uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/19a91b19dbba690030388e4e67be49e7 Timothy Sipe Richard Bowden Charles McClaugherty https://orcid.org/0000-0001-5884-0756 Zachary Buzzinotti Researcher Richard Gordon Researcher Mark Norris Researcher 2023 English

Numerous variables related to land use disturbance and recovery processes influence forest composition, structure, and growth. We measured forest communities in six sites that were formerly plowed, pastured, or continuously forested woodlots in Prospect Hill to test predictions about species composition, stand structure, and productivity in response to agricultural land use legacies. A permanent 30 x 50 m plot gridded in 5 x 5 m sub-plots was established in each of the 6 sites. All trees at least 2.5 cm DBH (diameter at breast height, 1.3 m) were mapped visually in the field, marked with an aluminum tag, and their DBH recorded in summer 1996. Individual boles of multi-stemmed trees were measured separately and a composite single DBH was calculated. Standing dead trees were also mapped and their DBH recorded as well. The 1996 data were used to determine above ground woody biomass using allometric equations for individual trees. The permanent plots were re-surveyed ten years later in fall 2006. The status of each tree mapped in 1996 was recorded (alive, dead standing, dead fallen, forked) and DBH’s were re-measured. Additional trees that grew across the 2.5 cm DBH threshold during the ten-year period were mapped and their DBH’s measured. Composite diameters and above ground woody biomass were determined for forked trees as in 1996. The 2006 re-measurements were used to analyze changes in species composition, stand structure (density, diameter distribution), and mortality patterns among species and size classes, and to calculate net changes in above ground woody biomass across the ten-year period.

aboveground biomass growth land use mortality survival tree maps vegetation dynamics LTER controlled vocabulary populations disturbance land use human-environment LTER core area Harvard Forest HFR LTER USA HFR default

This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf137 Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.20 -72.17 +42.55 +42.53 335 357 meter 1996 2006 genus Acer species rubrum red maple genus Acer species saccharum sugar maple genus Acer species pensylvanicum striped maple genus Betula species alleghaniensis yellow birch genus Betula species lenta black birch genus Betula species papyrifera paper birch genus Betula species populifolia gray birch genus Castanea species dentata american chestnut genus Fagus species grandifolia american beech genus Fraxinus species americana white ash genus Hamamelis species virginiana witch hazel genus Pinus species strobus white pine genus Populus species grandidentata bigtooth aspen genus Prunus species serotina black cherry genus Quercus species alba white oak genus Quercus species rubra red oak genus Quercus species velutina black oak genus Tsuga species canadensis hemlock complete Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu

Plot locations: Plow #1 Site: Prospect Hill Tract, Compartment # III, southern end. Plow #2 Site: Prospect Hill Tract, Compartment # III, southern end. Pasture #1 Site: Prospect Hill Tract, Compartment # I, southeastern edge. Pasture #2 Site: Prospect Hill Tract, Compartment # VIII, central edge. Woodlot #1 Site: Prospect Hill Tract, Compartment # VIII, northeastern edge. Woodlot #2 Site: Prospect Hill Tract, Compartment # VII, central.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf137-01-tree.csv mapped trees hf137-01-tree.csv 118154 d3ad5cb3c1770627d389d88d5ea08df2 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p13/hf137/hf137-01-tree.csv site site P1 Plow 1 P2 Plow 2 S1 Pasture 1 S2 Pasture 2 W1 Woodlot 1 W2 Woodlot 2 plot plot number. Each permanent 30 x 50 m grid has 60 5 x 5 m plots. They are numbered from left to right and top to bottom across the grid. The upper left corner plot is 1 and the lower right corner plot is 60. plot number tag tag number. Unique aluminum tag number affixed to trees mapped in 1996 (2200 through 3200). New trees mapped in 2006 that were under the 2.5 cm DBH threshold in 1996 were assigned a unique tag number (4000-range) on the field maps, but no metal tag was affixed to the stems. tag number grid.x x-coordinate. Spatial coordinates for the locations of trees mapped in 1996. Coordinates for new trees in 2006 will be added in the future. meter 0.1 real NA missing value grid.y y-coordinate. Spatial coordinates for the locations of trees mapped in 1996. Coordinates for new trees in 2006 will be added in the future. meter 0.1 real NA missing value species species code. A 6-letter genus-species abbreviation for each tree recorded in the plots. species code bole1.dbh.1996 diameter at breast height of Bole 1 in 1996 centimeter 0.1 real NA missing value bole2.dbh.1996 diameter at breast height of Bole 2 in 1996 centimeter 0.1 real NA missing value bole3.dbh.1996 diameter at breast height of Bole 3 in 1996 centimeter 0.1 real NA missing value bole4.dbh.1996 diameter at breast height of Bole 4 in 1996 centimeter 0.1 real NA missing value bole5.dbh.1996 diameter at breast height of Bole 5 in 1996 centimeter 0.1 real NA missing value bole6.dbh.1996 diameter at breast height of Bole 6 in 1996 centimeter 0.1 real NA missing value tot.ba.1996 basal area per mapped tree in 1996 squareCentimeters 0.1 real NA missing value comp.dbh.1996 diameter at breast height for all individual trees, including a composite DBH for forked trees centimeter 0.1 real NA missing value awb.1996 aboveground woody biomass estimated for each tree in 1996 using published species-specific allometric equations (available upon request). kilogram 0.1 real NA missing value status.2006 2006 status for all trees mapped in 1996 A alive DS dead but standing F fallen forked.2006 living and dead stems on forked trees were recorded individually in the field, but these designations are removed in the archived file so that AWB calculations can be made on all living and dead stems. Y yes for multi-stemmed trees as of 2006 bole1.dbh.2006 diameter at breast height of Bole 1 in 2006 centimeter 0.1 real NA missing value bole2.dbh.2006 diameter at breast height of Bole 2 in 2006 centimeter 0.1 real NA missing value bole3.dbh.2006 diameter at breast height of Bole 3 in 2006 centimeter 0.1 real NA missing value bole4.dbh.2006 diameter at breast height of Bole 4 in 2006 centimeter 0.1 real NA missing value bole5.dbh.2006 diameter at breast height of Bole 5 in 2006 centimeter 0.1 real NA missing value bole6.dbh.2006 diameter at breast height of Bole 6 in 2006 centimeter 0.1 real NA missing value tot.ba.2006 basal area per mapped tree in 2006 squareCentimeters 0.1 real NA missing value comp.dbh.2006 diameter at breast height for all individual trees in 2006, including a composite DBH for forked trees centimeter 0.1 real NA missing value awb.2006 aboveground woody biomass estimated for each tree in 2006 using published species-specific allometric equations (available upon request). kilogram 0.1 real NA missing value 1197 historical plot community long-term measurement https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf133 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf134 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf135 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf136 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf138 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf139 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf140 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf141 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf142 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf143 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf144