
significance than transportation expenditures--the North Fork Sun River 
above Gibson Reservoir [20_]and the North Platte River [17] --extraor- 
dinary expenses for guide or packing services were involved, 
The type of fishery--cold-water (trout) or warm-water-- 
affects the daily expenditure. Warm-water fishermen use less special- 
ized and less expensive equipment than cold-water fishermen, This is 
borne out by the studies conducted in the field and by the special survey 
of Montana fishermen. Another factor influencing investment expendi- 
tures is the number of days that each type of fisherman goes fishing, 
According to the Montana survey [8], warm-water fishermen go fish- 
ing more frequently than cold-water fishermen--16,4 days per year for 
warm-water fishermen as compared to 12.5 days for cold-water fisher- 
men, The daily cost of investment items is proportionately lower for 
warm-water fishermen because of the greater use of his equipment. 
In general, annual expenses constitute a relatively small 
part of the total daily expenditure and are about the same for both 
warm-water and cold-water fishermen, 
Multiplication of the average daily expenditure by the total 
number of fisherman days, divided by the total yield in pounds, gives 
the expenditure per pound of fish, | ; 
Variations in the expenditure per pound of fish between the 
two types of fishing, the different areas, and the different years of 
study on areas where studies were for more than 1] year are attribut- 
able to one or more of three major factors: (1) the daily expenditure 
per fisherman, (2) the rate of catch, and (3) the average weight of the 
fish taken, | 
The expenditure per pound of fish at Ocean Lake during the 
summer of 1948 was almost double that for the summer of 1947, 
primarily because the average rate of catch in fish per hour of effort 
went down from 8,3 in the first season to 5.2 in the second season 
[2, 3]. The average weight of the fish taken (about 0,3 pounds per 
year) and the daily expenditure was about the same for each year of 
study. 
The difference in the expenditure per pound of fish be- 
tween 1949 and 1950 at Deerfield Reservoir was due primarily to a 
decrease in the average weight of fish taken, although there was a 
slight decline in the average rate of catch in 1950 [6]. The average 
