Towards achieving maximum sustainable yield management of the bearded pig (Sus barbatus) in a logged-over planted forest

Figures & data

Table 1. Fraction of total bearded pig harvested by age class (n=243).

Age class	Number of pigs harvested	Fraction of total harvested
	0–1 year	76	0.3127
1–2 years	38	0.1564
>2 years	129	0.5309

Table 2. Projected growth trajectory of a bearded pig population starting with one pair of adult male and female pigs with age-specific and mortality. See text for details.

Age groups	Number of bearded pigs after time interval (years)
	½	1	1 ½	2	2 ½	3	3 ½	4	4 ½	5
Adults	2	1.72	1.48	4.74	4.08	6.07	11.22	11.56	18.82	27.98
Sub-adults	0	0	3.64	0	2.70	6.30	2.00	9.33	12.38	10.37
Yearlings	0	4.67	0	3.46	8.09	2.56	11.98	15.90	13.32	32.52
Juveniles	6	0	4.44	10.39	3.29	15.39	20.41	17.10	41.76	48.00
Total	8	6.39	9.57	18.58	18.15	30.32	45.61	53.89	86.28	118.87

Table 3. MSY hunting effort, annual harvest rate, and steady-state bearded pig population number that correspond to the carrying capacity K of 12.78 animals per km².

Hunting effort	Annual harvest U*	Steady-state population at N*	Carrying capacity K
0.5882	5525	9394	18,787

Table 4. MSY hunting effort, annual harvest rate, and steady-state bearded pig population size that correspond to the carrying capacity K of 8.87 animals per km².

Hunting effort	Annual harvest U*	Steady-state population at N*	Carrying capacity K
0.5882	3835	6519	13,039

Table 5. Three scenarios for density estimates of bearded pig population in PFZ.

Scenario	Estimated population size		Whole of PFZ (4900 km^2)
	Planted forest area (1960 km^2)	Conservation zone (1470 km^2)
A	4900	3675	8575–12,250^a
B	4900	11,025	15,925
C	0	11,025	11,025
^aThe upper density estimate includes the remaining 30% of PFZ landscape comprising human settlements, traditional agricultural lands, and secondary forests.