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Title:
BEFmod: Herb layer composition within the integrated BEFmod experiment (C, P, NW) - Site A
Access rights:
Private
Usage rights:
No information available
Published:
No information available
Abstract:
In forests, the herbaceous understory vegetation plays an important role for ecosystem functioning as it represents a significant component of total aboveground productivity. In addition, the herb layer contributes to overall forest species richness and controls tree species regeneration. Vice versa, trees in the overstory control understory herb and shrub growth through competition for resources. Using an experimental forest plantation with manipulated tree richness we asked to which degree tree species richness and identity affect herb layer composition, richness and productivity and how these relationships across strata change with abiotic environmental conditions and competition intensity. In the context of the Biodiversity-Ecosystem Functioning project in subtropical China (BEF-China), we made use of the integrated BEFmod experiment arranged along a tree species richness gradient at two sites, with additional subplot treatments of phosphorus addition, herb layer weeding and no weeding. We recorded the understory vegetation and determined herb layer biomass production on a total of 201 subplots.
Design:
In all plots in BEF-China (including C, P, F and I treatment) the herb layer has been continuously weeded twice a year, (since 2009 and 2010, for site A and site B, respectively) and since 2014 once a year on both sites to increase the establishment of planted trees. In each VIP, subplots were subjected to a manipulation of resource supply and biotic interactions (BEFmod experiment), which started in 2014. On the northern edge of each VIP, 5 subplots were established, each measuring 5.16 x 5.16 m and containing 4 × 4 trees. Subplots were randomly assigned to five different treatments: “No weeding“ (NW, i.e., admitting all types of weeds, already established in 2011), “Phosphorus fertilization” (P, i.e., applying 40 g triple super phosphate (H2PO4)2 per tree, corresponding to 100 kg P/ha once in April 2014), and “Control” (C, i.e., weeding as on the total plot level together with monthly H2O application). The BEFmod comprises two further treatments (F, i.e. Fungicide application, and I, i.e. Insecticide application), which we do not refer to in the present study. Herb layer data were collected in the NW, P and C treatments. Herb layer species composition was recorded in 33 and 34 VIPs at site A and B, respectively, (three plots had to be omitted for accidental weeding and due to missing environmental data leading to 201 sublots in total). All herb layer species were identified and cover was estimated separately for each species. The herb layer was defined as all vascular plants including herbaceous species, climbers, ferns as well all woody seedlings and saplings with < 1.0 m height.
Spatial extent:
VIP Plots of the main experiment on Site A
Temporal extent:
No information available
Taxonomic extent:
No information available
Measurement cirumstances:
No information available
Data analysis:
No information available

Filter:
Dataset column

Name:
PTAG
Definition:
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:
VIP plots, plot
Values:
p106210
p105310
p103320
p105330
p105340
Contributors:
No information available

Dataset column

Name:
Plot
Definition:
Plot number on Site A; VIPs and each 1 mu replicate on Site A
Unit:
No information available
Datagroup:
Helper
Keywords:
Main Experiment, Site A, plot
Values:
E31
C32
E34
F21
E33
Contributors:
No information available

Dataset column

Name:
treatment
Definition:
treatment of each subplot: C-Controll; P-Phosphorus fertilization; NW-No weeding
Unit:
No information available
Datagroup:
BEFmod subplots treatment
Keywords:
treatment, BEFmod
Values:
P
NW
C
Contributors:
No information available

Dataset column

Name:
date
Definition:
date for vegetation assessment from 2014-08-11 till 2014-09-08
Unit:
No information available
Datagroup:
Date time information
Keywords:
date
Values:
13.08.2014
15.08.2014
11.08.2014
12.08.2014
14.08.2014
Contributors:
No information available

Dataset column

Name:
species
Definition:
species identity of the herb layer community by Subplot; The scientific species fullnames are based on the "Flora of China" identified by Markus Germany. Scientific species names consist of epithet and genus. For identification, the Author name and the year of the publications of the description are required.
Unit:
No information available
Datagroup:
Scientific plant species name
Keywords:
herb layer, species
Values:
Adiantum flabellulatum
Actinidia eriantha
Achyranthes bidentata
Acalypha australis
Actinidia chinensis
Contributors:
No information available

