James R. McClenahen passed away on Monday, March 10, 2014, in his hometown of Shreve, Ohio. Jim graduated from Penn State University in 1963 with a B.Sc. in forestry and went on to earn an M.Sc. in silvaculture from Penn State in 1964. Following his graduation, he worked for the US Forest service as a ranger on the London District of the Daniel Boone National Forest. He remained there until August of 1966, when he began service in the US Army. After his discharge in 1968, Jim returned to Penn State to earn a Ph.D. in forest ecology in 1974.

He moved to Shreve in 1972 as a post-doctoral research associate at Ohio State University. From 1974 until his retirement in 1995, Jim served as assistant professor and later associate professor of forestry in the School of Environment and Natural Resources (formerly School of Natural Resources). His work involved research on forest ecosystems and effects of air pollution on tree growth, mentoring students at the undergraduate and graduate levels. After his retirement, Jim was a partner with Dr. Daniel Houston in Sylvancare Forestry Consultants, and also an active partner in Hutnik, Davis and McClenahen Consultants until his illness in late 2013. Jim was an avid outdoorsman, and enjoyed hunting, fishing, canoeing, biking and running. He loved backpacking and hiked in many areas in the United States and Canada. He is survived by his wife, daughter, and two grandchildren.

The tree-ring community is likely to know Jim from his papers and reports on tree growth, forest ecology and forest decline. Notable among these was a series of papers about dendrochemistry of tree rings using PIXE analysis between 1987 and 1995.

—Editor*