DRI / DIRECTORY / JOHN UMEK
John Umek Profile Photo
Dr. John Umek
Assistant Research Professor, Director of Aquatic Ecology Laboratory
Division 
Hydrologic Sciences

Publications
2022
Harrold, Z., Arienzo, M. M., Collins, M. J., Davidson, J. M., Bai, X., Sukumaran, S., Umek, J. W. (2022). A Peristaltic Pump and Filter-Based Method for Aqueous Microplastic Sampling and Analysis, ACS ES&T Water, 2 (2), 268-277, American Chemical Society, 10.1021/acsestwater.1c00270

2021
Umek, J. W. (2021). Movement of synthetic organic compounds in the food web after the introduction of invasive quagga mussels (Dreissena bugensis) in Lake Mead, Nevada and Arizona, USA, Science of the Total Environment, 752, 141845 – 141860. Elsevier, January 15, 2021

Umek, J. W. (2021). Eastern Sierra Nevada Riparian Areas Assessment for Fuels Reduction

2009
Heyvaert, A. C., Chandra, S., Fritsen, C. H., Hershey, R. L., Moser, D. P., Stone, M. C., Bruckner, J., Lutz, A. D., Memmott, J. C., Umek, J. W., Thomas, J. M. (2009). Contemporary Limnology of Walker Lake, Nevada. Final Report submitted to the Walker Basin Project. In: Restoration of a Desert Lake in an Agriculturally Dominated Watershed: The Walker Lake Basin. (Eds) M.W. Collopy and J.M. Thomas.

Conference Proceedings
2024
Hausner, M. B., Umek, J. W., Goldstein, J., Chaudoin, A., Wilson, K. P. (2024). Drivers of Variability in the Population of Endangered Devils Hole Pupfish (Cyprinodon diabolis) and Management Implications of Those Drivers. Nevada Water Resources Association Annual Meeting, January 30, 2024-February 1, 2024

Hausner, M. B., Umek, J. W., Chaudoin, A., Goldstein, J., Feuerbacher, O., Wilson, K. P. (2024). Drivers of variability in the population of endangered Devils Hole pupfish (Cyprinodon diabolis): a machine learning analysis with management implications. National Park Service Mojave Desert Network Science Symposium: Boulder City, NV, October 16, 2024-October 17, 2024

Wilson, k., Goldstein, J., Wullschleger, J., Chaudoin, A., Feuerbacher, O., Gumm, J., Villanueva, D., Schwemm, M., Umek, J. W., Hausner, M. B. (2024). What’s up with the Devils Hole Pupfish: spring and autumn counts highest in over 20 years. Desert Fishes Council Annual Meeting: Grand Junction, CO, November 21, 2024-November 23, 2024

Umek, J. W., Sada, D. W. (2024). Effects of Non-Native Ungulates on Spring Condition and Aquatic Communities in the Northern Great Basin. Nevada Water Resources Association Annual Meeting: Las Vegas Nevada, January 29, 2024-February 1, 2025

Umek, J. W. (2024). Assessment of the Ecological Health of Spring Ecosystems in the Great Basin. Invited Speaker: Stockton California, February 6, 2024-January 6, 2025

Umek, J. W., Sada, D. W., Knott, J., Phillips, F. (2024). Environmental factors influencing ancient and contemporary aquatic life in southern Great Basin spring systems,. Devils Hole Workshop: Longstreet Casino and RV Resort, April 24, 2024-April 27, 2024

Umek, J. W. (2024). Assessment of the Ecological Health of Spring Ecosystems. Grand Staircase-Escalante Symposium: Escalante Visitor Center UT, March 21, 2024-March 22, 2024

2023
Umek, J. W., Hausner, M. B., Wilson, K. P. (2023). Assessing Ecosystem and Population Dynamics to Determine the Primary Drivers of Devils Hole Pupfish Population Trends. Devils Hole Workshop: Amargosa Valley, NV, April 26, 2023-April 28, 2023

Wilson, K., Goldstein, J., Chaudoin, A., Wullschleger, J., Bower, M., Feuerbacher, O., Gumm, J., Schwemm, M., Senger, B., Umek, J. W., Hausner, M. B. (2023). Recent developments of the Devils Hole program and encouraging pupfish count numbers. Devils Hole Workshop: Amargosa Valley, NV, April 26, 2023-April 28, 2023

Umek, J. W., Wilson, K. P., Goldstein, J., Chaudoin, A., Hausner, M. B. (2023). Assessing ecosystem and population dynamics to determine the primary drivers of Devils Hole pupfish population trends. Desert Fishes Council Annual Meeting: Bishop, CA, November 15, 2023-November 19, 2023

Hausner, M. B., Umek, J. W., Goldstein, J., Chaudoin, A., Wilson, K. P. (2023). Historical and Projected Drivers of Population Dynamics of the Endangered Devils Hole Pupfish (Cyprinodon diaboils). American Geophysical Union Fall Meeting, December 11, 2023-December 15, 2023

2022
Arienzo, M. M., Harrold, Z. R., Collins, M. J., Davidson, J. M., Bai, X., Sukumaran, S., Umek, J. W. (2022). A peristaltic pump and filter-based method for aqueous microplastic sampling and analysis. SYMPOSIUM ON MICROPLASTICS ANALYTICAL AND REFERENCE STANDARDS — OPPORTUNITIES TO ADVANCE MICROPLASTIC SCIENCE: Online