uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/7cce5a76480c419eced247ec3542ad37 Melanie Vanderhoof Christopher Williams https://orcid.org/0000-0002-5047-0639 2023 English

The woody debris survey was designed to quantify the baseline amount of woody debris within the clearcut site, including coarse and fine woody debris and stumps. Coarse woody debris and stumps were measured using the plot method, while fine woody debris was measured using the line intercept method. Our woody debris survey methods are detailed below. An initial or baseline survey was completed in 2010.

clearcuts coarse woody debris timber harvest LTER controlled vocabulary organic matter 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=hf220 Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.174 -72.174 +42.546 +42.546 403 403 meter 2010 2010 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

Coarse woody debris (at least 7.5 cm in diameter at the larger end) included logs (less than 45° off the ground), whole tree snags (intact bole with branches and twigs), log snags (standing bole, more than 45° off the ground) and stumps (log snag less than 1 m in height). All coarse woody debris within nine 20 meters by 20 meters plots were measured and tagged. Each of the four corners of the plots was marked with permanent, painted rebar stakes. For each piece of CWD within each plot, a metal tag was attached, and the genus (if identifiable), decay class (1-5), as defined by Harmon and Sexton (1996), and physical and biological characteristics were recorded. For logs and log snags, the length and diameter at both ends and middle were measured. For whole tree snags, the DBH was recorded. For stumps the height and base and top diameters were measured. Assumptions: CWD pieces that extended beyond the edge of the plot were measured up until the edge of the plot. If less than one meter of a piece of CWD was visible or accessible then the piece was considered to be "underground" and was not measured. In addition, pieces of wood with a large diameter but less than a meter in length were tagged and measured if greater than 0.5 meters in length (parts of logs rejected from the commercial harvest). Stumps that were too degraded to hold a tag were not measured or tagged.

All fine woody debris (all dead, downed wood with a diameter between 2 and 7.5 cm) was measured along five 50 m transects that radiated out from the flux tower. For each piece of FWD, the diameter, at the point of intersection and the decay class (1-5) was measured. Pieces with a large diameter but less than 0.5 m in length were also included as they were excluded from the CWD plots, as described above.

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. hf220-01-cwd.csv coarse woody debris hf220-01-cwd.csv 151974 0e2ee0900ba8c2c496c673c8ad5529c6 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p22/hf220/hf220-01-cwd.csv date date YYYY-MM-DD NA missing value plot plot number plot number NA missing value tag number on metal tag number on metal tag NA missing value type type of coarse woody debris type of coarse woody debris NA missing value species species species NA missing value length log length centimeter 1 real NA missing value base.dia diameter of log base centimeter 0.1 real NA missing value mid.dia diameter of log mid-point centimeter 0.1 real NA missing value top.dia diameter of log top centimeter 0.1 real NA missing value dbh diameter at breast height centimeter 0.1 real NA missing value decay decay class decay class NA missing value bark percent bark remaining on the bole dimensionless 1 real NA missing value ground percent of bole in contact with the ground dimensionless 1 real NA missing value leaves leaves present or not present 0 not present 1 present NA missing value twigs twigs present or not present 0 not present 1 present NA missing value branches branches present or not present 0 not present 1 present NA missing value branch.bark bark on branches present or not present 0 not present 1 present NA missing value bole.bark bark on bole present or not present 0 not present 1 present NA missing value sw.slough sapwood sloughing present or not present 0 not present 1 present NA missing value sw.friable sapwood friable present or not present 0 not present 1 present NA missing value hw.friable heartwood friable present or not present 0 not present 1 present NA missing value hollow hollow present or not present 0 not present 1 present NA missing value conks conks present or not present 0 not present 1 present NA missing value moss moss present or not present 0 not present 1 present NA missing value lichen lichen present or not present 0 not present 1 present NA missing value termites termites present or not present 0 not present 1 present NA missing value other.bugs other bug signs present or not present 0 not present 1 present NA missing value notes notes notes NA missing value 1636 hf220-02-fwd.csv fine woody debris hf220-02-fwd.csv 12396 f16137103f79da2d165dd6bd0d7a8ef1 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p22/hf220/hf220-02-fwd.csv date date YYYY-MM-DD 1 day NA missing value transect transect number transect number NA missing value diameter the diameter of each piece measured where it intersected the transect centimeter 0.1 real NA missing value decay.class decay class decay class NA missing value notes notes notes NA missing value 526 plot long-term measurement https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf221 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf222