Soil Magnetic Susceptibility: A Quantitative Proxy of Soil Drainage for Use in Ecological Restoration

Flooded, saturated, or poorly drained soils are commonly anaerobic, leading to microbially induced magnetite/maghemite dissolution and decreased soil magnetic susceptibility (MS). Thus, MS is considerably higher in well-drained soils (MS typically 40-80 x 10⁻⁵ standard international [SI]) compared t...

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Bibliographic Details
Published in:	Restoration ecology Vol. 16; no. 4; pp. 657 - 667
Main Authors:	Grimley, David A, Wang, Jing-Shu, Liebert, Derek A, Dawson, Jeffrey O
Format:	Journal Article
Language:	English
Published:	Malden, USA Malden, USA : Blackwell Publishing Inc 01-12-2008 Blackwell Publishing Inc Blackwell Publishing Ltd
Subjects:	Acer saccharinum Carya laciniosa Drainage Environmental restoration Fraxinus pennsylvanica hydric soils Liriodendron tulipifera magnetic susceptibility Magnetism plant adaptations Prunus serotina Quercus alba restoration soil drainage Soil sciences Soil testing Illinois USA, Illinois
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Summary:	Flooded, saturated, or poorly drained soils are commonly anaerobic, leading to microbially induced magnetite/maghemite dissolution and decreased soil magnetic susceptibility (MS). Thus, MS is considerably higher in well-drained soils (MS typically 40-80 x 10⁻⁵ standard international [SI]) compared to poorly drained soils (MS typically 10-25 x 10⁻⁵ SI) in Illinois, other soil-forming factors being equal. Following calibration to standard soil probings, MS values can be used to rapidly and precisely delineate hydric from nonhydric soils in areas with relatively uniform parent material. Furthermore, soil MS has a moderate to strong association with individual tree species' distribution across soil moisture regimes, correlating inversely with independently reported rankings of a tree species' flood tolerance. Soil MS mapping can thus provide a simple, rapid, and quantitative means for precisely guiding reforestation with respect to plant species' adaptations to soil drainage classes. For instance, in native woodlands of east-central Illinois, Quercus alba, Prunus serotina, and Liriodendron tulipifera predominantly occur in moderately well-drained soils (MS 40-60 x 10⁻⁵ SI), whereas Acer saccharinum, Carya laciniosa, and Fraxinus pennsylvanica predominantly occur in poorly drained soils (MS <20 x 10⁻⁵ SI). Using a similar method, an MS contour map was used to guide restoration of mesic, wet mesic, and wet prairie species to pre-settlement distributions at Meadowbrook Park (Urbana, IL, U.S.A.). Through use of soil MS maps calibrated to soil drainage class and native vegetation occurrence, restoration efforts can be conducted more successfully and species distributions more accurately reconstructed at the microecosystem level.
Bibliography:	http://dx.doi.org/10.1111/j.1526-100X.2008.00479.x ArticleID:REC479 ark:/67375/WNG-TR976GT0-F istex:FB3DB3791122EA878B53832D633A26BB57CE6462 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	1061-2971 1526-100X
DOI:	10.1111/j.1526-100X.2008.00479.x