Grazing in sagebrush rangelands in western North America: implications for habitat quality for a sagebrush specialist, the pygmy rabbit
Meghan J. Camp A B E , Janet L. Rachlow A , Lisa A. Shipley B , Timothy R. Johnson C and Kelly D. Bockting D
+ Author Affiliations
- Author Affiliations
A Department of Fish and Wildlife Sciences, University of Idaho, Moscow, ID 83844-1136, USA.
B School of the Environment, Washington State University, Pullman, WA 99164, USA.
C Department of Statistical Science, University of Idaho, Moscow, ID 83844-1136, USA.
D Wildlife Biologist, Bureau of Land Management, Dillon, MT 59725, USA.
E Corresponding author. Email: meghan.camp@email.wsu.edu
The Rangeland Journal 36(2) 151-159 https://doi.org/10.1071/RJ13065
Submitted: 12 June 2013 Accepted: 26 January 2014 Published: 25 March 2014
Abstract
Livestock grazing is one of the primary uses of sagebrush rangelands in western North America; therefore, an understanding of the ecological implications of grazing on habitat quality for sagebrush-dependent wildlife is needed to help land managers balance multiple objectives for land use. We studied effects of cattle grazing on components of habitat for an uncommon sagebrush habitat specialist, the pygmy rabbit (Brachylagus idahoensis), which has been petitioned for endangered or threatened status in the USA. We evaluated multiple components of habitat before and after grazing in replicated control and treatment plots in a mesic, high-elevation sagebrush-steppe environment in south-western Montana, USA. We predicted that grazing would decrease the biomass of herbaceous forage, alter security cover, and increase rate of collapse of rabbit burrows, and we expected that these effects would be more pronounced during summer than spring. As expected, cattle grazing reduced the biomass of perennial grasses available to pygmy rabbits after grazing that occurred during either spring or summer, and the biomass of forbs after spring grazing. In contrast, grazing did not markedly influence the functional properties of vegetation related to predation risk or the integrity of rabbit burrow systems. In the context of the stocking rate of the allotments in our study (7.3 acres/Animal Unit Month, 2.95 ha/Animal Unit Month), annual cattle grazing did not seem to markedly change habitat for pygmy rabbits in our study area; however, longer-term and higher intensity grazing might result in more pronounced habitat changes. Understanding the ecological implications of cattle grazing on habitat quality for pygmy rabbits and other sagebrush-dependent wildlife can guide conservation strategies for these species on sagebrush rangelands managed under multiple-use policies.
Additional keywords: Artemisia, Brachylagus idahoensis, forage biomass, habitat specialist, sagebrush, security cover.
References
Anderson, J. E., and Inouye, R. S. (2001). Landscape-scale changes in plant species abundance and biodiversity of a sagebrush steppe over 45 years. Ecological Monographs 71, 531–556.| Landscape-scale changes in plant species abundance and biodiversity of a sagebrush steppe over 45 years.Crossref | GoogleScholarGoogle Scholar |
Augustine, D. J., and McNaughton, S. J. (1998). Ungulate effects of the functional species composition of plant communities, herbivore selectivity and plant tolerance. The Journal of Wildlife Management 62, 1165–1183.
| Ungulate effects of the functional species composition of plant communities, herbivore selectivity and plant tolerance.Crossref | GoogleScholarGoogle Scholar |
Austin, D. D., Urness, P. J., and Fierro, L. C. (1983). Spring livestock grazing affects crested wheatgrass regrowth and winter use by mule deer. Journal of Range Management 36, 589–593.
| Spring livestock grazing affects crested wheatgrass regrowth and winter use by mule deer.Crossref | GoogleScholarGoogle Scholar |
Avery, H. W., and Neibergs, A. G. (1997). Effects of cattle grazing on the desert tortoise, Gopherus agassizii, nutritional and behavioral interactions. In: ‘Proceedings of an International Conference on Conservation, Restoration, and Management of Tortoises and Turtles’. (Ed. J. Van Abbema.) pp. 13–20. (New York Turtle and Tortoise Society: New York)
Beck, J. L., and Peek, J. M. (2005). Diet composition, forage selection, and potential for forage competition among elk, deer, and livestock on aspen-sagebrush summer range. Rangeland Ecology and Management 58, 135–147.
| Diet composition, forage selection, and potential for forage competition among elk, deer, and livestock on aspen-sagebrush summer range.Crossref | GoogleScholarGoogle Scholar |
Bock, C. E., Saab, V. A., Rich, T. D., and Dobkin, D. S. (1993). Effects of livestock grazing on neo-tropical migratory land birds in western North America. In: ‘Status and Management of Neo-tropical Migratory Birds’. (Eds D. M. Finch and P. W. Stangel.) pp. 296–309. (US Dept. of Agriculture Forest Service: Fort Collins, CO.)
