The Trend of GaeMngmn 
AIo lopoU 
The Natioal Forest* were pl      une ma        t in 1". 
Up to that ti, the gam     onsevatioan       t had given birth to only 
two major  deas 
The first was the resm   tion or park Ide-withdrawin 
sames of ge rae from economic develomt with a view to t 
petution of threatened species. 
The  eond was the ide   of limiting the anul kill on hu 
ing grouds to the annual incremet or *atal Ireas of the gae 
thereon. This idea of limitatioa of kill was really contemporaneous with

National Forests, and part of its evelo.t may be credited to the fo. 
esters wo had them incharge* 
In the interim, however, =0 adittonal major idea has f 
This idea is corollary to the ida of limitlig the kill to the 
annual increet. It asserts that the amawal inrmnt of say given gm 
population may be increased at will 'by maipulating Its ae 
inarease is limited only by the carrying capacity of the rang, or (sore 
rarely) by the unimped increase rate or 'b.dng potential" of the speces.

For Instance, a herd of 20     r ma  nw be holding it os       e 
a kill of one buck per year. Under the "limitation of kill" iea
the kill- 
Ing of only one would be allowed.  But uer the idea of    nviro   ntal con.

trol' som  factor swh as food, cover, predators, disease, or parasites wouid4