Citation:

PANGAEA.855002

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Abstract:

This data set contains measurements of plant height: vegetative height (heighest leaf) in 2004 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 by bi-annual weeding and mowing.

In 2004, plant height was recorded twice a year just before biomass harvest (during peak standing biomass in late May and in late August). For plants at 3 random points in a control area at the margin of each experimental, vegetative height (heighest leaf) was measured as standing height (without stretching the plant). Provided are the individual measurements and the mean over the measured plants.

Related to:

Weigelt, Alexandra; Marquard, Elisabeth; Temperton, Vicky; Roscher, Christiane; Scherber, Christoph; Mwangi, Peter N; von Felten, Stefanie; Buchmann, Nina; Schmid, Bernhard; Schulze, Ernst-Detlef; Weisser, Wolfgang W (2010): The Jena Experiment: six years of data from a grassland biodiversity experiment. Ecology, 91(3), 930-931, https://doi.org/10.1890/09-0863.1

Further details:

Plot information of the Jena Main Experiment

Treatment description

Roscher, Christiane; Schumacher, Jens; Baade, Jussi; Wilcken, Sara; Gleixner, Gerd; Weisser, Wolfgang W; Schmid, Bernhard; Schulze, Ernst-Detlef (2004): The role of biodiversity for element cycling and trophic interactions: an experimental approach in a grassland community. Basic and Applied Ecology, 5(2), 107-121, https://doi.org/10.1078/1439-1791-00216

Project(s):

The Jena Experiment (JenExp)

Coverage:

Latitude: 50.946100 * Longitude: 11.611300

Date/Time Start: 2004-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00

Minimum HEIGHT above ground: 0.75 m * Maximum HEIGHT above ground: 0.75 m

Event(s):

JenExp_2004 (Jena Experiment 2004) * Latitude: 50.946100 * Longitude: 11.611300 * Date/Time Start: 2004-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00 * Location: Thuringia, Germany * Method/Device: Experiment (EXP)

Comment:

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 case 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 datasets is part of a collection of measurements of plant height 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 (doi:10.1594/PANGAEA.855002).

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	Height aboveground, minimum	Height abovegr min	m
3	Height aboveground, maximum	Height abovegr max	m
4	HEIGHT above ground	Height	m	Geocode – Average of min and max value
5	Date/time start	Date/time start		of sampling campaign
6	Date/time end	Date/time end		of sampling campaign
7	Replicate	Repl		Speciefies if multiple samples per plot have been taken and are provided in the data file.
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".
21	Sown plant community, regenerative height	Sown plant reg h	m	Measured on plot level
22	Sown plant community, vegetative height	Sown plant veg h	m	Measured on plot level

License:

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

Size:

8364 data points

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