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Mwangi, Peter N; Weigelt, Alexandra; Weisser, Wolfgang W (2015): Plant height along the plant diversity gradient in the Jena Experiment (Main Experiment, year 2004) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.854995, In: Weigelt, Alexandra; Temperton, Vicky; Scherber, Christoph; Mwangi, Peter N; Buchmann, Nina; Weisser, Wolfgang W; Guderle, Marcus; Meyer, Sebastian Tobias (2015): Collection of data on plant height along the plant diversity gradient in the Jena Experiment (Main Experiment, time series since 2002) [dataset publication series]. PANGAEA, https://doi.org/10.1594/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:
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):
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Experimental plotExperimental plotDetailed explanations of plots and the plant diversity gradient are provided in the section "further details".
2Height aboveground, minimumHeight abovegr minm
3Height aboveground, maximumHeight abovegr maxm
4HEIGHT above groundHeightmGeocode – Average of min and max value
5Date/time startDate/time startof sampling campaign
6Date/time endDate/time endof sampling campaign
7ReplicateReplSpeciefies if multiple samples per plot have been taken and are provided in the data file.
8Treatment: mowingT:mowDetailed explanations of treatments are provided in the section "further details".
9Treatment: weedingT:weedDetailed explanations of treatments are provided in the section "further details".
10Treatment: weeding historyT:weed histDetailed explanations of treatments are provided in the section "further details".
11Treatment: seed additionT:seed addDetailed explanations of treatments are provided in the section "further details".
12Treatment: fertilizingT:fertDetailed explanations of treatments are provided in the section "further details".
13Treatment: droughtT:droughtDetailed explanations of treatments are provided in the section "further details".
14Treatment: aboveground: pesticideT:abovegr pestDetailed explanations of treatments are provided in the section "further details".
15Treatment: below pesticideT:below pestDetailed explanations of treatments are provided in the section "further details".
16Treatment: molluscideT:mollusDetailed explanations of treatments are provided in the section "further details".
17Treatment: nematicideT:nemaDetailed explanations of treatments are provided in the section "further details".
18Treatment: eartworm exclosureT:eartworm exclDetailed explanations of treatments are provided in the section "further details".
19Treatment: phytometersT:phytoDetailed explanations of treatments are provided in the section "further details".
20Treatment: specialT:specialDetailed explanations of treatments are provided in the section "further details".
21Sown plant community, regenerative heightSown plant reg hmMeasured on plot level
22Sown plant community, vegetative heightSown plant veg hmMeasured on plot level
Size:
8364 data points

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