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  • AGE; Calcium; Calcium/Titanium ratio; Calcium (centered log ratio); DEPTH, sediment/rock; ecosystem dynamics; Germany; Haemelsee; Haemelsee_Haem13; Iron; Iron/Titanium ratio; Iron (centered log ratio); Lake Haemelsee, Germany; log-Calcium/Titanium ratio; log-Iron/Titanium ratio; Niederreiter Piston corer; NPC; ORDINAL NUMBER; Potassium; Potassium (centered log ratio); Silicon; Silicon (centered log ratio); Titanium; Titanium (centered log ratio); X-ray fluorescence (XRF); XRF  (1)
  • EPOS  (1)
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Keywords
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  • 1
    Publication Date: 2024-03-06
    Description: Abstract
    Description: Intercropping is the simultaneous growth of two or more crops in the same space for a significant part of their life cycle (Willey, 1979). In this context, samples from one farm experiments in the growing season 2015/2016 and 2016/2017, embedded in the cropping systems of one arable farm in the surrounding of Pisa, central-western part of Italy, were collected for analysis. The treatments were: PCW, a temporary intercropping system of wheat and persian clover, sown in paired rows; CONTROLSTRIP, unfertilized wheat as a sole crop, sown in paired rows.
    Description: Methods
    Description: The samples were collected from a farm located in Valtriano, around 20 km from Pisa (43°36’N 10°29’E). The temporary intercropping system comprises common wheat (Triticum aestivum L., cv. Bolero) and persian clover (Trifolium resupinatum L., cv. Laser). Sampling of above-ground plant biomass was done by hands in March 2016 and 2017. For each treatment, above-ground plant biomass was collected several plots which includes three subplots with dimension of 0.25m2 in 2016 and 0.075 m2 in 2017. The samples collected, only for the green part of the plant, were dried at 60°C for 48 h. Then, coarse grinding of the plant fibres (about 1 mm in diameter) was carried out, followed by further cryogenic grinding.
    Keywords: EPOS ; multi-scale laboratories ; geochemistry and microscopy ; geochemistry data ; EARTH SCIENCE 〉 BIOSPHERE 〉 VEGETATION 〉 NITROGEN
    Type: Dataset , Dataset
    Location Call Number Expected Availability
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  • 2
    Publication Date: 2024-06-12
    Description: This dataset provides geochemical composition data for the Lateglacial sediment sequence retrieved from Lake Hämelsee (Germany) in 2013, determined using an Itrax X-ray fluorescence (XRF) core scanner. Selected geochemical major and minor elements (Ti, Si, Ca, Fe) expressed as counts per second, as elemental ratios, as centered log-ratios (CLR) and as log-ratios are presented against both depth (m) and age (cal yr. BP). The XRF data was used to provide information on LGIT landscape dynamics at lake Hämelsee. The geochemical composition of the sediments was determined on fresh core splits using an Itrax X-ray fluorescence (XRF) core scanner equipped with a Cr tube. Measurements were performed at 200 µm resolution during 20s exposure time per step at 30 kV tube voltage and 40 mA tube current. The analyses were performed in the laboratories of GFZ, Potsdam.
    Keywords: AGE; Calcium; Calcium/Titanium ratio; Calcium (centered log ratio); DEPTH, sediment/rock; ecosystem dynamics; Germany; Haemelsee; Haemelsee_Haem13; Iron; Iron/Titanium ratio; Iron (centered log ratio); Lake Haemelsee, Germany; log-Calcium/Titanium ratio; log-Iron/Titanium ratio; Niederreiter Piston corer; NPC; ORDINAL NUMBER; Potassium; Potassium (centered log ratio); Silicon; Silicon (centered log ratio); Titanium; Titanium (centered log ratio); X-ray fluorescence (XRF); XRF
    Type: Dataset
    Format: text/tab-separated-values, 243908 data points
    Location Call Number Expected Availability
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