We thank Khalid Kadir and Sarah Brownell (University of California, Berkeley, CA), Rick Danielson (BioVir Laboratories, Inc., Benicia, CA), and Scott Meschke (University of Washington, Seattle, WA) for help with elaboration of field methods and research ideas; Patricio Bueno, Junior Mina Estupiñan, Sangam Tiwari, and Owen Solberg for assisting with processing water samples; Geovanny Hurtado, Maritza Renteria, Deni David Tenorio, Chelo Ortiz, and Melecio Quintero for helping to collect water samples; and Karina Ponce, William Cevallos, Sarah Bates, and Laura McLaughlin for providing considerable logistical and technical support in the field.
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