| Autor: |
Aguilera, Lorgio E, Gutiérrez, Julio R, Meserve, Peter L |
| Zdroj: |
Journal of Arid Environments; May 1999, Vol. 42 Issue: 1 p61-70, 10p |
| Abstrakt: |
Micro-organisms and nutrients were determined in soil samples (top 20 cm) collected underneath and outside the canopy of Adesmia bedwelliiin mid fall (April 1997), after 8 months of drought, and in mid spring (October 1997) after heavy winter rains associated with the 1997-ENSO in a Chilean coastal desert site. Bacteria and fungi were two orders of magnitude higher in mid spring, but no seasonal effects were detected for chemical parameters. Micro-organisms, organic matter and nitrogen content were significantly higher underneath shrub canopies, especially in mid fall. Micro-organism abundances were positively correlated with nitrogen levels and soil moisture. |
| Databáze: |
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