CSPs: Coarse woody debris (CWD). Collection of data on dead wood with special regard to the 2008 ice storm

Usage Rights

This data is Free for public.

Permission is granted to anybody to access, use and publish all open for public data freely. The commercial use of any data is prohibited. The quality and completeness of data cannot be guaranteed. Users employ these data at their own risk. In order to make attribution of use for owners of the data possible, the identifier of ownership of data must be retained with every data record. Users must publicly acknowledge, in conjunction with the use of the data, the data owners. Cite the data as follows: von Oheimb, G., Nadrowski, K. and Wirth, C.(2013): Coarse woody debris (CWD): Collection of data on dead wood with special regard to the 2008 ice storm. BEF-China data portal (Accessed through URL http://china.befdata.biow.uni-leipzig.de/datasets/204)

Dataset Abstract

1) Objectives: -- a) Quantify “undisturbed” state prior to snow break. -- b) Quantify carbon and nitrogen stocks in aboveground CWD as a component of a full carbon and nitrogen budget. -- c) Estimate turnover of CWD carbon depending on species, positioning and mortality i) Indirect carbon balance approach: Calculate deadwood input (I) to the forest floor by combining chronosequence data on woody increment and biomass. Calculate turnover under assumption of equilibrium stocks (M/I) ii) Direct approach: Revisit site after 2 to 3 years and measure position, take a sample to estimate density and volume loss (in-situ observations indicate a progression from a solid log to something substantially decayed within few months). -- d) Compare species-specific sensitivities to snowbreak as a trait i) Calculate the likelihood of being subject to snowbreak given the species, size and potentially the relative position using logistic regression ii) Calculate the likelihood of snag survival; this requires re-sampling iii) Estimate the down-slope transport of deadwood pieces iv) Estimate the time it takes for deadwood to collapse and touch the forest floor ----- File asset Plot_skizze.pdf: plot sketch how the debris objects are selected - File asset sp10 CWD_protocol_Gutianshan_AF_20081215_kn.doc: Inventory protocol, should be included into methods ----- 2) Objective allometries: use some of the downed or alive trees to establish coarse allometries to estimate volume of the remaining intems

Dataset Design

within center plot different from in the outer plots

Spatial Extent

CSPs - Comparative Study Plots, Gutianshan National Nature Reserve
29°08'-29°17'N
118°02'-118°11'E

Temporal Extent

Gutianshan reserve, CSP Plots, Autumn 2008 and following surveys in 2009, dead woody debris

Taxonomic Extent

tree individuals

Data Analysis

one can use it to assess the snowbreak loss and the amount of woody debris; mind that there are extra parts measured of trees labelled "allometries"; these parts should not be included into extrapolation of woody debris mass. Check column descriptions for more information. Ignore the "plotignore" rows, since these are double counted. To combine these data with the data of the living trees, check the dataset on metal tags and coarse woody debris items "Metal tags for coarse woody debris (CWD) items in the CSPs and corresponding metal tags and stem ids from the living tree data.".

Freeformat files (3)

