10.5880/GFZ.3.3.2018.001 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2024-03-07 urn:ogc:def:crs:EPSG:4326 Data supplement to: Chemistry and Microbiology of the Critical Zone along a steep climate and vegetation gradient in the Chilean Coastal Cordillera 2024-03-07 revision doi:10.5880/GFZ.3.3.2018.001 Oeser, Ralf Andreas GFZ German Research Centre for Geosciences, Potsdam, Germany author Stroncik, Nicole GFZ German Research Centre for Geosciences, Potsdam, Germany author Moskwa, Lisa-Marie GFZ German Research Centre for Geosciences, Potsdam, Germany author Bernhard, Nadine University of Tübingen; Soil Science and Geomorphology, Tübingen, Germany author Schaller, Mirjam University of Tübingen, Department of Geosciences, Tübingen, Germany author Canessa, Rafaella Philipps-University Marburg; Ecological Plant Geography, Marburg, Germany author van den Brink, Liesbeth University of Tübingen; Plant Ecology, Tübingen, Germany author Köster, Moritz Georg-August-University Göttingen; Biogeochemistry of Agroecosystems, Göttingen, Germany author Brucker, Emanuel University of Bayreuth, Institute of Soil Ecology, Bayreuth, Germany author Stock, Svenja Georg-August-University Göttingen; Soil Science of Temperate Ecosystems, Göttingen, Germany author Fuentes, Juan Pablo Universidad de Chile; Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Santiago de Chile, Chile author Godoy, Roberto Universidad Austral de Chile; Instituto de Ciencias Ambientales y Evolutivas, Valdivia, Chile author Matus, Francisco Javier Universidad de La Frontera, Departamento de Ciencias Químicas y Recursos Naturales, Scientific and Technological Bioresource Nucleus (BIOREN-UFRO), Temuco, Chile author Oses Pedraza, Rómulo Centro de Estudios Avanzados en Zonas Aridas (CEAZA), La Serena, Chile author Osses McIntyre, Pablo Pontificia Universidad Católica de Chile; Instituto de Geografía, Santiago de Chile, Chile author Paulino, Leandro Universidad de Concepción; Departamento de Suelos y Recursos Naturales, Facultad de Agronomía, Concepción, Chile author Seguel, Oscar Universidad de Chile; Facultad de Ciencias Agronómicas, Santiago de Chile, Chile author Bader, Maaike Y. Philipps-University Marburg; Ecological Plant Geography, Marburg, Germany author Boy, Jens Leibniz University Hannover; Institute of Soil Science, Hannover, Germany author Dippold, Michaela A. Georg-August-University Göttingen; Biogeochemistry of Agroecosystems, Göttingen, Germany author Ehlers, Todd A. University of Tübingen, Department of Geosciences, Tübingen, Germany author Kühn, Peter University of Tübingen; Soil Science and Geomorphology, Tübingen, Germany author Kuzyakov, Yakov Georg-August-University Göttingen; Soil Science of Temperate Ecosystems, Göttingen, Germany author Leinweber, Peter University of Rostock; Faculty of Agricultural and Environmental Sciences, Soil Science, Rostock, Germany author Scholten, Thomas University of Tübingen; Soil Science and Geomorphology, Tübingen, Germany author Spielvogel, Sandra Christian-Albrechts-University Kiel, Kiel, Germany author Spohn, Marie University of Bayreuth, Institute of Soil Ecology, Bayreuth, Germany author Übernickel, Kirstin University of Tübingen, Department of Geosciences, Tübingen, Germany author Tielbörger, Katja University of Tübingen; Plant Ecology, Tübingen, Germany author Wagner, Dirk GFZ German Research Centre for Geosciences, Potsdam, Germany author von Blanckenburg, Friedhelm GFZ German Research Centre for Geosciences, Potsdam, Germany author GFZ Data Services publisher The Chilean Coastal Cordillera features a spectacular climate and vegetation gradient, ranging from arid and unvegetated areas in the north to humid and forested areas in the south. The DFG Priority Program "EarthShape" (Earth Surface Shaping by Biota) uses this natural gradient to investigate how climate and biological processes shape the Earth's surface. We explored the critical zone, the Earth's uppermost layer, in four key sites located in desert, semidesert, mediterranean, and temperate climate zones of the Coastal Cordillera, with the focus on weathering of granitic rock. Here, we present first results from four ~2m-deep regolith profiles to document: (1) architecture of weathering zone; (2) degree and rate of rock weathering, thus the release of mineral-derived nutrients to the terrestrial ecosystems; (3) denudation rates; and (4) microbial abundances of bacteria and archaea in the saprolite. From north to south, denudation rates from cosmogenic nuclides are ~10 t km-2 yr-1 at the arid Pan de Azúcar site, ~20 t km-2 yr-1 at the semi-arid site of Santa Gracia, ~60 t km-2 yr-1 at the mediterranean climate site of La Campana, and ~30 t km-2 yr-1 at the humid site of Nahuelbuta. A and B horizons increase in thickness and elemental depletion or enrichment increases from north (~26 °S) to south (~38 °S) in these horizons. Differences in the degree of chemical weathering, quantified by the chemical depletion fraction (CDF), are significant only between the arid and sparsely vegetated site and the other three sites. Differences in the CDF between the sites, and elemental depletion within the sites are sometimes smaller than the variations induced by the bedrock heterogeneity. Microbial abundances (bacteria and archaea) in saprolite substantially increase from the arid to the semi-arid sites. With this study, we provide a comprehensive dataset characterizing the Critical Zone geochemistry in the Chilean Coastal Cordillera. This dataset confirms climatic controls on weathering and denudation rates and provides prerequisites to quantify the role of biota in future studies. The data are supplementary material to Oeser et al. (2018). All samples are assigned with International Geo Sample Numbers (IGSN), a globally unique and persistent Identifier for physical samples. The IGSNs are provided in the data tables and link to a comprehensive sample description in the internet. The content of the eight data tables is: Table S1: Catena properties of the four primary EarthShape study areas. Table S2: Major and selected trace element concentration for bedrock samples. Table S3 Normative modal abundance of rock-forming minerals. Table S4: Major and selected trace element concentration for regolith samples and dithionite and oxalate soluble pedogenic oxides. Table S5: Weathering indices CDF and CIA, and the mass transfer coefficients (τ) for major and trace elements along with volumetric strain (ɛ). Table S6: Chemical weathering and physical erosion rates Table S7: Relative microbial abundances in saprolite of the four study areas. Table S8: Uncorrected major and trace element concentration. The data tables are provided as one Excel file with eight spreadsheets, as individual tables in .csv format in a zipped archive and as printable PDF versions in a zipped archive. Complete Oeser, Ralf A. GFZ German Research Centre for Geosciences; Section 3.3 Earth Surface Geochemistry Ph.D. student oeser@gfz-potsdam.de http://https://www.gfz-potsdam.de/staff/ralf-oeser/?#publication informtion pointOfContact von Blanckenburg, Friedhelm GFZ German Research Centre for Geosciences; Section 3.3 Earth Surface Geochemistry; Freie Universität Berlin; Institute of Geological Science Head of GFZ Section 3.3: „Earth Surface Geochemistry“; Professor of the Geochemistry of the Earth Surface, Freie Universität Berlin fvb@gfz-potsdam.de http://https://www.gfz-potsdam.de/en/staff/fvb/ informtion pointOfContact denudation microbial abundance Chile climate National Parc Pan de Azucar Private Reserve Santa Gracia National Parc La Campana National Parc Nahuelbuta Coastal Cordillera EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > WEATHERING EARTH SCIENCE > LAND SURFACE > SOILS > MICROFLORA EARTH SCIENCE > LAND SURFACE > SOILS > SOIL CHEMISTRY NASA/GCMD Earth Science Keywords publication CC BY 4.0 CC BY 4.0 10.1016/j.catena.2018.06.002 DOI IsSupplementTo https://www.earthshape.net/ URL References eng geoscientificInformation Parque Nacional Pan de Azúcar -70.6629 -70.4965 -26.3754 -25.9829 Private Reserve Santa Gracia, Chile -71.295 -71.0222 -30.0669 -28.6957 Parque Nacional La Campana -71.3811 -70.2971 -33.3734 -32 Parque Nacional Nahuelbuta -73.2268 -72.7531 -37.9283 -37.5821 EarthShape Study Area (Chilean Coastal Cordillera) -73.1195 -70.1697 -37.9009 -25.9679 http://doi.org/10.5880/GFZ.3.3.2018.001 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information