A Professor of Limnology in the Biology Department at the University of Nevada, Reno (USA), Sudeep Chandra serves as Director of the University’s Global Water Center: Solutions for Sustainability, the Ozmen Institute for Global Studies, and is the former Co-Director for the Lake Tahoe Science Advisory Council. He also serves as the Director for the Castle Lake Environmental Research Station, which was founded in 1959; the station is home to the longest running mountain lake science collection in North and South America. Researchers and students at the Station answer important science questions about environmental changes in mountain lakes and their watersheds. In 2012-13, Sudeep served the national science community of the United States by serving as a Director for the Ecosystem Sciences Program at the U. S. National Science Foundation.
Sudeep's research program focuses on the conservation of aquatic ecosystems and the betterment of livelihoods through the development of science-based environment policies. He advocates for cooperative international research that assists people in developing countries. His interest in international research began in 1997 when he participated in the Tahoe-Baikal Institute’s annual environmental exchange program, which brought him to Lake Baikal, Russia. In 2003, he was awarded his 1st international research funding from the Trust for Mutual Understanding and the National Geographic Society to investigate the impacts of mining activities in the Lake Baikal watershed in Russia and Mongolia. This work led to the development of a project funded by the Global Environment Fund and World Bank to use faith-based, economic generation initiatives to protect Mongolian culture and livelihoods during a period of rapid economic development and the transition to democratic governance. Towards that end, University of Nevada Researchers have continued to use scientific information that conserve the world’s largest trout of Mongolia, the Taimen. You can see a movie about their work, Fertile Waters.
From 2008-11, Sudeep and his Nevada students worked on Northeastern Siberian lakes in Russia to of climate change to carbon cycling in lakes. This US National Science Foundation supported project led to the development of a multi university effort to develop the 1st ecological field station in Russian Siberia supported with collaboration by the US government. Support from the North Atlantic Treaty Organization (NATO) provided an opportunity for Sudeep's team to understand how lakes created by irrigation run off may be used for protein and economic production in Uzbekistan.
Whether at home or abroad, Sudeep seeks to expand the knowledge and training efforts to conserve lakes and their watersheds around the globe. Through collaborations with United States Agency for International Development (USAID) Sudeep led Unidos por El Lago Atitan, a project to protect Central America’s largest lake in Guatemala. In an effort to expand the work from Guatemala to other regions of Latin America, Sudeep and colleagues from Guatemala are working with their counterparts from Argentina, Chile, Canada, Uruguay, United States with support from the Inter-American Institute and the National Science Foundation to participate in this endeavor called Sensing the America’s Freshwaters Ecosystem Risk from Climate Change. This approach utilizes sociology, economics, and natural resource sciences to quantify risk across sites and provide management solutions for maintaining resources.
Recently Sudeep and his friend Dr. Zeb Hogan, the host of the globally watched National Geographic show Monster Fish, have expanded their work to tackle issues within the Lower Mekong River which is the freshwater fish basket of Asia. Sixty million people rely on the Lower Mekong River for their livelihoods and food resources. Their Wonders of the Mekong project, focuses on understanding the ecological and social changes in the Mekong River Basin resulting from climate change, deforestation, and dam development. The goals are to uplift decision making by develop knowledge and technology capacities in the Lower Mekong River to guide the future management of the river. Check out their social media posts on Facebook, Instagram, and Youtube under #MekongWonders.
While leading efforts to provide science-based guidance to managing natural resources abroad, Sudeep’s first love of nature is Lake Tahoe. Since 1997, Sudeep has been active in understanding the ecological changes in the lake and cocreating management solutions to protect the 3rd deepest lake in North America. Together with his students, they have used scientific information to create management plans to guide invasive species management and tested novel tools for prevention and control of taxa. For example, they are currently testing the a nonchemical approach developed by a private company for controlling invasive plants with ultra violet light tools or using eDNA to detect invasive clams and crayfish. Their latest work addresses the degradation of the nearshore lake environment and the connections between the watershed and lake clarity. Sudeep believes that no one organization can conserve Lake Tahoe. It is up to collaborations between the private and public sectors along with University knowledge based institutions to maintain the lake’s fragile clarity for future generations.
