TY  - JOUR
A1  - Oeser, Ralf Andreas
A1  - Stroncik, Nicole
A1  - Moskwa, Lisa-Marie
A1  - Bernhard, Nadine
A1  - Schaller, Mirjam
A1  - Canessa, Rafaella
A1  - van den Brink, Liesbeth
A1  - Köster, Moritz
A1  - Brucker, Emanuel
A1  - Stock, Svenja
A1  - Pablo Fuentes, Juan
A1  - Godoy, Roberto
A1  - Javier Matus, Francisco
A1  - Oses Pedraza, Romulo
A1  - Osses McIntyre, Pablo
A1  - Paulino, Leandro
A1  - Seguel, Oscar
A1  - Bader, Maaike Y.
A1  - Boy, Jens
A1  - Dippold, Michaela A.
A1  - Ehlers, Todd
A1  - Kühn, Peter
A1  - Kuzyakov, Yakov
A1  - Leinweber, Peter
A1  - Scholten, Thomas
A1  - Spielvogel, Sandra
A1  - Spohn, Marie
A1  - Ubernickel, Kirstin
A1  - Tielbörger, Katja
A1  - Wagner, Dirk
A1  - von Blanckenburg, Friedhelm
T1  - Chemistry and microbiology of the Critical Zone along a steep climate and vegetation gradient in the Chilean Coastal Cordillera
JF  - Catena : an interdisciplinary journal of soil science, hydrology, geomorphology focusing on geoecology and landscape evolution
N2  - From north to south, denudation rates from cosmogenic nuclides are similar to 10 t km(-2) yr(-1) at the arid Pan de Aziicar site, similar to 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 similar to 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 (similar to 26 degrees S) to south (similar to 38 degrees 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.
KW  - Weathering
KW  - Denudation
KW  - Microbial abundance
KW  - Climate
KW  - Chile
Y1  - 2018
U6  - https://doi.org/10.1016/j.catena.2018.06.002
SN  - 0341-8162
SN  - 1872-6887
VL  - 170
SP  - 183
EP  - 203
PB  - Elsevier
CY  - Amsterdam
ER  -