Oelmann, Yvonne; Wilcke, Wolfgang (2018): Element analysis of phosphorous (P), calcium (Ca), potassium (K), sodium (Na) and magnesium (Mg) in plants (Main Experiment, year 2007) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.887345
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Abstract:
This data set contains measurements of P, Ca, K, Na and Mg concentrations in aboveground plant biomass. 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, plot size was reduced to 5 x 6 m and plots were weeded three times per year.
Aboveground plant biomass was harvested twice in May and August at estimated peak standing biomass before mowing. Plants were clipped at 3 cm above ground level in four (three in May) rectangles of 20 x 50 cm size per plot. All material was sorted to species, weeds and rest (dead). Samples were dried at 70 °C for at least 48 h and weeds and rest were thrown away. All other material was pooled per plot and harvest, shredded and milled for chemical analyses. Each sample was digested with HNO3 at 200 °C and at about 600-700 MPa using the microwave-assisted high pressure digestion unit (Mars 5 Express, CEM, Lintfort, Germany). Phosphorus concentrations were determined in a Continuous Flow Analyzer, AA3-system (Bran and Lübbe, Hamburg-Norderstedt, Germany). For Ca, K, Na and Mg measurement, atom absorption spectroscopy (AAS, AS240FS Fast Sequential AAS, Varian, Palo Alto, USA) was used.
Related to:
Abbas, Maike; Ebeling, Anne; Oelmann, Yvonne; Ptacnik, Robert; Roscher, Christiane; Weigelt, Alexandra; Weisser, Wolfgang W; Wilcke, Wolfgang; Hillebrand, Helmut (2013): Biodiversity Effects on Plant Stoichiometry. PLoS ONE, 8(3), e58179, https://doi.org/10.1371/journal.pone.0058179
Abbas, Maike; Klein, Alexandra-Maria; Ebeling, Anne; Oelmann, Yvonne; Ptacnik, Robert; Weisser, Wolfgang W; Hillebrand, Helmut (2014): Plant diversity effects on pollinating and herbivorous insects can be linked to plant stoichiometry. Basic and Applied Ecology, 15(2), 169-178, https://doi.org/10.1016/j.baae.2014.02.001
Allan, Erik; Weisser, Wolfgang W; Fischer, Markus; Schulze, Ernst-Detlef; Weigelt, Alexandra; Roscher, Christiane; Baade, Jussi; Barnard, Romain L; Bessler, Holger; Buchmann, Nina; Ebeling, Anne; Eisenhauer, Nico; Engels, Christof; Fergus, Alexander J F; Gleixner, Gerd; Gubsch, Marlén; Halle, Stefan; Klein, Alexandra-Maria; Kertscher, Ilona; Kuu, Annely; Lange, Markus; Le Roux, Xavier; Meyer, Sebastian Tobias; Migunova, Varvara D; Milcu, Alexandru; Niklaus, Pascal A; Oelmann, Yvonne; Pasalic, Esther; Petermann, Jana S; Poly, Franck; Rottstock, Tanja; Sabais, Alexander C W; Scherber, Christoph; Scherer-Lorenzen, Michael; Scheu, Stefan; Steinbeiss, Sibylle; Schwichtenberg, Guido; Temperton, Vicky; Tscharntke, Teja; Voigt, Winfried; Wilcke, Wolfgang; Wirth, Christian; Schmid, Bernhard (2013): A comparison of the strength of biodiversity effects across multiple functions. Oecologia, 173(1), 223-237, https://doi.org/10.1007/s00442-012-2589-0
