Search Results - "Augustine, D J"

Effects of Migratory Grazers on Spatial Heterogeneity of Soil Nitrogen Properties in a Grassland Ecosystem by Augustine, David J., Frank, Douglas A.

“…Large herbivores are known to respond to spatial heterogeneity in the distribution of forage resources, but how important herbivores are in creating those…”
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Ungulate effects on the functional species composition of plant communities: herbivore selectivity and plant tolerance by Augustine, D.J. (Syracuse University, Syracuse, NY.), McNaughton, S.J

“…Large mammalian herbivores not only depend on plant communities for their existence but cause major changes in plant community composition and structure. These…”
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Contrasting Effects of Grazing vs Browsing Herbivores Determine Changes in Soil Fertility in an East African Savanna by Coetsee, C., Wigley, B. J., Sankaran, M., Ratnam, J., Augustine, D. J.

“…We used a long-term herbivore removal experiment where paired exclosure–open treatments were established at the Mpala Research Centre, Laikipia, Kenya, in 1999…”
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Effects of white-tailed deer on populations of an understory forb in fragmented deciduous forests by Augustine, David J., Frelich, Lee E.

“…The effects of grazing by white-tailed deer (Odocoileus virginianus) on populations of Trillium spp. were examined in remnant, old-growth patches of the highly…”
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Long-Term, Livestock-Mediated Redistribution of Nitrogen and Phosphorus in an East African Savanna by Augustine, David J.

“…1. The effect of livestock on African rangelands has been a major focus of recent research, but little attention has been paid to the way livestock affects the…”
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Regulation of shrub dynamics by native browsing ungulates on East African rangeland by Augustine, D.J, McNaughton, S.J

“…1. Herbivores, edaphic features and fire are primary factors regulating the balance between woody and herbaceous vegetation in savannas. Many observational…”
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Predictors of white-tailed deer grazing intensity in fragmented deciduous forests by Augustine, D.J. (Syracuse University, Syracuse, NY.), Jordan, P.A

“…White-tailed deer (Odocoileus virginianus) can cause major changes in the composition and structure of forest communities by browsing shrubs and tree seedlings…”
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Feedbacks between Soil Nutrients and Large Herbivores in a Managed Savanna Ecosystem by Augustine, David J., McNaughton, Samuel J., Frank, Douglas A.

“…Small-scale fertilization experiments have shown that soil nutrients limit plant productivity in many semiarid grasslands and savannas, but linkages among…”
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Modelling Chlamydia-Koala Interactions: Coexistence, Population Dynamics and Conservation Implications by Augustine, David J.

“…1. Considerable research has been conducted on koala Phascolarctos cinereus population dynamics and the epidemiology of Chlamydia psittaci infection in koalas,…”
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Interactions between frequency–dependent and vertical transmission in host–parasite systems by Altizer, Sonia M., Augustine, David J.

“…We investigate host—pathogen dynamics and conditions for coexistence in two models incorporating frequency–dependent horizontal transmission in conjunction…”
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Spatial heterogeneity in the herbaceous layer of a semi-arid savanna ecosystem by Augustine, D.J

“…Despite increasing recognition of the role spatial pattern can play in ecosystem function, few studies have quantified spatial heterogeneity in savanna…”
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INFLUENCE OF CATTLE MANAGEMENT ON HABITAT SELECTION BY IMPALA ON CENTRAL KENYAN RANGELAND by AUGUSTINE, DAVID J

“…In sub-Saharan Africa, the widespread practice of corralling livestock overnight in thorn-scrub “bomas” creates nutrient-enriched patches within rangelands…”
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Defining deer overabundance and threats to forest communities: From individual plants to landscape structure by Augustine, David J., Decalesta, David

“…Changes in habitat and reduction in predation and hunting pressure are two primary causes of high-density populations of white-tailed deer (Odocoileus…”
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Large herbivores suppress decomposer abundance in a semiarid grazing ecosystem by Sankaran, Mahesh, Augustine, David J.

“…Ecosystem-level studies of producer-decomposer interactions have focused primarily on plant production and soil texture as regulators of decomposer abundance…”
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Cattle Grazing Distribution Patterns Related to Topography across Diverse Rangeland Ecosystems of North America by Raynor, E.J., Gersie, S.P., Stephenson, M.B., Clark, P.E., Spiegal, S.A., Boughton, R.K., Bailey, D.W., Cibils, A., Smith, B.W., Derner, J.D., Estell, R.E., Nielson, R.M., Augustine, D.J.

“…Livestock distribution in extensive rangelands of North America can present management challenges to land managers. Understanding the role of topography on…”
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Evaluation of APEX modifications to simulate forage production for grazing management decision-support in the Western US Great Plains by Cheng, G., Harmel, R.D., Ma, L., Derner, J.D., Augustine, D.J., Bartling, P.N.S., Fang, Q.X., Williams, J.R., Zilverberg, C.J., Boone, R.B., Hoover, D., Yu, Q.

“…Understanding how grazing management decisions influence the productivity and composition of rangeland plant communities is essential for the development of…”
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Competition and facilitation between a native and a domestic herbivore: trade-offs between forage quantity and quality by Augustine, D J, Springer, T L

“…Potential competition between native and domestic herbivores is a majoi consideration influencing the management and conservation of native herbivores in…”
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Validation of DNA metabarcoding of fecal samples using cattle fed known rations by Scasta, J.D., Jorns, T., Derner, J.D., Lake, S., Augustine, D.J., Windh, J.L., Smith, T.L.

“…•Diets of free-roaming animals have been persistently difficult to quantify.•Fecal DNA (fDNA) metabarcoding is an emerging diet quantification technology.•A…”
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Response of native ungulates to drought in semi-arid Kenyan rangeland by Augustine, David J

“…The distribution and abundance of native ungulates were measured on commercially managed, semi-arid rangeland in central Kenya over a 3-year period that…”
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Evaluating strategies for sustainable intensification of US agriculture through the Long-Term Agroecosystem Research network by Spiegal, S, Bestelmeyer, B T, Archer, D W, Augustine, D J, Boughton, E H, Boughton, R K, Cavigelli, M A, Clark, P E, Derner, J D, Duncan, E W, Hapeman, C J, Harmel, R D, Heilman, P, Holly, M A, Huggins, D R, King, K, Kleinman, P J A, Liebig, M A, Locke, M A, McCarty, G W, Millar, N, Mirsky, S B, Moorman, T B, Pierson, F B, Rigby, J R, Robertson, G P, Steiner, J L, Strickland, T C, Swain, H M, Wienhold, B J, Wulfhorst, J D, Yost, M A, Walthall, C L

“…Sustainable intensification is an emerging model for agriculture designed to reconcile accelerating global demand for agricultural products with long-term…”
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