Belowground biomass productivity from the Jena Experiment (Main Experiment, year 2003)

DOI

This data set contains measurements of belowground biomass productivity, i.e. coarse and fine root biomass production (C- and 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 June 2003, 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 September 2003 and cut with scissors until root fragments were 2 mm) and fine roots after root washing. After withdrawal of the ingrowth cores in September 2003, the holes were refilled with root-free soil, and the ingrowth cores were sampled again in July 2004. In 2003 and 2004, fine roots were grinded in a ball mill and 20 mg of the grinded material was used to determine C- and N-concentration of the fine roots with VarioMax CNS (Elementar).

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).

Identifier
DOI https://doi.org/10.1594/PANGAEA.880328
Related Identifier https://doi.org/10.1594/PANGAEA.880330
Related Identifier https://doi.org/10.1890/08-0867.1
Related Identifier https://doi.org/10.1111/j.1365-2745.2008.01451.x
Related Identifier https://doi.org/10.1093/jpe/rtq003
Related Identifier https://doi.org/10.1111/j.1365-2486.2008.01697.x
Related Identifier https://store.pangaea.de/Publications/Jena_Experiment/PlotInformationMainExperiment.txt
Related Identifier https://store.pangaea.de/Publications/Jena_Experiment/TreatmentDefinitionsJuly2012.pdf
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.880328
Provenance
Creator Bessler, Holger; Engels, Christof
Publisher PANGAEA
Publication Year 2017
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 3607 data points
Discipline History; Humanities
Spatial Coverage (11.611 LON, 50.946 LAT); Thuringia, Germany
Temporal Coverage Begin 2003-01-01T00:00:00Z
Temporal Coverage End 2003-12-31T00:00:00Z