Meyer, Sebastian Tobias; Ebeling, Anne; Eisenhauer, Nico; Hertzog, Lionel R; Hillebrand, Helmut; Milcu, Alexandru; Pompe, Sven; Abbas, Maike; Bessler, Holger; Buchmann, Nina; De Luca, Enrica; Engels, Christof; Fischer, Markus; Gleixner, Gerd; Hudewenz, Anika; Klein, Alexandra-Maria; de Kroon, Hans; Leimer, Sophia; Loranger, Hannah; Mommer, Liesje; Oelmann, Yvonne; Ravenek, Janneke; Roscher, Christiane; Rottstock, Tanja; Scherber, Christoph; Scherer-Lorenzen, Michael; Scheu, Stefan; Schmid, Bernhard; Schulze, Ernst-Detlef; Staudler, Andrea; Strecker, Tanja; Temperton, Vicky; Tscharntke, Teja; Vogel, Anja; Voigt, Winfried; Weigelt, Alexandra; Wilcke, Wolfgang; Weisser, Wolfgang W (2016): Effects of biodiversity strengthen over time as ecosystem functioning declines at low and increases at high biodiversity. Ecosphere, 7(12), e01619, https://doi.org/10.1002/ecs2.1619
Oelmann, Yvonne; Kreutziger, Yvonne; Temperton, Vicky; Buchmann, Nina; Roscher, Christiane; Schumacher, Jens; Schulze, Ernst-Detlef; Weisser, Wolfgang W; Wilcke, Wolfgang (2007): Nitrogen and Phosphorus Budgets in Experimental Grasslands of Variable Diversity. Journal of Environmental Quality, 36(2), 396, https://doi.org/10.2134/jeq2006.0217
Oelmann, Yvonne; Richter, Anika K; Roscher, Christiane; Rosenkranz, Stephan; Temperton, Vicky; Weisser, Wolfgang W; Wilcke, Wolfgang (2011): Does plant diversity influence phosphorus cycling in experimental grasslands? Geoderma, 167-168, 178-187, https://doi.org/10.1016/j.geoderma.2011.09.012
Schaller, Jörg; Roscher, Christiane; Hillebrand, Helmut; Weigelt, Alexandra; Oelmann, Yvonne; Wilcke, Wolfgang; Ebeling, Anne; Weisser, Wolfgang W (2016): Plant diversity and functional groups affect Si and Ca pools in aboveground biomass of grassland systems. Oecologia, 182(1), 277-286, https://doi.org/10.1007/s00442-016-3647-9
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
Weisser, Wolfgang W; Roscher, Christiane; Meyer, Sebastian Tobias; Ebeling, Anne; Luo, Guangjuan; Allan, Erik; Bessler, Holger; Barnard, Romain L; Buchmann, Nina; Buscot, Francois; Engels, Christof; Fischer, Christine; Fischer, Markus; Gessler, Arthur; Gleixner, Gerd; Halle, Stefan; Hildebrandt, Anke; Hillebrand, Helmut; de Kroon, Hans; Lange, Markus; Leimer, Sophia; Le Roux, Xavier; Milcu, Alexandru; Mommer, Liesje; Niklaus, Pascal A; Oelmann, Yvonne; Proulx, J F; Roy, Jacques; Scherber, Christoph; Scherer-Lorenzen, Michael; Scheu, Stefan; Tscharntke, Teja; Wachendorf, Michael; Wagg, Cameron; Weigelt, Alexandra; Wilcke, Wolfgang; Wirth, Christian; Schulze, Ernst-Detlef; Schmid, Bernhard; Eisenhauer, Nico (2017): Biodiversity effects on ecosystem functioning in a 15-year grassland experiment: Patterns, mechanisms, and open questions. Basic and Applied Ecology, 23, 1-73, https://doi.org/10.1016/j.baae.2017.06.002
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 HEIGHT above ground: 0.5 m * Maximum HEIGHT above ground: 0.5 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 element concentrations in plants 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 XXX)
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 | Height aboveground, minimum | Height abovegr min | m | Soil surface | ||
| 3 | Height aboveground, maximum | Height abovegr max | m | rough approximation of maximum vegetation height | ||
| 4 | HEIGHT above ground | Height | m | Geocode – Average of min and max value | ||
| 5 | Date/time end | Date/time end | of sampling campaign | |||
| 6 | Date/time start | Date/time start | 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 | Phosphorus | P | % | |||
| 21 | Calcium | Ca | % | |||
| 22 | Potassium | K | % | |||
| 23 | Sodium | Na | % | |||
| 24 | Magnesium | Mg | % |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3772 data points
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