Dataset column

Name:
lifeform
Definition:
lifeform of each species: herb; wood; fern; grass
Unit:
No information available
Datagroup:
Plant functional group or life form
Keywords:
functional group
Values:
wood
fern
h
grass
Contributors:
No information available

Dataset column

Name:
cover
Definition:
cover of species in the herb layer community by subplot; Total cover of herb layer species estimated to 0.1 percent per survey plot
Unit:
percent
Datagroup:
Vegetation layer cover
Keywords:
vegetation cover, herb layer
Values:
0.3
0.4
0.1
0.5
0.2
Contributors:
No information available

Dataset column

Name:
cover_f
Definition:
Estimated total cover of ferns per subplot
Unit:
percent
Datagroup:
Vegetation layer cover
Keywords:
vegetation cover, ferns
Values:
15
12
1
0
10
Contributors:
No information available

Dataset column

Name:
cover_w
Definition:
Estimated total cover of woods (< 1m in height) per subplot
Unit:
percent
Datagroup:
Vegetation layer cover
Keywords:
vegetation cover, woods
Values:
100
20
10
25
30
Contributors:
No information available

Dataset column

Name:
cover_g
Definition:
Estimated total cover of grass per subplot
Unit:
percent
Datagroup:
Vegetation layer cover
Keywords:
vegetation cover, grass
Values:
0.7
0.5
10
1
0
Contributors:
No information available

Dataset column

Name:
cover_h
Definition:
Estimated total cover of herbs per subplot
Unit:
percent
Datagroup:
Vegetation layer cover
Keywords:
vegetation cover, herbs
Values:
0.2
0.5
0
0.3
0.1
Contributors:
No information available

Dataset column

Name:
cover_total
Definition:
Estimated total cover of the herb layer
Unit:
percent
Datagroup:
Vegetation layer cover
Keywords:
herb layer, herbs performance
Values:
100
75
80
70
65
Contributors:
No information available

Dataset column

Name:
mean_height_f
Definition:
Estimated mean height of ferns
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, ferns performance
Values:
100
0
11
130
10
Contributors:
No information available

Dataset column

Name:
mean_height_w
Definition:
estimated mean height of woods (including woods > 1m)
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, woods performance
Values:
120
130
160
100
150
Contributors:
No information available

Dataset column

Name:
mean_height_g
Definition:
Estimated mean height of grass
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, grass performance
Values:
10
120
0
110
100
Contributors:
No information available

Dataset column

Name:
mean_height_h
Definition:
Estimated mean height of herbs
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, herbs performance
Values:
12
0
10
15
100
Contributors:
No information available

Dataset column

Name:
max_height_f
Definition:
Estimated max height of ferns
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, ferns performance
Values:
100
10
110
0
105
Contributors:
No information available

Dataset column

Name:
max_height_w
Definition:
Estimated max height of woods (including woods > 1m)
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, woods performance
Values:
150
110
1700
180
200
Contributors:
No information available

Dataset column

Name:
max_height_g
Definition:
Estimated max height of grass
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, grass performance
Values:
120
100
125
110
0
Contributors:
No information available

Dataset column

Name:
max_height_h
Definition:
Estimated max height of herbs
Unit:
centimeter
Datagroup:
Functional group height
Keywords:
height, herbs performance
Values:
110
120
0
10
100
Contributors:
No information available

Dataset column

Name:
herb_r
Definition:
recorded herb species richness, taxonomic biodiversity; Taxon diversity can be given as species richness, or other diversity indices.
Unit:
count
Datagroup:
Taxonomic biodiversity
Keywords:
biodiversity, Main Experiment
Values:
17
16
13
21
19
Contributors:
No information available

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140 germany medium

Markus
Germany

Owner of:
9 Datasets

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1 Projects

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22 erfmeier medium

Alexandra
Erfmeier

Owner of:
23 Datasets

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1 Projects

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