John “Jay” Arnone

My research focuses primarily on understanding the effects of global environmental change (a.k.a. “climate change”) on the functioning and structure of terrestrial ecosystems, and deciphering the underlying ecological mechanisms driving the responses. This includes the study of how rising atmospheric CO2, changes in ambient temperature, interannual climate variability (e.g. anomalously warm years or heat waves), reductions in biological diversity, and large periodic disturbances (e.g. wildfire) affect plant physiological processes, plant growth and survival, plant populations and plant communities, as well as ecosystem processes and feedbacks. Although my interests in ecology are broad, I am particularly keen on understanding how belowground processes are impacted by changing ambient environmental conditions (e.g. fine root dynamics, activity of soil fauna, soil hydrology and root biology). I attempt to bridge traditional ecological disciplines and seek out collaboration with scientists from other disciplines to address these wider-ranging ecological questions.

My research group and I also apply our expertise to directly address real-world environmental questions and challenges for clients such as the U.S. Department of the Interior, Southern Nevada Water Authority, Sempra Energy, American Vanadium, Washoe County Air Quality Management, U.S. Bureau of Reclamation, and the Gas Technology Institute.

Douglas Sims

Dr. Douglas B. Sims has been teaching environmental science at CSN since Fall, 2011. Some of the courses he teaches are environmental science, geography, meteorology and climatology. Dr. Sims received his BA in Anthropology from the University of Nevada, Las Vegas and an MS in Water Resources Management (concentration in soil science) from the Geoscience Department of the same university. Dr. Sims later earned a PhD in Environmental Science with a concentration in soil chemistry at Kingston University, London, United Kingdom.

Dr Sims routinely involves his students in field and laboratory research activities. He believes that by involving his students in real science they become excited about a career in this growing field.

His research interest relate to abandoned mining and their impacts on the wider environment including sediments, water, climate, animal, and human effects. He is interested in the greater environment and how climate change posses possible impacts in hyper-arid regions. He has published many articles in regional and international journals on historic mining, climate change and environmental impacts caused by human activities.