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Guest lecturer connects arctic bird coloration to climate change


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Posted Online: April 18, 2011, 1:36 pm
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Press release submitted by Augustana College

Rock Island, Ill. –Dr. Jeff Johnson will discuss the effects of climate change on the arctic animal kingdom on Thursday, April 28, at 7 p.m. in the John Deere Planetarium Auditorium (820 38th St.). The Center for Polar Studies lecture, entitled "Adaptive Significance of White Plumage Color in High Arctic Gyrfalcons," is free and open to the public.

Dr. Johnson's research involves studying color differences among gyrfalcons living in the world's arctic and sub-Antarctic regions. Color variations within species often have a strong genetic component, so studying the differences can provide important clues about how the species has evolved over time. By understanding the genetics behind physical traits like feather color, scientists can predict how climate change might affect arctic animals in other ways in the future.

"An important question in the debate on the ecological effects of climate change is whether species will be able to adapt fast enough to keep up with their changing environment," said Dr. Johnson. "Knowing the evolutionary processes that had led to the current gyrfalcon distribution will help us predict how the species may respond to challenges in the future."

He holds an M.S. in zoology from North Carolina State University and a Ph.D. in biology from the University of Wisconsin-Milwaukee. Currently, Dr. Johnson works as an assistant professor of biological sciences at the University of North Texas, where he is part of the sub-Antarctic ecosystems and bio-cultural conservation research cluster. He is interested in evolution and conservation biology, especially the adaptive significance of genetic diversity and the effects of increased population fragmentation and isolation.

This lecture is sponsored by the Augustana Center for Polar Studies and funded through the Augustana Institute for Leadership and Service.

For more information, contact Kamy Beattie at kamybeattie@augustana.edu or (309) 794-7721.

About Augustana: Founded in 1860 and situated on a 115-acre campus near the Mississippi River, Augustana College is a private, liberal arts institution affiliated with the Evangelical Lutheran Church in America (ELCA). The college enrolls 2,500 students from diverse geographic, social, ethnic and religious backgrounds and offers more than 70 majors and related areas of study. Augustana employs 287 faculty members and has a student-faculty ratio of 11:1. Augustana continues to do what it has always done: challenge and prepare students for lives of leadership and service in our complex, ever-changing world.




















 




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  Today is Saturday, Aug. 30, the 242nd day of 2014. There are 123 days left in the year.

1864 — 150 years ago: A large pair of elk, captured in Iowa, were exhibited in Market Square today.
1889 — 125 years ago: The Rock Island Arsenal dam was being constructed under the supervision of Charles Frances, of Lowell, Mass.
1914 — 100 years ago: Mrs. Frank Mixer, of Rock Island, was the winner of the final preliminary for the women's handicap golf cup at Rock Island arsenal links.
1939 — 75 years ago: Sixteen hundred persons — many from war-fearful Europe — arrived in New York aboard the German liner Bremen. For two days on the trip, passengers were cut off from the world with both incoming and outgoing radio messages banned.
1964 — 50 years ago: Police reported five youths have been involved in the theft of about seven cars in recent weeks. Three of the youths were arrested Saturday afternoon, one was in custody as the result of a previous arrest, and the fifth is expected to be arrested today.
1989 — 25 years ago: The Rock Island/Milan School Board is asking the city to tear down Franklin School and allow the school district to pay back the estimated $100,00 cost during 10 years.






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