Paper proposal submissions

Published

2010

Data columns available in the raw data part of this dataset

rownr
rownr in the original Excel file; Datagroup description: Helper
Data group: Helper
Values
100
1001
1002
1000
10
date
mm/dd/yyyyDate time information; Datagroup description: Date time information
Unit: date
Data group: Date time information
Keywords: date
Values
2008-12-25 00:00:00
2008-09-25 00:00:00
2008-09-26 00:00:00
2008-12-24 00:00:00
2008-09-28 00:00:00
Date
dd.mm.yyDate time information; Datagroup description: Date time information
Unit: date
Data group: Date time information
Keywords: date
Values
28.9.08
start
start time of surveyDate time information; Datagroup description: Date time information
Unit: time of the day
Data group: Date time information
Keywords: date
Values
1899-12-30 09:30:00
1899-12-30 09:26:00
1899-12-30 09:40:00
1899-12-30 09:15:00
1899-12-30 09:20:00
end
end time of surveyDate time information; Datagroup description: Date time information
Unit: time of the day
Data group: Date time information
Keywords: date
Values
1899-12-30 11:35:00
1899-12-30 10:02:00
1899-12-30 11:23:00
1899-12-30 10:00:00
1899-12-30 10:05:00
plotignore
I renamed the "K21" to plot 19, since the page numbers fitted best. Plot 19 and K21 were like two puzzle pieces in terms of page numbers of the original paper forms; Datagroup description: Helper
Data group: Helper
Keywords: location
Values
k21
CSP
k21 is CSP21, which was mapped by Christian and Karin, but was remapped by Anja and Thiemo. Some of the tags distributed by Christian were found again by Anja and they are the K? xy tags in the CSP21 observations. The k21 rows should be ignored, since they were remeasured.; Comparative Study Plots (CSP) in the Gutianshan Nature Reserve, having a size of 30x30m^2, measured on the ground.
Data group: BEF research plot name
Keywords: location, CSP
Values
CSP01
CSP02
CSP04
CSP05
CSP03
working condition
weather condition on the day of surveyWeather conditions; Datagroup description: Weather conditions
Data group: Weather conditions
Keywords: weather
Values
cloudy, maybe rain soon
cloudy & little windy
cloudy, all wet and muddy
cloudy
cloudy, some rain drops
protoc.first
first name of protocolling personHelper; Datagroup description: Helper
Data group: Helper
Values
Karin
Christian
Anja
protoc.sur
surname of protocolling personHelper; Datagroup description: Helper
Data group: Helper
Values
Nadrowski
Fankhaenel
Wirth
meas.first
first name of measuring personHelper; Datagroup description: Helper
Data group: Helper
Values
Christian
Tiemo
meas.sur
surname of measuring personHelper; Datagroup description: Helper
Data group: Helper
Values
Kahl
Wirth
entered.first
first name of entering personHelper; Datagroup description: Helper
Data group: Helper
Values
Anja
entered.sur
sur name of entering personHelper; Datagroup description: Helper
Data group: Helper
Values
Fankhaenel
entered.date
date of entering dataDate time information; Datagroup description: Helper
Data group: Helper
Values
2009-01-29 00:00:00
2009-01-28 00:00:00
2009-02-02 00:00:00
2008-12-10 00:00:00
2009-01-30 00:00:00
page
page number of original data sheet of paperHelper; Datagroup description: Helper
Data group: Helper
Values
3
1
4
2
10
Central_subplot
This column indicates whether the data were taken on the whole plot (w) or on the center plot (c). Generally, all items belonging to an object that has a base diameter smaller than 10 cm have been measured in the central plot. Thus, one has to check if the item belongs to other items (CWD_CSP is the same), and then determine the maximal base diameter of the items belonging to that object.
Data group: Subplots within CSPs
Keywords: location, CSP
Values
out
c
c/w
nn
w
CWD-Id
number of recorded individuum, numbered sequentially per object (stem, branch, …) within CSPHelper; Datagroup description: Helper
Data group: Helper
Values
11
1
10
12
13
CWD_CSP_original
original ID of woody debris item, combination of the CSP plot name and the CWD_ID; Datagroup description: Helper
Data group: Helper
Values
CSP01_11
CSP01_13
CSP01_12
CSP01_10
CSP01_1
Idaddon
part number of individuum, however, Idaddon = 1 is not always the root item of a multi-item object. For this, the identity of the object can be derived from "CWD_CSP" and the item with the widest diameter will be the root item. Tags or mortality causes will mostly only be given for the root item and not for the other items belonging to one debris object.
Unit: count
