FunDivEUROPE | Functional significance of forest biodiversity in Europe Header logo fundiv

Title:
Humus data of the experimental site in Germany (BIOTREE, Kaltenborn) (October 2011)
Access rights:
Free for members
Usage rights:
No information available
Published:
No information available
Abstract:
The humus form is the expression of the equilibrium between litter production, litter decomposition and humification in a forest ecosystem, resulting from the biological action of bacteria, fungi, and soil fauna. The observed humus form reflects a certain combination of ecological factors as climate, soil, tree species composition and management. In a site with constant climate and soil the effect of tree species composition on humus form becomes determining. The effect of tree species mixtures is less well understood and so far mainly studied in microcosm experiments. The idea is to quantify the mass of the ectorganic horizon and to describe the humus form. These features can be further related to variables as microbial activity, litter decomposition and earthworm biomass and diversity. In every plot, four ectorganic samples (25 x 25 cm) are taken and four humus form descriptions are done, in each case 2 in the 'no management' subplot (U) and 2 in the 'management' subplot (M). Ectorganic samples are taken to the lab to get air-dried.
Design:
All 16 plots where sampled. In every plot, four ectorganic samples (25 x 25 cm) are taken and four humus form descriptions are done, in each case 2 in the 'no management' subplot (U) and 2 in the 'management' subplot (M). In principle, within every subplot, the sample is taken nearby the earthworm sampling location, but samples are not taken close to tree stems. In the monoculture plots, sampling locations were located randomly in every subplot. In de mixed plots with 2, 3 or 4 tree species, sampling locations were, per subplot, located randomly on a 'crossing point' of respectively 2, 3 or 4 species. On an estimated 30 by 30 cm square ground vegetation is removed in order that an ectorganic sample (25 x 25 cm) can be taken. Only the ectorganic forest floor material (OL, OF and OH horizon, but not OLn and the mineral soil) is sampled in a bag. Later samples are transported to the lab where they are weighed after they have been air-dried in an oven to constant weight (75°C). Half a meter away from these sampling points an observation trench (50 cm long and 20 cm deep) is dug in order to make the humus form description following the European Humus Form Reference Base (Zanella et al. 2011). Four places along the trench are observed in order to make a sound humus form identification. At least one photo of the humus profile per observation trench is made.
Spatial extent:
BIOTREE Kaltenborn, Germany
Temporal extent:
Autumn 2011
Taxonomic extent:
Forest ectorganic horizon
Measurement cirumstances:
No information available
Data analysis:
No information available

Filter:
Dataset column

Name:
Date
Definition:
Data of sampling
Unit:
No information available
Datagroup:
Sampling moment
Keywords:
No information available
Values:
2011-10-04
2011-10-06
2011-10-07
2011-10-05
2011-10-10
Contributors:
No information available

Dataset column

Name:
Time
Definition:
Time of sampling
Unit:
No information available
Datagroup:
Sampling moment
Keywords:
No information available
Values:
1899-12-30 08:30:00
1899-12-30 10:20:00
1899-12-30 10:25:00
1899-12-30 10:05:00
1899-12-30 10:10:00
Contributors:
No information available

Dataset column

Name:
PlotID
Definition:
Unique plot id
Unit:
No information available
Datagroup:
Kaltenborn plot id
Keywords:
No information available
Values:
1
12
11
10
13
Contributors:
No information available

Dataset column

Name:
Subsample
Definition:
Subsample number (1, 2, 3 or 4): 4 samples are taken per plot, 2 are taken in the unmanaged and 2 in the managed subplot.
Unit:
No information available
Datagroup:
Kaltenborn subplot id
Keywords:
No information available
Values:
3
4
2
1
Contributors:
No information available

Dataset column

Name:
Sample code
Definition:
Sample point code (year/sampling responsible/country/chronological number of sampling action)
Unit:
No information available
Datagroup:
Sample code
Keywords:
No information available
Values:
11HWDH003
11HWDH005
11HWDH002
11HWDH004
11HWDH001
Contributors:
No information available

Dataset column

Name:
Name observer - identifier
Definition:
Name of person who describes the humus form
Unit:
No information available
Datagroup:
Executor
Keywords:
No information available
Values:
Hans Nickmans
Hans De Wandeler
Sam Ottoy
Contributors:
No information available

Dataset column

Name:
Humus form
Definition:
Humus form name, described according to the European humus forms reference base of Zanella et al. (2011)
Unit:
No information available
Datagroup:
Humus form
Keywords:
No information available
Values:
Oligomull
Mesomull
Eumull
Contributors:
No information available

Dataset column

Name:
Name sampler
Definition:
Name of person who sampled the ectorganic horizon
Unit:
No information available
Datagroup:
Executor
Keywords:
No information available
Values:
NA
Sam Ottoy
Contributors:
No information available

Dataset column

Name:
Mass ectorganic horizon
Definition:
Oven dry weight of the forest ectorganic horizon of 0.0625m² ((25 x 25) cm²). Dried in an oven at 75°C .
Unit:
gram
Datagroup:
Humus mass
Keywords:
No information available
Values:
30.3
NA
Contributors:
No information available

No information available


No information available
No information avialable

Filter:
Avatar missing medium

Hans
De Wandeler

Owner of:
19 Datasets

Involved in:
1 Projects

E-Mail Profile
Avatar missing medium

Bart
Muys

Owner of:
25 Datasets

Involved in:
3 Projects

E-Mail Profile
No information available

No information available
No information available

No information available
No information available