Main Experiment: Trophobioses data site A 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 data on Site B see dataset 567). 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
Autumn
Spring
PLOT_NO
Name of each plot, coded with letters and numbers in Site A
Data group: BEF research plot name
Keywords: location
Values
B35
C31
B34
B38/C38
C32
Tree_label
Position of a given tree individual per plot given in XXYY
Data group: Position within Main experiment plots
Keywords: Main Experiment, location
Values
0406
0405
0404
0407
0408
NB_trophobioses
Number of trophobiotic interactions observed.
Unit: count
Data group: Abundance
Values
1
3
10
2
4
Tree species
Tree species
Data group: Scientific plant species name
Values
Castanopsis sclerophylla
Castanea henryi
Castanopsis eyrei
Choerospondias axillaris
Acer davidii
Hemiptera_species
Full taxonomic name of Hemiptera species. In some cases, nominal taxa were assigned to non-identifiable species to allow for a separation of unknown but obviously morphologically different species
Data group: Hemiptera species name
Keywords: species, taxon, morphospecies
Values
Aphis odinae
Aphis gossypii
Aphis aurantii
Cervaphis quercus
Aphis citricidus
NB_Hemiptera
Number of Hemiptera in trophobiotic interactions observed.
Unit: count
Data group: Abundance
Values
1
104
1020
100
10
Ant_species
Full taxonomic name of ant species
Data group: Ant species name
Keywords: species, taxon
Values
Camponotus pseudoirritans
Camponotus vitiosus
Carebara altinodus
Camponotus albosparsus
Carinostigmus SP1
NB_ants
Number of Ants in trophobiotic interactions observed.
Unit: count
Data group: Abundance
Values
105
11
100
10
1