1. Center for Embedded Networked Sensing, University of California, Los Angeles, CA 90095, USA;
2. Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA;
3. Center for Conservation Biology and Department of Plant Pathology and Microbiology, University of California, Riverside, CA 92521, USA;
4. School of Engineering, University of California, Merced, CA 95344, USA