John Harte (scientist)

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John Harte (born July 8, 1939) is an American ecologist and Professor of the Graduate School in the Energy and Resources Group at the University of California at Berkeley. [1] [2] His work includes investigation into a maximum entropy theory of ecology and long-term experiments on the effects of climate change on alpine ecology. [3]

Contents

Academic career

Harte received his B.A. from Harvard University in 1961 and his Ph.D. in Physics from the University of Wisconsin in 1965. [4] He was an Assistant Professor of Physics at Yale University from 1968-1973. He used his analytic abilities in 1971 to assess the impact of a proposed jetport on the Florida Everglades, [5] the findings of which were instrumental in the rejection of the proposal. [6] Impressed by the impact science could have on policy and conservation, he transitioned into the study of theoretical ecology, and joined the UC Berkeley faculty as an ecologist in the Energy and Resources Group in 1973. [1]

Research and Policy Work

In 1990, Harte started the Warming Meadow experiment, the first realistically simulated global warming field experiment, using overhead radiant heaters. [7] The project has involved many scientists, and continued for nearly 30 years, making it the longest-running global warming field experiment ever undertaken. [7] Located at an elevation of 9,560 feet rise in the Upper East River Valley near the Gothic, Colorado townsite, Warming Meadow was used to study the impact of increased temperatures and earlier snowmelt on the area's subalpine meadows. [8] The project used a linear array of 10 experimental plots that alternated between unheated (control) and heated plots, [9] where the soil and vegetation of the latter were continually heated by an average of 2 degrees Celsius, the temperature change predicted at that time for global warming. [8]

This controlled setup has demonstrated how, over decades, the increased heating of Earth's atmosphere would affect an ecosystem—in this case, a common subalpine meadow. The experiment offered insights into how global warming would significantly affect other ecosystems. The research results on heating a subalpine meadow ecosystem were reported in over 30 published scientific papers, [10] [8] and a dozen doctoral dissertations throughout the decades. The research was also described popularly, such as on Now with Bill Moyers, [11] and in Mother Jones Magazine. [12]

Harte found that spring snowmelt occurred 2-3 weeks earlier in the heated plots. Heated subalpine meadow plots were greatly impacted and started transforming from non-woody flowering plants (forbs) towards more arid sagebrush habitat. [8] Major findings included showing that this resulted in a loss of 25% of the soil carbon, in the form of climate-warming gases, into the atmosphere. This created a feedback loop that increased global warming. [13]

By 2015, published research showed that unheated meadow plots were showing the same effects as heated plots but more slowly—that is, unheated plots were tracking the actual effects of climate change in real time. [8] [14] These results affirmed the realism of the experimental manipulation (ie, heating plots).

Harte has spoken out on the policy implications of his global warming research to the public on numerous occasions, notably in a filmed 2022 presentation to the Central Colorado Humanists. [15] With his wife, Mary Ellen (Mel) Harte, he co-authored the first free online book on climate change and policy in 2009, Cool the Earth, Save the Economy: Solving the Climate Crisis Is EASY. [16] [17]

Harte has also published (e.g., [18] [19] ) on the problem of, and needed solutions to, the unsustainable global growth of human populations.

Honors and awards

He was selected in July 1990 to be one of the first recipients of the Pew Scholar Prize in Conservation and the Environment. [20]

He received a Guggenheim Fellowship in 1993 [21] and the Leo Szilard prize from the American Physical Society in 2001. [22]

Further honors include the Phi Beta Kappa Lectureship, the University of Colorado Distinguished Lectureship, the UC Berkeley Graduate Mentorship Award, a Miller Professorship, and a George Polk Award in investigative journalism. [1]

He was elected Fellow to the:

