United Slates of America 235 



POTAMOLO&ICAL INSTITUTE. UNIVERSITY OF LOUISVITTE 



important species available for laboratory 

 studies: 

 Large population of cave fauna, including Chologaster 

 agassizi. 



MAJOR CURRENT RESEARCH PROJECTS AND SCIENTIFIC 

 LEADERS: 



Surveillance of aquatic life resources of the Ohio River 



(William M. Clay) 

 Phytoplankton ecology in the Ohio River (D. F. 



Jackson) 

 Radiation ecology of the Ohio River (A. T. Krebs) 

 Taxonomy and distribution of the fishes of Kentucky 



(William M. Clay) 

 Ecology of phytoplankton blooms (D. F. Jackson) 



Pyniatiming Laboratory of Field Biology 



POSTAL address: Linesville, Pennsylvania, USA. 



EXECUTIVE officer: Dr. C. A. Tryon, Jr., Professor of 

 Zoology, University of Pittsburgh, Pittsburgh 13, 

 Pennsylvania. 



SPONSORING agency: University of Pittsburgh. 



year founded: 1949 (continuation of Lake Labora- 

 tory founded 1926.) 



scope of ACTIVITIES: Unrestricted research on aquatic 

 and terrestrial ecology with emphasis on algae, physical 

 and chemical limnology, aquatic insects, and vertebrate 

 ecology ; graduate and undergraduate instruction. 



SEASON OF operation: All year for research; May 1 

 to September 1 for instruction. 



PHYSICAL environment ACCESSIBLE: Pymatuning 



Reservoir (eutrophic lake), Ohio River; swamps, 

 marshes, small ponds, and lakes. 

 PROVISIONS FOR VISITING SCIENTISTS: Research and liv- 

 ing space for 5 visitors; variable fees charged for re- 

 search space. 



MAJOR RESEARCH AND TEACHING FACILITIES: Small 



library; small aquarium tanks; limited research collec- 

 tion of local fish; machine and wood shop; small boats 

 and outboard motors; 28 ft LOA vessel on Ohio River. 



INSTRUCTIONAL PROGRAM: Limnology, aquatic plant 

 ecology, vertebrate ecology, and invertebrate ecology. 

 Students specialize within these topics. 



SIZE OF STAFF: Four at professional level; 1 technician. 



MAJOR CURRENT RESEARCH PROJECTS AND SCIENTIFIC 

 LEADERS: 



Primary nitrogen fixation in natural waters (R. C. 



Dugdale) 

 Ecologic potential of the Ohio River (C. A. Tryon) 

 Invertebrate succession in streams and pools (E. J. 



Kormondy) 

 Ecology of algae (R. T. Hartman) 



PYMATUNING LABORATORY OF FIELD BIOLOGY (LOCATED 

 ON WOODED POINT IN LEFT MIDDLEGROUNd) 



Quetico-Superior W^ilderness Research Center 



POSTAL address: Box 479, Ely, Minnesota, USA. 

 W'^ inter address: 215 West Oxford Street Duluth 3, 

 Minnesota. 



LOCATION: Near Duluth. 



EXECUTIVE OFFICER: Cliflford E. Ahlgren, Director. 



SPONSORING AGENCY: Wilderness Research Founda- 

 tion. 



YEAR founded: 1948. 



SCOPE of ACTIVITIES: Unrestricted research on ecology 

 of Quetico-Superior- Wilderness area, including fresh- 

 water biology. 



SEASON OF OPERATION: May 15 through September 15. 



PHYSICAL ENVIRONMENT ACCESSIBLE: EutrOphic and 



oligotrophic lakes, rivers and streams. Station located 

 on Basswood Lake. 

 PROVISIONS FOR VISITING SCIENTISTS: Research and liv- 



