03059naa a2200217 a 450000100080000000500110000800800410001910000200006024500920008026000090017252023040018165000120248565000190249765000090251670000160252570000150254170000190255670000150257570000160259077302350260615714722009-01-27       2008    bl uuuu     u00u1 u    #d1 aMARCHÃO, R. L.  aSoil macrofauna under integrated crop-livestock systems in a Cerrado Ferralsol, Brazil.  c2008  aIntegrated crop-livestock systems (ICLS) have been recommended in Brazil as an alternative to conventional and/or continuous land use systems and have increased production of both crops and livestock. ICLS systems that seem to be the best for conserving diversity and sustaining high levels of abundance of the macrofauna and are strongly promoted by agronomic research in Brazil. We hypothesized that the adoption of RMPs, mainly ICLS based in no-tillage, would have a favorable effect on the development of an abundant and diverse soil and litter fauna, which in turn would assist in restoring soil fertility and site productivity. In this regard, the objectives of this study were estimate the effects of integrated crop-livestock systems, associated with two tillage and fertilization regimes, on the abundance and diversity (measured by morphoespecies richness) of the macrofauna in comparison with continuous systems. Four different soil management systems were studied: continuous pasture; continuous crop; crop/pasture rotation and pasture/crop rotation. The native Cerrado was used as a reference condition. Macrofauna was sampled with three replicates for each land use systems (each plot 40 x 50 m) according TSBF methodology and all individuals were counted and identified at the morphoespecies levels. Total density and diversity at morphoespecies levels was determined for each plot. A total of 194 morphospecies were found, distributed among 30 groups. The most representative groups observed, in order to decrease of density, were: Isoptera, Coleoptera larvae, Formicidae, Oligochaeta, Coleoptera adult, Diplopoda, Hemiptera, Diptera larvae, Arachnida, Chilopoda, Lepidoptera, Gasteropoda, Blattodea and Orthoptera. Soil management systems and tillage have impacts on the structure of soil macrofauna communities in Cerrado soils. Integrated systems (crop/pasture and vice-versa) associated to no-tillage present more favorable conditions for the development of soil macrofauna (Coleoptera and Oligochaeta) in comparison with continuous systems and represent alternative land use systems which are useful for soil biodiversity conservation compared to conventional and continuous systems. Index terms: soil invertebrates, biodiversity, crop-pasture rotation, no-tillage, soil quality  aCerrado  aFauna Edáfica  aSolo1 aLAVELLE, P.1 aCELINI, L.1 aBALBINO, L. C.1 aVILELA, L.1 aBECQUER, T.  tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. 1 CD-ROM.