Data group: Woody debris part
Keywords: woody debris, object
Values
10
12
13
1
11
CWD_CSP
corrected ID of woody debris item, combination of the CSP plot name and the CWD_ID
Data group: Woody debris items
Keywords: woody debris, object
Values
CSP01_13
CSP01_10
CSP01_1
CSP01_11
CSP01_12
Species
The species is recorded. This requires the help of Mr. Fang. Overly short abbreviations should be avoided. If no identification is possible write “?”; Scientific plant species name;; Datagroup description: Scientific plant species name; Source: Flora of China, Helge Bruelheide (derived from datagroup); Source: Flora of China, Helge Bruelheide (derived from datagroup)
Data group: Scientific plant species name
Keywords: species
Values
Albizia kalkora
Camellia fraterna
Adinandra millettii
Alniphyllum fortunei
Camellia chekiangoleosa
* Fang, J., Fang, T. also contributed to this column.
specunpolished
Sepecies UnpolishedHelper; Datagroup description: Helper
Data group: Helper
Values
Camelia chekiang-oleosa
Albizia kalkora
Alniphyllum fortunei
Adinandra milletii
:
* Fang, J., Fang, T. also contributed to this column.
TagAFCW
Silver ID given by Anja, can be given to a woody debris item or to a standing dead tree or snagCSP metal tag number (trees, woody debris); Datagroup description: CSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: object
Values
369490
370081
370251
370343
371257
TagMBa
Silver ID given by Martin, in this case the tree was considered alive by Martin, and dead by AnjaCSP metal tag number (trees, woody debris); Datagroup description: CSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: object
Values
363023
363039
363011
363040
363030
TagAFCW original
Silver ID given by Anja or Christian, can be given to a woody debris item or to a standing dead tree or snagCSP metal tag number (trees, woody debris), original entry. A "w" in front of a tag means that this object _was_ part of another tree, which has the tag number given. Deleted this, and put the tag number in the crown origin column. "life" means that this object already had a tag, so that it was considered _life_ by Martin Baruffol in 2008.; Datagroup description: CSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: object
Values
370343
370251
371257
369490
370081
TagMBa original
Silver ID given by Martin, Anja, or Christian, in this case the tree was considered alive by Martin, and dead by AnjaCSP metal tag number (trees, woody debris). Original data entry. A "w" in front of a tag means that this object _was_ part of another tree, which has the tag number given. Deleted this, and put the tag number in the crown origin column. "life" means that this object already had a tag, so that it was considered _life_ by Martin Baruffol in 2008. "not possible" means that it was not possible to attach a tag to this debris object ---- "K?" means that Anja found this tag on a debris object that might have been tagged by Christian Wirth; Datagroup description: CSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: object
Values
363023
363040
363011
363039
363030
DBH
diameter at breast height. It was measured in standing trees, or snags, additional to the basal diameter; Diameter at breast height;; Datagroup description: Diameter at breast height; Instrumentation: diameter tape, calliper (derived from datagroup); Instrumentation: diameter tape, calliper (derived from datagroup)
Unit: centimeter
Data group: Diameter at breast height
Keywords: response variable, dbh
Values
10.6
10
10.5
10.2
11
dbh.comment
comment on the dbh value; Datagroup description: Helper
Data group: Helper
Values
added DBH from Martins data, Martins tag number is probably wrong: 372276
added DBH from Martins data 2008
copied dbh from crown here, this tree was broken below 1.3 m!
dbhpostmean
diameter at breast height posterior mean, extrapolated from basal diameter, if that was not given; Diameter at breast height;; Datagroup description: Diameter at breast height; Instrumentation: diameter tape, calliper (derived from datagroup); Instrumentation: diameter tape, calliper (derived from datagroup)
Data group: Diameter at breast height
Keywords: response variable, dbh
Values
11.34146407
12.81658683
10.475998
10.61072954
12.78043313
dbhpostsd
Uncertainty of the dbh extrapolation (standard deviation of the posterior distribution)Helper; Datagroup description: Helper
Data group: Helper
Keywords: co-variable
Values
0.577623616
0.528695707
0.634354914
0.672013674
0.577904292
stemsGrEq10
