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Roscher, Christiane; Schulze, Ernst-Detlef; Weisser, Wolfgang W (2016): Aboveground plant community and species-specific vegetation cover from the Jena Experiment (Main Experiment, year 2003) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.865262, In: Temperton, Vicky; Marquard, Elisabeth; Roscher, Christiane; De Luca, Enrica; Weigelt, Alexandra; Wagg, Cameron; Buchmann, Nina; Schmid, Bernhard; Fischer, Markus; Weisser, Wolfgang W; Luo, Guangjuan; Meyer, Sebastian Tobias (2016): Collection of vegetation and soil surface cover in the Jena Experiment (time series since 2002) [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.865275

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Abstract:
This data set contains information on vegetation cover, i.e. the proportion of soil surface area that is covered by different categories of plants per estimated plot area. Data was collected on the plant community level (sown plant community, weed plant community, dead plant material, and bare ground) and on the level of individual plant species in case of the sown species. 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 by bi-annual weeding and mowing.
In 2003, vegetation cover was estimated twice in May and August just prior to mowing (during peak standing biomass) on all experimental plots of the Main Experiment. Cover was visually estimated in a central area of each plot 3 by 3 m in size (approximately 9 m²) using a decimal scale (Londo). Cover estimates for the individual species (and for target species + weeds + bare ground) can add up to more than 100% because the estimated categories represented a structure with potentially overlapping multiple layers. In 2003, cover on the community level was only estimated for the sown plant community, weed plant community and bare soil. In contrast to later years, cover of dead plant material was not estimated.
Related to:
Roscher, Christiane; Fergus, Alexander J F; Petermann, Jana S; Buchmann, Nina; Schmid, Bernhard; Schulze, Ernst-Detlef (2013): What happens to the sown species if a biodiversity experiment is not weeded? Basic and Applied Ecology, 14(3), 187-198, https://doi.org/10.1016/j.baae.2013.01.003
Roscher, Christiane; Schumacher, Jens; Lipowsky, Annett; Gubsch, Marlén; Weigelt, Alexandra; Pompe, Sven; Kolle, Olaf; Buchmann, Nina; Schmid, Bernhard; Schulze, Ernst-Detlef (2013): A functional trait-based approach to understand community assembly and diversity–productivity relationships over 7 years in experimental grasslands. Perspectives in Plant Ecology Evolution and Systematics, 15(3), 139-149, https://doi.org/10.1016/j.ppees.2013.02.004
Roscher, Christiane; Temperton, Vicky; Buchmann, Nina; Schulze, Ernst-Detlef (2009): Community assembly and biomass production in regularly and never weeded experimental grasslands. Acta Oecologica-International Journal of Ecology, 35(2), 206-217, https://doi.org/10.1016/j.actao.2008.10.003
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
Project(s):
Coverage:
Latitude: 50.946100 * Longitude: 11.611300
Date/Time Start: 2003-01-01T00:00:00 * Date/Time End: 2003-12-31T00:00:00
Minimum HEIGHT above ground: 0.75 m * Maximum HEIGHT above ground: 0.75 m
Event(s):
JenExp_2003 (Jena Experiment 2003) * Latitude: 50.946100 * Longitude: 11.611300 * Date/Time Start: 2003-01-01T00:00:00 * Date/Time End: 2003-12-31T00:00:00 * 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 non-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 measurements of vegetation and soil surface cover 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.865275).
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
7Treatment: mowingT:mowDetailed explanations of treatments are provided in the section "further details".
8Treatment: weedingT:weedDetailed explanations of treatments are provided in the section "further details".
9Treatment: weeding historyT:weed histDetailed explanations of treatments are provided in the section "further details".
10Treatment: seed additionT:seed addDetailed explanations of treatments are provided in the section "further details".
11Treatment: fertilizingT:fertDetailed explanations of treatments are provided in the section "further details".
12Treatment: droughtT:droughtDetailed explanations of treatments are provided in the section "further details".
13Treatment: aboveground: pesticideT:abovegr pestDetailed explanations of treatments are provided in the section "further details".
14Treatment: below pesticideT:below pestDetailed explanations of treatments are provided in the section "further details".
15Treatment: molluscideT:mollusDetailed explanations of treatments are provided in the section "further details".
16Treatment: nematicideT:nemaDetailed explanations of treatments are provided in the section "further details".
17Treatment: eartworm exclosureT:eartworm exclDetailed explanations of treatments are provided in the section "further details".
18Treatment: phytometersT:phytoDetailed explanations of treatments are provided in the section "further details".
