Most graduate students and postdoctoral researchers in the lab develop their own projects separately from Kathy’s work. Here is a sampling of some of the ongoing projects:
- Determining the effects of road salt on freshwater lakes.
Postdoctoral researcher Jennie Brentrup and undergraduate Alexandra Conway ’20 conducted a field mesocosm experiment to study how increased salinity impacts the structure of freshwater zooplankton communities. Jennie is also working with David Lutz in Environmental Studies and undergraduate Rafa Rosas ’20 to build low-cost conductivity data logging stations that can be deployed year-round to track pulses in salt concentration following wintertime rain-on-snow events and during spring snowmelt.
- Evaluating how thermal environments affect the performance of individual organisms and populations.
Grad student Keith Fritschie has established a research program to understand how stream temperatures — as influenced by groundwater inputs — impact the very early life history of native brook trout in the streams of Vermont and New Hampshire. See Keith’s website for more details.
- Determining how methylmercury exposure alters the physiology and behavior of stream crayfish populations.
Studies of the effects of methylmercury on invertebrate neurobiology and physiology are still in their infancy, and Andrew Vacca sought to fill that gap in his first dissertation chapter. Surprisingly, Andy found no effects of dietary methylmercury in crayfish growth, survival, or predator avoidance behaviors. See Andy’s website for more details.
- Investigating the landscape limnology of Greenlandic lakes and ponds.
Former graduate student Jess Trout-Haney spent at least a month each summer collecting data and samples to address three key questions: (1) What is the distribution, abundance, and ecological importance of colonial Nostoc cyanobacteria in lakes? (2) Are cyanobacteria in these waters toxic and, if so, in which food web compartments are they found and are there landscape- or lake-specific factors that contribute to observed toxicity? (3) Are cyanotoxins passed into other aquatic organisms or even onto land? See one of the news stories about Jess’s work for more details, or her first publication (it’s open access).