Element contents and stable isotope analysis in plants from a nitrogen and potassium tracer experiment in the Chilean Coastal Cordillera


A tracer experiment was conducted in three study sites along a continental transect from arid to humid-temperate conditions in the Chilean Coastal Cordillera. The objective was to determine the short-term (<1 year) plant nitrogen (N) and potassium (K) acquisition from topsoil (A-Bw horizons), subsoil (Bw-BCw horizons), and saprolite (below BCw horizon). In February and March 2016, δ¹⁵N (as Na¹⁵NO₃, 99 at%) and the K analogs rubidium (as RbCl) and cesium (as CsCl) were injected in three soil depths around the focal plants: Gutierrezia resinosa (H.&A.) B. in the northernmost site (arid shrubland), Aristeguietia salvia (C.) K.&R. in the intermediate site (mediterranean woodland), and Araucaria araucana (M.) K. in the southernmost site (temperate rainforest). The injection holes were drilled with an auger and the excavated soil material was collected to determine soil N, K, Rb, and Cs contents. In November 2016, shoot and root material of labeled and unlabeled plants was collected. The N, K, Rb, and Cs contents and the stable isotope ratios of N (expressed as δ¹⁵N) in plant tissue were measured. The tracer recovery by plants was determined by the δ¹⁵N enrichment and the shift of Rb and Cs contents normalized to the K content between reference plants and labeled plants.The data set contains the N, K, Rb, and Cs contents as well as the stable isotope ratios of N in plant biomass.

DOI https://doi.pangaea.de/10.1594/PANGAEA.942978
Related Identifier https://doi.pangaea.de/10.1594/PANGAEA.942976
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.942978
Creator Stock, Svenja; Koester, Moritz; Nájera, Francisco; Boy, Jens; Matus, Francisco; Merino, Carolina; Abdallah, Khaled; Spielvogel, Sandra; Gorbushina, Anna A; Dippold, Michaela Anna; Kuzyakov, Yakov
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2022
Funding Reference Deutsche Forschungsgemeinschaft, Bonn, KU 1184 36 1
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 1805 data points
Discipline Earth System Research
Spatial Coverage (-73.013W, -37.807S, -71.063E, -29.758N); Chile
Temporal Coverage Begin 2016-02-25T00:00:00Z
Temporal Coverage End 2016-11-29T00:00:00Z