uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/da42492838cd562bba014e7fdcbc7415 Christopher Williams https://orcid.org/0000-0002-5047-0639 Melanie Vanderhoof Myroslava Khomik https://orcid.org/0000-0002-0377-8833 Richard MacLean 2023 English

The aim of this dataset is to quantify the changes over time in woody seedling and sapling abundances and sizes at a site that was clearcut in the fall of 2008, followed by natural regeneration. It evidences successional changes in recruitment, survival, and associated self-thinning, and can be used to quantify accumulation of aboveground live biomass post-clearing with corresponding allometric relationships.

aboveground biomass forest disturbance regeneration species composition vegetation dynamics LTER controlled vocabulary primary production disturbance 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=hf232 Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.174 -72.174 +42.546 +42.546 403 403 meter 2010 2013 genus Acer species pensylvanicum striped maple species rubrum red maple genus Betula species alleghaniensis yellow birch species lenta black/sweet birch species papyrifera paper birch species populifolia gray birch species spp. birch genus Castanea species dentata chestnut genus Cornus species sp. dogwood genus Fagus species grandifolia American beech genus Picea species abies Norway spruce species glauca white spruce genus Pinus species resinosa red pine genus Pinus species strobus white pine genus Prunus species pensylvanica pin cherry species serotina black cherry species spp. cherry genus Quercus species rubra red oak species velutina black oak genus Sorbus species americana American mountain ash genus Tsuga species canadensis eastern 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

In 2010, 24 5 x 5 m plots were established, and a rebar stake driven to mark one of the corners for repeated measurements. With the 5 x 5 m plot all tree individuals were tallied and measured for diameter, height, and maximum crown width. Diameter height was determined by classifying individuals at saplings or seedlings, above or below 1.4 m in height. If an individual was a sapling diameter was measured at DBH (1.4 m), if a seedling diameter was measured at 15 cm. All plots were measured at the start of a year’s field season, and then a subset remeasured approximately a month later. The amount of plots remeasured varies by year. Individuals were classified as saplings (more than 1 m tall) or seedlings (less than 1 m tall). Diameters were measured at 1.4 m height for saplings and 15 cm height for seedlings. Diameters less than 1 cm were recorded as 0.5 cm.

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. hf232-01-seedling-sapling.csv seedling-sapling data hf232-01-seedling-sapling.csv 613028 882964bd3d176cc6e44c4aa94acef2a3 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p23/hf232/hf232-01-seedling-sapling.csv date date data were recorded YYYY-MM-DD NA missing value year year data were recorded YYYY NA missing value month month data were recorded month data were recorded NA missing value plot plot number plot number NA missing value species species code ACPE Acer pensylvanicum ACRU Acer rubrum BEAL Betula alleghaniensis BELE Betula lenta BEPA Betula papyrifera BEPO Betula populifolia BESP Betula spp. COSP Cornus sp. FAGR Fagus grandifolia PIAB Picea abies PIGL Picea glauca PIST Pinus strobus PIRE Pinus resinosa PIST Pinus strobus PISP Pinus spp. PRPE Prunus pensylvanica PRSE Prunus serotina PRSP Prunus spp. QURU Quercus rubra QUVE Quercus velutina TSCA Tsuga canadensis UNK Unknown spp. NA missing value type whether the individual is considered a sapling (greater than one meter tall), or seedling (less than one meter tall) whether the individual is considered a sapling (greater than one meter tall), or seedling (less than one meter tall) NA missing value diam.15cm diameter at 15 cm above ground. NA indicates a value less than 1 cm that was not measured centimeter 0.001 real NA missing value dbh diameter at breast height centimeter 0.001 real NA missing value max.height maximum height of the individual centimeter 1 real NA missing value max.width maximum crowth width of the individual centimeter 1 real NA missing value 12363 biodiversity community long-term measurement https://wordpress.clarku.edu/cwilliams/ https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf220 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf228 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf222