Mark Ellman

Professional Title
Graduate Student

Master's Student

Advisor: Dr. Thomas Hrabik

Education: Saint John's University, Biology, Bachelors in Arts

Specialty area: Ecology

Thesis Research: My research is on causes of winter mortality in young of year fish. Winter is a major time of stress for fish, especially for young of year fish, which have reduced food stores compared to older, larger fish. Starvation, oxygen deprivation, and predation are all possible causes of death in these young fish. I wish to investigate which of these causes are the primary factors in determining the mortality rate of young of year fish. I will be doing diet analysis of the fish to determine their food intake and hopefully determine if they are having a net gain or net loss of energy during the winter.