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| Titel |
On the contribution of the soil fauna to the macropores |
| VerfasserIn |
Stefano Barontini, Paolo Vitale, Mattia Comincini, Dario Pezzotti, Marco Peli, Stefano Armiraglio, Massimo Tomirotti, Roberto Ranzi |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250129108
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| Publikation (Nr.) |
 EGU/EGU2016-9178.pdf |
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| Zusammenfassung |
| Soil fauna play an important role in characterizing the soil structure, and they are one of the
main macropore sources, together with roots, swelling and local erosion. In an hydrological
perspective, according to most of the authors, macropores are meati with meaningfully small
capillary action, that is with a characteristic transverse–length greater than some tens of
micrometers. Macropores importance is crucial for the hydrological cycle, as they are seat of
preferential flow and they contribute to key hydrological processes, viz infiltration,
percolation and subsurface runoff.
In the framework of a wider investigation which aims at deepening the comprehension of
the role played by the macropores in characterising the soil hydrological response (at spatial
scales from the local to the slope one), we present a literature reanalysis focused on the
capability of soil fauna to dig nests, holes, burrows, and subsoil tunnels and rooms.
Particularly we examinated data about fauna with dimensions ranging from small arthropods
and anellids to some big chordates.
As a result we present a classification approach which aims at enlightening the
hydrological features of the holes, e.g. structure, length, main direction, tortuosity, transverse
section, displaced soil volume, hydraulic radius, digging technique, affected soil layers, in
view of comparing the hydrological fallouts of different soil diggers. |
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