BEF-China | Main Experiment: Leaf toughness of individual trees in the Main Experiment (Site A and B)

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Title:

Main Experiment: Leaf toughness of individual trees in the Main Experiment (Site A and B)

Access rights:

Free for public

Usage rights:

Prof. Helge Bruelheide, David Eichenberg, Wenzel Kröber

Published:

No information available

Abstract:

Leaf toughness assessed on individual trees of species growing on the Experimental Sites of BEF China. For each tree seven leaves were sampled in most cases. Every single value for every leaf is given. Exceptions were made in species with very small leaves (e.g. Loropetalum chinense). Here, we present mean values for every individual from several leaves (indicated in the Column "Individual Sample")

Design:

Leaf samples were taken from sun-exposed branches with an expandable pruner. Only completely developed leaves were sampled, without visible herbivore damage and preferably free of leaf fungi. Seven leaves were collected per individual and the majority of species was sampled in five to seven Plots within the experimental site. Every species was sampled only from one individual per plot, wherever suitable. Rare species had a lower number of individual replicates.

Spatial extent:

Experimental Sites of the BEF China Project 29°08'-29°11'N 117°90'-117°93'E

Temporal extent:

Sampling excursions in 2011 and 2012

Taxonomic extent:

Tree and shrub species in the Main Experiment of BEF China

Measurement cirumstances:

No information available

Data analysis:

Data analysis

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Dataset column

Name:

Samplecode

Definition:

Identifier; Combination of characters and number allowing a specific identification of the respective specimen within the tested individual

Unit:

No information available

Datagroup:

Helper

Keywords:

sample identity

Values:

Ace_dav_LT_2
Ail_alt_LT_2
Ace_dav_LT_3
Ail_alt_LT_1
Ace_dav_LT_1

Contributors:

No information available

Dataset column

Name:

Sample Collector

Definition:

Indicating the person who collected the sample in the field; these can be contacted via the header "Staff" which is given on the dataportal of the BEF-China project (http://china.befdata.biow.uni-leipzig.de/). Some scientists may also be found under the subheader "Alumin"

Unit:

No information available

Datagroup:

Helper

Keywords:

No information available

Values:

Wenzel Kroeber
David Eichenberg

Contributors:

No information available

Dataset column

Name:

Species

Definition:

Species name; Datagroup description: Scientific plant species name; Source: Flora of China; Datagroup description: Scientific plant species name

Unit:

No information available

Datagroup:

Scientific plant species name

Keywords:

species, taxon

Values:

Ailanthus altissima
Alniphyllum fortunei
Betula luminifera
Camellia chekiangoleosa
Acer davidii

Contributors:

No information available

Dataset column

Name:

Year_Collected

Definition:

Additional information on the year when the respective sample was collected; this allows for deciding, whether samples are dependent or independet (e.g. in time series anaysis), if the same individual was sampled in several years.; Datagroup description: Date time information

Unit:

No information available

Datagroup:

Date time information

Keywords:

year, explanatory

Values:

2012
2011

Contributors:

No information available

Dataset column

Name:

Identifier

Definition:

Allows to uniquely identify the respective specimen. This allows to identify the individual from which the respective replicate sample was taken (e.g. if you want to calculate the mean values of a trait for each individual). It can also be used when other people have specific questions about the particular sample.

Unit:

No information available

Datagroup:

Identifier

Keywords:

No information available

Values:

Ace_dav_LT_1
Ace_dav_LT_3
Ail_alt_LT_1
Ace_dav_LT_2
Ail_alt_LT_2

Contributors:

No information available

Dataset column

Name:

Exp_Site

Definition:

Indicator on which site of the Main Experiment (A or B) the Samples were collected

Unit:

No information available

Datagroup:

Experimental Site

Keywords:

Main Experiment, plant position

Values:

A
B

Contributors:

No information available

Dataset column

Name:

Exp_vicinity

Definition:

Some individuals were not sampled within a study plot, but e.g. in close vicinity to this plot. This column gives hints where the respective sample was collected.; Datagroup description: Some samples were not directly sampled within the experimental sites but were young recruits at the outer margin of the sites. This column gives information about where the sample was taken.

Unit:

No information available

Datagroup:

Experimental Site

Keywords:

Main Experiment, plant position

Values:

B
Unknown

Contributors:

No information available

Dataset column

Name:

Exp_Plot

Definition:

Indiciating in which plot within respective the experimental site the sample was taken

Unit:

No information available

Datagroup:

Plot name Main experiment (letter, number code)

Keywords:

Main Experiment, plant position

Values:

F24
E24
E25
E29
F23

Contributors:

No information available

Dataset column

Name:

Exp_Plot_Position

Definition:

4 digit Code gives xxyy position in the experimental plot

Unit:

No information available

Datagroup:

Tree or shrub position within experimental plot

Keywords:

Main Experiment, plant position

Values:

0010
0001
0104
0005
0011

Contributors:

No information available

Dataset column

Name:

TAG

Definition:

TAG given on the barcode labels on every tree individual.

Unit:

No information available

Datagroup:

t or s TAG Main Experiment

Keywords:

No information available

Values:

t106280010608
t106280010512
t106280011811
t106270011701
t106290011814

Contributors:

No information available

Dataset column

Name:

neighbour tree TAG

Definition:

Some of the individuals collected here did not have a tTAG (maybe not yet added or lost due to environmental conditions, e.g. rain or sun). In such cases, the most proximate neighbout was searched and the tTAG was added in order to allow for a coarse location identification of the respective tree.

Unit:

No information available

Datagroup:

t or s TAG Main Experiment

Keywords:

shrub individual, shrub position, shrub

Values:

t206260010303
t205290010209
t205240011718
t206290011103
t206260010204

Contributors:

No information available

Dataset column

Name:

shrub TAG

Definition:

Unique Identifier for the respective shrub individual; can be used to reference the individual to geographical and genetic information on the experimental sites.

Unit:

No information available

Datagroup:

t or s TAG Main Experiment

Keywords:

shrub individual, shrub position, plant position, shrub

Values:

s108280030714
s110280030417
s107270031819
s108270030709
s112210030417

Contributors:

No information available

Dataset column

Name:

Individual Sample

Definition:

Up to seven leaves were sampled per each individual. This column indicates which leaf was tested.

Unit:

No information available

Datagroup:

Helper

Keywords:

tree individual, shrub individual

Values:

2
14
1
10
3

Contributors:

No information available

Dataset column

Name:

Leaf toughness

Definition:

Instrumentation: Hendry, G.A.F. and Grime, J.P. 1993. Methods in comparative plant ecology: a laboratory manual. G. A. F. Hendry, Grime JP, editors. London: Chapman & Hall. 252 p. (derived from datagroup) (derived from datagroup);

Unit:

N/mm

Datagroup:

Leaf toughness

Keywords:

tree individual, shrub individual, explanatory, individual based values, Leaf tensile strength

Values: