Yellowstone's Northern Range - Greater Yellowstone Science ...

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Pronghorn counted during spring surveys on Yellowstone's northern range, 1971-1996. 126 Date Pronghorn Counted Comments Source' 1971 (Aprill) 13:; 1972 (January 28) 134 (Max.) (Max.) 1973 (March 9) 129 2 1974 (April 23-24) 103 1975 (February 18) 165 1976 (April 8) 130 1977 (March 15) 121 1978 (March 21) 146 1979 146 1979 (23 April) 152 1980 (April 8) 157 1981 (March 21) 102 1982 (April 17) 131 1983 (March 8) 310 1984 (March 23) 365 1985 (April 9) 364 1986 (February 28) 363 1987 (March 17) 478 1988 (April 14) 495 1989 (Apri19) 372 1990 (March 20) 472 1991 (April 2) 588? 1992 (March 24) 536 1993 (April 8) 416 1994 1995 235 1996 (March 25) 229 Highest of 5 counts listed for season. Highest of 5 counts listed for season. Highest of 5 counts listed for season. Highest of 5 counts listed for season. Highest of 5 counts listed for season. Helicopter survey by MDFWP. Highest of 3 counts listed for season. Reported as "best count" of season. Reported as "best count" of season. Reported as "best count" of season. Various file references refer to a total of 522,588, 591, and 594 on this date. Caslick indicates observation forms total 588 counted. 450 adults, 86 yearlings. 416 adults, 23 yearlings No count conducted "Poor count". "Counting conditions were excellent". 3 4 4 4 4 4 4 4 4 5 6 6 6 a DATA SOURCES: (1) Data compiled by M.D. Scott in Castick, 1. 1995. Unpubl. YNP Rept. on status of pronghorn infonnation, on file at YNP; (2) Houston Itr to Superintendent, Mar. 19, 1973, ill YCR file 1427, YNP. (3) Unpub!. Rept in YNP file N1427, Antelope; (4) Unpubl. rept. on Northern Yellowstone antelope count, F.I. Singer, obs., 1986, YNP files; (5) Memo dated Nov. 19, 1993 on file at YCR, YNP; (6) Unpubl. rept. of aerial count by I. Mack, YNP files.
127 Counts and estimates of bighorn sheep in Yellowstone National Park, 1880-1970. (Source: Barmore 1980.) Actual caunL 3 Estimate Data Year Date of count Parkwide Northern Range Parkwide Northern Range Comments C source f 1880 Sheep were abundant. 1887 Found on all mountain ranges. 1897 200 1912 210 Estimate based on counts or close 2 observation and are very nearly correct. 1919 Mountain sheep were seen in about the 3 usual numbers. 1920 200 ".. .it is evident that our estimated number of 4 200 in the park is too low if anything. " 1922 250 "Sheep scab, the disease that threatened for 5 a time to extenninate our mountain sheep, has practically disappeared and we have a large, thriving herd of about 250 ... " 1923 233 300+ 6 1924 Winter 200 217 300 (Most or all of count was probably on North 7 Yellowstone winter range.) 1925 Winter & Spring 195 600 (Most or all of count was probably on North 8 Yellowstone winter range.) 1926 Winter & Spring 217 600 (Most or all of count was pro~ably on North 9 Yellowstone winter range.) 1927 Winter & Spring 346 650 (Most or all of count was probably on North 10 Yellowstone winter range.) 1928 Feb. 170 500 Known losses of 9 to hunters and 31 to 11 scabies mites and lungworm infections . .. ... as determined by laboratory examination." Known losses were believed far short of actual losses during the year. 1929 120 120 b 12 1930 March 125 125 c 150 150 Increasing. 12 1931 April 101 101 c 150 150 Status much better than a few years ago. 13 1932 April 79 79 h 150 150 Sheep on some inaccessible peaks not 14 counted. (Probably those in the NE corner of the park.) No change in status. 1933 ? 82 82" 150 150 Counted along with all other ungulates. 15 1934 March 14-16 125 125" 150 150 Status more favorable than last year. 16 1935 ? 126 126 200 200 Count thought to be more accurate than 17 others for a number of years. 1936 Dec. 118 118 200 200 Count didn't cover all the sheep winter 18 range. 1937 Mar. 2-5 175 175 c 195 195 One of the most accurate and complete 19 counts ever taken. 1938 Feb. 24·26 181 181" 200 200 No change in population status. Includes 6 20 on North Yellowstone winter range outside the park.
