COMPARATIVE POPULATION ECOLOGY OF RODENTS IN CROPLAND OF THE WESTERN SICHUAN PLAIN Ⅰ.POPULATION DYNAMICS AND REPRODUCTION
Mark-recapture experiment in the Western Sichuan Plain provided data on population density, biomass and reproduction of Rattus nitidus, Rattus norvegicus,Rattus niviventer and Rattus flavipectus. The differences in population density,biomass and frequency of appearance suggested that R. nitidus is the dominant species, R. norvegicus and R. niviventer are common species, and R. flavipectus is rare species in the rodent community. With the highest seasonality index and lowest coefficient of variation, R. nitidus shows the most significant seasonal pattern,and the lowest fluctuation in population density and biomass. In contrast,R. flavipectus,shows the highest fluctuation and no significant seasonal pattern. The dominant species can reproduce in most months, the reproduction of rare species confine in few months, common species have more reproductive potential than other species. The dynamics and reproduction of rodents in same community show some extent diversity among dominant,common and rare species, for coexistence to use the resources in same habitat.
Comparative population ecologyCroplandPopulation dynamicsReproductionRodents
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