Citation:

PANGAEA.885439

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Abstract:

This data set contains measurements of soil pH values. Data presented here is from the Main Experiment plots of a large grassland biodiversity experiment (the Jena Experiment; see further details below). In the main experiment, 82 grassland plots of 20 x 20 m were established from a pool of 60 species belonging to four functional groups (grasses, legumes, tall and small herbs). In May 2002, varying numbers of plant species from this species pool were sown into the plots to create a gradient of plant species richness (1, 2, 4, 8, 16 and 60 species) and functional richness (1, 2, 3, 4 functional groups). Plots were maintained in general by bi-annual weeding and mowing. Since 2010, plot size was reduced to 5 x 6 m and plots were weeded three times per year.

In 2002, soil pH values were determined in both, water and calcium chloride. Five soil samples with a diameter of 1 cm per plot were taken to 30 cm depth and separated in increments of 0-15 and 15-30 cm. Soil was diluted in H2O and CaCl2 with a ratio of 1:2.5 of soil to solution and pH value was measured with an electrode (Knick pH Meter 761 Calimatic).

Related to:

Leimer, Sophia; Oelmann, Yvonne; Wirth, Christian; Wilcke, Wolfgang (2015): Time matters for plant diversity effects on nitrate leaching from temperate grassland. Agriculture Ecosystems & Environment, 211, 155-163, https://doi.org/10.1016/j.agee.2015.06.002

Leimer, Sophia; Wirth, Christian; Oelmann, Yvonne; Wilcke, Wolfgang (2014): Biodiversity effects on nitrate concentrations in soil solution: a Bayesian model. Biogeochemistry, 118(1-3), 141-157, https://doi.org/10.1007/s10533-013-9913-6

Oelmann, Yvonne; Buchmann, Nina; Gleixner, Gerd; Habekost, Maike; Roscher, Christiane; Rosenkranz, Stephan; Schulze, Ernst-Detlef; Steinbeiss, Sibylle; Temperton, Vicky; Weigelt, Alexandra; Weisser, Wolfgang W; Wilcke, Wolfgang (2011): Plant diversity effects on aboveground and belowground N pools in temperate grassland ecosystems: Development in the first 5 years after establishment. Global Biogeochemical Cycles, 25(2), n/a-n/a, https://doi.org/10.1029/2010GB003869

Oelmann, Yvonne; Kreutziger, Yvonne; Temperton, Vicky; Buchmann, Nina; Roscher, Christiane; Schumacher, Jens; Schulze, Ernst-Detlef; Weisser, Wolfgang W; Wilcke, Wolfgang (2007): Nitrogen and Phosphorus Budgets in Experimental Grasslands of Variable Diversity. Journal of Environmental Quality, 36(2), 396, https://doi.org/10.2134/jeq2006.0217

Oelmann, Yvonne; Richter, Anika K; Roscher, Christiane; Rosenkranz, Stephan; Temperton, Vicky; Weisser, Wolfgang W; Wilcke, Wolfgang (2011): Does plant diversity influence phosphorus cycling in experimental grasslands? Geoderma, 167-168, 178-187, https://doi.org/10.1016/j.geoderma.2011.09.012

Oelmann, Yvonne; Wilcke, Wolfgang; Temperton, Vicky; Buchmann, Nina; Roscher, Christiane; Schumacher, Jens; Schulze, Ernst-Detlef; Weisser, Wolfgang W (2007): Soil and Plant Nitrogen Pools as Related to Plant Diversity in an Experimental Grassland. Soil Science Society of America Journal, 71(3), 720, https://doi.org/10.2136/sssaj2006.0205

Rosenkranz, Stephan; Wilcke, Wolfgang; Eisenhauer, Nico; Oelmann, Yvonne (2012): Net ammonification as influenced by plant diversity in experimental grasslands. Soil Biology and Biochemistry, 48, 78-87, https://doi.org/10.1016/j.soilbio.2012.01.008

Further details:

Plot information of the Jena Main Experiment

Treatment description

Project(s):

The Jena Experiment (JenExp)

Coverage:

Latitude: 50.946100 * Longitude: 11.611300

Date/Time Start: 2002-01-01T00:00:00 * Date/Time End: 2002-12-31T00:00:00

Minimum DEPTH, soil: 0.075 m * Maximum DEPTH, soil: 0.225 m

Event(s):

JenExp_2002 (Jena Experiment 2002) * Latitude: 50.946100 * Longitude: 11.611300 * Date/Time Start: 2002-01-01T00:00:00 * Date/Time End: 2002-12-31T00:00:00 * Location: Thuringia, Germany * Method/Device: Experiment (EXP)

Comment:

The main experiment on the field site of the Jena Experiment comprises a split-plot design in which additional treatments (e.g. no weeding allowing for invasion of other species, or application of fertilizer) have been applied to subplots along the outer margin of the plots (see Treatment description in the section "further details"). While in this dataset only data from the core area (mown and weeding of all none-sown species twice a year, no additional treatments) is reported, all potential treatments are listed as the first parameters in the data file to guarantee compatibility with other datasets that include different treatments.

There are two types of missing values contained in the dataset. Empty cells represent missing values that result from the design of the experiment when the respective value does not occur and could thus not be measured. For example, in the columns of species-specific biomass cells are left blank, when the species was not sown into the respective plot. Missing values that resulted from methodological problems, sampling errors, or lost samples/data are marked with "-9999".

This dataset is part of a collection of physical and chemical soil properties in the Jena Experiment. Similar data from other experiments (e.g. Main Experiment, Dominance Experiment; see details above), other years, or other methods quantifying related data might be available (https://doi.pangaea.de/10.1594/PANGAEA.885439).

Parameter(s):

#	Name	Short Name	Unit	Method/Device	Comment
1	Experimental plot	Experimental plot			Detailed explanations of plots and the plant diversity gradient are provided in the section "further details".
2	Depth, soil, minimum	Depth soil min	m
3	Depth, soil, maximum	Depth soil max	m
4	DEPTH, soil	Depth soil	m		Geocode
5	Date/time start	Date/time start			of sampling campaign
6	Date/time end	Date/time end			of sampling campaign
7	Treatment: mowing	T:mow			Detailed explanations of treatments are provided in the section "further details".
8	Treatment: weeding	T:weed			Detailed explanations of treatments are provided in the section "further details".
9	Treatment: weeding history	T:weed hist			Detailed explanations of treatments are provided in the section "further details".
10	Treatment: seed addition	T:seed add			Detailed explanations of treatments are provided in the section "further details".
11	Treatment: fertilizing	T:fert			Detailed explanations of treatments are provided in the section "further details".
12	Treatment: drought	T:drought			Detailed explanations of treatments are provided in the section "further details".
13	Treatment: aboveground: pesticide	T:abovegr pest			Detailed explanations of treatments are provided in the section "further details".
14	Treatment: below pesticide	T:below pest			Detailed explanations of treatments are provided in the section "further details".
15	Treatment: molluscide	T:mollus			Detailed explanations of treatments are provided in the section "further details".
16	Treatment: nematicide	T:nema			Detailed explanations of treatments are provided in the section "further details".
17	Treatment: eartworm exclosure	T:eartworm excl			Detailed explanations of treatments are provided in the section "further details".
18	Treatment: phytometers	T:phyto			Detailed explanations of treatments are provided in the section "further details".
19	Treatment: special	T:special			Detailed explanations of treatments are provided in the section "further details".
20	pH calcium chloride	pH CaCl2		pH meter KNICK Model 761	Measured on plot level
21	pH water in soil	pH H2O		pH meter KNICK Model 761	Measured on plot level

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

3240 data points

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