Search for: [Description = "Population dynamics of five rodent species were studied, from March 1991 to August 1994, in an area located in the ecotonal steppe of northwestern Patagonia, Argentina \(at about 40°S\). Seasonal and annual fluctuactions in population numbers were found in all sigmodontine species. The reproductive period, sex ratio and longevity of the five species were also studied."]

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