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YELLOW"STONE'S NORTHERN RANGE COMPL
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Suggested citation: Yellowstone Nat
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c=J Northern Winter Range _ Boundar
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Aspen, willows, and biodiversity ..
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vii
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THE NORTHERN RANGE xii range criter
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THE NORTHERN RANGE 2 Figure 1.1. Ph
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THE NORTHERN RANGE tion. There was
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THE NORTHERN RANGE 6 Figure 1.6. Gr
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THE NORTHERN RANGE 8 Figure 1.8. El
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THE NORTHERN RANGE 10 unpopular or
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THE NORTHERN RANGE 12 earlier Yello
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THE NORTHERN RANGE 16 Northern rang
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Figure 2.3. Sum ot rotal annual riv
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THE NORTHERN RANGE 20 Figure 2.4 Tr
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THE NORTHERN RANGE 22 dendrochronol
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THE NORTHERN RANGE 24 Figure 2.7. A
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THE NORTHERN RANGE 26 et al. (1991)
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THE NORTHERN RANGE 28 earlier time,
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THE NORTHERN RANGE 32 systems-range
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THE NORTHERN RANGE 34 indicates the
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THE NORTHERN RANGE 36 Data were gat
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THE NORTHERN RANGE 38 grazed and un
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THE NORTHERN RANGE showed that graz
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Figure 4.1. Northern range, showing
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Figure 4.2. Willow distribution in
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THE NORTHERN RANGE 48 Figure 4.4. I
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THE NORTHERN RANGE 50 public lands,
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THE NORTIlERN RANGE 52 Figure 4.5.
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THE NORTHERN RANGE 54 able uncertai
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THE NORTHERN RANGE 56 to confirm an
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THE NORTHERN RANGE 58 RESEARCH RECO
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SOIL, EROSION, SEDIMENTS, AND WATER
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SOIL, EROSION, SEDIMENTS, AND WATER
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ated with ungulate winter ranges. T
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ELK POPULATION ISSUES IS YELLOWSTON
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ange grazing issue, Yellowstone man
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ELK POPULATION ISSUES 71 ... Other
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ELK POPULATION ISSUES 73 1996d), so
Page 91 and 92: ELK POPULATION ISSUES 75 the northe
Page 93 and 94: ELK POPULATION ISSUES 77 It has evo
Page 96 and 97: 4 , ~ 1 v " 'It , \ J~ ~""~ .:,~ ",
Page 98 and 99: THE NORTHERN RANGE 82 Competition t
Page 100 and 101: Figure 7.3. Bison winter range. Sin
Page 102 and 103: THE NORTHERN RANGE Figure 7.7. Envi
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Page 106 and 107: THE NORTHERN RANGE 90 tion size, an
Page 108 and 109: THE NORTHERN RANGE 92 activity (95
Page 110 and 111: THE NORTHERN RANGE 94 pursue the su
Page 112 and 113: THE NORTHERN RANGE 96 factors were
Page 114 and 115: THE NORTHERN RANGE Figure 7.13. Num
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Page 118 and 119: THE NORTHERN RANGE 102 complex set
Page 120 and 121: THE NORTHERN RANGE 104 practically
Page 122 and 123: THE NORTHERN RANGE 106 appear suppr
Page 124 and 125: AppendixA. Conferences, Meetings, a
Page 126 and 127: lJO Year Estimate Comment Source 19
Page 128 and 129: lJ2 , Estimated # of Elk Year Date
Page 130 and 131: lJ4 Winter Total Count 1967-68 397
Page 132 and 133: 116 Year Date of Count Parkwide Par
Page 134 and 135: 118 Counts and estimates of mule de
Page 136 and 137: 120 Northern Yellowstone winter ran
Page 138 and 139: 122 Population estimates and reduct
Page 140 and 141: 124 Actual count Inside Outside Est
Page 144 and 145: 128 Year 1939 1940 1941 1942 1943 1
Page 146 and 147: Ground and aerial counts of bighorn
Page 148 and 149: REFERENCE LIST NOTES ON THIS REFERE
Page 150 and 151: Pages 199-210 in Carbyn, L.N., S.H.
Page 152 and 153: Yellowstone National Park. Technica
Page 154 and 155: mammal mortality in the 1988 Yellow
Page 156 and 157: National Park. International Journa
Page 158 and 159: Mehus, C.A. 1995. Influences ofbraw
Page 160 and 161: __ , and __ . 1996a. Preburn root b
Page 162 and 163: Pages 127-138 in F.J. Singer, ed. E
Page 164 and 165: some northern Yellowstone elk. M.S.
Page 166: I I I I I
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