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Grant A. Harris fellowship (2009 recipients)

GRANT A. HARRIS FELLOWSHIP

  • 2009 recipients

     
  • Lauren Kolb
    Lauren Kolb, University of Maine, Orono
    Alternative weed management strategies for organic cereals: enhanced crop-weed interface and physical weed control

    There are two innovative and opposing strategies to improve weed management in cereals grown with minimal or no herbicide inputs:

    1. Enhancing crop competition, achieved by increasing plant populations and sowing in a more uniform pattern
    2. Enhancing physical weed control, achieved by sowing in wider rows than usual to permit inter-row with sweeps (i.e., growing row crops)  

    By measuring crop canopy development over the growing season, Lauren hopes to characterize how the dynamics of leaf area index (LAI) vary between planting strategies and determine how this correlates to weed suppression.

  • Keir Soderberg

    Keir Soderberg, University of Virginia

    Fog, aerosols, and nutrient cycling in the Namib desert

    The Namib Desert on the Southwestern coast of Africa is hyper-arid in terms of rainfall but experiences frequent coastal fog events.  The fog has been suggested to provide sufficient water to certain plants which are endemic to the Namib, some of which occur only in the fog zone (up to 60 km inland).  The G.A. Harris fellowship will be used to set up five fog monitoring stations along a climate gradient in the central Namib utilizing leaf wetness, air temperature and relative humidity measurements along with solar radiation and soil parameters (moisture, temperature, and electrical conductivity).  Stable isotope analysis of samples will also be used to help quantify the amounts of fog, groundwater, and soil water that plants utilize.

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  • Lynette Laffea
    Lynette Laffea, University of Colorado
    Measuring carbon sequestration processes in subalpine forest using wireless sensor arrays

    Scale matters in modeling soil respiration rates.  This study deploys a suite of soil respiration and environmental sensors at the Niwot Ridge AmeriFlux research site to explore at what scales (temporal and spatial) drivers of soil respiration affect the respiratory flux of CO2 from the forest floor.  This project will test our capabilities to measure soil environmental dynamics across small spatial scales and at high temporal frequencies.  We will develop new strategies for sensor deployment and the use of wireless technology to sustain high-frequency data collection and archiving in a remote location.

  • Honorable mentions
    Sara Baguskas, UC Santa Babara

    Ecological interactions between epiphytic macrolichen (Ramalina mensiesii) and fog on Santa Cruz Island, California

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    Justin Bechnell, University of Minnesota

    Soil moisture and carbon uptake in restored tropical dry forests

    Robert Keefe, University of Idaho

    Model-based optimization of seed germination timing

     Toni Smith, Boise State University

    Spatiotemporal variations in soil water and their effects on carbon storage and cycling in a semi-arid foothills watershed

    James Parejko, Washington State University

    Determining the ecology and biogeography of phenazine-producing flourescent Pseudomonas spp. in the wheat rhizosphere

    Jongyun Kim, University of Georgia

    Modeling water and fertilizer use of greenhouse crops for efficient irrigation

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