Sudeep has received awards for his efforts including: American Fisheries Society California-Nevada Chapters Award of Excellence, the Tahoe-Baikal Institute Alumni of the Year, University of Nevada’s College of Agriculture, Biotechnology, and Natural Resources Teacher of the Year, and the Mad Hatter’s Award (his favorite) from the Interdisciplinary Graduate Program in Hydrologic Sciences, which he served as Acting coDirector from 2016-18. In 2022, he received the College of Science’s Mousel-Feltner Award for Excellence in Research and Creativity Activity.
Sudeep loves to engage laypersons and professionals, students, policy makers, and concerned citizens in the importance of using science-based information to protect and restore aquatic resources. He feels like there is much more to give in life, and will continue to work to help his fellow people and the environment in which they inhabit.
- How do human induced, environmental perturbations (e.g., invasive species introductions, cultural eutrophication, water removals and climate change) change the basic function of aquatic lakes and rivers?
- Through connections, collaborations, and partnerships, I share lessons learned from scientific endeavors and cultural connections to policy makers to promote the sustainable management of nature and the positive dimensions of the human spirit.
- To work towards a healthy and just society where all individuals and their communities can live in harmony with each other and nature.
- BIOL 472/ 672
- Ph.D., University of California, Davis, 2003
- B.S., University of California, Davis, 1996
- Nava V, S Chandra, et al. 2023. Plastic debris in lakes and reservoirs. Nature. 619 317-322.
- Noble PJ, C Seitz*, SS Lee, KM Manoylov and S Chandra. 2023. Characterization of algal community composition and structure from the nearshore environment, Lake Tahoe (United States). Front. Ecol. Evol. 10:1053499.
- Arsenault, ER*, JH Thorp, MJ Polito, M Minder, WK Dodds, & F Tromboni*, l Maasri, M Pyron, A Otgonganbat, S Altangerel, S Chandra, B Mendsaikhan, R Shields, C Artz, H Bennadji. 2022. Intercontinental analysis of temperate steppe stream food webs reveals consistent autochthonous support of fishes. Ecology Letters, 25, 2624–2636.
- Shuman J, J Balch, R Barnes, P Higuera , C Roos, DW Schwilk, E Stavros, T Banerjee, M Bela, J Bendix, S Bertolino, S Bililign, K Bladon, P Brando, R Breidenthal, B Braum, D Calhoun, L Carvalho, M Cattau, K Cawley, S Chandra, et al. 2022. Reimagine fire science for the anthropocene. PNAS Nexus, 1(3) 115.
- Campbell, T, PB Ngor, B Chan, JC Eschenroeder, E Everest*, S Chandra, S Chea, K Pin*, S Chhuoy*, S Chhorn*, S Soem, M Sup, C Phen, H Sreynov, T Somony, C Chhut, Z Hogan. 2022. Dispersal and Survival of Captive-Reared Threatened Fishes in a Tonle Sap Lake Reserve. Water 14 (19), 2995.
- Chhuoy, S*, ZS Hogan, S Chandra, P Chheng, B Touch, K Utsugi, PB Ngor, 2022. Daily otolith ring validation, age composition, and origin of the endangered striped catfish in the Mekong. Global Ecology and Conservation 33, e0195312022.
- Tromboni, F*, ER Hotchkiss, AE Schechner,* WK Dodds, SR Poulson, and S Chandra. 2022. High rates of daytime river metabolism are an underestimated component of carbon cycling. Communications Earth & Environment 3 (1), 270.
- Scordo F, S Sadro, J Culpepper, C Seitz, and S Chandra. 2021. Wildfire Smoke Effects on Lake-Habitat Specific Metabolism: Toward a Conceptual Understanding. Geophysical Research Letters, 49: 7.
- Chandra, S., E.K. Suenaga, F. Scordo, and T.A. Daniel. 2022. Mountain Lake Biology, Chemistry, Physics, and Climate Data since 1959 at Castle Lake, ver 1. Environmental Data Initiative. (Accessed 2022-04-05).
- Scordo F*, N Lottig, JE Fiorenza, J Culpepper*, J Simmons*, C Seitz*, EM Krynak*, E Suenaga, S Chandra. 2021. Hydroclimate variability affects habitat-specific (open water and littoral) lake metabolism. Water Resources Research, 57.
- Lottig N, JS Phillips, RD Batt, F Scordo*, TJ Williamson, SR Carpenter, S Chandra, P Hanson, CT Soloman, MJ Vannie, J Zwart. 2021. Estimating pelagic primary production in lakes: Comparison of 14C incubation and free-water O2 approaches. Limnology and Oceanography Methods.
