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Oelmann, Yvonne; Rosenkranz, Stephan; Wilcke, Wolfgang (2015): Mineral nitrogen from KCl extractions of soil from the Jena Experiment (Main Experiment up to 15cm depth, year 2008). PANGAEA, https://doi.org/10.1594/PANGAEA.854371, In: Oelmann, Yvonne; Wilcke, Wolfgang; Rosenkranz, Stephan; Lange, Markus; Steinbeiss, Sibylle; Habekost, Maike; Gleixner, Gerd; Luo, Guangjuan; Guderle, Marcus; Meyer, Sebastian Tobias (2015): Collection of data on particulate and dissolved soil nitrogen in the Jena Experiment (Main Experiment, time series since 2002). PANGAEA, https://doi.org/10.1594/PANGAEA.854372

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Abstract:
As an estimate of plant-available N, this data set contains measurements of inorganic nitrogen (NO3-N and NH4-N, the sum of which is termed mineral N or Nmin) determined by extraction with 1 M KCl solution of soil samples 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.
Soil sampling and analysis: Five soil cores (diameter 0.01 m) were taken at a depth of 0 to 0.15 m of the mineral soil from each of the experimental plots in March and October 2008. In October 2008, also the plots of the management experiment, that altered mowing frequency and fertilized subplots (see further details below) were sampled. Samples of the soil cores per plot (subplots in case of the management experiment) were pooled during each sampling campaign. NO3-N and NH4-N concentrations were determined by extraction of soil samples with 1 M KCl solution and were measured in the soil extract with a Continuous Flow Analyzer (CFA, AutoAnalyzer, Seal, Burgess Hill, United Kingdom).
Related to:
Oelmann, Yvonne; Buchmann, Nina; Gleixner, Gerd; Habekost, Maike; Roscher, Christiane; Rosenkranz, Stephan; Schulze, Ernst-Detlef; Steinbeiss, Sibylle; Temperton, Vicky; Weigelt, Alexandra; Weisser, Wolfgang; Wilcke, Wolfgang (2011): Plant diversity effects on aboveground and belowground N pools in temperate grassland ecosystems: Development in the first 5 years after establishment. Global Biogeochemical Cycles, 25(2), n/a-n/a, https://doi.org/10.1029/2010GB003869
Oelmann, Yvonne; Wilcke, Wolfgang; Temperton, Vicky; Buchmann, Nina; Roscher, Christiane; Schumacher, Jens; Schulze, Ernst-Detlef; Weisser, Wolfgang (2007): Soil and Plant Nitrogen Pools as Related to Plant Diversity in an Experimental Grassland. Soil Science Society of America Journal, 71(3), 720, https://doi.org/10.2136/sssaj2006.0205
Further details:
Roscher, Christiane; Schumacher, Jens; Baade, Jussi; Wilcken, Sara; Gleixner, Gerd; Weisser, Wolfgang; 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: 2008-01-01T00:00:00 * Date/Time End: 2008-12-31T00:00:00
Minimum DEPTH, soil: 0.075 m * Maximum DEPTH, soil: 0.075 m
Event(s):
JenExp_2008 (Jena Experiment 2008) * Latitude: 50.946100 * Longitude: 11.611300 * Date/Time Start: 2008-01-01T00:00:00 * Date/Time End: 2008-12-31T00:00:00 * Location: Thuringia, Germany * Device: Experiment (EXP)
Comment:
In addition to measurements of mineral nitrogen from KCl-extractions of soil samples, measurements of total nitrogen determined from dried soil samples and measurements of dissolved nitrogen in soil solution are available.
This datasets is part of a time series of soil nitrogen measurements in the Main Experiment since 2002 (doi:10.1594/PANGAEA.854372).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Experimental plotExperimental plotDetailed explanations of plots and the plant diversity gradient are provided in the section "further details".
2Depth, soil, minimumDepth soil minm
3Depth, soil, maximumDepth soil maxm
4DEPTH, soilDepth soilmGeocode
5Date/time startDate/time startof sampling campaign
6Date/time endDate/time endof sampling campaign
7Treatment: mowingTreat mowDetailed explanations of treatments are provided in the section "further details".
8Treatment: weedingTreat weedDetailed explanations of treatments are provided in the section "further details".
9Treatment: weeding historyTreat weed histDetailed explanations of treatments are provided in the section "further details".
10Treatment: seed additionTreat seed addDetailed explanations of treatments are provided in the section "further details".
11Treatment: fertilizingTreat fertDetailed explanations of treatments are provided in the section "further details".
12Treatment: droughtTreat droughtDetailed explanations of treatments are provided in the section "further details".
13Treatment: aboveground: pesticideTreat abovegr pestDetailed explanations of treatments are provided in the section "further details".
14Treatment: below pesticideTreat below pestDetailed explanations of treatments are provided in the section "further details".
15Treatment: molluscideTreat mollusDetailed explanations of treatments are provided in the section "further details".
16Treatment: nematicideTreat nemaDetailed explanations of treatments are provided in the section "further details".
17Treatment: eartworm exclosureTreat eartworm exclDetailed explanations of treatments are provided in the section "further details".
18Treatment: phytometersTreat phytoDetailed explanations of treatments are provided in the section "further details".
19Treatment: specialTreat specialDetailed explanations of treatments are provided in the section "further details".
20Ammonium per unit sediment massNH4/sedµg/gKCl-extraction
21Nitrate per unit sediment massNO3/sedµg/gKCl-extraction
Size:
11456 data points

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