Gedinne FORBIO Earthworm data

Usage Rights

This data is Free within projects.

Dataset Abstract

The earthworm sampling records the abundance, biomass and species diversity of earthworms in the FORBIO site in Gedinne (Belgium). Hereby only the monoculture and high diversity (4 species) plots(20 plots) where sampled. One sample is taken in every plot. In the monoculture plots, samples were located in the middle of the plots. In the high diversity plots, the sampling location was located randomly on a 'crossing point' of 4 species. At each sampling point earthworms were sampled. First (if present), a central litter sample (25x25cm) is taken followed by the 'mustard extraction method' over an area of 0,5 m² (0.5x1m) and a final soil sample (25x25x20cm) (length, width, depth) in the middle of this location. Litter and soil samples were taken to the lab for further handsorting, whereby the pit left after sampling was levelled off with surrounding soil. Sampled earthworms are stored in 70% ethanol solution.

Dataset Design

monoculture and high diversity (4 species) plots(20 plots) where sampled. One sample is taken in every plot. In principle, within every subplot, the samples are taken randomly, but samples are not taken close to tree stems. In the monoculture plots, samples were located in the middle of the plots. In the high diversity plots, the sampling location was located randomly on a 'crossing point' of 4 species. At each sampling point earthworms were sampled. First (if present), a central litter sample (25x25cm) is taken followed by the 'mustard extraction method' over an area of 0,5 m² (0.5x1m) and a final soil sample (25x25x20cm) (length, width, depth) in the middle of this location. When no litter is present, no litter sample could be taken and only a mustard extraction and soil sample is carried out. Samplings that are not carried out are indicated with ‘NA’ in the ‘Time’ column. Litter and soil samples were taken to the lab for further handsorting, whereby the pit left after sampling was levelled off with surrounding soil. Sampled earthworms are stored in 70% ethanol solution.

Spatial Extent

Gedinne, along Rue the Bouillon with the 'Gribelle' site in the north and the 'Gouverneur' site in the south, former spruce plantation

Temporal Extent

Autumn 2011

Taxonomic Extent

Earthworms

Data Analysis

Variables of interest are: Species, Biomass (g), Number (m²), Biomass (g/m²). Number (m²) and Biomass (g/m²) are scaled up numbers of the original caught individual and biomass in a particular sampling method. Attention! Corrections for slope of the sampled area however are not included.

Data columns available in the raw data part of this dataset

Date
Data of sampling
Data group: Sampling Date
Values
2011-10-28
2011-10-26
2011-10-27
2011-10-24
Time
Time of sampling
Data group: Sampling time
Values
1899-12-30 10:25:00
1899-12-30 09:50:00
1899-12-30 09:45:00
1899-12-30 10:18:00
1899-12-30 10:08:00
PlotID
Unique plot id
Data group: Gedinne plot id
Values
11
15
13
1
12
Name sampler
Name of person who sampled the earthworms
Data group: Helper
Values
Jorgen Opdebeeck
Sam Ottoy
NA
Hans De Wandeler
Sampling method
Method of sampling: L=Litter sample; M=Mustard extraction; S=Soil sample
Data group: Sampling method
Values
M
S
L
Slope length
Lengthwise slope of the sampled area. Value 0 if slope <5°
Unit: degree
Data group: Topography
Values
9
6
5
0
Slope width
Width-wise slope of the sampled area. Value 0 if slope <5°
Unit: degree
Data group: Topography
Values
6
0
8
Sample code
Sample point code (year/sampling responsible/country/chronological number of sampling action)
Data group: Sample code
Values
11HWGE005
11HWGE001
11HWGE003
11HWGE002
11HWGE004
Date on formol
Date on which the earthworm fixation in a 5% formaldehyde solution started
Data group: Fixation moment
Values
2011-10-31
NA
Date back on ethanol
Date on which the earthworm is transferred from formaldehyde solution to 70% ethanol solution
Data group: Preservation moment
Values
NA
2012-08-17
Date identification
Date identification
Data group: Identification moment
Values
2013-04-11
NA
2013-04-08
2013-03-22
2013-04-05
Name observer - identifier
Name of person who identified and weighed the earthworm; Source: These persons could not be matched within the portal: Jorgen Opdebeeck
Data group: Helper
Values
NA
Jorgen Opdebeeck
* These persons could not be matched within the portal: Jorgen Opdebeeck also contributed to this column.
Species
Earthworm species name, identified with the key of Sims and Gerard 1999
Data group: Earthworm species
Values
Dendrobaena octaedra
Lumbricus castaneus
Lumbricus rubellus
Lumbricus sp.
Dendrodrillus rubidus
Development stage
Developmental stage of the earthworm: A= adult; S= subadult; J= juvenile ; / = development stage not determinable (Adult = clitellum, tubercula pubertatis and male pore developped; Subadult= clitellum, tubercula pubertatis and male pore not fully developped; Juvenile= no clitellum, tubercula pubertatis and male pore present)
Data group: Earthworm descriptor
Values
S
J
A
/
NA
Biomass
weight of the individual earthworm. 0 means no worm in sample; Source: These persons could not be matched within the portal: Sam Ottoy, Jorgen Opdebeeck
Unit: gram
Data group: Earthworm biomass
Values
0.002
0
0.007
0.003
0.004
* These persons could not be matched within the portal: Sam Ottoy, Jorgen Opdebeeck also contributed to this column.
Body part
Description of which part of the organism is sampled: Complete = entire organism; Head = only the rostral part; Tail = only the caudal part; Middle piece = only a middle part
Data group: Earthworm descriptor
Values
NA
Complete
Head
Tail
Density
Number of earthworm individuals scaled up to m², without additional correction for slope of the sampled area; 0 means no worms in sample
Unit: number
Data group: Earthworm density
Values
16
2
0
Biomass per square meter
Weight of the earthworm scaled up to 1m², without additional correction for slope of the sampled area; 0 means no worms in sample
Unit: gramsPerSquareMeter
Data group: Earthworm biomass
Values
0.006
0.014
0
0.004
0.008