Probability that a stem would be considerd greater or equal than 10 given it's basal diameter. If it would be considered greater, it would be counted in the outer subplots of a CSP. If it would not be considered greater than 10, it would not be considered in the outer subplots.Helper; Datagroup description: Helper
Data group: Helper
Keywords: location
Values
0.623752495
0.057884232
0.796407186
0.644710579
0.209580838
stemsCnSm10
Probability that a stem in the central plot would be considered smaller than 10 cm. It would then only be counted in the central subplot as contributing to the biomass.Helper; Datagroup description: Helper
Data group: Helper
Keywords: location
Values
0.007984032
0.005988024
0.003992016
0.001996008
0.000998004
height
height of snag: The height is measured on all upright CWD (i.e. standing dead trees or snags with top broken) but also for the live snags (this is very important!). However, labeled individuals (i. e. live snags) have been measured by Martin Barrufol. In plots with very steep slopes the height may be estimated visually; otherwise a clinometers is used.; Plant height;; Datagroup description: Plant height; Instrumentation: Vertex Forester (derived from datagroup); Instrumentation: Vertex Forester (derived from datagroup)
Unit: meter
Data group: Plant height
Keywords: response variable, snag height
Values
3.6
6
2
4
2.4
BD
diameter at the base of wood: (dbh: The diameter at breast height is preferably measured with a dbh-tape. For live snags the measurement height is indicated by a white mark made by Martin Barrufol - see dbh for this). For woody debris and deadwood pieces where the breast height cannot be identified, the base and top diameter are recorded.
Unit: centimeter
Data group: Woody debris dimensions
Keywords: response variable, basal diameter
Values
10.3
10
10.4
10.2
0.2
lookup tag
Silver tag to look up the values of trees from other files; Datagroup description: CSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: object
Values
336998
363073
363533
363097
363088
dbase.remark.kn
remark on dbase by Karin, mostly copying those entries that could not be converted to numbersHelper; Datagroup description: Helper
Data group: Helper
Values
~15.0
~12.0
~120.0
~11.0
~10.0
dtop
diameter at the top of woodWoody debris dimensions
Unit: centimeter
Data group: Woody debris dimensions
Keywords: response variable, size
Values
0.5
11
10.5
10
10.9
dtop.remark.kn
remark on dtop by Karin, , mostly copying those entries that could not be converted to numbersHelper; Datagroup description: Helper
Data group: Helper
Values
~14.0
~21.0
-
~11.0
~10.0
length
length of woodWoody debris dimensions, if this is a stem lying on the ground
Unit: meter
Data group: Woody debris dimensions
Keywords: response variable, size
Values
0.4
0.5
0.6
0.2
0.3
len.rem.kn
remark on length by Karin, mostly copying those entries that could not be converted to numbersHelper; Datagroup description: Helper
Data group: Helper
Values
to be estimated
so it is broken at 2.5 m height
nn
height_length
height / length, original data column in which height and length were written into. Height is for a standing tree, length for a tree lying on the ground. The number in height_length that is not either height or length is then the length of a woody debris object part, for example a branch, that can be part of another branch.
Unit: centimeter
Data group: Woody debris dimensions
Keywords: response variable, size
Values
0.15
0.18
0.12
0.1
0.05
* Fang, J., Fang, T. also contributed to this column.
hei.len.rem.kn
remark on heigtht..length by Karin, mostly copying those entries that could not be converted to numbersHelper; Datagroup description: Helper
Data group: Helper
Values
~ 10.00
~10.50
~1.00
-
~10.00
broken at
height at which the stem or snag is broken; extracted from comments; Datagroup description: Woody debris dimensions
Unit: meter
Data group: Woody debris dimensions
Keywords: response variable, size
Values
0.4
1.35
1.7
1.5
1
broken diam
diameter of the stem or snag at the broken point; extracted from comments; Datagroup description: Woody debris dimensions
Unit: centimeter
Data group: Woody debris dimensions
Keywords: response variable, size
Values
10
15
neigh.label
