Main Experiment: Trophobioses data site B 2014

Usage Rights

This data is Private.

Dataset Abstract

We sampled trophobioses from 29 May to 31 July 2014 and 11 September to 8 October on site A and B dayly alternating between sites (for information on the trophobioses on Site A in 2014 see dataset 566). We selected in total 150 plots from tree diversity level 1, 2, 4, 8 and 16 at both field sites. As the abundance of a tree species in a plot decreases with increasing tree diversity, we increased the number of sampled trees per plot accordingly, summing up to a total of 10 359 trees which were sampled once each. On each tree, 20 randomly selected young leaves and the attached branch sections were visually inspected for the occurrence of sap-sucking Hemiptera and honeydew-collecting ants. Voucher specimens of each trophobiosis were collected with soft insect forceps and stored in 99% ethanol. Hemiptera were grouped into morphospecies and further identified in the lab. Ants were first assorted to genera with Bolton (1994) and then identified to species level whenever possible with primary taxonomic literature and the Antweb Database (www.antweb.org). In a few cases Hemiptera and ants could only be identified to morphospecies, which we also refer to as species.

Spatial Extent

BEF China Main Experiment, Site A, near Xingangshan, Jiangxi

Temporal Extent

Mai 2014 - July 2014 (Spring) and September 2014 - October (Autumn)

Taxonomic Extent

Sap-sucking Hemiptera and honeydew-collecting ants

Data Analysis

The data unit of all data is the number of occurrence of trophobiosis, i.e. every interaction between a Hemiptera and an ant species observed on an individual tree was only counted once, regardless of the number of individuals involved. Number of individual Ants and Hemiptera are the sum of the same trophobioses found on one tree.

Data columns available in the raw data part of this dataset

SEASON
Sampling season for trophobioses
Data group: Season
Keywords: time
Values
Spring
Autumn
PLOT_NO
Name of each plot, coded with letters and numbers in Site A
Data group: BEF research plot name
Keywords: location
Values
F23
F24
D25
E25
C27
Tree_label
Position of a given tree individual per plot given in XXYY
Data group: Individual position within Pilot experiment
Keywords: Main Experiment, location
Values
0405
0407
0406
0408
0404
NB_trophobioses
Number of trophobiotic interactions observed.
Unit: count
Data group: Abundance
Values
2
3
1
10
4
Tree species
Tree species
Data group: Scientific plant species name
Values
Alniphyllum fortunei
Betula luminifera
Castanopsis eyrei
Castanopsis fargesii
Castanopsis sclerophylla
Hemiptera_species
Full taxonomic name of Hemiptera species
Data group: Hemiptera species name
Keywords: species, taxon, morphospecies
Values
Betacallis querciphaga
Aphis aurantii
Coccidae SP1
Cicada gelbgruen
Cervaphis quercus
NB_Hemiptera
Number of Hemiptera in trophobiotic interactions observed.
Unit: count
Data group: Abundance
Values
11
1
10
110
100
Ant_species
Full taxonomic name of ant species
Data group: Ant species name
Keywords: species, taxon
Values
Crematogaster rogenhoferi
Camponotus albosparsus
Camponotus pseudoirritans
Camponotus vitiosus
Camponotus cf. compressus
NB_ants
Number of Ants in trophobiotic interactions observed.
Unit: count
Data group: Abundance
Values
100
1
11
105
10