All posts by Sujith Ravi

AGU Research Spotlight on recent publication

Ravi et al. revisit the idea that plants self-organize to find water by studying the interactions of water, soil, and vegetation in Namibian fairy circles “- Witman, S. (2017),

Witman, S. (2017), Mysterious “fairy circles” continue to enchant scientists, Eos, 98, https://doi.org/10.1029/2017EO071017. Published on 05 April 2017.

Commentary by the JGR Editor Dr. Dork Sahagian, The magic of fairy circles: Built or created? http://onlinelibrary.wiley.com/doi/10.1002/2017JG003855/full

https://eos.org/research-spotlights/mysterious-fairy-circles-continue-to-enchant-scientists

NEW PUBLICATION IN J. Geophys. Res. (AGU)

Ravi, S., L. Wang, K. Kaseke, and I. Buynevich, Ecohydrological interactions within “fairy circles” in the Namib Desert: Revisiting the self-organization hypothesis, Journal of Geophysical Research, 122, doi:10.1002/2016JG003604.  [American Geophysical Union & Wiley, IF: 3.32]

 

 

New publication van Pelt et. al in Geoderma

van Pelt et al. 2017 in Geoderma (Elsevier) examine the particulate matter emissions (air quality impacts) from desert surfaces subjected to different disturbances including fire, grazing, trampling, and tillage.

http://www.sciencedirect.com/science/article/pii/S0016706116304311

van Pelt, S., Baddock, M., T. M. Zobeck, S, Ravi, D’Odorico, and A. Bhattachan (2017), Total vertical sediment flux and PM10 emissions from disturbed Chihuahuan Desert surfaces, Geoderma, http://dx.doi.org/10.​1016/​j.​geoderma.​2017.​01.​031. [Elsevier, IF: 3.31]

Publication in Ecohydrology

Yu et al. in Ecohydrology (2017)  uses a novel process-based modelling framework to investigate the complex dynamics resulting from the introduction of exotic grasses under variable climate. Results indicate that  the system converges towards different steady states, depending on the magnitude of climatic variability.

http://onlinelibrary.wiley.com/doi/10.1002/eco.1742/full

Yu, K., G. S. Okin, S. Ravi, and P. D’Odorico (2016), Potential of grass invasion in desert shrublands to create novel ecosystem states under variable climate, Ecohydrology, DOI: 1002/eco.1742 [Wiley].

Lab presentations @ AGU Meeting 2016

American Geophysical Union Fall meeting, San Francisco, CA, December 2016.

  1. Ravi, S., L. Wang, K.  Kaseke, and I. Buynevich, Ecohydrologic interactions within “fairy circles” in the Namib Desert.
  2. Trifunovic, B., H. Gonzales, and S. Ravi, Impact of biochar amendment on soil hydrological properties.
  3. Wang, L., S. Daryanto, K. Kaseke,  and S. Ravi, Integrating teaching and authentic research in the field and laboratory settings.
  4. Wang, G., J. Li,  S. Ravi, J. Sankey, D. Dukes, H. Gonzales, and S. van Pelt, Post-fire soil nutrient redistribution in northern Chihuahuan Desert.
  5. Dukes, D., SRavi, D. Grandstaff, H. Gonzales, J. Li, J. Sankey, G. Wang, and S. Van Pelt, Quantifying post-fire aeolian sediment transport using rare earth element tracers.
  6. Li, J., and S. Ravi, Soil texture in a coppice dune system: The relative role of aeolian and hydrologic processes.
  7. Gonzales, H., S. Ravi, J, Li and J. Sankey, Aeolian sediment trapping efficiencies of sparse vegetation and its ecohydrological consequences in drylands.
  8. S. Ravi, Convener & Session Chair: American Geophysical Union 2016 fall meeting, Hydrology session: Advances in Ecohydrology of Water-Stressed Environments I & II

 

Field work in New Mexico

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David Dukes (Graduate Student) and Howell Gonzales (Postdoctoral Fellow) with one of their automated field monitoring stations at Sevilleta Wildlife Refuge, NM

  • NSF-funded project (2015-2019)
  • Impact of wildfires on ecosystems functions
  • The applicability of novel techniques – using rare earth element tracers for soil erosion, and LiDAR (Ground-based & Unmanned Aerial Systems) for soil microtopography and vegetation structure – to monitor landscape responses to fires.

 

New Publication in Applied Energy

Colocation opportunities for large solar infrastructures and agriculture in drylands in Applied Energy (Elsevier, Impact Factor: 6.5)

1-s2.0-S0306261915X00262-cov150h

 

http://www.sciencedirect.com/science/article/pii/S0306261915016517

Ravi, S., J. Macknick, D. Lobell, C. Field, K. Ganesan, R. Jain, M. Elchinger, and B. Stoltenberg (2016), Colocation opportunities for large solar infrastructures and agriculture in drylands, Applied Energy, 165: 383-392.

 

 

New Book Chapter

Book chapter:  Environmental Hazards, Risks, and Disasters. Elsevier

Covers hazards and disasters related to the regions of the surface and atmosphere of the Earth where living organisms exist

9780123948472

D’Odorico, P., Ravi, S., 2016. Land Degradation and Environmental Change. In: Shroder, J.F., Sivanpillai, R. (Eds.), Biological and Environmental Hazards, Risks, and Disasters. Elsevier, pp. 219–227.

9780123948472

9780123964717

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