19Treatment: specialT:specialDetailed explanations of treatments are provided in the section "further details".
20Sown plant community, coverSown plant cov%Measured on plot level
21Weeds plant community, coverWeeds cov%Measured on plot level
22Bare ground, coverBare ground cov%Measured on plot level
23Alopecurus pratensis, coverA. pratensis cov%Measured on species level
24Anthoxanthum odoratum, coverA. odoratum cov%Measured on species level
25Arrhenatherum elatius, coverA. elatius cov%Measured on species level
26Avenula pubescens, coverA. pubescens cov%Measured on species level
27Bromus erectus, coverB. erectus cov%Measured on species level
28Bromus hordeaceus, coverB. hordeaceus cov%Measured on species level
29Cynosurus cristatus, coverC. cristatus cov%Measured on species level
30Dactylis glomerata, coverD. glomerata cov%Measured on species level
31Festuca pratensis, coverF. pratensis cov%Measured on species level
32Festuca rubra, coverF. rubra cov%Measured on species level
33Holcus lanatus, coverH. lanatus cov%Measured on species level
34Luzula campestris, coverL. campestris cov%Measured on species level
35Phleum pratense, coverP. pratense cov%Measured on species level
36Poa pratensis, coverP. pratensis cov%Measured on species level
37Poa trivialis, coverP. trivialis cov%Measured on species level
38Trisetum flavescens, coverT. flavescens cov%Measured on species level
39Ajuga reptans, coverA. reptans cov%Measured on species level
40Bellis perennis, coverB. perennis cov%Measured on species level
41Glechoma hederacea, coverG. hederacea cov%Measured on species level
42Leontodon autumnalis, coverL. autumnalis cov%Measured on species level
43Leontodon hispidus, coverL. hispidus cov%Measured on species level
44Plantago lanceolata, coverP. lanceolata cov%Measured on species level
45Plantago media, coverP. media cov%Measured on species level
46Primula veris, coverP. veris cov%Measured on species level
47Prunella vulgaris, coverP. vulgaris cov%Measured on species level
48Ranunculus repens, coverR. repens cov%Measured on species level
49Taraxacum officinale, coverT. officinale cov%Measured on species level
50Veronica chamaedrys, coverV. chamaedrys cov%Measured on species level
51Achillea millefolium, coverA. millefolium cov%Measured on species level
52Anthriscus sylvestris, coverA. sylvestris cov%Measured on species level
53Campanula patula, coverC. patula cov%Measured on species level
54Cardamine pratensis, coverC. pratensis cov%Measured on species level
55Carum carvi, coverC. carvi cov%Measured on species level
56Centaurea jacea, coverC. jacea cov%Measured on species level
57Cirsium oleraceum, coverC. oleraceum cov%Measured on species level
58Crepis biennis, coverC. biennis cov%Measured on species level
59Daucus carota, coverD. carota cov%Measured on species level
60Galium mollugo, coverG. mollugo cov%Measured on species level
61Geranium pratense, coverG. pratense cov%Measured on species level
62Heracleum sphondylium, coverH. sphondylium cov%Measured on species level
63Knautia arvensis, coverK. arvensis cov%Measured on species level
64Leucanthemum vulgare, coverL. vulgare cov%Measured on species level
65Pastinaca sativa, coverP. sativa cov%Measured on species level
66Pimpinella major, coverP. major cov%Measured on species level
67Ranunculus acris, coverR. acris cov%Measured on species level
68Rumex acetosa, coverR. acetosa cov%Measured on species level
69Sanguisorba officinalis, coverS. officinalis cov%Measured on species level
70Tragopogon pratensis, coverT. pratensis cov%Measured on species level
71Lathyrus pratensis, coverL. pratensis cov%Measured on species level
72Lotus corniculatus, coverL. corniculatus cov%Measured on species level
73Medicago lupulina, coverM. lupulina cov%Measured on species level
74Medicago x varia, coverM. x varia cov%Measured on species level
75Onobrychis viciifolia, coverO. viciifolia cov%Measured on species level
76Trifolium campestre, coverT. campestre cov%Measured on species level
77Trifolium dubium, coverT. dubium cov%Measured on species level
78Trifolium fragiferum, coverT. fragiferum cov%Measured on species level
79Trifolium hybridum, coverT. hybridum cov%Measured on species level
80Trifolium pratense, coverT. pratense cov%Measured on species level
81Trifolium repens, coverT. repens cov%Measured on species level
82Vicia cracca, coverV. cracca cov%Measured on species level
Size:
4852 data points

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