Interactions between Soil Structure and Soil Organic Matter: Contribution of Pedofauna Activity (Comunicazione a convegno)

Type
Label
  • Interactions between Soil Structure and Soil Organic Matter: Contribution of Pedofauna Activity (Comunicazione a convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Alternative label
  • Laura Gargiulo1*, Giacomo Mele1, Gilda Buscemi2, Ottavio Soppelsa3 and Fabio Terribile2 (2014)
    Interactions between Soil Structure and Soil Organic Matter: Contribution of Pedofauna Activity
    in 20th WORLD CONGRESS OF SOIL SCIENCE, Corea, Jeju, 8-13 giugno 2014
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Laura Gargiulo1*, Giacomo Mele1, Gilda Buscemi2, Ottavio Soppelsa3 and Fabio Terribile2 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Institute for Agriculture and Forestry in the Mediterranean (ISAFOM), National Research Council (CNR), Italy 2 Department of Agriculture, University of Naples 'Federico II', Italy 3 Department of Biology, University of Naples 'Federico II', Italy (literal)
Titolo
  • Interactions between Soil Structure and Soil Organic Matter: Contribution of Pedofauna Activity (literal)
Abstract
  • Soil fauna plays an important role in the interaction between soil structure and soil organic matter. Burrowing and excretion activities induce new pore formation and stabilization of pre-existing ones modifying soil functioning also in its role of carbon pool. In this study we aimed to identify and quantify the contribution of different soil organisms on soil structure using soil image analysis techniques at soil micromorphology scale Undisturbed soil sampling and soil micro- and macro-fauna identification were performed in sites characterized by different soil management and soil types in Valle Telesina, Benevento, Italy. Different biological features (faecal pellets, organic residues, channels and chambers, etc.) have been identified by means of soil thin sections observation and their contribution to the soil pore and aggregate size distribution was quantified by means of image analysis procedures based on mathematical morphology. The results of this preliminary study have allowed to observe that the combination of different biological activities in the same soil produce a pronounced multimodality in pore size distribution, and then an increase of the complexity and of the quality of soil structure. Moreover different organisms induce specific signals on soil pore size distribution, providing data useful to simulate the contribution of different biological activities in fluid and solute transport. (literal)
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