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Title:
Main Experiment: Trophobioses data site A 2011
Access rights:
Free for public
Usage rights:
This dataset can be used by any interested individual as long as the original publication is properly cited: Staab, M., Blüthgen, N. & Klein, A.M. (2015): Tree diversity alters the structure of a tri-trophic network in a biodiversity experiment. Oikos 124: 827-834. doi: 10.1111/oik.01723.
Published:
Staab, M., Blüthgen, N. & Klein, A.M. (2015): Tree diversity alters the structure of a tri-trophic network in a biodiversity experiment. Oikos 124: 827-834. doi: 10.1111/oik.01723.
Abstract:
We sampled trophobioses from 21 May to 20 August 2011 on site A. We selected in total 146 plots from tree diversity level 1, 2, 4, 8 and 16. Because there are only two plots with tree diversity 24, we did not study the highest available tree diversity level. 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 70% ethanol. In total, we found 194 independent trophobioses in 53 plots. Hemiptera were grouped into morphospecies and sent to taxonomic experts for further identification. 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.
Design:
No information available
Spatial extent:
BEF China Main Experiment, Site A, near Xingangshan, Jiangxi
Temporal extent:
Mai 2011 - August 2011
Taxonomic extent:
Sap-sucking Hemiptera and honeydew-collecting ants
Measurement cirumstances:
No information available
Data analysis:
The data unit of all data is the occurrence of a 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.

Filter:
Dataset column

Name:
PLOT_NO
Definition:
Name of each plot, coded with letters and numbers in Site A; Datagroup description: Reasearch plots of the Biodiversity - Ecosystem functioning experiment (BEF-China). There are three main sites for research plots in the BEF Experiment: Comparative Study Plots (CSP) in the Gutianshan Nature Reserve, having a size of 30x30m^2, measured on the ground. Main Experiment plots have a size of 1 mu, which is about 25x25m^2 in horizontal projection. Pilot Study Plots have a size of 1x1 m^2. Research plots on the main experiment have a "p" in front of their IDs and then a 6 digit code: Plots in the main sites A and B are named according to their position in the original spreadsheet, in which they were designed. They consist of 6 digits: _1st digit_: Site (1:A, 2:B), _digit 2and3_: southwards row: as in spreadsheets the rows are named from the top to the bottom; _digit 4 and 5_: westward column: as in the original spreadsheet, but the letters are converted to numbers (A=01, B=02); _6th digit_: indicator, if the plot has been shifted a quarter mu. Example: "p205260": "p" means that this is a plot that is specified. "2" means, that we are at site B. Now the coordinates of the south - west corner: "0526". Since "e" is the fifth letter of the alphabet, this is Plot E26. The last digit "0" means that this plot was not moved by a quarter of a Mu, as some sites in Site A. The 6th digit can also indicate the subplot within the plot. "5", "6", "7", "8" indicate the northwest, northeast, southeast, and southwest quarter plot respectively.
Unit:
No information available
Datagroup:
BEF research plot name
Keywords:
location
Values:
B34
C37
D31
C31
B38
Contributors:
No information available

Dataset column

Name:
TREE_R
Definition:
Planned tree species richness according to design.; Datagroup description: Planted number of tree species per plot
Unit:
No information available
Datagroup:
Taxonomic biodiversity
Keywords:
biodiversity
Values:
8
16
1
2
4
Contributors:
No information available

Dataset column

Name:
Tree_label
Definition:
Position of a given tree individual per plot given in XXYY; Datagroup description: There are 20x20 trees per plot. Tree_label marks the position of each tree in a coordinate system starting at 0000.
Unit:
No information available
Datagroup:
Individual position within plot in Site A or B (given by SP1/SP2)
Keywords:
Main Experiment, location
Values:
0408
0406
0405
0411
0407
Contributors:
No information available

Dataset column

Name:
Tree_species
Definition:
Taxonomic name of tree species. For easier workflow during analysis, words were separated by "_"
Unit:
No information available
Datagroup:
Helper
Keywords:
species, taxon
Values:
Cyclobalanopsis_myrsinaefolia
Castanopsis_sclerophylla
Castanea_henryi
Cyclobalanopsis_glauca
Choerospondias_axillaris
Contributors:
No information available

Dataset column

Name:
Tree_species_Tax
Definition:
Full taxonomic name of tree species
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
species, taxon
Values:
Castanea henryi
Castanopsis sclerophylla
Cyclobalanopsis myrsinifolia
Choerospondias axillaris
Cyclobalanopsis glauca
Contributors:
No information available

Dataset column

Name:
Ant_species
Definition:
Taxonomic name of ant species. For easier workflow during analysis, words were separated by "_". Species and Morphospecies are combined informations given in this column.
Unit:
No information available
Datagroup:
Helper
Keywords:
species, taxon
Values:
Camponotus_vitiosus
Crematogaster_cf._nawai
Carebara_sp.5
Camponotus_pseudoirritans
Crematogaster_rogenhoferi
Contributors:
No information available

Dataset column

Name:
Ant_species_Tax
Definition:
Full taxonomic name of ant species
Unit:
No information available
Datagroup:
Ant species name
Keywords:
species, taxon
Values:
Iridomyrmex anceps
Camponotus vitiosus
Crematogaster cf. nawai
Crematogaster rogenhoferi
Camponotus pseudoirritans
Contributors:
No information available

Dataset column

Name:
Ant_morphospec
Definition:
Ant_morphospec
Unit:
No information available
Datagroup:
Nominal taxon
Keywords:
No information available
Values:
Prenolepis sp.6
NA
Carebara sp.5
Nylanderia sp.3
Contributors:
No information available

Dataset column

Name:
Hemiptera_species
Definition:
Taxonomic name of Hemiptera species. For easier workflow during analysis, words were separated by "_". Species and Morphospecies are combined informations given in this column.
Unit:
No information available
Datagroup:
Helper
Keywords:
species, taxon
Values:
Centrotinae_Larvae_2
Aphis_sp.1
Centrotinae_Larvae_1
Aphis_odinae
Centrotinae_sp.2
Contributors:
No information available

Dataset column

Name:
Hemiptera_species_Tax
Definition:
Full taxonomic name of Hemiptera species
Unit:
No information available
Datagroup:
Hemiptera species name
Keywords:
species, taxon
Values:
Cervaphis quercus
Aphis odinae
Eutrichosiphum sclerophyllum
Diphyllaphis quercus
Eutrichosiphum dubium
Contributors:
No information available

Dataset column

Name:
Hemiptera_morphospecies
Definition:
Hemiptera samples that could only be identified to morphospecies
Unit:
No information available
Datagroup:
Nominal taxon
Keywords:
morphospecies, Hemiptera
Values:
Aphis sp.1
Centrotinae sp.2
Centrotinae Larvae 2
Centrotinae Larvae 1
Centrotinae sp.3
Contributors:
No information available

Dataset column

Name:
interaction
Definition:
Number of trophobiotic interactions observed.
Unit:
occurrences
Datagroup:
Trophobiosis (count)
Keywords:
No information available
Values:
1
Contributors:
No information available

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23 klein medium

Alexandra-Maria
Klein

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Michael
Staab

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Nico
Blüthgen

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