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Filters Contacts (Less) Belnap, Jayne Beatty, Susan W Bowker, Matthew A Davidson, Diane W Gunes, Aydin Hardie, A M Heal, Kate V Inal, Ali Jayne Belnap Lilly, Allan Mark Eugene Miller Miller, Mark Eugene Phillips, Susan L Reynolds, Richard L Richard L Reynolds Susan W. Beatty View Results as: JSON ATOM CSV

Performance of Bromus tectorum L. in relation to soil properties, water additions, and chemical amendments in calcareous soils of southeastern Utah, USA In drylands of southeastern Utah, USA, the invasive exotic grass Bromus tectorum L. occurs in distinct spatial patterns suggesting soil control of ecosystem susceptibility to invasion. To improve our understanding of these patterns, we examined performance of B. tectorum in relation to additions of water, KCl, MgO, and CaO at seventeen 1600 m2 sites distributed across a calcareous soil gradient in Canyonlands National Park. Water additions resulted in a 57% increase in B. tectorum establishment. Fall establishment was significantly correlated with silt and clay content in wet plots but not in dry plots, suggesting that texture effects on B. tectorum establishment patterns may be greater in wet years than in dry... Categories: Publication; Types: Citation, Journal Citation; Tags: Plant and Soil, invasive species, magnesium, manganese, phosphorus, All tags... potassium, spatial pattern, Fewer tags Evidence for micronutrient limitation of biological soil crusts- Importance to arid-lands restoration Desertification is a global problem, costly to national economies and human societies. Restoration of biological soil crusts (BSCs) may have an important role to play in the reversal of desertification due to their ability to decrease erosion and enhance soil fertility. To determine if there is evidence that lower fertility may hinder BSC recolonization, we investigated the hypothesis that BSC abundance is driven by soil nutrient concentrations. At a regional scale (north and central Colorado Plateau, USA), moss and lichen cover and richness are correlated with a complex water?nutrient availability gradient and have approximately six-fold higher cover and approximately two-fold higher species richness on sandy soils... Categories: Publication; Types: Citation, Journal Citation; Tags: Collema, Ecological Applications, cryptobiotic soils, desertification, lichens, All tags... manganese, micronutrient limitation, mosses, restoration, semi-arid desert, soil crusts and arid-land restoration, soil nutrients, zinc, Fewer tags Phosphorus Efficiency in Sunflower Cultivars and Its Relationships with Phosphorus, Calcium, Iron, Zinc and Manganese Nutrition Phosphorus (P) efficiency (shoot dry weight at low P/shoot dry weight at high P) of a cultivar is the ability to produce a high yield in a soil that is limited in that element for a standard genotype. The large variation in P efficiency of different crops provides opportunities for screening crop species that perform well on low phosphorus soil. To explain the differences in P efficiency of sunflower (Helianthus annuus L.) cultivars a glasshouse pot experiment was conducted by using P-deficient soil [0.5 M sodium bicarbonate (NaHCO3)-extractable P 8.54 mg kg-1] treated with 0 (low P) and 100 mg P kg-1 soil (high P). The relationship between P efficiency and P, calcium (Ca), iron (Fe), zinc (Zn), and manganese (Mn)... Categories: Publication; Types: Citation, Journal Citation; Tags: Journal of Plant Nutrition, P efficiency, Taylor and Francis Ltd, anthocyanin, calcium, All tags... iron, manganese, phosphorus, sunflower, zinc, Fewer tags The Influence of Pedology and Changes in Soil Moisture Status on Manganese Release from Upland Catchments: Soil Core Laboratory Experiments Manganese (Mn) contamination of drinking water may cause aesthetic and human health problems when concentrations exceed 50 and 500 ?g l?1, respectively. In the UK, the majority of Mn-related drinking water supply failures originate from unpolluted upland catchments. The source of Mn is therefore soil, but the exact mechanisms by which it is mobilised into surface waters remain unknown. Elevated Mn concentrations in surface waters have been associated with the rewetting of dried upland soils and with conifer afforestation. We investigated these hypotheses in a laboratory experiment involving the drying and rewetting of intact soil cores (1,900 cm3 volume) of horizons of four representative soil type-land use combinations... Categories: Publication; Types: Citation, Journal Citation; Tags: Drinking water, Intact soil cores, Land use, Manganese, Mobilisation, All tags... Soil horizon, Soil water, Upland catchments, Water, Air, & Soil Pollution, Fewer tags Performance of Bromus tectorum L. in relation to soil properties, water additions, and chemical amendments in calcareous soils of southeastern Utah, USA In drylands of southeastern Utah, USA, the invasive exotic grass Bromus tectorum L. occurs in distinct spatial patterns suggesting soil control of ecosystem susceptibility to invasion. To improve our understanding of these patterns, we examined performance of B. tectorum in relation to additions of water, KCl, MgO, and CaO at seventeen 1600 m2 sites distributed across a calcareous soil gradient in Canyonlands National Park. Water additions resulted in a 57% increase in B. tectorum establishment. Fall establishment was significantly correlated with silt and clay content in wet plots but not in dry plots, suggesting that texture effects on B. tectorum establishment patterns may be greater in wet years than in dry... Categories: Publication; Types: Citation, Journal Citation; Tags: Plant and Soil, invasive species, magnesium, manganese, phosphorus, All tags... potassium, spatial pattern, Fewer tags