public read Forest Ecosystem Monitoring Cooperative

705 Spear StreetSouth BurlingtonVermont05403United States of America

(802) 656-0683femc@uvm.eduwww.uvm.edu/femcHubbard Brook Ecosystem Study leadCornell University University Of California, Berkeley partnerA whole-tree harvest was conducted during the dormant season of 1983-1984 in order to assess ecosystem response to whole-tree logging operations. Pre-harvest forest inventory surveys were conducted in 1982 on the whole of the watershed. Post-harvest surveys were conducted in 1990, 1994 and every 5 years thereafter. Sampling methods change overtime so users should be aware of these changes when looking to aggregate data. Pre-treatment sampling included all stems >=2cm, post treatment measurements in 1990 were conducted using circular plots, 1995 to 2005 where conducted within a subset of the 25x25m grid cells on 1x25m square plots, and the final measurement 2009 included nested circular plots Forest Ecosystem Monitoring CooperativeFounded in 1963, the Hubbard Brook Ecosystem Study is one of the longest running and most comprehensive ecosystem studies in the world. The collaborative, multidisciplinary research efforts include long-term studies of air, water, soils, plants, and animals. The study site is the Hubbard Brook Experimental Forest, a 7,800-acre northern hardwood forest situated in the White Mountains of New Hampshire. The Hubbard Brook Ecosystem Study is a unique public-private partnership involving the USDA Forest Service, the National Science Foundation’s Long Term Ecological Research (LTER) program, the Hubbard Brook Research Foundation, and scientists from research institutions throughout the country.Forest Inventory of a Whole Tree Harvest 1982-2009: Watershed 5, Hubbard Brook Experimental Forest A whole-tree harvest was conducted during the dormant season of 1983-1984 in order to assess ecosystem response to whole-tree logging operations. Pre-harvest forest inventory surveys were conducted in 1982 on the whole of the watershed. Post-harvest surveys were conducted in 1990, 1994 and every 5 years thereafter. Sampling methods change overtime so users should be aware of these changes when looking to aggregate data. Pre-treatment sampling included all stems >=2cm, post treatment measurements in 1990 were conducted using circular plots, 1995 to 2005 where conducted within a subset of the 25x25m grid cells on 1x25m square plots, and the final measurement 2009 included nested circular plots VMC.1388.2870mySQL/femc/data/archive/project/Hubbard_Brook_Ecosystem_Study/dataset/forest-inventory-whole-tree-harvest-19821982-01-01SppNumSpecies NumSpecies Num in the HB Forest Inventory datasetint1ITIS #28731, sugar maple (Acer saccharum)2ITIS #19462, American beech (Fagus grandifolia)3ITIS #19481, yellow birch (Betula alleghaniensis)4ITIS #32931, white ash (Fraxinus americana)5ITIS #28758, mountain maple (Acer spicatum)6ITIS #28754, striped maple (Acer pensylvanicum)7ITIS #24799, pin cherry (Prunus pensylvanica)8ITIS #24806, chokecherry (Prunus virginiana)9ITIS #18032, balsam fir (Abies balsamea)10ITIS #18034, red spruce (Picea rubens)11ITIS #19489, paper birch (Betula papyrifera)12ITIS #25319, American mountain-ash (Sorbus americana)13ITIS #28728, red maple (Acer rubrum)14ITIS #183397, Canada hemlock; hemlock spruce (Tsuga canadensis)15ITIS #823, (Radiocystis )16ITIS #195773, quaking aspen (Populus tremuloides)17ITIS #24764, black cherry (Prunus serotina)18ITIS #25108, serviceberry (Amelanchier sp.)19ITIS #22463, bigtooth aspen (Populus grandidentata)20ITIS #22476, willow spp (Salix sp.)21ITIS #27813, alternate-leaf dogwood; alternateleaf dogwood (Cornus alternifolia)22ITIS #24762, cherry, plum (Prunus sp.)