- Lottig NR, S Chandra, EH Stanley, M Vanni, F Scordo*, and W Tanner. 2021. Pelagic, epilimnetic production estimates in Sparkling, Trout (Wisconsin), Acton (Ohio), and Castle (California) Lakes (USA) calculated using 14C and free-water O2 metabolism methods, 2007 - 2017 ver 1. Environmental Data Initiative.
- Galland L*, J Simmons*, J Jahner*, AR Lazuriaga-Neira, MR Sloat, S Chandra, Z Hogan, OP Jenson, TR Parchman. 2021. Hierarchical genetic structure and implications for conservation of the world’s largest salmonid, Hucho taimen. Nature Scientific Reports. 11:20508.
- Jerde C, AR Mahon, T Campbell, ME McElroy, K Pin*, JN Childress, MN Armstrong, JR Zehnpfennig, S Kelson*, AA Koning* et al. 2021. Genetic Reference Libraries Sufficient for Environmental DNA Metabarcoding of Mekong River Basin Fish? Water 13, x.
- Schechner A*, W Dodds, F Tromboni, S Chandra, and A Maasri. 2021. How do methodological choices influence estimation of river metabolism? Limnology and Oceanography Methods. 19(9).
- Chhuoy S*, Z Hogan, S Chandra. P Chheng, B Touch, K Utsugi, PB Ngor. 2021. Daily otolith ring validation, age composition, and origin of the endangered striped catfish in the Mekong. Global Ecology and Conservation.
- Kelson SJ*, Z Hogan, C Jerde, S Chandra, PB Ngor, and A Koning*. Fishing Methods Matter: Comparing the Community and Trait Composition of the Dai (Bagnet) and Gillnet Fisheries in the Tonle Sap River in Southeast Asia. Water 2021, 13,1904.
- Vadeboncoeur Y, M Moore, S Stewart, S Chandra, KS Atkins, JS Baron, K Bouma-Gregson, S Brothers, SN Francoeur, L Genzoli, S Higgins, S Hilt, LR Katona, D Kelly, I Oleksy, T Ozersky, ME Power, D Roberts, AP Smits*, O Timoshkin, F Tromboni*, MJ Vander Zanden, EA Volkova, AS Waters, S Wood, M Yamamuro. 2021. Blue Waters, Green Bottoms: Benthic Filamentous Algal Blooms (FABs) are an Emerging Threat to Clear Lakes Worldwide. BioScience. 71(10) 1011–1027.
- Jane S*, JA Gretchen Hansen , BM Kraemer , PR Leavitt, JL Mincer , RL North, RM Pilla, JT Stetler, CE Williamson, RI Woolway, L Arvola, S Chandra, and many others. 2021. Widespread deoxygenation of warming lakes. Nature. 594, 66–70.
- Tromboni, F. Dilts,T.E.; Null, S.E.; Lohani, S.; Ngor, P.B.; Soum, S.; Hogan, Z.; Chandra, S. Changing Land Use and Population Density Are Degrading Water Quality in the Lower Mekong Basin. Water 2021,13,1948.
- Soum S*, PB Ngor, T Dilts, S Lohani*, S Kelson*, SE Null, F Tromboni, Z Hogan, B Chan, S Chandra. 2021. Spatial and Long-Term Temporal Changes in Water Quality Dynamics of the Tonle Sap Ecosystem. Water 13,2059.
- Sor R*, PB Ngor, S Soum, S Chandra, Z Hogan, SE Null. 2021. Water Quality Degradation in the Lower Mekong Basin. Water. , 13, 1555.
- Maasri AP, M Pyron, ER Arsenault, JH Thorp, B Mendsaikhan, F Tromboni, M Minder, SJ Kenner, J Costello, S Chandra, A Otgonganbat, B Boldgiv. 2021. . Valley-scale hydrogeomorphology drives river fish assemblage variation in Mongolia. Ecology and Evolution. 11(11): 6527-6535.
- Scordo F*, S Chandra, E Suenaga, S Kelson*, J Culpepper*, F Tromboni, T Caldwell*, C Williamson, S Sadro, K Rose, S Poulson. 2021. Smoke from regional wildfire influence lake ecological structure and function. Scientific Reports. 11, 10922 (2021).
