CSPs: Ice storm breakage probability trees species standardized for CSPs

Usage Rights

This data is Free for public.

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:

Nadrowski, K. (2016): CSPs: Ice storm breakage probability trees species standardized for CSPs. (Accessed through URL: http://china.befdata.biow.uni-leipzig.de/datasets/460)

Dataset Abstract

The probability of a tree stem to break from an ice storm, if a random species was picked. The data results as random plot effects from a random effects model including taxon (species) and plot as random factors. Thus, breakage probability is standardized for species, as if a "new" random species was chosen. See the attached graphic for a plot that shows standardized breakage probability over the percentage of broken stems. The latter is biased by the species composition of the plot.

Dataset Design

The underlying data combine both living and dead trees (dataset "Living or killed trees after the 2008 ice storm", http://china.befdata.biow.uni-leipzig.de/datasets/239).

Spatial Extent

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

Published

Model is published along paper proposal "Tree species traits but not diversity mitigate stem breakage in a subtropical forest following a rare and extreme ice storm" (http://china.befdata.biow.uni-leipzig.de/paperproposals/7)

Taxonomic Extent

tree species

Data Analysis

The random model was calculated with R: lmer_random_ml <- lmer(mort_rank_broken ~ 1 + (1|plot) + (1|family/species), data = resid_mort, REML = F). This represents a random effects model. We extracted random effects like this: ranef(lmer_random_ml)$plot. We excluded all individuals without at least a genus attribute. We further excluded individuals belonging to plant families with less than 5 individuals in the whole dataset. Thus, individuals from rare families are excluded. --- The resulting species standardized breakage probability for plots can be used for further plot based inspections of multifuncionality.

Freeformat files (1)

  • breakage_prob_over_perc_broken.pdf (5.88 KB)
    Graph showing species corrected probability of breakage across percent breakage per plot. Percent breakage is biased by the species composition of the plot.

Data columns available in the raw data part of this dataset

CSP
Number of the CSP.
Data group: BEF research plot name
Keywords: location, CSP
Values
CSP03
CSP05
CSP02
CSP01
CSP04
ice_breakage
species corrected breakage probability for each plot
Unit: probability
Data group: Stem breaking probability
Keywords: ice storm, extreme event, disturbance, survival
Values
-12.78304482
-114.3923783
-153.2387354
-138.3421558
102.9279568
* Baruffol, M., Kahl, A., Chi, X. also contributed to this column.
broken
number of stems broken
Data group: Helper
Values
1
10
14
15
0
presence
number of stems present, only individuals with genus name and from families with 5 or more individuals, thus rare families excluded
Data group: Helper
Values
101
102
107
103
105
perc_broken
percent of broken stems, attention: percentage is biased by species composition of the plot!
Data group: Helper
Values
0.018691589
0.025641026
0.019417476
0.01369863
0
* Baruffol, M., Kahl, A., Chi, X. also contributed to this column.