Main Experiment: Herbivore damage of tree individuals Site A summer 2011

Usage Rights

This data is Free within projects.

Data use is restricted to SP8. Please contact Andreas Schuldt for usage permission

Dataset Abstract

Leaf damage by insect herbivores can severely affect the growth and fitness of plants and is considered to play an important role in the maintenance of high tree diversity in (sub)tropical forests. The trees of the main experimental plantations of BEF China are strongly affected by herbivory and understanding patterns in plant growth, trait expression and other ecosystem processes thus requires incorporation of potential herbivory effects and knowledge of how herbivory may change across the tree diversity gradient. This dataset quantifies leaf damage by insect herbivores for the trees of the main experimental study plots. - Only living trees are included in the dataset. Dead trees, trees with no leaves and missing trees were deleted.

Dataset Design

Herbivory was measured on those trees which are also analysed by subproject (SP) 2, i.e., in the enlarged core area of each plot. In monocultures (16 large 4-mu plots and 34 small 1-mu plots per site) and two species-mixtures (8 large and 36 small plots per site), all trees in the enlarged core area of 6 x 6 individuals (= 36 trees) were measured. In species-mixtures with 4 species (4 large and 24 small plots per site), the core area to be measured comprised 9 x 9 individuals (= 81 trees) and in 8, 16 and 24 species-mixtures (2, 1 and 1 large and 18, 15 and 1 small plots, respectively, per site) the core area was 12 x 12 individuals (= 144 trees). On each large 4-mu plot, measurements were conducted in the core area of one of the four 1-mu subplots (i.e. in the VIP subplots). The degree of foliar damage by insects, defined as the combined removal of photosynthetic tissue by leaf-chewing, mining and galling (and, if visible, sucking) insects, was estimated using percentage classes of herbivore damage. Damage classes were defined beforehand and appropriateness of the estimates was checked by analysing samples of randomly collected leaves with optical scanning methods. Categories were then expressed as mean percentage of leaf tissue removal based on the scanned leaves. Herbivory was assessed for 21 fresh leaves (i.e. expanded in the current gowing season) on three randomly selected branches (7 leaves x 3 branches) of each tree individual to estimate overall damage levels for each individual. As additional data, the total number of leaves was estimated and the main damage type was recorded.

Spatial Extent

Main Experiment Site A
29°08'-29°11'N
117°90'-117°93'E

Temporal Extent

Summer 2011 (May-June)

Data columns available in the raw data part of this dataset

pos_id
identifier for the tree
Data group: t or s TAG Main Experiment
Keywords: tree, location, object
Values
t102340010407
t102340010408
t102340010404
t102340010406
t102340010405
plot
Study plot
Data group: Plot name Main experiment (letter, number code)
Keywords: location
Values
B36/C36
B34
B35
B38/C38
C31
spec_n
Species number of the tree individual
Data group: Species codes (Species numbers in the Main experiment)
Keywords: species
Values
12
13
1
10
11
leaves
Estimated number of leaves
Data group: Plant leaf number
Keywords: leaf, size
Values
1000
100
20
50
0
leaf1
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Keywords: leaf, herbivory
Values
52
0
0.6
7
26
leaf2
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Keywords: leaf, herbivory
Values
0.6
26
0
52
7
leaf3
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
26
52
7
0.6
0
leaf4
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0.6
52
7
26
0
leaf5
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0
0.6
26
7
52
leaf6
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0
52
26
7
0.6
leaf7
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
26
0
52
7
0.6
leaf8
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
260
52
26
0.6
0
leaf9
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0.6
52
0
26
7
leaf10
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0.6
0
52
7
26
leaf11
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0
26
7
52
0.6
leaf12
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0
26
0.6
52
7
leaf13
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
52
7
0
0.6
26
leaf14
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
52
26
0.6
7
0
leaf15
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0.6
0
26
52
7
leaf16
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
7
0.6
26
0
52
leaf17
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0
0.6
26
52
7
leaf18
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
26
52
7
0
0.6
leaf19
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
0
26
7
0.6
52
leaf20
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
7
0
26
52
0.6
leaf21
Percent leaf area damaged by herbivores
Data group: Herbivore damage
Values
26
0.6
0
52
7
mean_damage
Mean percent leaf damage over all leaves
Data group: Herbivore damage
Keywords: response variable, leaf, herbivory
Values
0
0.04
0.02857142857142857
0.04615384615384615
0.03333333333333333
date
Date of assessment
Data group: Date time information
Keywords: date
Values
2011-05-08
2011-05-06
2011-05-07
2011-05-09
2011-05-05
h1
Main type of herbivore C: chewer; G= galler; L= sucker; M= miner; R= R type herbivore; S= skeletonizer
Data group: Herbivore functional group
Keywords: functional group
Values
L
C
M
S
G
h2
Main type of herbivore C: chewer; G= galler; L= sucker; M= miner; R= R type herbivore; S= skeletonizer
Data group: Herbivore functional group
Keywords: functional group
Values
G
L
C
S
M
h3
Main type of herbivore C: chewer; G= galler; L= sucker; M= miner; R= R type herbivore; S= skeletonizer
Data group: Herbivore functional group
Keywords: functional group
Values
S
M
G
L
C
h4
Main type of herbivore C: chewer; G= galler; L= sucker; M= miner; R= R type herbivore; S= skeletonizer
Data group: Herbivore functional group
Keywords: functional group
Values
S
G
L
C