Bowyer, R. T., and Bleich, V. C. (1984). Effects of cattle grazing on selected habitats of southern mule deer. California Fish and Game 70, 240–247.
Brewer, T. K., Mosley, J. C., Lucas, D. E., and Schmidt, L. R. (2007). Bluebunch wheatgrass response to spring defoliation on foothill rangeland. Rangeland Ecology and Management 60, 498–507.
| Bluebunch wheatgrass response to spring defoliation on foothill rangeland.Crossref | GoogleScholarGoogle Scholar |
Briske, D. D., Derner, J. D., Brown, J. R., Fuhlendorf, S. D., Teague, W. R., Havstad, K. M., Gillen, R. L., Ash, A. J., and Willms, W. D. (2008). Rotational grazing on rangelands, reconciliation of perception and experimental evidence. Rangeland Ecology and Management 61, 3–17.
| Rotational grazing on rangelands, reconciliation of perception and experimental evidence.Crossref | GoogleScholarGoogle Scholar |
Camp, M. J. (2012). Habitat relationships, predation risk and the influence of cattle grazing on habitat for pygmy rabbits. MS Thesis, University of Idaho, Moscow, Idaho, USA.
Camp, M. J., Rachlow, J. L., Woods, B. A., Johnson, T. R., and Shipley, L. A. (2012). When to run and when to hide, the influence of concealment, visibility, and proximity to refugia on perceptions of risk. Ethology 118, 1010–1017.
| When to run and when to hide, the influence of concealment, visibility, and proximity to refugia on perceptions of risk.Crossref | GoogleScholarGoogle Scholar |
Camp, M. J., Rachlow, J. L., Woods, B. A., Johnson, T. R., and Shipley, L. A. (2013). Examining functional components of cover, the relationship between concealment and visibility in shrub-steppe habitat. Ecosphere 4, Art. No. 19.
| Examining functional components of cover, the relationship between concealment and visibility in shrub-steppe habitat.Crossref | GoogleScholarGoogle Scholar |
Clark, P. E., Krueger, W. C., Bryant, L. D., and Thomas, D. R. (2000). Livestock grazing effects on forage quality of elk winter range. Journal of Range Management 53, 97–105.
| Livestock grazing effects on forage quality of elk winter range.Crossref | GoogleScholarGoogle Scholar |
Connelly, J. W., and Braun, C. E. (1997). Long-term changes in sage grouse (Centrocercus urophasianus) populations in western North America. Wildlife Biology 3, 229–234.
Dale, V. H., Brown, S., Haeuber, R. A., Hobbs, N. T., Huntly, N., Naiman, R. J., Riebsame, W. E., Turner, M. G., and Valone, T. J. (2000). Ecological principles and guidelines for managing the use of land. Ecological Applications 10, 639–670.
Davies, K. W., Boyd, C. S., Beck, J. L., Bates, J. D., Svejcar, T. J., and Gregg, M. A. (2011). Saving the sagebrush sea, an ecosystem conservation plan for big sagebrush plant communities. Biological Conservation 144, 2573–2584.
| Saving the sagebrush sea, an ecosystem conservation plan for big sagebrush plant communities.Crossref | GoogleScholarGoogle Scholar |
Diaz, S., Lavorel, S., McIntyre, S., Falczuk, V., Casanovess, F., Milchunas, D. G., Skarpe, C., Rusch, G., Sternberg, M., Noy-Mair, I., Landsberg, J., Zhang, W., Clark, H., and Campbell, B. D. (2007). Plant trait responses to grazing – a global synthesis. Global Change Biology 13, 313–341.
| Plant trait responses to grazing – a global synthesis.Crossref | GoogleScholarGoogle Scholar |
Dobkin, D. S., and Sauder, J. D. (2004). ‘Shrub Steppe Landscapes in Jeopardy. Distributions, Abundances, and the Uncertain Future of Birds and Small Mammals in the Intermountain West.’ (High Desert Ecological Research Institute: Bend, OR.)
Ellison, L. (1960). Influence of grazing on plant succession of rangelands. Botanical Review 26, 1–78.
| Influence of grazing on plant succession of rangelands.Crossref | GoogleScholarGoogle Scholar |
Elmore, R. D., and Messmer, T. A. (2006). ‘Livestock Grazing and the Utah Prairie Dog, Implications for Managing the Awapa.’ Berryman Institute Publication No. 24. (Utah State University: Logan, UT.)
