期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Survival and maturation rates of the African rodent, Mastomys natalensis: density-dependence and rainfall 被引量:2
1
作者 Vincent SLUYDTS Laurent CRESPIN +2 位作者 Stephen DAVIS Mauricio LIMA Herwig LEIRS 《Integrative Zoology》 SCIE CSCD 2007年第4期220-232,共13页
Survival and maturation rates of female Mastomys natalensis were analysed based on a ten-year monthlycapture-recapture data set. We investigated whether direct and delayed density dependent and independent (rainfall)v... Survival and maturation rates of female Mastomys natalensis were analysed based on a ten-year monthlycapture-recapture data set. We investigated whether direct and delayed density dependent and independent (rainfall)variables accounted for the considerable variation in demographic traits. It was estimated that seasonal and annualcovariates accounted for respectively 29 and 26% of the total variation in maturation rates and respectively 17 and11% of the variation in survival rates. Explaining the between-year differences in maturation rates with annual pastrainfall or density did not improve the model fit. On the other hand we showed that maturation rates were correlatednegatively with density the previous month and positively to cumulative rainfall over the past three months.Survival estimates of both adults and subadults varied seasonally, with higher estimates during the increase phase(dry season). The subadults were characterised by a very high survival rate (> 0.95) during this phase. In thedecrease phase only minor differences were found between survival rates of subadults and adults. We found that39% of the between-year variation in survival can be explained by accumulated rainfall over the past year. 展开更多
关键词 CAPTURE-RECAPTURE MASTOMYS MATURATION multistate model SURVIVAL
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部