tag:blogger.com,1999:blog-430422923138483390.post3312647796814000273..comments2023-03-23T03:47:51.791-07:00Comments on SAPS-NCGA: Winter Tree ID with Flo Chaffin compiled by Kathy Stilwell with Jean Hunnicutt and David Fannsapsncgahttp://www.blogger.com/profile/04843064785082079245noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-430422923138483390.post-6694164784143251302014-01-27T13:40:13.310-08:002014-01-27T13:40:13.310-08:00Wow! Dan, that is fascinating (and disturbing) in...Wow! Dan, that is fascinating (and disturbing) information! We found it interesting that there is, evidently, no information on when any of the trees were planted except for those in the past ten years! We only toured the North Campus....could that be why the three you studied aren't listed? GracePlays-Kathy A. Stilwellhttps://www.blogger.com/profile/13827361711804586048noreply@blogger.comtag:blogger.com,1999:blog-430422923138483390.post-48209826427163744392014-01-26T14:07:04.729-08:002014-01-26T14:07:04.729-08:00As a graduate of UGA, I had most of my time spent ...As a graduate of UGA, I had most of my time spent on the south campus in the biology (then botany) building. Although you didn't mention the three species I investigated (Juniperus virginiana, Quercus georgiana, & Pinus taeda), they were a very important part of my search for the radionuclides that had been sequestered in these in both significant habitats of woodlands and rock outcrops. I had to sacrifice about 5 of each in each of three places, 1) high, 2) low outcrops, and 3) woodlands. This took place in 1963 just after nuclear bomb tests in New Mexico and Russia. Radioisotopes were found from both testing areas, not only on the surface of the trees but also taken up into the stems. I sampled the blocks of stems by 5-year increments back to '58, '53. '48, and before 1948. I hypothesized that the radionuclides would be greatest on high outcrops and least on low ones. I had no idea about whether the wood would get radioactive but it did. My main conclusion was that fallout from weapons testing not only reached around the world but some of the radionuclides, such as Cesium-137 would move into an organism and act like its similar element, potassium. Further, these radioisotopes became concentrated as one moved down the food chain with cocurrent work being conducted by my professor, Dr. Gaylerd Plummer.J. Dan Pittillohttps://www.blogger.com/profile/15352902566922189622noreply@blogger.com