Table 2.

Characteristics of census routes used at Kibale National Park, Uganda and the results of the censuses conducted over four periods in old-growth forest (statistics provided in the original studies) [47,85].

	1970–1976	1980–1981	1996–1997	2005–2006
route length (km)	4.0	4.0	4.0	4.0
number of census walks	61	28	25	22
distance censused (km)	244	112	100	88
group density	5.36	5.46	5.50	4.21
mean group size	—	—	37.17	52.07
individual density	—	—	204	219
groups per kilometre walked	0.824	1.144	0.636	0.465
individuals per kilometre walked	—	—	24	24