Richard Everett, Postdoctoral Fellow, University of California, Berkeley. 

 "Distribution Abundance, and Population Structure of Grass Shrimp, 

 Palaemonetes puqio in Nearshore Habitats of Chesapeake Bay: The 

 Importance of Predatory Fish," with Gregory Ruiz, from September 1, 1990 

 to August 31, 1991. 



Grace Ju, Postdoctoral Fellow, Purdue University. "A Model System for 



Studying the Role of Glycinebetaine and Glutamate Dehydrogenase in 

 Nitrogen Productivity Under Salt Stress Environments," with Bert Drake, 

 from August 15, 1990 to August 14, 1991. 



David W. Lawlor, Senior Postdoctoral Fellow, University of London. "Effects 

 of Elevated Carbon Dioxide on the Structure, Composition, and 

 Photosynthetic Function of Scirpus in a Salt Marsh Community, " with Bert 

 Drake, from April 1 to October 31, 1990. 



Junda Lin, Postdoctoral Fellow, University of North Carolina, Chapel Hill. 

 "Complex Interactions Among Competition, Predation, and Substrate 

 Composition," with Anson Hines, from August 15, 1990 to February 14, 

 1991. 



Daniel K. Niven, Graduate Student Fellow, University of Illinois. "Sexual 



Segregation and Habitat Use in a Neotropical Avian Migrant," with James 

 Lynch, from May 14 to July 23, 1990. 



L. David Smith, Postdoctoral Fellow, University of Maryland. "Sexual 



Selection and Mating System of the Blue Crab, Callinectes sapidus 

 Rathbun," with Anson Hines, from September 1, 1990 to December 31, 1991. 



Panchabi Vaithiyanathan, Postdoctoral Fellow, Jawaharlal Nehru University, 



India. "Factors in Controlling the Release of Phosphorus from Sediments 

 in the Estuarine Region," with David Correll, from September 1, 1990 to 

 August 31, 1991. 



Zhigang Wang, Postdoctoral Fellow, University of Cambridge. "Population 



Ecology of Epifaqus virqiniana ," with Dennis Whigham, from October 1, 



1989 to September 30, 1990. 



Jess K. Zimmerman, Postdoctoral Fellow, University of Utah. "The Resource 

 Economy of Uvularia perfoliata ," with Dennis Whigham, from August 1, 



1990 to July 31, 1991. 



SMITHSONIAN TROPICAL RESEARCH INSTITUTE 



T. Mitchell Aide, Postdoctoral Fellow, University of Utah. "Late Pleistocene 

 Origin of the Central American Flora," with Dolores Piperno, from 

 January 1 to June 30, 1990. 



Gerald Allen, Visiting Scientist, University of Hawaii. "An Identification 

 Guide to the Fishes of the Tropical Eastern Pacific," with Ross 

 Robertson, from March 1 to June 30, 1990. 



Parthiba Basu, Short-Term Fellow, Pondicherry University. "Distribution of 

 Ants in Different Island in the Gatun Lake," with Joseph Wright, from 

 August 18, 1990. 



60 