label ID of neighbouring individual: We locate every tagged individual CWD piece. In case of a snag and a broken top we record the position of the snag and also of the bottom part of the broken crown. This is always done in relationship to the nearest or nearby labeled reference tree. The number of this tree (#NN label) is noted as well as the distance (Dist. to NN) to it and the azimuth (Azim to NN) from the reference tree to the CWD piece. In case of logs without a visible base, the part with the largest diameter (or circumference) is used as a base. The position helps us to relocate the logs and also to quantify how fast they travel downslope. Mind that the azimuth may have to be corrected given the date and location, since it depends on the magnetic field of the earth.CSP metal tag number (trees, woody debris); Datagroup description: CSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: location
Values
336998
363051
363031
349952
363041
reference is self
label of reference tree is the tree itself, woody debris item belongs to the tree indicated in the reference tree (neighbour label); Datagroup description: Helper
Data group: Helper
Keywords: object
Values
true
neigh.dist
distance to neighbour: We locate every tagged individual CWD piece. In case of a snag and a broken top we record the position of the snag and also of the bottom part of the broken crown. This is always done in relationship to the nearest or nearby labeled reference tree. The number of this tree (#NN label) is noted as well as the distance (Dist. to NN) to it and the azimuth (Azim to NN) from the reference tree to the CWD piece. In case of logs without a visible base, the part with the largest diameter (or circumference) is used as a base. The position helps us to relocate the logs and also to quantify how fast they travel downslope. Mind that the azimuth may have to be corrected given the date and location, since it depends on the magnetic field of the earth.
Unit: meter
Data group: Distance
Keywords: location
Values
0.3
0.1
0.2
0.25
0
neigh.azimut
azimut from neighbour to reference wood: We locate every tagged individual CWD piece. In case of a snag and a broken top we record the position of the snag and also of the bottom part of the broken crown. This is always done in relationship to the nearest or nearby labeled reference tree. The number of this tree (#NN label) is noted as well as the distance (Dist. to NN) to it and the azimuth (Azim to NN) from the reference tree to the CWD piece. In case of logs without a visible base, the part with the largest diameter (or circumference) is used as a base. The position helps us to relocate the logs and also to quantify how fast they travel downslope. Mind that the azimuth may have to be corrected given the date and location, since it depends on the magnetic field of the earth.
Unit: degree
Data group: Azimuth
Keywords: location
Values
105
100
0
10
102
direction CWD
Direction to woody debris item: The direction a woody debris is aligned from the thick to the thin part of the debris object
Unit: degree
Data group: Angle
Values
100
105
0
10
1
pos.cw
Positioning information: Type of the woody debris object: Original classification as defined by Christian Wirth and Goddert von Oheimb.; Helper; Dead wood inventory; Datagroup description: Helper
Data group: Helper
Values
-
1a
1b
2
2a
pos.af_original
Positioning information as given in the original data sheet. Corrections are in pos.af; Datagroup description: Helper
Data group: Helper
Values
1 : bow
11
10+root
1
10
plot estimate
Rows indicating a "no" in plot estimate are not part of the woody debris inventory, but additional data to construct allometries from tree individuals. Often the first entry for an allometry does count as a woody debris item, but the remaining pieces of that item should be ignored and estimated based on the allometries. Or the allometries are not used to extrapolate the biomass of the first item (for example a tree dbh).
Data group: Allometries
Keywords: allometries
Values
no
pos.af
Positioning information: Classification of woody debris item as used by Anja Fankhänel during the inventory, modified from the classification of Christian and Goddert.; Woody debris type; Dead wood inventory
Data group: Woody debris type
Keywords: woody debris, co-variable
Values
11
10+root
10
1
1 : bow
alive
L: still live; may apply to categories 2, 3, 4 of positioning (pos); can be used for live trees that served as donators of broken snags or to include trees that will soon be dead, but still have some green leavesLiving status; Datagroup description: Living status; Datagroup description: if an organism is dead or alive
Data group: Living status
Keywords: co-variable, mortality
Values
l
l/d
d
sc
percent of soil contact of the wood
Unit: percent
