Update regarding the potential impact of the coronavirus/COVID-19 pandemic on IHSS2020.

At this point, our conference is still 5 months away and a lot could change in that time as the situation is continuously evolving. The organizers are monitoring the situation carefully, and at this time we don’t expect any modifications to the schedule of the conference. We will provide another update by late May. Should the current situation not improve requiring the conference to be cancelled, all registration fees will be returned less any charges for credit card processing. Please stay safe and calm during this stressful period. We sincerely hope that the conference will proceed as planned so that we can enjoy a scientifically stimulating meeting among colleagues and friends in a beautiful location.

Important Conference Information


Important Dates

  • IHSS2020 is still accepting abstracts for posters!
  • April 30 – Early bird registration deadline (reduced registration cost).
  • June 16 – Deadline to reserve a room for the conference with YMCA of the Rockies.

Quick Links


Dr. Fernando Rosario-Ortiz & Dr. Ray Hozalski are the organizers of the 2020 IHSS Conference.  Dr. Rosario Ortiz is a professor of environmental engineering at the University of Colorado and Dr. Hozalski is a professor of environmental engineering at the University of Minnesota.
This conference is being organized in collaboration with the International Humic Substances Society.



The conference and lodging will be at YMCA of the Rockies in Estes Park.
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Transportation options are available from Denver International Airport (DEN) and around Estes Park.
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Field Trip

Tour of beautiful Rocky Mountain National Park.
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Choose from rafting, zip-lining, hiking, archery, horseback riding.
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Social events

Outdoor cookout, music, banquet dinner with live music and square dancing.
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Scientific Committee

  • Yiannis Deligiannakis, University of Ioannina
  • William Becker, Hazen and Sawyer
  • Thomas Borch, Colorado State University
  • Deborah Dick, Federal University of Rio Grande do Sul
  • Raymond Hozalski, University of Minnesota
  • Heike Knicker, Instituto de Recursos Naturales y Agrobiolog√≠a de Sevilla
  • Julie Korak, University of Colorado, Boulder
  • Diane McKnight, University of Colorado, Boulder
  • Teodoro Miano, University of Bari Aldo Moro
  • Kathleen Murphy, Chalmers University
  • Fernando Rosario-Ortiz, University of Colorado, Boulder
  • Roger Swift, University of Queensland
  • E. Michael Thurman, University of Colorado, Boulder
  • Jianming Xu, Zhejiang University