Ecology, Productivity, and Management of Sage Grouse in Idaho

Dalke, Paul D.; Pyrah, Duane; Stanton, Don C.; Crawford, J. E.; Schlatterer, Edward F.

doi:10.2307/3798496

Cited by 141 publications

(166 citation statements)

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“…In reality, the pool will vary in size over time because some males change leks in response to differences in female availability (Gibson 1996) or attend leks more frequently as the season progresses (yearlings; Dalke et al 1963). Both processes may explain why male and female numbers did not co-vary closely at the largest leks.…”

Section: Discussionmentioning

confidence: 99%

How Predation Risk Affects the Temporal Dynamics of Avian Leks: Greater Sage Grouse versus Golden Eagles

Boyko

Gibson

Lucas

2004

The American Naturalist

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Section: Discussionmentioning

confidence: 99%

How Predation Risk Affects the Temporal Dynamics of Avian Leks: Greater Sage Grouse versus Golden Eagles

Boyko

Gibson

Lucas

2004

The American Naturalist

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“…These declines have been attributed to degradation of sagebrush (Artemesia spp.) stands from excessive livestock grazing during the late 1800s and early 1900s, sagebrush control programs, agricultural conversions, introduction of exotic plant species, and alteration of natural fire regimes (Dalke et al, 1963;Braun et al, 1977;Johnsgard, 1983;Crawford and Lutz, 1985;Martin, 1990;Drut, 1994). However, impacts of disease, including blood parasites, on sage-grouse populations have not been adequately investigated.…”

Section: Introductionmentioning

confidence: 99%

Blood Parasites in Sage-Grouse From Nevada and Oregon

Dunbar

Tornquist

Giordano

2003

Journal of Wildlife Diseases

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Peripheral blood smears from 196 adult and yearling female greater sage-grouse (Centrocercus urophasianus) were examined for blood parasites (167 from the breeding and 29 from the brood-rearing season) to determine prevalence of blood parasites, to attempt to correlate infection with chick survival, and to establish base-line values of prevalence in sage-grouse from Nevada and Oregon (USA). Birds were captured and released on two study areas during 1999-2001; Sheldon National Wildlife Refuge (SNWR) in northwestern Nevada, and Hart Mountain National Antelope Refuge (HMNAR) in southeastern Oregon. Birds from a third study area, Beaty's Butte grazing allotment (BB) in southeastern Oregon, were sampled in 2000 and 2001. Overall, 19 birds (10%) were positive for Leucocytozoon lovati (ϭL. bonasae), 1 (0.5%) for Plasmodium pedioecetii, and 2 (1%) for microfilariae. Although prevalence of L. lovati on HMNAR was 39% during the breeding season in 1999 and 100% during the brood-rearing season in 2000, statistically, prevalence of L. lovati among study areas and years was not different. However, there were statistical differences between capture periods. Overall, 31% of the hens were positive for L. lovati during the brood-rearing season compared to 6% during the breeding season. There was no difference in packed cell volume between infected and non-infected birds and no difference between age-classes. However, mean sage-grouse productivity on HMNAR was higher (1.6 chicks/hen) for non-infected (nϭ10) compared to infected hens (0.7 chicks/hen; nϭ7), during 1999. Based on these limited observations on HMNAR in 1999, the possible effects that L. lovati may have on young sage-grouse could be detrimental to sage-grouse populations in Nevada and Oregon.

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“…[ATS]) and were classified as yearling (first breeding season) or adult ( second breeding season) based on wing primary morphology (Eng 1955, Dalke et al 1963. Transmitters weighed 22 g and had a battery life expectancy of 869 days.…”

Section: Female Sage-grouse Monitoringmentioning

confidence: 99%