Gerschlauer, Friederike; Kiese, Ralf (2020): Soil organic carbon, isotopic ratios and nitrogen analysis from different samples of the Mt. Kilimanjaro [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.912584
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Abstract:
Fieldwork took place in February and March in 2011 and 2012. Sampling was conducted on 50-50m plots established at each of the 60 Kili studied sites (12 ecosystems x 5 transects). Surface litter and mineral topsoil (0–5 cm) were sampled at five locations at each plot. Additionally, fresh mature leaves of the five most abundant plant species covering 80% of total plant biomass per site were collected. All sampled materials (leaves, litter, and soil) were air-dried until constant weight, and leaf material was subsequently ovendried at 70 °C for 60 h prior to grinding. Soil was sieved to 2mm with visible root fragments being further removed prior to grinding with a mixer mill (MM200, Retsch, Haan Germany). Soil pH was determined with a pH meter (MultiCal SenTix61,WTW,Weilheim, Germany) in a 0.01MCaCl2 solution, with a CaCl2-to-soil ratio of 2 V 1. Particle size distribution was determined gravimetrically using the pipette method (van Reeuwijk, 2002). All soil, litter, and leaf samples were analysed with a dry combustion elemental analyser (Costech International S.p.A., Milano, Italy) fitted with a zero-blank autosampler coupled to a ThermoFinnigan DeltaPlus XL using continuous-flow isotope ratio mass spectrometry (CF-IRMS) for the determination of the abundance of elemental C and N and their stable isotopic composition (d13C, d15N). Precisions (standard deviations) on internal standards for elemental C and N concentrations and stable isotopic compositions were better than 0.08% and 0.2 ‰, respectively.
Related to:
Gerschlauer, Friederike; Saiz, Gustavo; Schellenberger Costa, David; Kleyer, Michael; Dannenmann, Michael; Kiese, Ralf (2019): Stable carbon and nitrogen isotopic composition of leaves, litter, and soils of various ecosystems along an elevational and land-use gradient at Mount Kilimanjaro, Tanzania. Biogeosciences, 16(2), 409-424, https://doi.org/10.5194/bg-16-409-2019
Project(s):
Kilimanjaro Research Group (KiLi)
Funding:
Coverage:
Median Latitude: -3.214667 * Median Longitude: 37.407000 * South-bound Latitude: -3.390000 * West-bound Longitude: 37.240000 * North-bound Latitude: -3.050000 * East-bound Longitude: 37.680000
Minimum DEPTH, soil: 0.025 m * Maximum DEPTH, soil: 0.025 m
Event(s):
KiLi_cof1 * Latitude: -3.240000 * Longitude: 37.250000 * Location: Mount Kilimanjaro, Tanzania * Comment: POLETYPE: a middle pole; ECOSYTEM: coffee plantation
Comment:
δ15N measurements are conducted to get an indication of how open or tight N cyling of different ecosystems/ landuse systems are. The higher the δ15N value the more 15N enriched the samples are. In addition 13C data and SOC were measured.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kiese, Ralf | |||
| 2 | Plot | Plot | Kiese, Ralf | |||
| 3 | Layer description | Layer | Kiese, Ralf | |||
| 4 | Depth, soil, minimum | Depth soil min | m | Kiese, Ralf | ||
| 5 | Depth, soil, maximum | Depth soil max | m | Kiese, Ralf | ||
| 6 | DEPTH, soil | Depth soil | m | Kiese, Ralf | Geocode | |
| 7 | δ15N/14N ratio | δ15N/14N | Kiese, Ralf | Isotope ratio mass spectrometer (IRMS) | mean value for one plot | |
| 8 | δ15N/14N ratio, standard error | δ15N/14N std e | ± | Kiese, Ralf | ||
| 9 | Nitrogen, total | TN | % | Kiese, Ralf | see sample method | mean value for one plot |
| 10 | Nitrogen, standard error | N std e | ± | Kiese, Ralf | ||
| 11 | δ12C/13C ratio | δ12C/13C | Kiese, Ralf | Isotope ratio mass spectrometer (IRMS) | mean value for one plot | |
| 12 | δ12C/13C ratio, standard error | δ12C/13C std e | ± | Kiese, Ralf | ||
| 13 | Organic carbon, soil | SOC | % | Kiese, Ralf | mean value for one plot |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
1320 data points