Characterisation of the three-dimensional structure of earthworm burrow systems using image analysis and mathematical morphology

Capowiez, Y, Pierret, A and Moran, CJ (2003) Characterisation of the three-dimensional structure of earthworm burrow systems using image analysis and mathematical morphology. Biology And Fertility of Soils, 38 5: 301-310. doi:10.1007/s00374-003-0647-9


Author Capowiez, Y
Pierret, A
Moran, CJ
Title Characterisation of the three-dimensional structure of earthworm burrow systems using image analysis and mathematical morphology
Journal name Biology And Fertility of Soils   Check publisher's open access policy
ISSN 0178-2762
Publication date 2003
Sub-type Article (original research)
DOI 10.1007/s00374-003-0647-9
Volume 38
Issue 5
Start page 301
End page 310
Total pages 10
Place of publication New York
Publisher Springer-verlag
Language eng
Abstract The aim of this work was to exemplify the specific contribution of both two- and three-dimensional (31)) X-ray computed tomography to characterise earthworm burrow systems. To achieve this purpose we used 3D mathematical morphology operators to characterise burrow systems resulting from the activity of an anecic (Aporrectodea noctunia), and an endogeic species (Allolobophora chlorotica), when both species were introduced either separately or together into artificial soil cores. Images of these soil cores were obtained using a medical X-ray tomography scanner. Three-dimensional reconstructions of burrow systems were obtained using a specifically developed segmentation algorithm. To study the differences between burrow systems, a set of classical tools of mathematical morphology (granulometries) were used. So-called granulometries based on different structuring elements clearly separated the different burrow systems. They enabled us to show that burrows made by the anecic species were fatter, longer, more vertical, more continuous but less sinuous than burrows of the endogeic species. The granulometry transform of the soil matrix showed that burrows made by A. nocturna were more evenly distributed than those of A. chlorotica. Although a good discrimination was possible when only one species was introduced into the soil cores, it was not possible to separate burrows of the two species from each other in cases where species were introduced into the same soil core. This limitation, partly due to the insufficient spatial resolution of the medical scanner, precluded the use of the morphological operators to study putative interactions between the two species.
Keyword Agriculture, Soil Science
X-ray Computer Tomography
Aporrectodea Nocturna
Allolobophora Chlorotica
Mathematical Morphology
Ray Computed-tomography
Allolobophora-chlorotica
Aporrectodea-nocturna
Lumbricus-terrestris
Soil Cores
Interspecific Interactions
3d Reconstruction
Quantification
Macropores
Water
Soil Science
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Sustainable Minerals Institute Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 24 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 13 Aug 2007, 13:54:20 EST