uid=knbadmin,o=NCEAS,dc=ecoinformatics,dc=orgall uid=kwoods,o=unaffiliated,dc=ecoinformatics,dc=orgall publicread Huron Mt. Bourdo plots, 1962-2009 Bennington College, and Huron Mt. Wildlife Foundation Kerry Woods Bennington College

1 college drive Bennington Vermont 05201 United States

8024404465 kwoods@bennington.edu Kerry Woods Kerry Woods associatedParty 2014-09-22 Data set is repeated censuses of trees on nineteen 0.2-acre circular permanent plots in old-growth hemlock-northern hardwood forests in the Huron Mts. in northern Marquette Co., MI. Plots are located within a large private reserve, including about 4000 ha of never-logged, old-growth forest. Plots were first censused in 1962 and recensused in 1967 by Eric Bourdo (Michigan Technological University), with additional full censuses in 1989, 1994, 1999, 2004, 2009 by Kerry D. Woods (Bennington College). Stems measured in 1962-1967 were labelled and, beginning in 1989, all stems were mapped, allowing tracking of individual stems throughout the entire study period. 1962-1967 measurements included all stems greater than 5 in/12.7 cm diameter at breast height (dbh); from 1989 onward, stems > 5 cm dbh were mapped over entire plots, and stems > 1 cm dbh (tree species only) within a circular central sub-plot 8 m in diameter. This project was supported by the Huron Mountain Wildlife Foundation, the Andrew Mellon Foundation, and the National Science Foundation northern hardwoods old-growth forest tree demography Acer saccharum Tsuga canadensis Betula alleghaniensis None forests population dynamics GCMD Data file is in .csv format with each line representing a single measurement for a single tree. Data fields are: "tree": an index number permanently assigned to each individual tree in the study. "plot": code number for study plot "year": year of measurement (1962 to 2009) "dbh(cm)": diameter of breast height in year of measurement (converted from inches to cm for 1962 and 1967 data) "first_dead": if set at "1", indicates first observation after death of indicated tree; if set to "0", tree was alive at time of measurement Obtain permission from data set owner(s) digital 1962 2009 Huron Mountains region, northern Marquette County, Michigan, within the lands of the Huron Mountain Club 87.9433 87.8597 46.8903 46.8639 http://plants.usda.gov Species Acer saccharum Species Abies balsamea Species Acer rubrum Species Betula alleghaniensis Species Ostrya virginiana Species Tilia americana Species Tsuga canadensis Kerry Woods Bennington College

1 college drive Bennington Vermont 05201 United States

8024404465 kwoods@bennington.edu

Study plots were selected by original investigators in 1962 to represent a range of forest compositions in the Huron Mt. landscape. Plots are circulare, with an area 0.2 acre (= 16.1 m radius, approx. 805 square m). For 1962-1967, all stems > 5 in (12.7 cm) diameter at breast height (dbh) were tallied by species and dbh. Stems were labeled with painted numbers. From 1989 forward all stems were mapped on polar coordinates, stems > 5 cm dbh tallied by species and dbh throughout each plot, and stems > 1 cm mapped and measured for a central sub-plot of 8 m radius. Individual trees are indicated as dead ('first_dead' code = 1) in the first census after death and were not measured subsequently.

Temporal extent: 1962-2009; censuses in 1962, 1967, 1989, 1994, 1999, 2004, 2009 Spatial extent: 19 plots of 0.2 acre/805 square m area distributed over old-growth mesic forests within Huron Mountains, northern Marquette Co., MI. Taxonomic extent: All species of trees present in study plots. Full list: Abies balsamea, Acer rubrum, Acer saccharum, Betula alleghaniensis, Fraxinus nigra, Ostrya virginiana, Pinus strobus, Populus grandidentata, Quercus rubra, Tilia americana, Tsuga canadensis, Ulmus americana For 1962-1967, all stems > 5 in (12.7 cm) diameter at breast height (dbh) were tallied by species and dbh. Stems were labeled with painted numbers. From 1989 forward all stems were mapped on polar coordinates, stems > 5 cm dbh tallied by species and dbh throughout each plot, and stems > 1 cm mapped and measured for a central sub-plot of 8 m radius. Individual trees are indicated as dead ('first_dead' code = 1) in the first census after death and were not measured subsequently. oldplots_long_upload.csv oldplots_long_upload.csv 243333 d85057c3017d7217670757bdecaaa56a8fd20e38 application/vnd.ms-excel ecogrid://knb/knb.498.1 uid=knbadmin,o=NCEAS,dc=ecoinformatics,dc=orgall uid=kwoods,o=unaffiliated,dc=ecoinformatics,dc=orgall public read Other