- Bess Z*, S Chandra, S Kelson, E Suenega, A Heyvaert. 2021. Zooplankton influences on the phytoplankton, water clarity, and nutrients in Lake Tahoe. Aquatic Sciences. 83 (2).
- Tromboni F*, Jianguo Liu, Emanuele Ziaco, David D Breshears, Kimberly L Thompson, Walter K Dodds, Kyla M Dahlin, Elizabeth A LaRue, James H Thorp, Andrés Viña, Marysa M Laguë, Alain Maasri, Hongbo Yang, Sudeep Chandra, Songlin Fei. 2021. Macrosystems as a metacoupled human and natural ecosystem. Frontiers in Ecology.19(1): 20-29.
- Dodds W, K Rose, S. Fei, and S Chandra. 2021. Macrosystems revisited: Challenges successes in a new subdiscipline in ecology. Frontiers in Ecology and the Environment.
- Pilla R*, and many others. 2021. Global data set of long-term summertime vertical temperature profiles in 153 lakes. Nature Scientific Data.
- Thorp J, WK Dodds, CJ Robbins*, A Maasri*, ER Arsenault*, JA Lutchen*, F Tromboni*, B Hayford, M Pyron, GS Mathews, A Schechner*, and S Chandra. 2021. A framework for lotic macrosystem research. Ecosphere.
- Noble P, G McGaughney*, M Rosen, C Fuller, M Acuni-Lopez, S Chandra. 2021. A 450-year record of environmental change from Castle Lake, California (USA) inferred from diatoms and organic geochemistry. Journal of Paleolimnology. 65(2): 201-217.
- Pin K*, S Nut, Z Hogan, S Chandra, S Saray, B Touch, P Chheng, PB Ngor. 2020. Cambodian Freshwater Fish Assemblage Structure and Distribution Patterns: Using a Large-Scale Monitoring Network to Understand the Dynamics and Management Implications of Species Clusters in a Global Biodiversity Hotspot. Water. 12, 2506.
- Caldwell, T*, S Chandra, TP Albright, AA Harpold, T Dilts, JA Greenberg, S Sadro, MD. Dettinger. 2020. Drivers and projections of ice phenology in mountain lakes in the western United States derived from remote sensing. Limnology and Oceanography.
- Caldwell TJ*, S Chandra, K Feher*, J Simmons*, and Z Hogan. 2020. Ecosystem response to earlier ice break-up date: Climate driven changes to water temperature, lake-habitat specific production, and trout habitat and resource use. Global Change Biology. 26(10): 5475-5491.
- Seballos RC*, KH Wyatt, RJ Bernot, SP Brown, S Chandra, AR Rober. 2020. Nutrient availability and organic matter quality shape bacterial community structure in a lake biofilm. Aquatic Microbial Ecology.
- Baron J, S Chandra, J Elser. 2020. Understanding mountain lakes in a changing world: Introduction to the topical collection. Aquatic Sciences. 82(3): 57.
- Simmons J*, T Campbell*, C Jerde, S Chandra, W Cowan, Z Hogan, J Saenz, K Shoemaker. 2020. Population dynamics of threatened Lahontan cutthroat trout in Summit Lake, Nevada. Scientific Reports.10(1): 1-11.
- Vadebonceour, Y, MV Moore, S Chandra, and SD Stewart*. Littoral Greening of Clear Lakes: The Mystery of Benthic Filamentous Algal Blooms. Limnology and Oceanography Bulletin.
- Tromboni F*, WK Dodds, S Chandra, SR Poulson, A Pandey, A Schechner*. 2020. Respiration in rivers fractionates stable isotopes of dissolved oxygen; a global investigation on the influences of temperature and flow. Biogeochemistry. 147 (2), 199-210.
- Wyatt K, C RC Seballos, MN Shoemaker, SP Brown, S Chandra, K Kuehn, AR Rober, S Sadro. 2019. Journal of Ecology. 107(6), 2737-2746.
- Maasri A, AE Schechner, B Erdenee, WK Dodds, S Chandra, JK Gelhaus, JH Thorp. 2019. Does diel variation in oxygen influence taxonomic and functional diversity of stream macroinvertebrates? Freshwater Science. 38 (4), 692-701.
