Philip N. Smith, Ph.D.

Research Interests:

Ecotoxicology

Wildlife Toxicology

Ecological Risk Assessment

Classes:

ENTX 6371 Ecological Risk Assessment

Bio:

Texas Tech Faculty Since 2002

Dr. Smith’s research examines contaminant exposure among ecological receptors and subsequent physiological and ecological consequences. His research is strategically aligned to support ecological risk assessment which is also his primary teaching emphasis. Current research in the Smith lab examines life-stage specific susceptibility to chemical stressors, aerial transport and unintended impacts of pesticides and pharmaceuticals, and pollinator ecotoxicology. He is an editor of the international scientific journal Environmental Pollution, and associate editor of Environmental Toxicology & Chemistry.

Selected Publications:

1. Wesley, Kaitlyn R., Fuerniss, Luke K., Hall, Jerica R., Young, J. D., Green, Frank B., Smith, Philip N., Hutcheson, John P., Johnson, Bradley J. 2025. Effects of implant status and breed type on feedlot performance, carcass characteristics, sera metabolites, and immunohistochemical responses in finishing steers. Journal of Animal Science, in press. https://doi.org/10.1093/jas/skaf003
   
   
2. Green, Frank B., Munoz, Sonia, Smith, Philip N. 2023. Laboratory determination of particulate-matter-bound agrochemical toxicity among honeybees, mason bees, and painted lady butterflies. Environmental Toxicology and Chemistry. 42(12):2642-2650. https://doi.org/10.1002/etc.5730
   
   
3. Emert, Amanda D., Portillo-Quintero, Carlos, Griffis-Kyle, Kerry, Smith, Philip N. 2023. USEPA CALPUFF validation and dispersion modeling of beef cattle feedlot PM10 and PM2.5 emissions factors. Atmospheric Environment 316, 120189. https://doi.org/10.1016/j.atmosenv.2023.120189
   
   
4. Green, Frank B., Peterson, Eric M., Emert, Amanda, Subbiah, Seenivasan, Smith, Philip N. 2023. Pollinator mortality due to agrochemical-laden particulate matter from beef cattle feedyards. Environmental Science and Technology, 57(40):14839-14848. https://doi.org/10.1021/acs.est.3c03135
   
   
5. Emert, Amanda D., Griffis-Kyle, Kerry, Green, Frank B., Smith, Philip N. 2023. Atmospheric transport of particulate matter and particulate-bound agrochemicals from beef cattle feedlots: human health implications for downwind agricultural communities. Science of the Total Environment 894, 164678. https://doi.org/10.1016/j.scitotenv.2023.164678
   
   
6. Emert, Amanda D., Subbiah, Seenivasan, Green, Frank B., Griffis-Kyle, Kerry, Smith, Philip N. 2023. Atmospheric deposition of particulate matter from beef cattle feedlots is a likely contributor of pyrethroid occurrence in isolated wetland sediment: Source apportionment and ecological risk assessment. Environmental Pollution 316, 120493. https://doi.org/10.1016/j.envpol.2022.120493
   
   
7. Green, Frank B., Peterson, Eric M., Smith, Philip N. 2023. A novel laboratory method for simulating pollinator exposure to particulate matter. Ecotoxicology 32(4)544-551. https://doi.org/10.1007/s10646-023-02660-9
   
   
8. Peterson, Eric M., Thompson, Kelsey N., Shaw, Katherine R., Tomlinson, Caleb, Longing, Scott D., Smith, Philip N. 2021. Use of nest bundles to monitor agrochemical exposure and effects among cavity nesting pollinators. Environmental Pollution 286:117142. https://doi.org/10.1016/j.envpol.2021.117142
   
   
9. Smith, Philip N. 2021. The meat of the matter: Environmental dissemination of beef cattle agrochemicals. Environmental Toxicology & Chemistry 40(4)965-966. https://doi.org/10.1002/etc.4965
   
   
10. Peterson, Eric M., Green, Frank B., Subbiah, Seeni, Emert, Amanda, Smith, Philip N. 2021. Agrochemical occurrence on co-located wildflowers and wild bees collected near beef cattle feed yards and row crops. Integrated Environmental Assessment & Management 18(1):163-173. https://doi.org/10.1002/ieam.4436
    
