Main Experiment: Trap nest data Site A preliminary

Usage Rights

This data is Free for members.

Dataset Abstract

Trap nests (eigth traps per plot; four traps each attached to a wooden post; located at two randomly selected corners the corners of the central 10 x 10 m subplot; traps belonging to the same wooden post in a plot are marked with a "-" or left without such a mark) were used to collect solitary bees and wasps in SIte A. Abundance and species richness of bees and wasps allow to test to what extent woody plant species richness affects the abundance, species composition and diversity of, e.g. predators (which might profit from higher structural diversity or better resource availability in more plant diverse plots) or pollinators (which might profit from more diverse flower resources). Traps consisted of plastic tubes (diameter 12.5 cm, length 22 cm) that were filled with dried internodes of the ree Arundo donax L. (2-20 mm diameter). Trap nests were exposed from August 2011 to June 2013. All trap nests were monthly checked for nests of solitary bees and wasps that were reared in the laboratory till hatching. Taxa were first sorted to morphospecies and then identified to species level with the help of taxonomic experts whenever possible.

Dataset Design

Trap nests (eigth traps per plot; four traps each attached to a wooden post; located at two randomly selected corners of the central core area)

Spatial Extent

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

Temporal Extent

August 2011 - June 2013

Taxonomic Extent

Solitary cavity-nesting Hymenoptera

Data Analysis

The data allow to test to what extent woody plant species richness affects the abundance, species composition and diversity of, e.g. predators (which might profit from higher structural diversity or better resource availability in more plant diverse plots) or pollinators (which might profit from more diverse flower resources) --- As in Hymenoptera most ecological information is shared between members of a family, the family names are provided as separate data colum. ---- Individual numbers presented are brood cell numbers, i.e. the number of brood cells provisioned by each species in a given trap.

Data columns available in the raw data part of this dataset

PTAG
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.
Data group: BEF research plot name
Keywords: location
Values
p103320
p105290
p105310
p102350
p105330
Trap_nest
Location of the trap nest
Data group: Trap location within the respective Site A plot.
Keywords: plot, location
Values
p102350_II
p102350_II-
p102350_I
p102350_III-
p102350_III
* Peters, J., Methorst, J., These persons could not be matched within the portal: Merle Noack, Zhanghong Qi also contributed to this column.
Family
Family of the species.
Data group: Higher arthropod taxa
Keywords: family, taxon
Values
Sphecidae
Pompilidae
Megachilidae
Vespidae
Crabonidae
Species
Species name; Datagroup description: Bees and wasps were identified with the help of taxonomic experts. Sphecidae/Crabonidae: Michael Ohl, Megachilidae: Chao-Dong Zhu, Vespidae: Tingjing Li
Data group: Bee/wasp species name
Keywords: species, taxon
Values
Auplopus_sp.1
Ancistrocerus_parapoloi
Apodynerus_yayeyamensis
Anterhynchium_flavomarginatum
Allorhynchium_chinense
* These persons could not be matched within the portal: Michael Ohl, Chao-Dong Zhu, Tingjing Li also contributed to this column.
Brood_cells
Number of brood cells collected per species from trap nests.; Datagroup description: Organism count
Data group: Abundance
Keywords: abundance
Values
1
10
12
11
13