Ecosystem Composition Controls the Fate of Rare Earth Elements during Incipient Soil Genesis
Abstract
The rare earth elements (REE) are increasingly important in a variety of science and economic fields, including (bio)geosciences, paleoecology, astrobiology, and mining. However, REE distribution in early rock-microbe-plant systems has remained elusive. We tested the hypothesis that REE mass-partitioning during incipient weathering of basalt, rhyolite, granite and schist depends on the activity of microbes, vascular plants (Buffalo grass), and arbuscular mycorrhiza. Pore-water element abundances revealed a rapid transition from abiotic to biotic signatures of weathering, the latter associated with smaller aqueous loss and larger plant uptake. Abiotic dissolution was 39% of total denudation in plant-microbes-mycorrhiza treatment. Microbes incremented denudation, particularly in rhyolite, and this resulted in decreased bioavailable solid pools in this rock. Total mobilization (aqueous + uptake) was ten times greater in planted compared to abiotic treatments, REE masses in plant generally exceeding those in water. Larger plants increased bioavailable solid pools, consistent with enhanced soil genesis. Mycorrhiza generally had a positive effect on total mobilization. The main mechanism behind incipient REE weathering was carbonation enhanced by biotic respiration, the denudation patterns being largely dictated by mineralogy. A consistent biotic signature was observed in La:phosphate and mobilization: solid pool ratios, and in the pattern of denudation and uptake.
- Authors:
-
- Univ. of Arizona, Tucson, AZ (United States). Biosphere 2
- Univ. of Arizona, Tucson, AZ (United States). Biosphere 2; Univ. of Arizona, Tucson, AZ (United States). Department of Soil, Water & Environmental Science
- Univ. of Arizona, Tucson, AZ (United States). Department of Soil, Water & Environmental Science
- Univ. of California, Irvine, CA (United States)
- Univ. of Arizona, Tucson, AZ (United States). Lunar and Planetary Laboratory
- Univ. of Arizona, Tucson, AZ (United States). Department of Soil, Water & Environmental Science; Univ. of Arizona, Tucson, AZ (United States). Arizona Laboratory for Emerging Contaminants
- Univ. of Arizona, Tucson, AZ (United States). Biosphere 2; Williams College, Williamstown, MA (United States)
- Univ. of Arizona, Tucson, AZ (United States). Biosphere 2; The Univ. of Caribe, Cancún (Mexico)
- Univ. of Arizona, Tucson, AZ (United States). Biosphere 2; Univ. of the Americas Puebla (Mexico)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); United States-Mexico Commission for Educational and Cultural Exchange (COMEXUS); Thomas R. Brown Foundation
- OSTI Identifier:
- 1624891
- Grant/Contract Number:
- AC02-76SF00515; EAR-1023215; EAR-0724958; EAR-1331408; EAR-1411609; EAR-1263251; EAR-1004353
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; Element cycles; Geochemistry
Citation Formats
Zaharescu, Dragos G., Burghelea, Carmen I., Dontsova, Katerina, Presler, Jennifer K., Maier, Raina M., Huxman, Travis, Domanik, Kenneth J., Hunt, Edward A., Amistadi, Mary K., Gaddis, Emily E., Palacios-Menendez, Maria A., Vaquera-Ibarra, Maria O., and Chorover, Jon. Ecosystem Composition Controls the Fate of Rare Earth Elements during Incipient Soil Genesis. United States: N. p., 2017.
Web. doi:10.1038/srep43208.
Zaharescu, Dragos G., Burghelea, Carmen I., Dontsova, Katerina, Presler, Jennifer K., Maier, Raina M., Huxman, Travis, Domanik, Kenneth J., Hunt, Edward A., Amistadi, Mary K., Gaddis, Emily E., Palacios-Menendez, Maria A., Vaquera-Ibarra, Maria O., & Chorover, Jon. Ecosystem Composition Controls the Fate of Rare Earth Elements during Incipient Soil Genesis. United States. https://doi.org/10.1038/srep43208
Zaharescu, Dragos G., Burghelea, Carmen I., Dontsova, Katerina, Presler, Jennifer K., Maier, Raina M., Huxman, Travis, Domanik, Kenneth J., Hunt, Edward A., Amistadi, Mary K., Gaddis, Emily E., Palacios-Menendez, Maria A., Vaquera-Ibarra, Maria O., and Chorover, Jon. Thu .
"Ecosystem Composition Controls the Fate of Rare Earth Elements during Incipient Soil Genesis". United States. https://doi.org/10.1038/srep43208. https://www.osti.gov/servlets/purl/1624891.
@article{osti_1624891,
title = {Ecosystem Composition Controls the Fate of Rare Earth Elements during Incipient Soil Genesis},
author = {Zaharescu, Dragos G. and Burghelea, Carmen I. and Dontsova, Katerina and Presler, Jennifer K. and Maier, Raina M. and Huxman, Travis and Domanik, Kenneth J. and Hunt, Edward A. and Amistadi, Mary K. and Gaddis, Emily E. and Palacios-Menendez, Maria A. and Vaquera-Ibarra, Maria O. and Chorover, Jon},
abstractNote = {The rare earth elements (REE) are increasingly important in a variety of science and economic fields, including (bio)geosciences, paleoecology, astrobiology, and mining. However, REE distribution in early rock-microbe-plant systems has remained elusive. We tested the hypothesis that REE mass-partitioning during incipient weathering of basalt, rhyolite, granite and schist depends on the activity of microbes, vascular plants (Buffalo grass), and arbuscular mycorrhiza. Pore-water element abundances revealed a rapid transition from abiotic to biotic signatures of weathering, the latter associated with smaller aqueous loss and larger plant uptake. Abiotic dissolution was 39% of total denudation in plant-microbes-mycorrhiza treatment. Microbes incremented denudation, particularly in rhyolite, and this resulted in decreased bioavailable solid pools in this rock. Total mobilization (aqueous + uptake) was ten times greater in planted compared to abiotic treatments, REE masses in plant generally exceeding those in water. Larger plants increased bioavailable solid pools, consistent with enhanced soil genesis. Mycorrhiza generally had a positive effect on total mobilization. The main mechanism behind incipient REE weathering was carbonation enhanced by biotic respiration, the denudation patterns being largely dictated by mineralogy. A consistent biotic signature was observed in La:phosphate and mobilization: solid pool ratios, and in the pattern of denudation and uptake.},
doi = {10.1038/srep43208},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {Thu Feb 23 00:00:00 EST 2017},
month = {Thu Feb 23 00:00:00 EST 2017}
}
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