Filters: Tags: Springer Netherlands (X) > partyWithName: Belnap, Jayne (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Citation (5) Types Citation (5) Journal Citation (5) Contacts Barger, Nichole N Beatty, Susan W D?Antonio, Carla Darby, Brian J Firestone, Mary K More... Categories Publication (5) View Results as: JSON ATOM CSV

Impact of biological soil crusts and desert plants on soil microfaunal community composition Carbon and nitrogen are supplied by a variety of sources in the desert food web; both vascular and non-vascular plants and cyanobacteria supply carbon, and cyanobacteria and plant-associated rhizosphere bacteria are sources of biological nitrogen fixation. The objective of this study was to compare the relative influence of vascular plants and biological soil crusts on desert soil nematode and protozoan abundance and community composition. In the first experiment, biological soil crusts were removed by physical trampling. Treatments with crust removed had fewer nematodes and a greater relative ratio of bacterivores to microphytophages than treatments with intact crust. However, protozoa composition was similar with... Categories: Publication; Types: Citation, Journal Citation; Tags: Colorado Plateau, Desert, Islands of fertility, Plant and Soil, Soil fauna, All tags... Soil food webs, Springer Netherlands, Fewer tags Soil amendment effects on the exotic annual grass Bromus tectorum L. and facilitation of its growth by the native perennial grass Hilaria jamesii (Torr.) Benth Greenhouse experiments were undertaken to identify soil factors that curtail growth of the exotic annual grass Bromus tectorum L. (cheatgrass) without significantly inhibiting growth of native perennial grasses (here represented by Hilaria jamesii [Torr.] Benth). We grew B. tectorum and H. jamesii alone (monoculture pots) and together (combination pots) in soil treatments that manipulated levels of soil phosphorus, potassium, and sodium. Hilaria jamesii showed no decline when its aboveground biomass in any of the applied treatments was compared to the control in either the monoculture or combination pots. Monoculture pots of B. tectorum showed a decline in aboveground biomass with the addition of Na2HPO4 and K2HPO4.... Categories: Publication; Types: Citation, Journal Citation; Tags: Plant Ecology, Springer Netherlands, desert, dryland, invasive annual grass, All tags... restoration, salt tolerance, Fewer tags Arbuscular Mycorrhizal Assemblages in Native Plant Roots Change in the Presence of Invasive Exotic Grasses Plant invasions have the potential to significantly alter soil microbial communities, given their often considerable aboveground effects. We examined how plant invasions altered the arbuscular mycorrhizal fungi of native plant roots in a grassland site in California and one in Utah. In the California site, we used experimentally created plant communities composed of exotic (Avena barbata, Bromus hordeaceus) and native (Nassella pulchra, Lupinus bicolor) monocultures and mixtures. In the Utah semi-arid grassland, we took advantage of invasion by Bromus tectorum into long-term plots dominated by either of two native grasses, Hilaria jamesii or Stipa hymenoides. Arbuscular mycorrhizal fungi colonizing roots were characterized... Categories: Publication; Types: Citation, Journal Citation; Tags: Plant and Soil, Springer Netherlands, arbuscular mycorrhizal fungi, exotic annual grasses, grasslands, All tags... native perennial grasses, plant invasion, Fewer tags Impacts of Biological Soil Crust Disturbance and Composition on C and N Loss from Water Erosion In this study, we conducted rainfall simulation experiments in a cool desert ecosystem to examine the role of biological soil crust disturbance and composition on dissolved and sediment C and N losses. We compared runoff and sediment C and N losses from intact late-successional dark cyanolichen crusts (intact) to both trampled dark crusts (trampled) and dark crusts where the top 1 cm of the soil surface was removed (scraped). In a second experiment, we compared C and N losses in runoff and sediments in early-successional light cyanobacterial crusts (light) to that of intact late-successional dark cyanolichen crusts (dark). A relatively high rainfall intensity of approximately 38 mm per 10-min period was used to... Categories: Publication; Types: Citation, Journal Citation; Tags: Biogeochemistry, Canyonlands National Park, Carbon, Colorado Plateau, Rainfall simulation, All tags... Springer Netherlands, biological soil crusts, Fewer tags Effects of water additions, chemical amendments, and plants on in situ measures of nutrient bioavailability in calcareous soils of southeastern Utah, USA We used ion-exchange resin bags to investigate effects of water additions, chemical amendments, and plant presence on in situ measures of nutrient bioavailability in conjunction with a study examining soil controls of ecosystem invasion by the exotic annual grass Bromus tectorum L. At five dryland sites in southeastern Utah, USA, resin bags were buried in experimental plots randomly assigned to combinations of two watering treatments (wet and dry), four chemical-amendment treatments (KCl, MgO, CaO, and no amendment), and four plant treatments (B. tectorum alone, the perennial bunchgrass Stipa hymenoides R. & S. alone, B. tectorum and S. hymenoides together, and no plants). Resin bags were initially buried in September... Categories: Publication; Types: Citation, Journal Citation; Tags: Bromus tectorum, Plant and Soil, Springer Netherlands, Stipa hymenoides, ion-exchange resin bags, All tags... nutrient dynamics, phospho, potassium, Fewer tags