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

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128 Year 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1953 1955 1956 1957 1961 1962 Date of count Mar. 22-24 Mar. 7-14 Mar. 24-26 Mar. 9-12 Mar. 22-29 Mar. Mar. & Apr. Feb. 17-19 Feb. 28-Mar. 7 Mar. Feb. 10 Mar. 20-22 Mar. 20-26 Apr. 3-4 Data Actual count a Estimate Parkwide Northern Range Parkwide Northern Range Comments e source f 228 228' 250 250 Excellent weather, but sheep were scattered 21 due to mild winter. Includes 9 on North Yellowstone winter range outside the park. 272 272' 300 300 Sheep were counted separately from other 22 ungulates. None on North Yellowstone winter range outside the park. 200 200' 300 300 23 139 138 139 132 h Unfavorable weather, incomplete coverage. Mild late winter permitted sheep to scatter 24 25 making a count difficult. Includes 16 on North Yellowstone winter range outside the park. 182 176 140 176 176' 144 144' 101 192 189 121 ll8 148 300 280 280 280 250 200 170 170 Uncommon 200 Rare 200 249 250 200 170 170 (Count was probably mostly or entirely for the North Yellowstone winter range.) A number of areas where bighorn were regularly found weren't counted. Sheep were counted in conjunction with the North Yellowstone elk census. Some areas where sheep were occasionally found weren't covered. Two were on North Yellowstone winter range outside the park. Population status essentially static for many years. Count was intensive. Ideal conditions. All well*known wintering areas were covered by good observers, very good to excellent coverage. Population status not satisfactory. Fifteen counted on North Yellowstone winter range outside the park. Count only covered accessible parts of the 32 North Yellowstone winter range. It appears that an actual population decrease has occurr'.',ri. The population may be decreasing. Status is 33 unsatisfactory . Population probably static or decreasing. 34 Count by fixed*wing aircraft. 35 Helicopter count in conjunction with census 36 of North Yellowstone elk herd. Other ungulates not counted as accurately as elk. Helicopter count in conjunction with census of North Yellowstone elk herd. Special attention given to counting bighorn sheep. Helicopter count in conjunction with census of North Yellowstone elk herd. Special attention given to counting bighorn sheep. Continuously good flying weather. 26 27 28 29 30 31 37 38 39
129 Actual cQllnla Estimate Data Year Date of count Parkwide Northern Range Parkwide Northern Range Comments· source f 1963 200 40 1964 200 41 1965 Apr. 6-9 227 d 300 Helicopter census, partly during a special 42 flight to count sheep, but mostly done in conjunction with the helicopter census of the North Yellowstone elk herd. 1966 229 d 300 Count was based on frequent winter counts 43 by researcher John Oldemeyer. 1967 Mar. 22-27 231 d 300 Helicopter count in conjunction with the 44 census of the North Yellowstone elk herd. Probably not as accurate as the 1965 census. Eleven additional sheep were counted on Cinnabar Mtn. on the North Yellowstone winter range outside the park. 1968 178 (257)' 560 Counts by Piper Supercub in conjunction 45 with flights to check elk distribution. 160 = highest single count 257 = highest counts on major terrain features over several late winter flights. 1969 247 (295)' 560 Counts as described for 1968. 247 ~ 46 highest single count. 295 = highest counts on major terrain features over several late winter flights. 1970 323 (392)' 600 Counts as described for 1968. 332 ~ 47 highest single count. 392 = highest count on major terrain features over several late winter flights. Includes 8 at Golden Gate. a Ground counts unless otherwise specified. b Probably didn't include sheep that winter on higher peaks in the NE comer of the park (Mt. Norris, Thunderer, Abiathar Pk., Barronette Pk., and possibly Druid Pk.). Census didn't include the peaks mentioned above. d Census specifically did include most or all peaks mentioned in b above. ~ Comments in parentheses are mine and not from data sources. f DATA SOURCES: (1) Mills, 1937; (2) Acting Superintendent, 1912a; (3) Superintendent's Annual Report, 1919; (4) Superintendent's Annual Report, 1920; (5) Superintendent's Annual Report for 1921-22; (6) Superintendent's Annual Report, 1923; (7) Superintendent's Annual Report, 1924 for parkwide count and estimate, Superintendent's Monthly Report for January, 1924 for northern Yellowstone count; (8) Superintendent's Annual Report, 1925; (9) Superintendent's Annual Report, 1926; (10) Superintendent's Annual Report, 1927; (11) Superintendent's Annual Report, 1928; (12) Baggley, n.d.; (13) Baggley, 1931; (14) Edward's, 1932 and Anonymous, 1932; (15) Anonymous, 1933; (16) Anonymous, 1934; (17) Anonymous, 1936; (18) Barrows, 1936 and Parsons, 1936; (19) Barrows, 1937b; (20) Barrows, 1938b; (21) Barrows, 1939b; (22) Barrows, 1940; (23) Skinner, 1941a; (24) Superintendent's Annual Report, 1942; (25) Coleman, 1943; (26) Anonymous, 1944; (27) Anonymous, 1945a,c; (28) Anonymous, 1946; Rogers, 1946; Superintendent's Annual Report, 1946; (29) Rogers, 1947; Kittams, 1947; (30) Rogers, 1948; (31) Anonymous, 1949a,b; Coleman, 1949; (32) Anonymous, 1950; (33) Evans, 1951; (34) Anonymous, 1953; (35) Anonymous, 1955; Buechner, 1960; (36) Kittams, 1956; (37) Kittams, 1957a; (38) Howe, 1961a; (39) Howe, 1962a,b; (40) Howe, 1963b; (41) Howe, 1964; (42) Bannore, 1965a; Howe, 1965c; (43) 01demeyer, 1966; Bannore, 1966; (44) Barmore 1967b,c; (45) This study; Bannore, 1968a; Woolf, 1968; (46) This study; Bucknall. 1969; (47) This study; Buckna11, 1970.
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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
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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
Page 104 and 105: THE NORTHERN RANGE 88 not aware of
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
Page 116 and 117: , .. , , " , ! I ." ~, ~ " ,.\ ,•
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 142 and 143: Pronghorn counted during spring sur
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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