A paleolimnological record of anthropogenic disturbances at Holmes Lake,Adirondack Mountains,New York |
| |
| Authors: | Thomas E Rhodes |
| |
| Institution: | (1) Department of Botany and Plant Pathology, University of Maine, 04469 Orono, ME, USA |
| |
| Abstract: | Holmes Lake, Adirondack Mountains, New York, is a clear-water acidic lake that was treated with lime in 1983 to permit stocking of trout. Diatom assemblages in dated sediments reflect three anthropogenic modifications of the lake ecosystem: 1) assemblages from the mid- and late 1800's are associated with historical and sedimentary records of forest clearance, and indicate slightly increased pH; 2) acidobiontic species increase in sediments from the mid-1900's, a period of local reforestation and regionally increasing anthropogenic acid loading; 3) liming caused large increases of circumneutral periphytic species in the first growing season, and decreases of acidobiontic species by the second. |
| |
| Keywords: | paleolimnology diatoms lake acidification logging watershed disturbance Adirondacks |
| 本文献已被 SpringerLink 等数据库收录！ |
|
