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Filtering by: Committee Member Cohen, Warren B. Remove constraint Committee Member: Cohen, Warren B. Decade 2010-2019 Remove constraint Decade: 2010-2019

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  • Examination of airborne discrete-return lidar in prediction and identification of unique forest attributes

    Creator:
    Wing, Brian M.
    Abstract:
    Airborne discrete-return lidar is an active remote sensing technology capable of obtaining accurate, fine-resolution three-dimensional measurements over large areas. Discrete-return lidar data produce three-dimensional object characterizations in the form of point clouds defined by precise x, y and z coordinates. The data also provide intensity values for each point that...
    Resource Type:
    Dissertation
    Full Text:
    FOREST Brian M. Wing Martin W. Ritchie Kevin Boston Warren B. Cohen Alix Gitelman

  • Vertical structure and aboveground biomass of tropical forests from lidar remote sensing

    Creator:
    Gonçalves, Fabio Guimarães
    Abstract:
    Methods for obtaining accurate, spatially explicit estimates of biomass density in tropical forests are required to reduce uncertainties in the global carbon cycle, and to support international climate agreements and emerging carbon markets. Three-dimensional (3-D) remote sensing techniques sensitive to the vertical structure of vegetation provide a unique opportunity for...
    Resource Type:
    Dissertation
    Full Text:
    rewarding collaboration. I would like to thank Dick Waring and Warren Cohen for agreeing to serve on

  • Lichen communities and caribou habitat in Denali National Park and Preserve, Alaska, USA

    Creator:
    Nelson, Peter R.
    Abstract:
    Lichens play many important roles in subarctic terrestrial ecosystems by fixing nitrogen, colonizing rock and gravel, stabilizing otherwise bare soil, adding significantly to vegetation biodiversity and serving as the primary food for caribou in the winter. In these chapters, I analyzed lichen community and ecological trait structure along environmental gradients,...
    Resource Type:
    Dissertation
    Full Text:
    . ............................................141   8 9 Figure B: Estimated probability of caribou occurrence as a function of elevation