Fleischner, T. L. (1994). Ecological costs of livestock grazing in western North America. Conservation Biology 8, 629–644.
| Ecological costs of livestock grazing in western North America.Crossref | GoogleScholarGoogle Scholar |
Franklin, J. F., and Dyrness, C. T. (1973). ‘Natural Vegetation of Oregon and Washington.’ USDA Forest Service. Pacific NW Forest and Range Experimental Station General Technical Report PNW-8. (USDA Forestry Service: Portland, OR.)
Gahr, M. L. (1993). Natural history, burrow habit and use, and home range of the pygmy rabbit (Brachlylagus idahoensis) at Sagebrush Flat, Washington. MS Thesis, University of Washington, Seattle, WA, USA.
Green, J. S., and Flinders, J. T. (1980). Brachylagus idahoensis. Mammalian Species 125, 1–4.
| Brachylagus idahoensis.Crossref | GoogleScholarGoogle Scholar |
Griffith, B., and Youtie, B. A. (1988). Two devices for estimating foliage density and deer hiding cover. Wildlife Society Bulletin 16, 206–210.
Huntly, N. (1991). Herbivores and the dynamics of communities and ecosystems. Annual Review of Ecology and Systematics 22, 477–503.
| Herbivores and the dynamics of communities and ecosystems.Crossref | GoogleScholarGoogle Scholar |
Karmiris, I. E., and Nastis, A. S. (2007). Intensity of livestock grazing in relation to habitat use by brown hares (Lepus europaeus). Journal of Zoology 271, 193–197.
| Intensity of livestock grazing in relation to habitat use by brown hares (Lepus europaeus).Crossref | GoogleScholarGoogle Scholar |
Knick, S. T. (1999). Forum, requiem for a sagebrush ecosystem? Northwest Science 73, 47–51.
Lacey, J., and Taylor, J. E. (2005). ‘Montana Guide to Range Site, Condition and Initial Stocking Rates.’ Montana Coop. Ext. Bull. (Montana State University: Bozeman, MT.)
Laycock, W. A. (1991). Stable states and thresholds of range condition on North American rangelands, a view point. Journal of Range Management 44, 427–433.
| Stable states and thresholds of range condition on North American rangelands, a view point.Crossref | GoogleScholarGoogle Scholar |
Loft, E. R., Menke, J. W., Kie, J. G., and Bertram, R. C. (1987). Influence of cattle stocking rate on the structural profile of deer hiding cover. The Journal of Wildlife Management 51, 655–664.
| Influence of cattle stocking rate on the structural profile of deer hiding cover.Crossref | GoogleScholarGoogle Scholar |
Loomis, J. B. (2002). ‘Integrated Public Lands Management, Principles and Applications to National Forests, Parks, Wildlife Refuges, and BLM Lands.’ (Columbia University Press: New York.)
Manier, D. J., and Hobbs, N. T. (2007). Large herbivores in Sagebrush Steppe ecosystems: livestock and wild ungulates influence structure and function. Oecologia 152, 739–750.
| Large herbivores in Sagebrush Steppe ecosystems: livestock and wild ungulates influence structure and function.Crossref | GoogleScholarGoogle Scholar | 17375334PubMed |
Miller, R. F., Knick, Pyke, D. A., Minke, C. W., Hanser, S. E., Wisdom, M. J., and Hilde, A. L. (2011). Characteristics of sagebrush habitats and limitations to long-term conservation. In: ‘Studies in Avian Biology No. 38’. (University of California Press: Berkeley, CA.)
Ngugi, K. R., Powell, J., Hinds, F. C., and Olson, R. A. (1992). Range animal diet composition in south-central Wyoming. Journal of Range Management 45, 542–545.
| Range animal diet composition in south-central Wyoming.Crossref | GoogleScholarGoogle Scholar |
Price, A. J., and Rachlow, J. L. (2011). Development of an index of abundance for pygmy rabbit populations. The Journal of Wildlife Management 75, 929–937.
| Development of an index of abundance for pygmy rabbit populations.Crossref | GoogleScholarGoogle Scholar |
Price, A. J., Estes-Zumpf, W., and Rachlow, J. (2010). Survival of juvenile pygmy rabbits. The Journal of Wildlife Management 74, 43–47.
| Survival of juvenile pygmy rabbits.Crossref | GoogleScholarGoogle Scholar |
Rauscher, R. L. (1997). ‘Status and Distribution of the Pygmy Rabbit in Montana, Final Report.’ (Montana Department of Fish, Wildlife and Parks: Bozeman, MO.)
