• Publications
  • Influence
Effects of bison grazing, fire, and topography on floristic diversity in tallgrass prairie.
Grazed and ungrazed sites subjected to different fire frequencies were sampled on the Konza Prairie Research Natural Area in northeast Kansas after 4 years of bison grazing (1987-1991). The objectiveExpand
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Grazing management effects on plant species diversity in tallgrass prairie
Abstract A 6-year study was conducted in tallgrass prairie to assess the effects of grazing management (cattle stocking densities and grazing systems) on plant community composition and diversity.Expand
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Abstract Various grassland bird species have displayed population declines over the past 30 to 40 years, and interest in explaining possible causes for the declines has prompted numerous studies.Expand
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Comparative Ecology of Native and Introduced Ungulates
The defining period of coevolution among Great Plains plant and ungulate species occurred during the past 12,000 years (Mack and Thompson 1982, Axelrod 1985). In the late Pleistocene and earlyExpand
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Digital Photography: Reduced Investigator Variation in Visual Obstruction Measurements for Southern Tallgrass Prairie
Abstract Landscapes with structural heterogeneity or patchiness can support diverse and stable wildlife populations. Visual obstruction methods (i.e., Robel pole and Nudd's coverboard) are common andExpand
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Competitive abilities of native grasses and non-native (Bothriochloa spp.) grasses
Old World Bluestems (OWB), introduced from Europe and Asia in the 1920s, recently have begun to raise concerns in the Great Plains. Despite suggestion in the late 1950s that OWB were weedy andExpand
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Comparative Morphology of Caucasian Old World Bluestem and Native Grasses
Caucasian old world bluestem (OWB) [Bothrichloa bladhii (Retz) S.T. Blake] has been widely introduced in the southern and central Great Plains as a perennial warm-season grass for forage and soilExpand
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Herbicide Effects on Established Yellow Old World Bluestem (Bothriochloa ischaemum)1
Nine herbicides were tested in a field trial during 2001 and 2002 for the ability to suppress growth of established plants of yellow old world bluestem (OWB) that had invaded native vegetation inExpand
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Invasive warm-season grasses reduce mycorrhizal root colonization and biomass production of native prairie grasses
Soil organisms play important roles in regulating ecosystem-level processes and the association of arbuscular mycorrhizal (AM) fungi with a plant species can be a central force shaping plant species’Expand
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Suppression of Caucasian Old World Bluestem with Split Application of Herbicides
Caucasian old world bluestem (OWB), seeded for conservation and forage production, has escaped into rangelands in the southern and central Great Plains. Glyphosate, imazapic, imazapyr, imazethapyr,Expand
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