103. 
104. 
105. 
DISTURBANCE (GENERAL) , 
FLIGHT DISTANCE, U.S. 
LANDS, COLLARED PECCARY 
HARASSMENT , 
STATE PARKS AND 
de Vos, A. 1960. Behavior of barren 
ground caribou on their calving 
grounds. J. Wildl. Manage. 24: 250- 
258. 
As part of an ecological study of car~ 
ibou. in the Northwest Territories, 
reactions of caribou to human distur- 
bance were studied. The flight dis- 
tance of alerted caribou varied great~ 
ly with environmental conditions and 
band size. Cows with calves were more 
alarmed by disturbances than were 
calfless individuals. 
DISTURBANCE (GENERAL), 
DISTANCE, CARIBOU 
TUNDRA, FLIGHT 
de Vos, A. 1967. Wildlife management 
+n forests and ranges for aesthetical 
purposes. Pages 215-217 in Proceed- 
ings of the Society of American For- 
esters Meeting, 12-15 September 1966, 
Seattle, Wash. Society of American 
Foresters, Washington, D.C. 
The history of forest management for 
aesthetic purposes is reviewed, in- 
cluding current examples of nongame 
wildlife management in forests and 
ranges. A need for greater interest 
in nongame wildlife and nonconsumptive 
use of forest resources is expressed. 
FORESTS, RANGELAND, RECREATION MANAGE- 
MENT, U.S. NATIONAL FORESTS, WILDLIFE 
(GENERAL) 
Dean, F. C. 1976. Aspects of grizzly 
bear population ecology in Mount Mc- 
Kinley National Park. Pages 1A-113 
in M. R. Pelton, J. W. Lentfer, and G. 
E. Folk, eds. Bears--their biology 
and management. Third International 
Conference on Bear Research and Man- 
agement, June 1974, Binghamton, N.Y. 
and Moscow, USSR. IUCN Publ. New Ser. 
40, Morges, Switzerland. 
Aspects of grizzly bear populations in 
Mount McKinley National Park, Alaska, 
are presented and related to current 
management problems. The potential 
for bear-human problems is increasing 
as visitation increases and backcoun- 
try travel becomes more popular. 
22 
106. 
107. 
108. 
109. 
CAMPING, HIKING, TOURISM, TUNDRA, HUMAN 
HEALTH AND SAFETY, THREATENED AND ENDAN- 
GERED SPECIES, U.S. NATIONAL PARKS, 
GRIZZLY BEAR 
DeForge, J. R. 1972. Man's invasion 
into the bighorn's habitat. Trans. 
Desert Bighorn Counc. 16:112-115. 
From observations of a bighorn popula- 
tion in California, the author sug- 
gests that off-road vehicle use and 
other human disturbances caused a re- 
duction in the number of sheep using 
the area. 
DISTURBANCE (GENERAL), OFF-ROAD VEHI- 
CLES, DESERTS, BIGHORN SHEEP 
Stress: Is it 
Desert Big- 
DeForge, J. R. 1976. 
limiting bighorn? Trans. 
horn Counc. 20:30-31. 
The bighorn sheep is an ice-age mamma | 
that has become highly specialized, 
evolving essentially outside the in- 
fluence of man. Today, however, human 
encroachment on sheep habitats and 
disturbance of populations result in 
stress on bighorns, forcing them to 
adapt socially. Stress, frequently 
human-induced, appears to be a major 
limiting factor in_ the bighorn's 
struggle for survival. 
DISTURBANCE (GENERAL), HARASSMENT, DES~ 
ERTS, RANGELAND, WILDLIFE MANAGEMENT , 
BIGHORN SHEEP 
Dekker, D. 1967. Disappearance of the 
peregrine falcon as a breeding bird in 
a river valley in Alberta. Blue Jay 
25:175-176. 
The author discusses possible factors 
in the disappearance of falcons from a 
region in Alberta. Robbing of young 
by falconers, pesticides, and distur- 
bances by bird watchers and photogra- 
phers are held to be partly responsi~ 
ble. The disappearance of falcons has 
been characterized by = an apparent 
shortage of adult birds. 
HARASSMENT, WILDLIFE VIEWING, THREATENED 
AND ENDANGERED SPECIES, PRAIRIE FALCON, 
PEREGRINE FALCON 
Dekker, D. 1969. A plea for federal 
protection of the peregrine falcon. 
Il. Can. Field-Nat. 83:410-411. 

