Jeffrey Polovina (page 50) has been in- 

 terested in Pacific marine life since 1974, 

 when he was twenty-six years old. Fresh 

 out of the University of California at 

 Berkeley with a Ph.D. in mathematical 

 statistics, Polovina decided to spend nine 



months island hopping across the western 

 Pacific, often making the jumps by small 

 boat. His travels ultimately brought him to 

 Hawaii, where, in 1979, he joined the Na- 

 tional Marine Fisheries Service, and was 

 immediately sent on a research cruise to 

 the northwestern islands. With his statisti- 

 cal background, Polovina was well pre- 

 pared to study the population dynamics of 

 the archipelago. He also recognized that 

 the widely separated atolls and reefs of- 

 fered an excellent opporfianity to investi- 

 gate the mechanisms that create biological 

 variation. Polovina has also done research 

 on coral reefs around the Pacific, including 

 a five-year study in the Marianas. In 1993, 

 he was awarded a Fulbright Research 

 Award to study lobster population dynam- 

 ics off the coast of Kenya, and in 1994 he 

 will be heading off to the Antarctic for fur- 

 ther marine studies. He is currentiy chief 

 of insular resource investigations at the 

 Fisheries Service. For further reading, the 

 author recommends D. H. Cushing's book 

 Climate and Fisheries (London: Acade- 

 mic Press, 1982). 



Living in southeastern Idaho on the 

 edge of Yellowstone Park, Michael Quin- 



ton (page 76) doesn't have to go far to find 

 subjects for wildlife photography. A full- 

 time photographer for the past fifteen 

 years, Quinton particularly enjoys taking 

 pictures in winter. While Quinton sees 

 marten tracks, like the ones that led him to 

 this month's "Natural Moment," just about 

 every day in winter, he actually spots the 

 animals only once or twice a year. For 

 these photos, he used a Nikon F3 and a 

 400mm lens with tele-extender. Quinton 



has produced several wildlife books, in- 

 cluding The Ghost 'of the Forest: The 

 Great Gray Owl (Flagstaff: Northland 

 Publishing, 1988), and is currently at work 

 on a project on grizzlies. Quinton, his 

 wife, and their two small children enjoy 

 living in the wilderness; for most of the 

 winter they get around on skis and snow- 

 shoes, and by snowmobiles. Although 

 Yellowstone has provided them with wild- 

 life and winter on a grand scale, the Quin- 

 tons have been thinking of moving on to 

 Alaska. 



Bernd Heinrich (page 42), shown here 

 with his son, Stuart, is a frequent contribu- 

 tor to Natural History. Heinrich 's interest 

 in entomology began at the age of seven, 

 when he started keeping bees and collect- 

 ing insects. He earned his B.S. and M.S. 

 from the University of Maine at Orono 

 and his Ph.D. from the University of Cali- 

 fornia at Los Angeles in 1970. Although 

 his subjects have ranged from squirrels to 

 birds, Heinrich has specialized in studying 

 thermoregulation in insects. Some of his 

 earliest work in this area was on moths, the 

 subject of this month's article. Heinrich 

 has done fieldwork in Africa and various 

 ttopical and arctic locations, but Maine, 

 where he has a cabin in the woods, is his 

 favorite locality. Heinrich has been a pro- 

 fessor of entomology at the University of 

 California at Berkeley and is currently a 

 professor of zoology at the University of 

 Vermont, where he is studying the sociobi- 

 ology of ravens. Further reading on ther- 

 moregulation in moths and other insects 

 can be found in his book The Hot-blooded 

 Insects (Cambridge: Harvard University 

 Press, 1993). 



80 Natural History 2/94 



