Geophysical subsurface imaging for ecological applications

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dc.contributor.authorJayawickreme, Dushmantha H.
dc.contributor.authorJobbágy, Esteban G.
dc.contributor.authorJackson, Robert B.
dc.date.accessioned2015-10-19T13:20:03Z
dc.date.available2015-10-19T13:20:03Z
dc.date.copyright2013
dc.date.issued2013
dc.description.abstractEcologists, ecohydrologists, and biogeochemists need detailed insights into belowground properties and processes, including changes in water, salts, and other elements that can influence ecosystem productivity and functioning. Relying on traditional sampling and observation techniques for such insights can be costly, time consuming, and infeasible, especially if the spatial scales involved are large. Geophysical imaging provides an alternative or complement to traditional methods to gather subsurface variables across time and space. In this paper,wereview aspects of geophysical imaging, particularly electrical and electromagnetic imaging, that may benefit ecologists seeking clearer understanding of the shallow subsurface. Using electrical resistivity imaging, for example, we have been able to successfully show the effect of land-use conversions to agriculture on salt mobilization and leaching across kilometer-long transects and to depths of tens of meters. Recent advances in ground-penetrating radar and other geophysical imaging methods currently provide opportunities for subsurface imaging with sufficient detail to locate small (≥5 cmdiameter) animal burrows and plant roots, observe soil-water and vegetation spatial correlations in small watersheds, estuaries, and marshes, and quantify changes in groundwater storage at local to regional scales using geophysical data from ground- and spacebased platforms. Ecologists should benefit from adopting these minimally invasive, scalable imaging technologies to explore the subsurface and advance our collective research.en
dc.format.mimetypeapplication/pdf
dc.identifier.citationJayawickreme, D.H., Jobbágy, E.G., & Jackson, R.B. (2013). Geophysical subsurface imaging for ecological applications. New Phytologist. doi: 10.1111/nph.12619en
dc.identifier.urihttp://hdl.handle.net/10625/54824
dc.language.isoen
dc.publisherNew Phytologist Trusten
dc.subjectGEOGRAPHIC INFORMATION SYSTEMSen
dc.subjectELECTRICAL RESISTIVITY IMAGINGen
dc.subjectHYDROLOGYen
dc.subjectGROUNDWATERen
dc.subjectGROUND PENETRATING RADARen
dc.subjectECOSYSTEMSen
dc.subjectSOIL WATER BALANCEen
dc.subjectSOIL CHEMISTRYen
dc.subjectLAND MANAGEMENTen
dc.subjectENVIRONMENTAL DEGRADATIONen
dc.titleGeophysical subsurface imaging for ecological applicationsen
dc.typeJournal Article (peer-reviewed)en
idrc.copyright.holderThe Authors
idrc.copyright.holderNew Phytologist Trust
idrc.dspace.accessIDRC Onlyen
idrc.noaccessDue to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d'auteur, le texte intégral de cet extrant de recherche n'est pas accessible dans la Bibliothèque numérique du CRDI, et il n'est pas possible d'en faire la demande à la Bibliothéque du CRDI.en
idrc.project.componentnumber106601001
idrc.project.number106601
idrc.project.titleFloods, Droughts and Farming on the Plains of Argentina and Paraguay, Pampas and Chaco Regionsen
idrc.recordsserver.bcsnumberIC01-947-22
idrc.rims.adhocgroupIDRC SUPPORTEDen

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