Beginning with tree swallows in the

Shenandoah Valley of Virginia,

 

 

 

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                                                                       migrating to penguins in Antarctica,

 

 

 

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taking a side quest to investigate

lead contamination in songbirds in

southeast Missouri,

 

 

 

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                                                                     and now focusing on invertebrates of the

Great Salt Lake, I have studied heavy metal

contamination across many ecosystems. 

 

 

 

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Though geographically and taxonomically variable, a central theme of my research has been investigating the trophic transfer of aquatic mercury to terrestrial food webs.