This evening (Thursday March 1, 7 pm, 112 PSN) Dennis Whigham, Senior 
Scientist at the Smithsonian Environmental Research Center, will 
lecture on "Linking land-use to ecological conditions in Chesapeake 
Bay: evidence for the pervasive impacts of watershed 
development."   This is the annual Roger E. Wilson Lecture in Ecology 
hosted by the Botany Department.  Dr. Whigham is a plant ecologist 
with extensive research experience in wetland and forest 
ecology.  The public is invited to this Lecture, which will describe 
a multi-disciplinary study of how land-use and development has 
affected the water quality and fisheries of the Chesapeake Bay, and 
how wetland restoration can be used to enhance biodiversity and 
improve water quality.  A reception will follow the Lecture.

Dr. Whigham will also give the Botany Department seminar on Friday, 
March 2, in 218 PSN, entitled, "Interactions between terrestrial 
orchids and mycorrhizal fungi: complexities at varying 
scales."   Another reception will be held at the home of David 
Gorchov and Vivian Negron, 101 Peabody Drive, 7-9 pm Fri.March 2