Dynamics of a Reintroduced Population of red-legged Partridges Alectoris rufa in Central Italy

Alberto Meriggi ； Roberto Mazzoni Della Stella

《Wildlife Biology》 10卷1期 (2004/03) Pp. 1-9

並列摘要

In order to evaluate the success of a population of red-legged partridges Alectoris rufa reintroduced into a 33.7 km^2 study area, we estimated 15 demographic parameters from 1996 to 1999 by regularly monitoring the population through winter, spring and summer mapping censuses. During the study period, late winter population and spring dispersal decreased, pair number, brood number, brood production rate, chick survival and over winter losses were stable, whereas average brood size, juvenile number, age ratio, adult spring to summer survival, late summer population, and population growth rate from spring to late summer all increased. The population showed a moderate improvement in the overall productivity, mainly related to increased production of young and to a decrease in adult mortality. The improvement in breeding performance took place, in particular, after the second year of study with the conclusion of the releasing session of reared birds.

並列關鍵字

Alectoris rufa ； central Italy ； demography ； red-legged partridge ； reintroduction