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Monday, January 14, 2019 3:00 pm - 3:00 pm EST (GMT -05:00)

Department Seminar: Dr. James O. Knighton

Building an Understanding of Ecohydrologic Process through Model-Data Fusion

Dr. James O. Knighton​
Biological & Environmental Engineering, Cornell University

Recent advances in ecohydrology have been facilitated by the parallel emergence of ecohydrological models, high resolution hydrologic datasets, and data analytic techniques. In this talk I will first examine the hypothesis of ecohydrological separation (i.e. the Two Water Worlds Hypothesis) from the perspective of physically-based models and high frequency soil water isotopic measurements along a hillslope.

Friday, January 18, 2019 10:00 am - 10:00 am EST (GMT -05:00)

Department Seminar: Dr. Daniel Colman

Defining the Intersection of Geology, Geochemistry and Microbiology in Hydrothermal Environments

Dr. Daniel Colman
Department of Microbiology and Immunology, Montana State University

Hydrothermal systems provide excellent model systems to deconvolute the dynamic interplay between geology and geochemistry and the ecology and evolution of microorganisms. Extensive geochemical variation exists in hydrothermal systems that sets the stage for an incredible amount of microbial taxonomic and functional biodiversity. Further, microorganisms inhabiting hydrothermal systems can have profound roles in shaping the geochemistry of their environments through geo-biological feedbacks resulting from biological transformations of inorganic and organic chemical constituents.

Friday, January 25, 2019 10:00 am - 10:00 am EST (GMT -05:00)

Department Seminar: Dr. Jacqueline Goordial

Vital signs in the low energy microbial world: linking physiology to ecosystem function

Dr. Jacqueline Goordial
Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine

Microorganisms are the most diverse and abundant lifeforms on Earth, but less than 1% have been cultured in the laboratory for study. Thus, our knowledge of the metabolic potential of the vast majority of microorganisms is based primarily on genomic and metagenomic sequencing. Compounding these unknowns is evidence that bacteria commonly exist in prolonged states of low metabolic activity or non-growth states in environmental settings. This gap in our knowledge necessitates uniting physiology and molecular microbiology to understand the roles that bacterial communities play in biogeochemical cycling and ecosystem function.

Wednesday, February 13, 2019 1:00 pm - 1:00 pm EST (GMT -05:00)

MSc Defence: Maria Digaletos

Integration of Active and Passive Sampling Techniques for Characterization of Non-Point Source Contamination from Septic Systems in rural Ontario Hamlets