- Maasri A, JH Thorp, JK Gelhaus, F Tromboni, S Chandra, SJ Kenner. 2019. Communities associated with the Functional Process Zone scale: A case study of stream macroinvertebrates in endorheic drainages. Science of the Total Environment. 677, 184-193.
- Moser KA , JS Baron, J Brahney, IA Oleksy, JE Saros, EJ Hundey, SA Sadro, J Kopáček, R Sommaruga, MJ Kainz, AL Strecker, S Chandra, DM Walters, DL Preston, N Michelutti, F Lepori, SA Spaulding, KR Christianson, JM Melack, JP Smol. 2019. Mountain lakes: eyes on global environmental change. Global and Planetary Change. 178, 77-95.
- Naranjo RC , RG Niswonger, D Smith, D Rosenberry, S Chandra. 2019. Linkages between hydrology and seasonal variations of nutrients and periphyton in a large oligotrophic subalpine lake. Journal of Hydrology. 568, 877-890.
- Jepsen, SM, TC Harmon, S Sadro, B Reid, S Chandra. 2019. Water residence time (age) and flow path exert synchronous effects on annual characteristics of dissolved organic carbon in terrestrial runoff. Science of The Total Environment. 656, 1223-1237.
- Harmon TC, RL Smyth, S Chandra, D Conde, R Dhungel, J Escobar, N Hoyos, JP Lozoya, M Nin, GM Perillo, S Pincetl, MC Piccolo, B Reid, JA Rusak, F Scordo, MI Velez, SR Villamizar, B Wemple, M Zilio. 2018. Socio-economic and environmental proxies for comparing freshwater ecosystem service threats across international sites: A diagnostic approach, Water, 10(11), 1578.
- Tyler S, OP Jensen, Z Hogan, S Chandra, LM Galland*, J Simmons*. 2018. Perspectives on the Application of unmanned aircraft for Freshwater Fisheries Census. Fisheries. 3(11), 510-516.
- Caldwell T*, G Rossi, RE Henery, S Chandra. 2018. Decreased streamflow impacts fish movement and energetics through reductions to invertebrate drift body size and abundance. River Research Applications. 34(8), 965-976.
- Campbell T*, J Simmons*, J Sáenz, CL Jerde, W Cowan, Z Hogan, and S Chandra. 2018. Population connectivity of adfluvial and stream-resident Lahontan cutthroat trout: Implications for resilience, management, and restoration. Canadian Journal of Fisheries and Aquatic Sciences.
- Weisman A*, S Chandra, E Rejmánková, E Carlson. 2018. Effects of Nutrient Limitations and Watershed Inputs on Community Respiration in a Deep, Tropical Lake: Comparison of Pelagic and Littoral Habitats. Water Resources Research. 54(8), 5213-5224.
- Cowart DA*, MA Renshaw, CA Gantz, J Umek, S Chandra, SP Egan, DM Lodge, ER Larson. 2018. Development and field validation of an environmental DNA (eDNA) assay for invasive clams of the genus Corbicula. Management of Biological Invasions. 9(1), 27-37.
- Heslop JK*, S Chandra, WV Sobzcak, SP Davydov, AI Davydova, VV Spektor, KM Walter Anthony. 2017. Variable respiration rates of incubated permafrost soil extracts from the Kolyma River lowlands, north-east Siberia. Polar Research. 36:1, 1305157.
- Johnson BE*, PJ Noble, AC Heyvaert, S Chandra. 2017. Anthropogenic and climatic influences on the diatom flora within the Fallen Leaf Lake watershed, Lake Tahoe Basin, California over the last millennium. Journal of Paleolimnology.
- Larson ER, MA Renshaw, CA Gantz, J Umek*, S Chandra, DM Lodge, SP Egan. 2017. Environmental DNA (eDNA) detects the invasive crayfishes Orconectes rusticus and Pacifastacus leniusculus in large lakes of North America. Hydrobiologia. 800:173–185
- Brett MT, SE Bunn, S Chandra, AW Galloway, F Guo, MJ Kainz, P Kankaala, DC Lau, TP Moulton, ME Power, JB Rasmussen, SJ Taipale JH Thorp, JD Wehr, 2017. How important are terrestrial organic carbon inputs for secondary production in freshwater ecosystems? Freshwater Biology. 62(5): 1365-2427.
- Tyler S, S Chandra, G Grant. 2017. Management strategies for sustainable western water. Eos, 98.