Featured grants
- Williamson, Paula S (Co-Principal), Chang, Carolyn (Principal), Morrish, Doug (Co-Principal), Weimer, Nick (Co-Principal). ASPIRE (Academic Success and Professional Integration with Research Experience), National Science Foundation, Federal, $494725. (Submitted: February 2025, Funded: 2025 - Present). Grant.
- Williamson, Paula S (Principal), Cavitt, Mary E (Co-Principal), Bolch, Kambra K (Co-Principal), Weimer, Nicholas E (Co-Principal), Booth, Chad (Co-Principal). GENERACIÓN STEM: Promoting Hispanic and Low-Income Student Success through Individualized Support, Transfer Navigation, and STEM Career Preparation, U.S. Department of Education, Federal, $4949136. (Funded: October 2021 - September 2026). Grant.
- Martina, Jason Philip (Principal), Percent Contribution: %55, Williamson, Paula S (Co-Principal), Percent Contribution: %45. Developing a landowner outreach program for endangered Leavenworthia texana and Physaria pallida in East Texas, TPWD, State, $99292. (Submitted: March 2020, Funded: January 2021 - December 31, 2023). Grant.
- Williamson, Paula S. Black lace cactus demographics, genetics and landowner conservation outreach project, USFWS/TPWD, Federal, $124974. (Funded: 2015 - 2019). Grant.
- Williamson, Paula S. The Research and Recovery of Star Cactus (Astrophytum asterias), USFWS/TPWD Section 6, Endangered Species Grant, Federal, $345147. (Funded: 2004 - 2008). Grant.

Featured scholarly/creative works
- Bellis, J., Albrecht, M., Maschinski, J., Dalrymple, S., Keir, M., Chambers, T., … Heineman, K. (2025). The relative influence of geographic and environmental factors on rare plant translocation outcomes. Journal of Applied Ecology.
- McClendon, A., (Waliczek) Cade, T. M., Serenari, C., & Williamson, P. S. (2024). Effects of an informal educational program on knowledge and perceptions of invasive species management. HortTechnology, 34(1), 71–79. https://doi.org/DOI:10.21273/horttech05276-23
- Bellis, J., Osazuwa-Peters, O., Maschinski, J., Keir, M., Parsons, E. W., Kaye, T. N., … Albrecht, M. A. (2023). Identifying predictors of reintroduction success in rare plant species. Conservation Biology, 38(2). https://doi.org/https://doi.org/10.1111/cobi.14190
- Williamson, P. S., Berresford, P., Fehlberg, S. D., M. Terry, Strong, A. W., McKinney, J., & Ermakova, A. O. (2022). Occurrence and phylogeny of the endangered Texas endemic Echinocereus fitchii subsp. albertii. Bradleya, 40, 27–48.
- Berresford, P., Williamson, P. S., McKinney, J., Best, C., & Terry, M. (2022). Case studies of building collaborative partnerships for conservation of endangered and threatened cacti in Texas. Bradleya, Special, 17–32.
Featured awards
- Award / Honor Recipient: Achievement Award, Outstanding Contributions to Graduate Education in the Southern Region, Conference of Southern Graduate Schools. 2017
- Award / Honor Nominee: Texas State Excellence in Diversity Nominee, Texas State University. 2010
- Award / Honor Recipient: Southwestern Association of Naturalists Meritorious Service Award, Southwestern Association of Naturalists. 2009
- Award / Honor Recipient: Texas State University Presidential Award for Excellence in Service, Texas State University. 2005
- Award / Honor Recipient: Presidential Award for Excellence in Teaching, Southwest Texas State University. 1994

Featured service activities
- Member
Faculty Development Advisory Committee
- Other
Alpha Chi National Honor Society
- Member
University Performing Arts Committee
- Member
U.S. Fish and Wildlife Service Leavenworthia texana Species Status Assessment working group
- Member
Presidential Award for Excellence in Scholarly/Creative Activities Committee
- Member
Quality Enhancement Plan (QEP) Development Task Force