Bessler, Holger; Engels, Christof (2017): Belowground biomass productivity from the Jena Experiment (Main Experiment, year 2007) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.880329, In: Bessler, Holger; Engels, Christof; Ravenek, Janneke; Mommer, Liesje; de Kroon, Hans; Oram, Natalie; Chen, Hongmei; Weigelt, Alexandra; Luo, Guangjuan; Meyer, Sebastian Tobias (2017): Collection of data on belowground plant biomass and morphological root parameters in the Jena Experiment [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.880330
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Abstract:
This data set contains measurements of belowground biomass productivity, i.e. coarse and fine root biomass production (N-concentration of the fine roots are attached to this dataset as well). 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, plots were weeded three times per year.
In July 2007, five soil cores with a 4.8 cm diameter per plot were removed to 30 cm depth. The removed soil was replaced by root-free soil from the field site. The ingrowth cores were removed in June 2008 and cut with scissors until root fragments were < 1 cm in length. For root washing, a 210 g subsample of the bulk material was taken and soaked in water. The soil was removed from the roots by rinsing over a sieve with 0.5 mm mesh width. Then, organic debris and remaining soil particles were removed by hand. The remaining roots were dried at 70 °C and weighed.
In 2008, ingrowth cores were separated in depth increments of 0-5, 5-10, 10-20 and 20-30 cm depth. Roots were seperated in coarse (diameter > 2 mm) and fine roots before cutting the bulk material. Fine roots were grinded in a ball mill and 20 mg of the grinded material was used to determine N-concentration of the fine roots with VarioMax CNS (Elementar).
Related to:
Bessler, Holger; Temperton, Vicky; Roscher, Christiane; Buchmann, Nina; Schmid, Bernhard; Schulze, Ernst-Detlef; Weisser, Wolfgang W; Engels, Christof (2009): Aboveground overyielding in grassland mixtures is associated with reduced biomass partitioning to belowground organs. Ecology, 90(6), 1520-1530, https://doi.org/10.1890/08-0867.1
Roscher, Christiane; Bessler, Holger; Oelmann, Yvonne; Engels, Christof; Wilcke, Wolfgang; Schulze, Ernst-Detlef (2009): Resources, recruitment limitation and invader species identity determine pattern of spontaneous invasion in experimental grasslands. Journal of Ecology, 97(1), 32-47, https://doi.org/10.1111/j.1365-2745.2008.01451.x
Scherber, Christoph; Mwangi, Peter N; Schmitz, Martin; Scherer-Lorenzen, Michael; Bessler, Holger; Engels, Christof; Eisenhauer, Nico; Migunova, Varvara D; Scheu, Stefan; Weisser, Wolfgang W; Schulze, Ernst-Detlef; Schmid, Bernhard (2010): Biodiversity and belowground interactions mediate community invasion resistance against a tall herb invader. Journal of Plant Ecology-Uk, 3(2), 99-108, https://doi.org/10.1093/jpe/rtq003
Steinbeiss, Sibylle; Bessler, Holger; Engels, Christof; Temperton, Vicky; Buchmann, Nina; Roscher, Christiane; Kreutziger, Yvonne; Baade, Jussi; Habekost, Maike; Gleixner, Gerd (2008): Plant diversity positively affects short-term soil carbon storage in experimental grasslands. Global Change Biology, 14, 2937-2949, https://doi.org/10.1111/j.1365-2486.2008.01697.x
Further details:
Project(s):
The Jena Experiment (JenExp)
Coverage:
Latitude: 50.946100 * Longitude: 11.611300
Date/Time Start: 2007-01-01T00:00:00 * Date/Time End: 2007-12-31T00:00:00
Minimum DEPTH, soil: 0.025 m * Maximum DEPTH, soil: 0.250 m
Event(s):
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 measurements of belowground plant biomass and morphological root parameters 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.880330).
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | 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 | Root biomass production, fine roots | Root biom prod fine | g/m2 | Measured on plot level | ||
21 | Root biomass production, coarse roots | Root biom prod coarse | g/m2 | Measured on plot level | ||
22 | Nitrogen, root, fine | N root fine | % |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8282 data points
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