Density of ungulates in the original survey area, 2005–2010a.

[L = total transect length walked; n = number of observations of animal clusters, CV% = percentage co-efficient of variation, 95% CI = upper and lower 95% confidence intervals].aFor this analysis the 2010 data were truncated to include only the area sampled between 2005–2008 (i.e. original survey area) in order to make meaningful comparisons over time.bEstimates for 2008 and 2010 are based on time-specific detection functions, whereas estimates for 2005–2007 are based on a global detection function derived from pooled data over this period.cWhen observations from entire extended survey area in 2010 are included the average cluster sizes is 3.1.

[L = 总样带行走长度（total transect length walked）；n = 动物集群观测次数（number of observations of animal clusters）；CV% = 变异系数百分比（percentage coefficient of variation）；95% CI = 95%置信区间上下限（upper and lower 95% confidence intervals）]
a. 本分析对2010年的数据进行截断处理，仅纳入2005—2008年的采样区域（即原始调查区域），以开展具有实质意义的跨时间比较。
b. 2008年与2010年的估计值基于特定时间检测函数（time-specific detection function），而2005—2007年的估计值则基于该时段合并数据推导得到的全局检测函数（global detection function）。
c. 若纳入2010年整个扩展调查区域的观测数据，则平均集群大小为3.1。