Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Bachmann, Dörte; Guderle, Marcus; Roscher, Christiane; Milcu, Alexandru; Buchmann, Nina; Roy, Jacques (2017): Stomatal conductance, leaf greenness, and height of species in the Jena-Ecotron experiment. PANGAEA, https://doi.org/10.1594/PANGAEA.877650, In supplement to: Guderle, Marcus; Bachmann, Dörte; Milcu, Alexandru; Gockele, Annette; Bechmann, Marcel; Fischer, Christine; Roscher, Christiane; Landais, Damien; Ravel, Olivier; Devidal, Sébastien; Roy, Jacques; Gessler, Arthur; Buchmann, Nina; Weigelt, Alexandra; Hildebrandt, Anke (2017): Dynamic niche partitioning in root water uptake facilitates efficient water use in more diverse grassland plant communities. Functional Ecology, https://doi.org/10.1111/1365-2435.12948

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
This dataset contains stomatal conductance, leaf greenness, and height of species in the Jena-Ecotron Experiment in 2012. This experiment was conducted in the Montpellier European Ecotron (CNRS, France), an advanced controlled environment facility for ecosystem research, and aimed at understanding the impact of plant species richness (4 vs. 16 species) for ecosystem carbon and water fluxes.
The soil monoliths used in this experiment contained plant communities originating from the long- term Jena Experiment (50°57.1' N, 11°37.5' E, 130 m above sea level; mean annual temperature 9.3°C, mean annual precipitation 587 mm) established in May 2002. Twelve plots were selected for the Jena-Ecotron study according to the following criteria: (1) the four functional groups grasses, legumes, small and tall herbs were present, (2) realized species numbers were close to sown species richness, and (3) plots were equally distributed across the experimental field site to account for different soil textures. Large monoliths (2 m² surface area, diameter of 1.6 m, 2 m depth with a weight of 7 to 8 tons) including intact soil and vegetation were excavated in December 2011 and placed in lysimeters. In March 2012, before the start of the vegetation growth, the lysimeters were transported and installed in the Macrocosms platform of the Montpellier European Ecotron.
Stomatal conductance (gs, mmol/m²/s) was measured with a portable leaf porometer (SC-1 Leaf porometer, Decagon Devices, Pullman, USA). Measurements were done in the auto mode using the first 30 s of stomatal conductance data to predict the final stomatal conductance under true steady state conditions. Leaf greenness (SPAD; unitless), an estimate of chlorophyll concentrations, was obtained by measuring the absorption of two different wavelength (650 nm and 940 nm) with a portable chlorophyll meter (SPAD-502; Konica-Minolta, Osaka, Japan). The growth height of three shoots (Ind h; cm) per species and unit was measured with a ruler. Values of stomatal conductance, leaf greenness and growth height of the individual measurements were averaged per species per plot.
Keyword(s):
Jena-Ecotron Experiment
Related to:
Milcu, Alexandru; Eugster, Werner; Bachmann, Dörte; Guderle, Marcus; Roscher, Christiane; Gockele, Annette; Landais, Damien; Ravel, Olivier; Gessler, Arthur; Lange, Markus; Ebeling, Anne; Weisser, Wolfgang W; Roy, Jacques; Hildebrandt, Anke; Buchmann, Nina (2016): Plant functional diversity increases grassland productivity-related water vapor fluxes: an Ecotron and modeling approach. Ecology, 97(8), 2044-2054, https://doi.org/10.1890/15-1110.1
Milcu, Alexandru; Roscher, Christiane; Gessler, Arthur; Bachmann, Dörte; Gockele, Annette; Guderle, Marcus; Landais, Damien; Piel, Clement; Escpape, Christophe; Devidal, Sébastien; Ravel, Olivier; Buchmann, Nina; Gleixner, Gerd; Hildebrandt, Anke; Roy, Jacques (2014): Functional diversity of leaf nitrogen concentrations drives grassland carbon fluxes. Ecology Letters, 17(4), 435-444, https://doi.org/10.1111/ele.12243
Project(s):
Coverage:
Latitude: 50.946100 * Longitude: 11.611300
Date/Time Start: 2012-07-17T00:00:00 * Date/Time End: 2012-07-19T17:00:00
Minimum HEIGHT above ground: 0.5 m * Maximum HEIGHT above ground: 0.5 m
Event(s):
JenExp_2012 (Jena Experiment 2012) * Latitude: 50.946100 * Longitude: 11.611300 * Date/Time Start: 2012-01-01T00:00:00 * Date/Time End: 2012-12-31T00:00:00 * Location: Thuringia, Germany * Method/Device: Experiment (EXP)
Comment:
There are two types of missing values contained in datasets from the Jena Experiment. Empty cells represent missing values that result from the design of the experiment. Empty cells result when the respective value does not occur in the design and could thus not be measured. For example, in the case of species-specific biomass cells are left blank, when the species was not sown in 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 the Jena-Ecotron Experiment, which was part of the Jena Experiment.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Experimental plotExperimental plotGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
2Height aboveground, minimumHeight minmGuderle, MarcusSoil surface
3Height aboveground, maximumHeight maxmGuderle, Marcusrough approximation of max plant height
4HEIGHT above groundHeightmGuderle, MarcusGeocode – Average of min and max value
5Date/time startDate/time startGuderle, Marcusof sampling campaign
6Date/time endDate/time endGuderle, Marcusof sampling campaign
7Treatment: mowingTreat mowGuderle, MarcusSpeciefies if multiple samples per plot have been taken and are provided in the data file.
8Treatment: weedingTreat weedGuderle, MarcusSpeciefies if multiple samples per plot have been taken and are provided in the data file.
9Treatment: weeding historyTreat weed histGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
10Treatment: seed additionTreat seed addGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
11Treatment: fertilizingTreat fertGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
12Treatment: droughtTreat droughtGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
13Treatment: aboveground: pesticideTreat abovegr pestGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
14Treatment: below pesticideTreat below pestGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
15Treatment: molluscideTreat mollusGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
16Treatment: nematicideTreat nemaGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
17Treatment: eartworm exclosureTreat eartworm exclGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
18Treatment: phytometersTreat phytoGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
19Treatment: specialTreat specialGuderle, MarcusDetailed explanations of plots and the plant diversity gradient are provided in the section further details.
20DATE/TIMEDate/TimeGuderle, MarcusGeocode – Date and time of measurement
21SpeciesSpeciesGuderle, Marcus
22Stomatal conductanceStom conductancemmol/m2/sGuderle, MarcusMeasured on species level
23Leaf greenness, chlorophyll concentrationSPADGuderle, MarcusMeasured on species level
24Leaf heightLeaf hcmGuderle, MarcusMeasured on species level
25Individual heightInd hcmGuderle, MarcusMeasured on species level
Size:
7476 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)