Abstract
Here we consider that the corrosion of polished bared metal coupons can be used as a passive sensor to detect or identify the lower limit of water availability suitable for biological activity in Atacama Desert soils or solid substrates. For this purpose, carbon steel coupons were deposited at selected sites along a west–east transect and removed at predetermined times for morphological inspection. The advantage of this procedure is that the attributes of the oxide layer (corrosion extent, morphology and oxide phases) can be considered as a fingerprint of the atmospheric moisture history at a given time interval. Two types of coupons were used, long rectangular shaped ones that were half-buried in a vertical position, and square shaped ones that were deposited on the soil surface. The morphological attributes observed by SEM inspection were found to correlate to the so-called humectation time which is determined from local meteorological parameters. The main finding was that the decreasing trend of atmospheric moisture along the transect was closely related to corrosion behaviour and water soil penetration. For instance, at the coastal site oxide phases formed on the coupon surface rapidly evolve into well-crystallized species, while at the driest inland site Lomas Bayas only amorphous oxide was observed on the coupons.
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References
Connon SA, Lester ED, Shafaat HS, Obenhuber DC, Ponce A (2007) Bacterial diversity in hyperarid Atacama Desert soils. J Geophys Res. https://doi.org/10.1029/2006JG000311
Crits-Christoph A, Robinson CK, Barnum T, Fricke WF, Davila AF, Jedynak B, McKay CP, Diruggiero J (2013) Colonization patterns of soil microbial communities in the Atacama Desert. Microbiome 1:1–28
Davila AF, Gómez-Silva B, de los Ríos A, Ascaso C, Olivares H, McKay CP, Wierzchos J (2008) Facilitation of endolithic microbial survival in the hyperarid core of the Atacama Desert by mineral deliquescence. J Geophys Res 113(G1):2156–2202
de los Ríos A, Valea S, Ascaso C, Davila AF, Kastovsky J, McKay CP, Gómez-Silva B, Wierzchos J (2010) Comparative analysis of the microbial communities inhabiting halite evapourites of the Atacama Desert. Int Microbiol 13(2):79–89
Forsberg J, Hedberg J, Leygraf C, Nordgren J, Duda LC (2010) The initial stages of atmospheric corrosion of iron in a saline environment studied with time-resolved in situ x-ray transmission. J Electrochem Soc 157(3):C110–C115
Kidron GJ, Herrnstadt I, Barzilay E (2002) The role of dew as a moisture source for sand microbiotic crusts in the Negev Desert Israel. J Arid Environ 52(4):517–533
Lester ED, Satomi M, Ponce A (2007) Microflora of extreme arid Atacama Desert soils. Soil Biol Biochem 39(2):704–708
McKay CP, Friedmann EI, Gomez-Silva B, Caceres-Villanueva L, Andersen DT, Lanheim R (2003) Temperature and moisture conditions for life in the extreme arid region of the Atacama Desert: four years of observations including the El Niño of 1997–1998. Astrobiology 3(2):393–406
Navarro-González R, Rainey FA, Molina P, Bagaley DR, Hollen BJ, de la Rosa J, Small AM, Quinn RC, Grunthaner FJ, Cáceres L, Gomez-Silva B, McKay CP (2003) Mars-like soils in the Atacama Desert, Chile, and the dry limit of microbial life. Science 302:1018–1021
O’Loughlin EJ, Shelly DK, Kenneth MK, Roseann C, Russell EC (2003) Reduction of AgI, AuIII, CuII, and HgII by FeII/FeIII hydroxysulfate green rust. Chemosphere 53(5):437–446
Treybal RE (1980) Operaciones de Transferencia de Masa 2/e, 2nd edn. McGraw-Hill, México
Warren-Rhodes KA, Rhodes KL, Pointing SB, Ewing SA, Lacap DC, Gómez-Silva B, Amundson R, Friedmann EI, McKay CP (2006) Hypolithic cyanobacteria, dry limit of photosynthesis, and microbial ecology in the hyperarid Atacama Desert. Microb Ecol 52(3):389–398
Wierzchos J, Ascaso C, McKay CP (2006) Endolithic cyanobacteria in halite rocks from the hyperarid core of the Atacama Desert. Astrobiology 6(3):415–422
Wierzchos J, Cámara B, de Los Ríos A, Davila AF, Sánchez-Almazo IM, Artieda O, Wierzchos K, Gómez-Silva B, McKay CP, Ascaso C (2011) Microbial colonization of Ca-Sulfate crusts in the hyperarid core of the Atacama Desert: implications for the search for life on Mars. Geobiology 9(1):44–60
Wierzchos J, Davila AF, Sánchez-Almazo IM, Hajnos M, Swieboda R, Ascaso C (2012) Novel water source for endolithic life in the hyperarid core of the Atacama Desert. Biogeosciences 9(3):3071–3098
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This project was supported by CeBIB, Center for Biotechnology and Bioengineering, Chile, and NASA financed project Atacama Rover Astrobiology Drilling Studies, United States.
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Cáceres, L., Davila, A.F., Soliz, A. et al. Corrosion of bare carbon steel as a passive sensor to assess moisture availability for biological activity in Atacama Desert soils. Antonie van Leeuwenhoek 111, 1293–1299 (2018). https://doi.org/10.1007/s10482-018-1037-5
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DOI: https://doi.org/10.1007/s10482-018-1037-5