uid=HFR,o=lter,dc=ecoinformatics,dc=org
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public
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doi:10.6073/pasta/7cce5a76480c419eced247ec3542ad37
Coarse Woody Debris in the Clearcut Site at Harvard Forest 2010
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 (CWD)
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.
Fine Woody Debris (FWD)
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 Long-Term Ecological Research
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