Contribution of Calcium Oxalate to Soil-Exchangeable Calcium Public Deposited

http://ir.library.oregonstate.edu/concern/articles/707959262

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Lippincott Williams & Wilkins and can be found at:  http://journals.lww.com/soilsci/pages/default.aspx.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Acid deposition and repeated biomass harvest have decreased soil calcium (Ca) availability in many temperate forests worldwide, yet existing methods for assessing available soil Ca do not fully characterize soil Ca forms. To account for discrepancies in ecosystem Ca budgets, it has been hypothesized that the highly insoluble biomineral Ca oxalate might represent an additional soil Ca pool that is not detected in standard measures of soil-exchangeable Ca. We asked whether several standard method extractants for soil-exchangeable Ca could also access Ca held in Ca oxalate crystals using spike recovery tests in both pure solutions and soil extractions. In solutions of the extractants ammonium chloride, ammonium acetate, and barium chloride, we observed 2% to 104% dissolution of Ca oxalate crystals, with dissolution increasing with both solution molarity and ionic potential of cation extractant. In spike recovery tests using a low-Ca soil, we estimate that 1 M ammonium acetate extraction dissolved sufficient Ca oxalate to contribute an additional 52% to standard measurements of soil-exchangeable Ca. However, in a high-Ca soil, the amount of Ca oxalate spike that would dissolve in 1 M ammonium acetate extraction was difficult to detect against the large pool of exchangeable Ca. We conclude that Ca oxalate can contribute substantially to standard estimates of soil-exchangeable Ca in acid forest soils with low soil-exchangeable Ca. Consequently, measures of exchangeable Ca are unlikely to fully resolve discrepancies in ecosystem Ca mass balance unless the contribution of Ca oxalate to exchangeable Ca is also assessed.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Dauer, J. M., & Perakis, S. S. (2013). Contribution of Calcium Oxalate to Soil-Exchangeable Calcium. Soil Science, 178(12), 671-678. doi:10.1097/SS.0000000000000029
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2014-06-17T20:49:24Z (GMT). No. of bitstreams: 1 DauerJennyForestryContributionCalciumOxalate.pdf: 695172 bytes, checksum: f57f5c56618ddc48a90da90ccfe328ee (MD5) Previous issue date: 2013-12
  • description.provenance : Submitted by Erin Clark (erin.clark@oregonstate.edu) on 2014-06-17T20:49:08Z No. of bitstreams: 1 DauerJennyForestryContributionCalciumOxalate.pdf: 695172 bytes, checksum: f57f5c56618ddc48a90da90ccfe328ee (MD5)
  • description.provenance : Approved for entry into archive by Erin Clark(erin.clark@oregonstate.edu) on 2014-06-17T20:49:24Z (GMT) No. of bitstreams: 1 DauerJennyForestryContributionCalciumOxalate.pdf: 695172 bytes, checksum: f57f5c56618ddc48a90da90ccfe328ee (MD5)

Relationships

In Administrative Set:
Last modified: 07/26/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items