I am a Microbiologist in the Studies Section.
I started with the USGS New Mexico Water Science Center in 2003 as a student studying Earth Science with an emphasis on subsurface (groundwater) microbiology. After receiving an MS in Biology in 2009, I worked as a Hydrologic Technician and later, Microbiologist, with the Oregon Water Science Center, Klamath Falls Field Station. In Oregon, I worked primarily on monitoring the frequent cyanobacteria blooms and associated toxins (“HABs”) and environmental parameters in Upper Klamath Lake. In 2018, I transferred to the Wyoming-Montana Water Science Center, and I am now building a microbiology/microbial ecology program and supporting water-quality studies throughout Montana and Wyoming.
Microbiologist, USGS, Dec 2013-present
Hydrologist, USGS, Jan 2010-Dec 2013
Hydrologic Technician, USGS, April 2009-Jan 2010
Graduate Research Assistant, Portland State University, Sept 2005-April 2009
Hydrologic Technician, USGS, Jan 2003-June 2005
Education and Certifications
M.S. Biology, Portland State University, 2009
B.S. Earth and Planetary Sciences (Magna Cum Laude), University of New Mexico, 2005
B.S. Zoology (Summa Cum Laude), Texas State University, 1997
Science and Products
Science and Products
Non-USGS Publications**Caldwell Eldridge, S.L, Wood, T.M., Echols, K.R., and Topping, B.R., 2013, Microcystins, nutrient dynamics, and other environmental factors during blooms of non-microcystin-producing Aphanizomenon flos-aquae in Upper Klamath Lake, Oregon, 2009, Lake and Reservoir Management, 29: 68-81Caldwell, S. Liu, Y. Ferrera, I., Beveridge, T. and Reysenbach, A.-L., 2010, Thermocrinis minervae sp. nov., a hydrogen- and sulfur-oxidizing, thermophilic member of the Aquificales from a Costa Rican terrestrial hot spring, International Journal of Systematic and Evolutionary Microbiology, 60: 338-343Caldwell, S.L., Laidler, J.R., Brewer, E.A., Eberly, J.O., Sandborgh, S.C., and Colwell F.S., 2008, Anaerobic Oxidation of Methane: Mechanisms, Bioenergetics, and the Ecology of Associated Microorganisms, Environmental Science and Technology, 42: 18, 6791-6799
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.