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Microspectroscopy reveals dust-derived apatite grains in acidic, highlyweathered Hawaiian soils4.36 MB
Published VersionCC BY V4.0, Open Access
Supplementary Material (supplemental)CC BY V4.0, Open Access
Journal article
Microspectroscopy reveals dust-derived apatite grains in acidic, highlyweathered Hawaiian soils
Geoderma, Vol.381, pp.1-11
2021
Abstract
Dust deposition is an important source of phosphorus (P) to many ecosystems. However, there is little evidence of dust-derived P-containing minerals in soils. Here we studied P forms along a well-described climatic gradient on Hawaii, which is also a dust deposition gradient. Soil mineralogy and soil P forms from six sites along the climatic gradient were analyzed with bulk (X-ray diffraction and P K-edge X-ray absorption near edge structure) and microscale (X-ray fluorescence, P K-edge X-ray absorption near edge structure, and Raman) analysis methods. In the wettest soils, apatite grains ranging from 5 to 30 µm in size were co-located at the micro-scale with quartz, a known continental dust indicator suggesting recent atmospheric deposition. In addition to co-location with quartz, further evidence of dust-derived P included backward trajectory modeling indicating that dust particles could be brought to Hawaii from the major global dust-loading areas in central Asia and northern Africa. Although it is not certain whether the individual observed apatite grains were derived from long-distance transport of dust, or from local dust sources such as volcanic ash or windblown fertilizer, these observations offer direct evidence that P-containing minerals have reached surface layers of highly-weathered grassland soils through atmospheric deposition.
Details
- Title
- Microspectroscopy reveals dust-derived apatite grains in acidic, highlyweathered Hawaiian soils
- Authors
- Christian Vogel (Author) - Federal Institute For Materials Research and TestingJulian Helfenstein (Author) - Swiss Federal Institute of Technology in ZurichMichael S Massey (Author) - Environment CanterburyRyo Sekine (Author) - University of the Sunshine Coast, Queensland, School of Science and Engineering - LegacyRuben Kretzschmar (Author) - Swiss Federal Institute of Technology in ZurichLuo Beiping (Author) - Swiss Federal Institute of Technology in ZurichPeter Thomas (Author) - Swiss Federal Institute of Technology in ZurichOliver A Chadwick (Author) - University of California, Santa BarbaraFederica Tamburini (Author) - Swiss Federal Institute of Technology in ZurichCamille Rivard (Author) - Synchrotron soleilHannes Herzel (Author) - Federal Institute For Materials Research and TestingChristian Adam (Author) - Federal Institute For Materials Research and TestingAna E Pradas del Real (Author) - European Synchrotron Radiation FacilityHiram Castillo-Michel (Author) - European Synchrotron Radiation FacilityLucia Zuin (Author) - Canadian Light SourceDongniu Wang (Author) - Canadian Light SourceRoberto Félix (Author) - Helmholtz-Zentrum BerlinBenedikt Lassalle-Kaiser (Author) - Synchrotron soleilEmmanuel Frossard (Author) - Swiss Federal Institute of Technology in Zurich
- Publication details
- Geoderma, Vol.381, pp.1-11
- Publisher
- Elsevier BV
- Date published
- 2021
- DOI
- 10.1016/j.geoderma.2020.114681
- ISSN
- 1872-6259; 0016-7061
- Copyright note
- © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).
- Organisation Unit
- School of Science and Engineering - Legacy; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99472808802621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Soil Science
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