through microbial genomics * marine microbiology. We are particularly interested in how microbial genome evolution and physiology are affected by symbiotic interactions with higher taxa. In tandem with this work, we study free-living microorganisms, as they provide important reference points for understanding symbiont biology and mediate key global biogeochemical cycles in the ocean's water column and sediments.
frank.stewart@biology.gatech.edu 404-385-4440



Don Webster
Don Webster Professor and Associate Chair, School of Civil & Environmental Engineering
Dr. Webster's interests are in experimental fluid mechanics, focusing on environmental flows and on the influence of fluid mechanics on biological systems. Research objectives have been pursued in two basic ways: studying the fluid mechanics and turbulence characteristics of environmental and biological flows; and developing advanced experimental techniques and facilities necessary to conduct the research.
dwebster@ce.gatech.edu 404-894-6704



Howie Weiss
Howie Weiss Professor, School of Math
I work with bioscientists to create mathematical models to study how populations change and how infectious diseases are transmitted through a population. We take a mechanistic, multiscale "systems biology" approach to modeling. As a mathematician, I also analyze the dynamics of such models, always searching for new mathematics (which I frequently find). Current group research projects include modeling the fish biomass structure at coral reefs and studying the how fishing degrades a reef, modeling the transmission of an infectious disease mediated by a water reservoir (e.g., cholera), modeling competition and growth of bacterial colonies on surfaces, and modeling the competition of flu viruses.
weiss@math.gatech.edu 404-894-7804



Mark Weissburg
Marc Weissburg Professor, School of Biology
Chemical ecology: chemically-mediated orientation and guidance in marine invertebrates, behavioral strategies for orientation in relation to fluid flow in aquatic environments, predator-prey and mating behavior mediated by chemical cues. Sensory ecology and physiology: sensory physiology of chemo- and mechanoperception in marine crustaceans, development of chemosensory systems, neuroanatomy of crustacean chemosensory and mechanosensory systems, signal structure and transmission of chemical and fluid mechanical signals.
marc.weissburg@biology.gatech.edu 404-894-8433



Joshua Weitz
Joshua Weitz Assistant Professor, School of Biology
Theoretical ecology; evolutionary ecology of microbial & viral communities; biological networks; vascular plants; scaling laws; disease dynamics; interacting particle systems.
joshua.weitz@biology.gatech.edu 404-385-6169



Jeannette Yen
Jeannette Yen Professor, School of Biology
Small-scale biological-chemical-physical interactions in the plankton, especially the behavior and signal recognition by marine zooplankton: fluid physics of signal structure, neurophysiological basis of signal detection, consequences on feeding ecology, functional morphology, biochemical composition, and reproductive strategies - of marine plankton, especially copepods, from tropical to polar oceanic regions. My research in biological oceanography and zooplankton ecology investigates signal recognition by planktonic copepods in a transitional fluid regime and their capability for three-dimensional information processing. I am interested in determining how these aquatic microcrustaceans are able to discriminate biological signals from background small-scale turbulent fluid flow.
jeannette.yen@biology.gatech.edu 404-894-8433



Students