Main Experiment: Site A - Herb layer community functional traits

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BEF-China: SP11

Dataset Abstract

The BEF- China experiment provides the opportunity to study the effects of tree layer diversity and composition on herb layer species richness, composition and invasibility in subtropical China.
SP 11 studied the interaction between tree layer diversity, herb layer diversity and invasibility in highly diverse subtropical forests. Using observations and experimental approach, we investigated the impact of tree species richness on herb layer assembly and invasibility and quantified feedback effects of herb layer on growth and survival of trees. We use measurements of functional traits of herbaceous species and indices of functional diversity of the herb layer to predict invasibility by other plant species with particular functional traits and test if invasions will be complementary, i.e. increasing functional diversity in the herb layer. Additionally we focused on herb layer characteristics to use these variables as response variables to tree layer richness.

Dataset Design

To characterize functional traits of the herb layer community, 5-10 individuals per species were randomly selected from the full area of Site A in Xingangshan.
100 common herb layer species could be recorded.
For these individuals, the height, number of leaves, flowers / seeds were recorded during the period from 2010-08-20 to 2010-08-30. In addition, the dry weight of the aboveground biomass of the shoots and leaves were taken.
From each of the three individuals, fully developped leaves were randomly sampled and fresh weight and dry weight were determined, separately for each leaf. SLA was determined by means of the program WinFOLIA PRO 2008; the C / N ratio of the leaves was calculated following measurements on the vario EL elemental analyzer at the Institute of Biology / Geobotany and Botanical Garden in Halle. Mean values were calculated for each individual and afterwards for each species.

Spatial Extent

Main experiment, Site A, no shrub VIPs
29°08'-29°11'N
117°90'-117°93'E

Temporal Extent

functional traits were recorded from 2010-08-20 till 2010-08-30

Taxonomic Extent

woody and herbaceous species of the herb layer community on Site A

Data Analysis

Recorded functional traits are: individual height, number of flowers / seeds, number of leaves, SLA, LDMC, LMR and C / N ratio of leaves.
For details see data group description.

Data columns available in the raw data part of this dataset

species
identity of 100 species of the herb layer community on site A
Data group: Scientific plant species name
Keywords: species
Values
Adinandra millettii
Actinidia eriantha
Acalypha australis
Actinidia chinensis
Akebia trifoliata
date
functional traits were recorded during 2010-08-20 till 2010-08-30; mean date is given
Data group: Date time information
Keywords: date
Values
2010-08-25
height
height
Unit: cm
Data group: Plant height
Keywords: functional trait, height
Values
0
101.08333333333333
101.25
10
100
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.
number_flowers_seeds
mean amount of flowers/seeds of 5-10 individuals per species
Data group: Reproductive organs
Keywords: herbs, functional trait, reproductive organs
Values
0.25
10.8
1
0
11
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.
SLA
mean specific leaf area (SLA) of 3 leafs per individual of 5-10 individuals per species; Instrumentation: program WinFOLIA PRO 2008
Unit: squareMeterPerKilogram
Data group: Specific leaf area
Keywords: herbs, functional trait, SLA
Values
0.15219229166666648
0.013857307692307693
0.07921369505494506
0.041788571428571425
0.02280809523809524
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.
LDMC
mean leaf dry matter content of 3 leafs per individual of 5-10 individuals per species
Unit: milligramsPerGram
Data group: Leaf dry matter content
Keywords: herbs, functional trait, LDMC
Values
155.63967894850248
160.773383097637
145.0426753985721
159.56784746418893
108.88040863120388
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.
LMR
mean leaf mass ratio of 5-10 individuals per species
Unit: numberOfLeavesPerGram
Data group: Above and below ground biomass measurement
Keywords: herbs, functional trait, LMR
Values
0.24568817818389488
0.04910961999575786
0.2590439456276708
0.2106873984662875
0.19781387546714288
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.
amount_leaf
mean number of leaves of 5-10 individuals per species
Data group: Plant leaf number
Keywords: herbs, functional trait, leaf
Values
1050.5234762534114
110.80349344978166
108.40556702161572
116.80786435786436
10.959632370570418
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.
CN
C/N ratio leaf; Datagroup description: leaves of 5-10 individuals of each species were ground and mixed, three samples per species were analyzed; Instrumentation: Elementaranalysator vario EL; Martin-Luther University Halle-Wittenberg; Institute of Biology/ Geobotany and Botanical Garden
Data group: Carbon Nitrogen ratio
Keywords: herbs, functional trait, C/N ratio
Values
14.108766586276095
13.913051622621373
12.095107939267914
11.933986470811082
13.654028616181389
* Cornelissen, J., Lavorel, S., Garnier, E., Diaz, S., Buchmann, N., et al. (2003). A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51, 335–380 also contributed to this column.