20. Rodent communities associated with three traditional agroecosystems in the San Luis potosi plateau, Mexico.
Agriculture, Ecosystems and Environment, 33, 1991, pp. 363-375
This paper analyzes the rodent richness and abundance of the farmed and unfarmed areas of three agroecosystems in the San Luis Potosi Plateau, Mexico.
Increases in weed cover are generally associated with increases in rodent richness. Farms with weedy vegetation between buildings were found to hold larger and more diverse rodent populations than clean farms.
The variation in the rodent communities of agroecosystems is due to the structural differences of the latter. Understanding the relationship between the characteristics of the agrohabitats and the rodent communities should be useful for developing new principles of environmental management which must be the basis of new methods of rodent pest regulation.
The following conclusions can be drawn from this study:
- The simple agroecosystems had fewer species than their unfarmed counterparts, in contrast with the most diverse agroecosystem where no impoverishment occured. Only the simple system with abundant resources was subject to a population outbreak. This supports the hypotheses of structural heterogeneity-diversity and diversity-stability. The adoption of diverse agroecosystems might help to reduce rodent pest outbreaks.
1214 92 - 10/141
Review, book, Africa, Zimbabwe, survey, grain storage losses, strategies, traditional methods
KETERERE, M. and D. GIGA
[Ukrainian] [English] [Russian]