Sanchez, D. M., Rachlow, J. L., Robinson, A. P., and Johnson, T. R. (2009). Survey indicators for pygmy rabbits, temporal trends of burrow systems and pellets. Western North American Naturalist 69, 426–436.
| Survey indicators for pygmy rabbits, temporal trends of burrow systems and pellets.Crossref | GoogleScholarGoogle Scholar |
Sanderson, M. A. (2002). ‘Environmental Impacts of Livestock on US Grazing Lands.’ Council for Agricultural Science and Technology, Issue Paper No. 22. (CAST: Ames, IA.)
SAS (2008). ‘SAS User’s Guide, Statistics.’ (SAS Institute, Inc.: Cary, NC.)
Shipley, L. A., Davis, E. M., Felicetti, L. A., McLean, S., and Forbey, J. S. (2012). Mechanisms for eliminating monoterpenes of sagebrush by specialist and generalist rabbits. Journal of Chemical Ecology 38, 1178–1189.
| Mechanisms for eliminating monoterpenes of sagebrush by specialist and generalist rabbits.Crossref | GoogleScholarGoogle Scholar | 23053918PubMed |
Siegel Thines, N. J., Shipley, L. A., and Sayler, R. D. (2004). Effects of cattle grazing on ecology and habitat of Columbia Basin pygmy rabbits (Brachylagus idahoensis). Biological Conservation 119, 525–534.
| Effects of cattle grazing on ecology and habitat of Columbia Basin pygmy rabbits (Brachylagus idahoensis).Crossref | GoogleScholarGoogle Scholar |
Skovlin, J. M., Edgerton, P. J., and McConnell, B. R. (1983). Elk use of winter range as affected by cattle grazing, fertilizing, and burning in south-eastern Washington. Journal of Range Management 36, 184–189.
| Elk use of winter range as affected by cattle grazing, fertilizing, and burning in south-eastern Washington.Crossref | GoogleScholarGoogle Scholar |
Swihart, R. K., Lusk, J. J., Duchamp, J. E., Rizkalla, C. E., and Moore, J. E. (2006). The roles of landscape context, niche breadth, and range boundaries in predicting species responses to habitat alteration. Diversity & Distributions 12, 277–287.
| The roles of landscape context, niche breadth, and range boundaries in predicting species responses to habitat alteration.Crossref | GoogleScholarGoogle Scholar |
Taylor, W. P., Vorhines, C. T., and Lister, P. B. (1935). The relation of jack rabbits to grazing in southern Arizona. Journal of Forestry 33, 240–498.
Torre, I., Diaz, M., Martinez-Padilla, J., Bonal, R., Vinuela, J., and Fargallo, J. A. (2007). Cattle grazing, raptor abundance and small mammal communities in Mediterranean grasslands. Basic and Applied Ecology 8, 565–575.
| Cattle grazing, raptor abundance and small mammal communities in Mediterranean grasslands.Crossref | GoogleScholarGoogle Scholar |
United States Fish and Wildlife Service (2003). Endangered and threatened wildlife and plants; final rule to list the Columbia basin distinct population segment of the pygmy rabbits (Brachylagus idahoensis) as endangered. Federal Register 68, 10388–10409.
United States Fish and Wildlife Service (2010). Endangered and threatened wildlife and plants; 12-month finding to on petition to list the pygmy rabbit as endangered or threatened. Federal Register 75, 60515–60561.
Veblen, K. E., and Young, T. P. (2010). Contrasting effects of cattle and wildlife on the vegetation development of a savanna landscape mosaic. Journal of Ecology 98, 993–1001.
| Contrasting effects of cattle and wildlife on the vegetation development of a savanna landscape mosaic.Crossref | GoogleScholarGoogle Scholar |
Wallis De Vries, M. F., Parkinson, A. E., Dulphy, P., Sayer, M., and Diana, E. (2007). Effects of livestock breed and grazing intensity on biodiversity and production in grazing systems. 4. Effects on animal diversity. Grass and Forage Science 62, 185–197.
| Effects of livestock breed and grazing intensity on biodiversity and production in grazing systems. 4. Effects on animal diversity.Crossref | GoogleScholarGoogle Scholar |
Western U. S. Climate Historical Summaries (2011). Climatological data summaries. Available at: www.wrcc.dri.edu/Climsum.html (accessed 7 February 2014).
Woods, B. A. (2012). The pygmy rabbit, connections between predation risk, habitat structure, and fire dynamics in sagebrush steppe. MS Thesis, University of Idaho, Moscow, Idaho, USA.
Yeo, J. J. (2005). Effects of grazing exclusions on rangeland vegetation and soils, east central Idaho. Western North American Naturalist 65, 91–102.
