Carol Kendall (scientist)

Carol Kendall is a hydrologist known for her research tracking nutrients and contaminants in aquatic ecosystems using isotopic tracers.

Not to be confused with Carol Kendall the writer, or Carroll Kendall the hockey player.
Carol Kendall
Alma materUniversity of Maryland at College Park
Scientific career
ThesisImpact of isotopic heterogeneity in shallow systems on modeling of stormflow generation (1993)
Doctoral advisorPhil Candela

Education and career

From the University of California, Riverside, Kendall earned a B.S. in geology (1973) and a masters in geology (1976).[1][2] Following her masters she took a position as a geochemist at California Institute of Technology where she remained until 1979. From 1980 until 1990, Kendall was a research hydrologist at the United States Geological Survey in Reston, Virginia. While working full-time,[3] she earned a Ph.D. from the University of Maryland, College Park.[4] Starting in 1990, Kendall was the project lead for the National Research Program's Isotope Tracers Project within the United States Geological Survey.[1]

Research

Kendall is known for her research combining multiple stable isotopes to track nutrients through ecosystems. Her early research optimized methods to convert water into hydrogen for isotopic analysis.[5] She has worked in multiple ecosystems, including the San Joaquin River,[6] the Sacramento River,[7] and in San Francisco Bay.[8] Her large-scale survey of oxygen-18 and deuterium in water samples collected from rivers across the United States serves as a proxy for modern precipitation.[9] Her research into the carbon and nitrogen isotopes in particulate material provided a baseline for research into food webs, nutrient transport research,[10] and global patterns of nitrogen in soil and plants.[11] Kendall's research has also used isotope fractionation to track the flow of carbon from streams to the atmosphere[12] and to differentiate between sources of nitrogen.[13]

Selected publications
  • Kendall, Carol (1 January 1998). "Tracing Nitrogen Sources and Cycling in Catchments". Isotope Tracers in Catchment Hydrology: 519–576. doi:10.1016/B978-0-444-81546-0.50023-9. ISBN 9780444815460.
  • Kendall, Carol and J. J. McDonnell, Editors (1998). "Isotope Tracers in Catchment Hydrology", Elsevier Science Publishers, 816p, ISBN 9780080929156[14]
  • McCutchan, James H.; Lewis, William M.; Kendall, Carol; McGrath, Claire C. (2003). "Variation in trophic shift for stable isotope ratios of carbon, nitrogen, and sulfur". Oikos. 102 (2): 378–390. doi:10.1034/j.1600-0706.2003.12098.x. ISSN 1600-0706.
  • Coplen, Tyler B.; Kendall, Carol; Hopple, Jessica (March 1983). "Comparison of stable isotope reference samples". Nature. 302 (5905): 236–238. Bibcode:1983Natur.302..236C. doi:10.1038/302236a0. S2CID 4371648.
  • Kendall, Carol; Silva, Steven R.; Kelly, Valerie J. (2001). "Carbon and nitrogen isotopic compositions of particulate organic matter in four large river systems across the United States". Hydrological Processes. 15 (7): 1301–1346. Bibcode:2001HyPr...15.1301K. doi:10.1002/hyp.216. ISSN 1099-1085. S2CID 129144544.

Awards and honors
  • Meritorious Service Awards, United States Geological Survey (1994, 2002)[1]
  • Fellow, American Geophysical Union (2010)[15]
  • Distinguished alumni, University of Maryland (2011)[3]
  • Walter Langbein Lecture, American Geophysical Union (2014)[16]

References
  1. "Carol Kendall". www.usgs.gov. Retrieved 2021-08-23.
  2. Kendall, Carol (1976). Petrology and stable isotope geochemistry of three wells in the Buttes Area of the Salton Sea geothermal field, Imperial Valley, California, U.S.A. (Thesis). Riverside, Calif. OCLC 4428861.
  3. "Distinguished Alumni | Department of Geology | University of Maryland". www.geol.umd.edu. Retrieved 2021-08-23.
  4. Kendall, Carol (1993). Impact of isotopic heterogeneity in shallow systems on modeling of stormflow generation (Thesis). OCLC 30104048.
  5. Kendall, Carol.; Coplen, Tyler B. (1985-06-01). "Multi-sample conversion of water to hydrogen by zinc for stable isotope determination". Analytical Chemistry. 57 (7): 1437–1440. doi:10.1021/ac00284a058. ISSN 0003-2700.
  6. Pellerin, Brian A.; Downing, Bryan D.; Kendall, Carol; Dahlgren, Randy A.; Kraus, Tamara E. C.; Saraceno, Johnfranco; Spencer, Robert G. M.; Bergamaschi, Brian A. (2009). "Assessing the sources and magnitude of diurnal nitrate variability in the San Joaquin River (California) with an in situ optical nitrate sensor and dual nitrate isotopes". Freshwater Biology. 54 (2): 376–387. doi:10.1111/j.1365-2427.2008.02111.x.
  7. Carol Kendall, Megan B. Young (2015), "Isotope data, chemical data, isotope techniques, nitrate, ammonium, Sacramento river, miner slough, steamboat slough, organic matter, yolo slough, cache slough, phytoplankton, San Francisco Estuary, isotopic composition", Tracing nutrient and organic matter sources and biogeochemical processes in the Sacramento River and Northern Delta: proof of concept using stable isotope data, U.S. Geological Survey, doi:10.5066/f7qj7fcm, retrieved 2021-08-24
  8. Wankel, Scott D.; Kendall, Carol; Francis, Chris A.; Paytan, Adina (2006). "Nitrogen sources and cycling in the San Francisco Bay Estuary: A nitrate dual isotopic composition approach". Limnology and Oceanography. 51 (4): 1654–1664. Bibcode:2006LimOc..51.1654W. doi:10.4319/lo.2006.51.4.1654. ISSN 1939-5590. S2CID 2670883.
  9. Kendall, Carol; Coplen, Tyler B. (2001). "Distribution of oxygen-18 and deuterium in river waters across the United States". Hydrological Processes. 15 (7): 1363–1393. Bibcode:2001HyPr...15.1363K. doi:10.1002/hyp.217. ISSN 0885-6087. S2CID 27744095.
  10. Kendall, Carol; Silva, Steven R.; Kelly, Valerie J. (2001). "Carbon and nitrogen isotopic compositions of particulate organic matter in four large river systems across the United States". Hydrological Processes. 15 (7): 1301–1346. Bibcode:2001HyPr...15.1301K. doi:10.1002/hyp.216. ISSN 0885-6087. S2CID 129144544.
  11. Amundson, Ronald; Austin, A. T.; Schuur, E. A. G.; Yoo, K.; Matzek, V.; Kendall, C.; Uebersax, A.; Brenner, D.; Baisden, W. T. (2003). "Global patterns of the isotopic composition of soil and plant nitrogen: GLOBAL SOIL AND PLANT N ISOTOPES". Global Biogeochemical Cycles. 17 (1). doi:10.1029/2002GB001903. S2CID 129960646.
  12. Doctor, Daniel H.; Kendall, Carol; Sebestyen, Stephen D.; Shanley, James B.; Ohte, Nobuhito; Boyer, Elizabeth W. (2008-07-01). "Carbon isotope fractionation of dissolved inorganic carbon (DIC) due to outgassing of carbon dioxide from a headwater stream". Hydrological Processes. 22 (14): 2410–2423. Bibcode:2008HyPr...22.2410D. doi:10.1002/hyp.6833. S2CID 27087096.
  13. Burns, Douglas A.; Kendall, Carol (2002). "Analysis of δ 15 N and δ 18 O to differentiate NO 3 − sources in runoff at two watersheds in the Catskill Mountains of New York: DUAL-ISOTOPE ANALYSIS". Water Resources Research. 38 (5): 9–1–9–11. doi:10.1029/2001WR000292. S2CID 128953208.
  14. Isotope Tracers in Catchment Hydrology. Elsevier. 1998. p. 816. ISBN 9780080929156.
  15. "Kendall". Honors Program. Retrieved 21 August 2021.
  16. "Walter Langbein Lecture". www.agu.org. Retrieved 2021-08-23.
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