Data group: Soil contact
Keywords: soil, co-variable
Values
1
0
100
10
15
mc
mortality cause
Data group: Mortality cause of downed wood
Keywords: co-variable, mortality
Values
3
1.3
2
1
[1]
dc
decay class of downed wood
Data group: Decay class of downed wood
Keywords: decomposition, co-variable
Values
[1]
3
0
2
1
ter
presence of termites
Data group: Organisms found on or in specimen
Keywords: termites, co-variable
Values
t termites
termites (+)
Insects
rot
presence of red mould
Data group: Organisms found on or in specimen
Keywords: co-variable, red mould
Values
white mould
brown mould
red mould (+)
fungi
presence of fungi
Data group: Organisms found on or in specimen
Keywords: fungi, co-variable
Values
fungi (+)
valid
valid percentage of volume for volume calculation; valid volume: Percent of volume valid for calculation, there may be stumps or woody pieces which are not round, or hallow, or half is missingWoody debris dimensions
Data group: Woody debris dimensions
Keywords: response variable, size
Values
0.4
0.15
0.1
0.3
0.2
crown_origin
metal tag of the tree from which the crown originatesCSP metal tag number (trees, woody debris); Datagroup description: CSP tree individuals were marked mostly with metal tags but also additional tags were used. Very few metal tag numbers were double across CSPs. For a unique ID across CSPs see the Data Group "Tree identifier for trees in the comparative study sites". Other projects might have used non metal tags with custom numbers. E. g., white tags might hold numbers defined for additional trees of the SP5 subproject. --- 6 digit metal tags starting with 3 were also used for woody debris items
Data group: CSP metal tag number (trees, woody debris)
Keywords: location
Values
363073
363533
363088
363513
363579
remark
further remarks on this dataHelper
Data group: Helper
Values
10% left, termite
20% loss, termite
20% left
-
10% left
vol_factor
volume factor is about how much is left of the volume of a decaying trunk. So that "valid" refers to the outer form of the item and "vol_factor" is within the object. Both should be multiplied to get the volume of wood.
Data group: Woody debris dimensions
Keywords: response variable, size
Values
0.2
0.3
0.15
0.4
0.1
Allometrie
"allo" indicates that the items (rows) belong to a larger object (same CWD_ID). Together they can be used as allometries for the estimation of other objects. This means, that for example a broken crown is measured with all branches. These branches should be added up to a crown volume and then other crowns can use this estimate, even if only their basal diameter is measured and not all branches.; Datagroup description: Allometries for estimating biomass functions from basal diameter measurements.
Data group: Allometries
Keywords: allometries
Values
Allo of multistem!
allo?-living data!
allo
comment Karin
comment on the whole row; Datagroup description: Helper
Data group: Helper
Values
how can this have a dbh if it belongs to the previous standing trunk?
how can this have a dbh, if it is broken at 40 cm?
Evodia is not found in the species list from Helge; the stem tag is not found in the sp1 biomass file
changed pos.af from 8 to 9, since the following entries did not have decay class, species etc, looks like a complete branch measured
dtop was 1.1, but that does not make sense, assume that 1.1 is height
meandbh
merging the dbh column the extrapolated dbh column (dbhpostmean); Diameter at breast height;; Instrumentation: diameter tape, calliper (derived from datagroup); Instrumentation: diameter tape, calliper (derived from datagroup)
Unit: centimeter
Data group: Diameter at breast height
Keywords: response variable, dbh
Values
10
10.5
10.2
10.6
10.475998
meanGr10
Indicating if the dbh (measured or extrapolated) is greater than 10cm and should be considered in volume estimation in the central and outer subplots.Helper; Datagroup description: Helper
Data group: Helper
Keywords: location
Values
1
meanSm10Cn
Indicating if the dbh (measured or extrapolated) is smaller then 10cm and thus schould only considered in volume estimation of the central subplotHelper; Datagroup description: Helper
Data group: Helper
Keywords: location
Values
1
ice_storm_representative
Indicator for trees that can be considered dead because of the ice storm. This cares for double counting of debris objects. The script "ice_storm_trees.r" shows how this column was derived.; Datagroup description: Helper
Data group: Helper
Keywords: object, stem
Values
yes
no