BEF-China | Main Experiment: Soil lipid fractions from the main experiment Site A 2013

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Title:

Main Experiment: Soil lipid fractions from the main experiment Site A 2013 - preliminary

Access rights:

Private

Usage rights:

No information available

Published:

No information available

Abstract:

Individual soil lipid fractions from site A and B from the Main Experiment.

Design:

Plots in the Main Experiment of the BEF-China experiment are planted with trees in distinct diversity levels with the same tree individual density. Soil samples were taken between individual trees… Soil was analysed using machine x and procedure y.

Spatial extent:

Main Experiment of the BEF-China Experiment, sites A and B, Xingangshan, China. 29°08'-29°11'N 117°90'-117°93'E

Temporal extent:

No information available

Taxonomic extent:

bacterial or fungal communities based on lipid indicators, the fungal to bacterial ratio, or total microbial biomass (lipid biomass). See column descriptions for more detail about individual lipid indicators.

Measurement cirumstances:

No information available

Data analysis:

Microbial biomass: all lipids less than 20 carbons in length were summed to give the total biomass. Lipids were otherwise used according to specific microbial indicator groups and either the abundance (nmol lipid g dry wt-1) or in relative abundance (abundance divided by total lipid biomass). Data were then analyzed in R using multivariate (NMDS) or univariate (co-variate regressions and ANOVA) methods. The columns of CSP name, depth, and horizon name are explanitory variables, the response columns are the lipid biomass, fungal to bacterial ratio, and the individual fatty acid indicators --- note that the age classes analyzed here are not the most current age classes. They were changed, but analysis was already deep underway on the paper at that point.

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Dataset column

Name:

TAG

Definition:

code for planting locations, 12 digits with "t" in front; Datagroup description: Tree or shrub tags consist of 12 digits: The first 6 are the site plot name: _1_ site _2/3_ row, counting from North _4/5_ column, counting from west _6_ is the plot moved? Is it a quarter plot? The next 6 digits describe the tree individual _7/8_ type of individual (01 planned tree, 02 other tree than planted but in a given plot somewhere, 03 planned shrub, 04 other shrub within this plot) _9/10_ x grid position within plot, starting from southwest northwards _11/12 y grid position, starting from southwest eastwards.

Unit:

No information available

Datagroup:

t or s TAG Main Experiment

Keywords:

GIS, tree individual, location

Values:

t110270011117
t110270011200
t110270011118
t110270011119
t110270011116

Contributors:

No information available

Dataset column

Name:

PTAG

Definition:

plot code, BEF research plot name, 6 digits with "p" in front; Datagroup description: Research plots of the Biodiversity - Ecosystem functioning experiment (BEF-China). 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 B. 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:

Main Experiment, Site A, location

Values:

p110270

Contributors:

No information available

Dataset column

Name:

PLOT_NO

Definition:

name of each plot, coded with letters and numbers

Unit:

No information available

Datagroup:

Plot name Main experiment (letter, number code)

Keywords:

Main Experiment, Site A, location

Values:

J27

Contributors:

No information available

Dataset column

Name:

TRTM_NO2

Definition:

treatment acronym in experimental sites

Unit:

No information available

Datagroup:

Treatment acronym in experimental sites

Keywords:

random extinction, extinction treatment, explanatory, design variable

Values:

A_2_4_2

Contributors:

No information available

Dataset column

Name:

CELL_X

Definition:

within plot x grid position starting at 0 and ending at 19, starting at south west corner

Unit:

number

Datagroup:

Tree or shrub position within experimental plot

Keywords:

location

Values:

11
12

Contributors:

No information available

Dataset column

Name:

CELL_Y

Definition:

within plot y grid position starting at 0 and ending at 19, starting at south west corner

Unit:

number

Datagroup:

Tree or shrub position within experimental plot

Keywords:

location

Values:

16
17
00
18
19

Contributors:

No information available

Dataset column

Name:

SPEC_N_

Definition:

species name, originally planned species; Source: Flora of China, Helge Bruelheide (derived from datagroup)

Unit:

No information available

Datagroup:

Scientific plant species name

Keywords:

species

Values:

Cyclobalanopsis myrsinifolia
Castanopsis eyrei

Contributors:

No information available

Dataset column

Name:

depth

Definition:

approximate soil depth from which the sample originates, compare the lipid overview dataset for a lookup to combine the sample with the soil base in Tübingen

Unit:

No information available

Datagroup:

Soil depth

Keywords:

soil depth

Values:

10-30cm
10-20cm
0-5cm
0-10cm
20-30cm

Contributors:

No information available

Dataset column

Name:

lipid

Definition:

Lipid type; ; Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup); Source: Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup)

Unit:

No information available

Datagroup:

Phospholipid fatty acid profiles (PLFA)

Keywords:

fungi, soil lipids, fatty acid, actinomycetes, bacteria, Gram-positive bacteria, Gram-negative bacteria, AMF, arbuscular mycorrhizal fungi

Values:

12:0

Contributors:

No information available

Dataset column

Name:

Abundance

Definition:

abundance of the fatty acid, fatty acid class is saturated, not a specific microbial indicator; ;; ; Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup); Source: Wu et al., 2012 (see metadata sheet, doi:10.1007/s10021-012-9533-3) (derived from datagroup)

Unit:

nmol g dry soil-1

Datagroup:

Abundance

Keywords:

biomass, abundance

Values: