Jennifer Harden Explained

Jennifer Willa Harden
Workplaces:United States Geological Survey
Alma Mater:University of California, Berkeley
Thesis Title:A study of soil development using the geochronology of Merced river deposits, California
Thesis Url:https://www.worldcat.org/oclc/
Thesis Year:1982
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Jennifer Harden is geologist known for her research on soils, particularly tracking changes in soil profiles over time and the role of soil systems in carbon and nitrogen cycling.

Education and career

Harden earned her B.S. (1976), M.S. (1979), and Ph.D. (1982) from the University of California Berkeley.[1] Following her Ph.D. she joined the United States Geological Survey where she became a scientist emeritus in 2013.

Harden was elected a fellow of the American Association for the Advancement of Science in 2011. In 2015, Harden was elected a fellow of the American Geophysical Union who cited her "for fundamental contributions to quantitative understanding of soils in global change and carbon cycling".

Research

Harden's Ph.D. research[2] used different properties of the soil to establish a "profile development index" or "soil development index" which can be used to track changes in soil over millions of years.[3] Harden and others use this to track the age of soils[4] and changing climate conditions.[5] Harden's research has also considered carbon lost from soils in forests[6] and cropland,[7] and the capture of carbon in soil during deglaciation of the Laurentide Ice Sheet.[8] The connections between fire in boreal forests and carbon is another focus of Harden's research.[9] [10] She has examined the impact of burning and permafrost in soils[11] and assessed the level of organic carbon transferred to the atmosphere from soils in Alaskan forests and peatland.[12] With Margaret Torn, Harden co-advised Asmeret Asefaw Berhe in her research on soil erosion which showed that erosion allow soils to store more carbon.[13] [14] Harden has also quantified the amount of carbon and nitrogen that would be released under different future climate scenarios from Gelisols, soils impacted by permafrost.[15] [16] Through collaborative research projects, Harden has quantified the amount of soil organic carbon stored in permafrost[17] and the release of this organic carbon under warming climate conditions.[18]