Selected publications

See also

Related Research Articles

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References

  1. 1 2 3 "John Harte". UC Berkeley Energy and Resources Group. Retrieved October 6, 2022.
  2. ↑ Tobias, Michael Charles. "CLIMATE SHOCK: UC-Berkeley Scientist, Dr. John Harte, Puts the World on Notice". Forbes. Retrieved 2018-04-06.
  3. ↑ Harte, J.; Shaw, R. (1995). "Shifting Dominance Within a Montane Vegetation Community: Results of a Climate-Warming Experiment". Science. 267 (5199): 876–880. Bibcode:1995Sci...267..876H. doi:10.1126/science.267.5199.876. PMID   17813919. S2CID   28004610.
  4. ↑ "John Harte". ESPM UC Berkeley Rausser College of Natural Resources. Retrieved April 4, 2018.
  5. ↑ Harte, John; Socolow, Robert H. (1971). "The Everglades: Wilderness Versus Rampant Land Development in South Florida" (PDF). Boston College Environmental Affairs Law Review. 1 (1): 140–164.
  6. ↑ Kessler, Martin; Teply, Larry (1971). "Jetport: Planning and Politics in the Big Cypress Swamp". University of Miami Law Review. 25 (4): 713–748. Retrieved 13 June 2023.
  7. 1 2 Linh Anh Cat (July 24, 2019). "The End Of The Longest-Running Warming Experiment". Forbes . Retrieved September 12, 2022.
  8. 1 2 3 4 5 Stroh, Tony (2015). "Indicator of a Changing World; The Warming Meadow" (PDF). Science at the Top. Vol. 4, no. Fall. Rocky Mountain Biological Laboratory. Retrieved 14 June 2023.
  9. ↑ de Valpine, Perry; Harte, John (March 2001). "Plant Responses to Experimental Warming in a Montane Meadow". Ecology. 82 (3): 637–648. doi:10.1890/0012-9658(2001)082[0637:PRTEWI]2.0.CO;2. ISSN   0012-9658.
  10. ↑ "Selected Publications – Harte Lab" . Retrieved September 12, 2022.
  11. ↑ "John Harte On Climate Change". Now. September 17, 2004. Retrieved September 12, 2022.
  12. ↑ Duane, Daniel (2004). "Meadow's End". Mother Jones. Retrieved September 12, 2022.
  13. ↑ Fogel, Linda (2004). "Colorado's Warming Meadow". Breakthroughs. Berkeley Rausser College of Natural Resources. Retrieved September 12, 2022.
  14. ↑ Harte, J.; Saleska, S. R.; Levy, C. (2015). "Convergent ecosystem responses to 23-year ambient and manipulated warming link advancing snowmelt and shrub encroachment to transient and long-term climate-soil carbon feedback". Global Change Biology. 21 (6): 2349–2356. Bibcode:2015GCBio..21.2349H. doi:10.1111/gcb.12831. PMID   25504893. S2CID   28720264 . Retrieved September 12, 2022.
  15. ↑ "Global Warming - Why the Problem Is Worse Than You Thought ... And the Solution Could Be Simpler". Vimeo. Central Colorado Humanists. 12 June 2022. Retrieved September 12, 2022.
  16. ↑ "Mary Ellen Harte and John Harte | HuffPost". Huffington Post. Retrieved 13 June 2023.
  17. 1 2 "Cool the Earth, Save the Economy: Solving the Climate Crisis Is EASY" . Retrieved September 12, 2022.
  18. ↑ Bradshaw, Corey J. A.; Ehrlich, Paul R.; Beattie, Andrew; Ceballos, Gerardo; Crist, Eileen; Diamond, Joan; Dirzo, Rodolfo; Ehrlich, Anne H.; Harte, John; Harte, Mary Ellen; Pyke, Graham; Raven, Peter H.; Ripple, William J.; Saltré, Frédérik; Turnbull, Christine; Wackernagel, Mathis; Blumstein, Daniel T. (2021). "Underestimating the Challenges of Avoiding a Ghastly Future". Frontiers in Conservation Science. 1. doi: 10.3389/fcosc.2020.615419 .
  19. ↑ Ehrlich, Paul R.; Harte, John (2015). "Biophysical limits, women's rights and the climate encyclical". Nature Climate Change. 5 (10): 904–905. Bibcode:2015NatCC...5..904E. doi:10.1038/nclimate2795 . Retrieved September 12, 2022.
  20. ↑ "John Harte, Ph.D." The Pew Charitable Trusts. Retrieved 13 June 2023.
  21. ↑ "John Harte". John Simon Guggenheim Memorial Foundation... Retrieved 13 June 2023.
  22. ↑ "2001 Leo Szilard Lectureship Award Recipient". American Physical Society. Retrieved April 4, 2018.
  23. ↑ "APS Fellow Archive". American Physical Society. Retrieved 27 September 2020.
  24. ↑ "Academy Fellows". California Academy of Sciences. Retrieved February 4, 2023.
  25. ↑ Yang, Sarah (24 November 2014). "Four UC Berkeley faculty named AAAS fellows". Berkeley News.
  26. ↑ Zambon, Kat (24 November 2014). "New AAAS Fellows Recognized for Their Contributions to Advancing Science". American Association for the Advancement of Science (AAAS). Retrieved 13 June 2023.
  27. ↑ Gentes, Zoe (April 3, 2019). "Ecological Society of America announces 2019 Fellows – The Ecological Society of America". Ecological Society of America (ESA). Retrieved 13 June 2023.
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