# Kibale NP - Population Density

The first table is from Ghiglieri, M.P. (1984). The Chimpanzees of Kibale Forest. New York: Columbia University Press. pp. 52-53, Table 9. It is followed by a second table of population densities from other sources.

Estimated Densities of Populations of Chimpanzees in Kibale Forest, Uganda.
Enumeration
route
(north to
south)
Date(a)
Nests
counted
in strip
20m wide
(b)
True
length
of route
(km)a
(c)
Area
sampled
=(b)x
0.02km
(d)

___(a)___
(c)(.8)

x
(e)
____1____
weighted mean
life span of
nests (days)

x
(f)

1
Chimpanzee
nest/day

x
(g)

Ratio
of whole
population
to nest-
builders

=
(h)

Chimpanzees
km2

±
(i)

95%
confidence
interval
Compartment
15,14,13,
12 & 17
3 Mar.
& 13 May
1978
39.530.19119.6X__1__
119.2
X(f)X16
13
=0.20

Kanyawara
K30
6-11 Dec.
1977
5510.090.202340.3X__1__
100.1
X(f)X16
13
=4.18±0.945
Kanyawara
K30
11-12 May
1978
459.370.187300.8X__1__
102.4
X(f)X16
13
=3.61±0.945
Kanyawara
K30
23-24 Mar.
1981
379.030.181255.5X__1__
117.2
X(f)X24
20
=2.61±0.945
Kanyawara
to N. bound-
ary of
Kibale N.R.
17 April
1981
155.500.110170.5X__1__
100.1
X(f)X24
20
=2.04±0.945
Ngogo6 Jan.-27
Mar. 1977
22358.231.165239.3X__1__
112.0
X(f)X46
38
=2.59±0.959
Ngogo14 Jan.-17
Feb. 1978
359.680.194225.5X__1__
101.3
X(f)X46
38
=2.69±0.959
Ngogo18-20 Mar.
1981
3010.000.200187.5X__1__
115.3
X(f)X46
38
=1.97±0.959
S. boundary
Kibale N.R.
15 Jan.
1978
15.500.11011.4X__1__
107.7
X(f)X46
38
=0.13b±0.959
S. boundary
Kibale N.R.
21 Mar.
1981
215.500.110238.6X__1__
107.7
X(f)X46
38
=2.68±0.959
TOTAL for
Kibale N.R.

31088.911.778217.9X__1__
111.0
X(f)X46
38
=2.38±0.959
TOTAL for all
undisturbed
habitats

462122.902.458234.9X__1__
109.4
X(f)X1.21=2.60

Population Density (Indiv. per km2)Source
2.75 per km2(1989-1990)
(41/14.9km2)
Home range with minimum area polygon method
Chapman, C. A. & Wrangham, R. W. (1993). Range use of the forest chimpanzees of Kibale - implications for the understanding of chimpanzee social organization. Amer. J. Primatol. 31: 263-273.
4.82 per km2(1989-1990)
(41/8.5km2)
Home range based on sum of 200m x 200m cells an individual used and those cells that it would have had to travel through to get from the location of one observation to the next
See above.
5.26 per km2(1989-1990)
(41/7.8km2)
Home range based on sum of all cells in which the individual was seen
See above.
1.4 per km2
(1970-72) Kanyawara
Struhsaker, T.T.(1975). The Red Colobus Monkey. Chicago: Chicago University Press.
2.5 per km2
(50/20km2
Wrangham, R. W., Conklin, N. L., Chapman, C. A. & Hunt, K. D. (1991). The significance of fibrous foods for Kibale Forest chimpanzees. Phil. Trans. R. Soc. Lond. B. 334: 171-178.