Selected publications

Awards and honors

Notes and References

  1. Web site: Jennifer Harden, Ph.D.. 16 August 2021.
  2. A study of soil development using the geochronology of Merced river deposits, California. 1982. Jennifer. Harden.
  3. Harden. Jennifer W.. 1982-07-01. A quantitative index of soil development from field descriptions: Examples from a chronosequence in central California. Geoderma. en. 28. 1. 1–28. 10.1016/0016-7061(82)90037-4. 1982Geode..28....1H . 0016-7061.
  4. Harden. Jennifer W.. Taylor. Emily M.. 1983. A Quantitative Comparison of Soil Development in Four Climatic Regimes. Quaternary Research. en. 20. 3. 342–359. 10.1016/0033-5894(83)90017-0. 1983QuRes..20..342H . 129497217 . 0033-5894.
  5. Harden. Jennifer W.. 1990. Soil development on stable landforms and implications for landscape studies. Geomorphology. en. 3. 3–4. 391–398. 10.1016/0169-555X(90)90013-G. 1990Geomo...3..391H .
  6. Goulden. M. L.. Wofsy. S. C.. Harden. J. W.. Trumbore. S. E.. Susan Trumbore . Crill. P. M.. Gower. S. T.. Fries. T.. Daube. B. C.. Fan. S.-M.. Sutton. D. J.. Bazzaz. A.. 1998-01-09. Sensitivity of Boreal Forest Carbon Balance to Soil Thaw. Science. en. 279. 5348. 214–217. 10.1126/science.279.5348.214. 9422691 . 1998Sci...279..214G . 7530001 . 0036-8075.
  7. Harden. J. W.. Sharpe. J. M.. Parton. W. J.. Ojima. D. S.. Fries. T. L.. Huntington. T. G.. Dabney. S. M.. 1999. Dynamic replacement and loss of soil carbon on eroding cropland. Global Biogeochemical Cycles. en. 13. 4. 885–901. 10.1029/1999GB900061. 1999GBioC..13..885H . 1944-9224. free.
  8. Harden. J. W.. Mark. R. K.. Sundquist. E. T.. Stallard. R. F.. 1992-12-18. Dynamics of Soil Carbon During Deglaciation of the Laurentide Ice Sheet. Science. en. 258. 5090. 1921–1924. 10.1126/science.258.5090.1921. 17836185 . 1992Sci...258.1921H . 28220872 . 0036-8075.
  9. Harden. J. W.. Trumbore. S. E.. Stocks. B. J.. Hirsch. A.. Gower. S. T.. O'neill. K. P.. Kasischke. E. S.. 2000. The role of fire in the boreal carbon budget. Global Change Biology. en. 6. S1. 174–184. 10.1046/j.1365-2486.2000.06019.x. 35026928 . 2000GCBio...6S.174H . 86434480 . 1365-2486.
  10. Harden. J. W.. Neff. J. C.. Sandberg. D. V.. Turetsky. M. R.. Ottmar. R.. Gleixner. G.. Fries. T. L.. Manies. K. L.. 2004. Chemistry of burning the forest floor during the FROSTFIRE experimental burn, interior Alaska, 1999. Global Biogeochemical Cycles. en. 18. 3. 10.1029/2003GB002194. 2004GBioC..18.3014H . 18315843 . 1944-9224. free.
  11. Harden. Jennifer W.. Manies. Kristen L.. Turetsky. Merritt R.. Neff. Jason C.. 2006. Effects of wildfire and permafrost on soil organic matter and soil climate in interior Alaska. Global Change Biology. en. 12. 12. 2391–2403. 10.1111/j.1365-2486.2006.01255.x. 2006GCBio..12.2391H . 86632152 . 1365-2486.
  12. Turetsky. Merritt R.. Kane. Evan S.. Harden. Jennifer W.. Ottmar. Roger D.. Manies. Kristen L.. Hoy. Elizabeth. Kasischke. Eric S.. 2011. Recent acceleration of biomass burning and carbon losses in Alaskan forests and peatlands. Nature Geoscience. en. 4. 1. 27–31. 10.1038/ngeo1027. 2011NatGe...4...27T . 1752-0894.
  13. Web site: Preuss. Paul. April 2007. Science@Berkeley Lab: Damaged Land, Buried Carbon. 2021-08-20. www2.lbl.gov.
  14. Berhe. Asmeret Asefaw. Harte. John. Harden. Jennifer W.. Torn. Margaret S.. 2007-04-01. The Significance of the Erosion-induced Terrestrial Carbon Sink. BioScience. en. 57. 4. 337–346. 10.1641/B570408. 54758860 . 1525-3244. free.
  15. Web site: October 25, 2012. Not-so-permanent permafrost: 850 billion tons of carbon stored in frozen Arctic ground could be released. 2021-08-20. ScienceDaily. en.
  16. Harden. Jennifer W.. Koven. Charles D.. Ping. Chien-Lu. Hugelius. Gustaf. David McGuire. A.. Camill. Phillip. Jorgenson. Torre. Kuhry. Peter. Michaelson. Gary J.. O'Donnell. Jonathan A.. Schuur. Edward A. G.. 2012-08-16. Field information links permafrost carbon to physical vulnerabilities of thawing: C AND N VULERABLITIES OF THAWING. Geophysical Research Letters. en. 39. 15. 10.1029/2012GL051958. 15126894 .
  17. Hugelius. G.. Strauss. J.. Zubrzycki. S.. Harden. J. W.. Schuur. E. A. G.. Ping. C.-L.. Schirrmeister. L.. Grosse. G.. Michaelson. G. J.. Koven. C. D.. O'Donnell. J. A.. 2014-12-01. Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps. Biogeosciences. en. 11. 23. 6573–6593. 10.5194/bg-11-6573-2014. 2014BGeo...11.6573H . 14158339 . 1726-4189 . free .
  18. Schuur. E. A. G.. McGuire. A. D.. Schädel. C.. Grosse. G.. Harden. J. W.. Hayes. D. J.. Hugelius. G.. Koven. C. D.. Kuhry. P.. Lawrence. D. M.. Natali. S. M.. April 2015. Climate change and the permafrost carbon feedback. Nature. 520. 7546. 171–179. 10.1038/nature14338. M. R.. Treat. Olefeldt. Vonk. J. E.. Turetsky. K.. Schaefer. V. E.. Romanovsky. D.. C. C.. 25855454 . 2015Natur.520..171S . 4460926 .
  19. Web site: Harden. 16 August 2021. Honors Program.
  20. Web site: Historic Fellows American Association for the Advancement of Science. 16 August 2021. www.aaas.org. en.

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