Mountain Lions of the Black Hills

400

350

300

250

Population siz

e

200

150

100

50

0

popsize

pslow

poplowsem

popwharv

popharvdisp

1994 1996 1998 2000

Year

2002 2004 2006

figure 4.4. Initial population modeling based on starting

population of 15 mountain lions and rate of increase of r = 0.33.

Lines represent incorporation of the standard error about the

estimated rate of increase and the addition of harvest for the

Black Hills mountain lion population. Popsize = estimated

population size with no mortality; pslow = population size, with

mortality; poplowsem = pslow and one standard error lower rate

of increase; popwharv = popsize with harvest; popharvdisp =

popsize considering dispersal.

Table 4.2. Survival rates for mountain lions tracked in the Black Hills from 1999 to 2005

pooled among years and separated by cohort

Cohort N

Survival

(S ± SE)

Mean days

tracked + SE

Adult Males 4 0.89 + 0.05 1569.5 + 481.5
Subadult Males 8 0.63 + 0.18 118.1 + 24.1
Adult Females 14 0.86 + 0.07 713.1 + 15.2
Subadult Females 5 1.00 + 0.00 274. 3 + 37. 9
Dependent Younga 15 0.67 + 0.11 155.1 + 34.3

Sourcea : Thompson, Jenks, and Fecske 2014.
Survival rates/days tracked for dependent young are reported from time of capture to date of death, date
of censor, or date of in de pen dence (for individuals surviving to in de pen dence).