Citation:

PANGAEA.865134

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Abstract:

The Jena Biodiversity Experiment is located on a Central European mesophilic floodplain on the banks of the Saale River (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 in the plots to create a gradient of plant species richness (1, 2, 4, 8, 16 and 60 species) and functional richness (1, 2, 3, or 4 functional groups). Plots were maintained by bi-annual weeding and mowing.

In June 2013, a natural 200-year flood event occurred at the field site. Rainfall in May 2013 in Jena was ~150mm, constituting >25% of annual precipitation at the site that year. Overall the flood affected the entire Elbe River Basin and much of Europe and was one of the largest natural flooding events in the past two centuries. The flood lasted for a total of 24 days at the site (30 May–24 June) and led to anaerobic soil conditions. Due to small topographical differences among the plots in the experiment (<1m), there was variation in the duration of flooding and the proportion of each plot that was flooded. This variation was well-distributed across the diversity gradient. To assess the importance of flood severity, the proportion of each plot that was flooded was estimated by eye (using five classes: 0 completely dry, 0.25 up to a quarter under water, 0.5 half, 0.75 up to three quarters under water, and 1 more than three quarters under water up to completely submerged). These values, for each of the 24 days that the flood lasted, were summed up to calculate a flooding index. The resulting flooding index is given for each plot of the Main Experiment.

Related to:

Hertzog, Lionel R; Ebeling, Anne; Meyer, Sebastian Tobias; Eisenhauer, Nico; Fischer, Christine; Hildebrandt, Anke; Wagg, Cameron; Weisser, Wolfgang W (2016): High Survival of Lasius niger during Summer Flooding in a European Grassland. PLoS ONE, 11(11), e0152777, https://doi.org/10.1371/journal.pone.0152777

Wright, Alexandra J; Ebeling, Anne; de Kroon, Hans; Roscher, Christiane; Weigelt, Alexandra; Buchmann, Nina; Buchmann, Tina; Fischer, Christine; Hacker, Peter W; Hildebrandt, Anke; Leimer, Sophia; Mommer, Liesje; Oelmann, Yvonne; Scheu, Stefan; Steinauer, Katja; Strecker, Tanja; Weisser, Wolfgang W; Wilcke, Wolfgang; Eisenhauer, Nico (2015): Flooding disturbances increase resource availability and productivity but reduce stability in diverse plant communities. Nature Communications, 6, 6092, https://doi.org/10.1038/ncomms7092

Further details:

Plot information of the Jena Main Experiment

Project(s):

The Jena Experiment (JenExp)

Coverage:

Latitude: 50.946100 * Longitude: 11.611300

Date/Time Start: 2013-01-01T00:00:00 * Date/Time End: 2013-12-31T00:00:00

Minimum HEIGHT above ground: 0.5 m * Maximum HEIGHT above ground: 0.5 m

Event(s):

JenExp_2013 (Jena Experiment 2013) * Latitude: 50.946100 * Longitude: 11.611300 * Date/Time Start: 2013-01-01T00:00:00 * Date/Time End: 2013-12-31T00:00:00 * Location: Thuringia, Germany * Method/Device: Experiment (EXP)

Comment:

This dataset is part of a collection of measurements on environmental conditions at the field site of the Jena Experiment. Data for other abiotic measurements, from other experiments (e.g. Main Experiment, Dominance Experiment; see details above), other years, or other methods quantifying related data might be available (doi:10.1594/PANGAEA.865134).

Parameter(s):

#	Name	Short Name	Unit	Comment
1	Experimental plot	Experimental plot		Detailed explanations of plots and the plant diversity gradient are provided in the section "further details".
2	Flood	Flood	day
3	Height aboveground, minimum	Height abovegr min	m	Soil surface
4	Height aboveground, maximum	Height abovegr max	m	rough approximation of maximum vegetation height
5	HEIGHT above ground	Height	m	Geocode – Average of min and max value
6	Date/time start	Date/time start		of sampling campaign
7	Date/time end	Date/time end		of sampling campaign
8	Treatment: mowing	T:mow		Detailed explanations of treatments are provided in the section "further details".
9	Treatment: weeding	T:weed		Detailed explanations of treatments are provided in the section "further details".
10	Treatment: weeding history	T:weed hist		Detailed explanations of treatments are provided in the section "further details".
11	Treatment: seed addition	T:seed add		Detailed explanations of treatments are provided in the section "further details".
12	Treatment: fertilizing	T:fert		Detailed explanations of treatments are provided in the section "further details".
13	Treatment: drought	T:drought		Detailed explanations of treatments are provided in the section "further details".
14	Treatment: aboveground: pesticide	T:abovegr pest		Detailed explanations of treatments are provided in the section "further details".
15	Treatment: below pesticide	T:below pest		Detailed explanations of treatments are provided in the section "further details".
16	Treatment: molluscide	T:mollus		Detailed explanations of treatments are provided in the section "further details".
17	Treatment: nematicide	T:nema		Detailed explanations of treatments are provided in the section "further details".
18	Treatment: eartworm exclosure	T:eartworm excl		Detailed explanations of treatments are provided in the section "further details".
19	Treatment: phytometers	T:phyto		Detailed explanations of treatments are provided in the section "further details".
20	Treatment: special	T:special		Detailed explanations of treatments are provided in the section "further details".

License:

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

Size:

1520 data points

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