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Open Access Publications from the University of California

TER2: Multiscale Multimodal Embedded Sensing of Plant Phenology and Physiology

  • Author(s): Michael Hamilton
  • Eric Graham
  • Deborah Estrin
  • Phil Rundel
  • Michael Allen
  • Bill Kaiser
  • Bill Swenson
  • Michael Wimbrow
  • Michael Taggart
  • Vanessa Rivera Del Rio
  • Eric Yuen
  • et al.

The goal of this integrated and cross-campus project is to sense the environment from the leaf to the landscape level. Aspects of the project include, but are not limited to: (1) NIMS and fixed-camera technologies that allow the real-time and automated observation of plant phenological events: leaf flushes, flowering, herbivore attack, and pollination and flower-visitation events. (2) Embedded micro-sensors that include light sensors sensitive to photosynthetic photon flux (PPF; 400-700 nm wavelength) installed on leaf surfaces indicate leaf- and plant-level responses to changes in light conditions, sap flow sensors that measure the velocity at which the transpiration stream flows by the dissipation of heat within a branch, and micrometeorological sensors that monitor conditions that change the driving force for transpiration and affect water balance on a plant- and landscape-level. (3) Minirhizotron tubes enable the direct measurement of root growth and allow for the estimations of microbial activity in the soil.

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