    
11. Smith, Philip N., Armbrust, Kevin L., Brain, Richard A., Chen, Wenlin, Galic, Nika, Ghebremichael, Lula, Giddings, Jeffrey M., Hanson, Mark L., Maul, Jonathan D., van der Kraak, Glen, Solomon, Keith R. Assessment of risks to listed species from the use of atrazine in the USA: A perspective. Journal of Toxicology & Environmental Health, Part B 24(6)223-306.
    https://doi.org/10.1080/10937404.2021.1902890
    
    
12. Sandoz, M. A., Lewis, M. M., Wages, M., Peterson, E. M., Clendening, S., Wooten, K. J., Smith, P. 2020. Aqueous ractopamine exposure below 0.22 mg/L has no effect on mortality, malformation, or growth of developing Xenopus laevis tadpoles. Toxicological & Environmental Chemistry 102(5-6):261-271. https://doi.org/10.1080/02772248.2020.1778700
    
    
13. Peterson, Eric M., Green, Frank B., Smith, Philip N. 2020. Toxic responses of blue orchard mason bees (Osmia lignaria) following contact exposure to neonicotinoids, macrocyclic lactones, and pyrethroids. Ecotoxicology & Environmental Safety 208:111681. https://doi.org/10.1016/j.ecoenv.2020.111681
    
    
14. Peterson, Eric M., Green, Frank B., Smith, Philip N. 2020. Pesticides used on beef cattle feed yards are aerially transported into the environment via particulate matter. Environmental Science & Technology 54(20):13008-13015. https://pubs.acs.org/doi/10.1021/acs.est.0c03603
    
    
15. Longing, Scott D., Peterson, Eric M., Jewett, Christopher T., Rendon, Bianca, Discua, Samuel A., Wooten, Kimberly J., Subbiah, Seeni, Smith, Philip N., McIntyre, Nancy E. 2020. Exposure of foraging wild bees to neonicotinoids in the U.S. Southern High Plains. Environmental Entomology 49:528-535. https://doi.org/10.1093/ee/nvaa003
    
    
16. Peterson, Eric M., Green, Frank B., Smith, Philip N. 2020. Pesticides used on beef cattle feed yards are aerially transported into the environment via particulate matter. Environmental Science & Technology 54(20):13008-13015. https://doi.org/10.1021/acs.est.0c03603
    
    
17. Peterson, Eric M., Shaw, Katherine, Smith, Philip N. 2019. Toxicity of agrochemicals among larval and adult painted lady butterflies (Vanessa cardui). Environmental Toxicology & Chemistry 38:2629-2636. https://doi.org/10.1002/etc.4565
    
    
18. Smith, Philip N., McEachran, Andrew D., Wooten, Kimberly J., Blackwell, Brett R. 2019. A preliminary evaluation of veterinary antibiotics, estrogens, in vitro estrogenic activity, and microbial communities in airborne particulate matter collected near dairy production facilities. Aerobiologia 35(2):315-326. https://doi.org/10.1007/s10453-019-09559-1
    
    
19. Wooten, Kimberly J., Mayer, Gregory D., Smith, Philip N.  2019.  Persistence of elevated concentrations of particulate matter, affiliated pharmaceuticals, and tetracycline resistance genes downwind of feedyards. Environmental Pollution 247:467-473. https://doi.org/10.1016/j.envpol.2018.12.047
    
    
20. Thompson, Kelsey N., Wooten, Kimberly J., Hensley, Loren L., Smith, Philip N., Mayer, Gregory D. 2018. Viable antimicrobial resistant bacteria are transported from cattle feed yards via aerosolized particulate matter. Journal of Veterinary Science & Medicine 6(2):4. http://dx.doi.org/10.13188/2325-4645.1000039
    
    
21. Wooten, Kimberly J., Sandoz, Melissa A., Smith, Philip N.  2018.  Ractopamine in particulate matter emitted from beef cattle feedyards and playa wetlands in the Central Plains. Environmental Toxicology & Chemistry 37(4):970-974. https://doi.org/10.1002/etc.4036
    
    
22. Sandoz, Melissa A., Wooten, Kimberly J., Clendening, Sheree L., Hensley, Loren L., Smith, Lucas R., Smith, Philip N. 2017. Transport mechanisms for veterinary pharmaceuticals from beef cattle feedyards to wetlands: Is aerial deposition a contributing source? Agriculture, Ecosystems & Environment 252:14-21.
    
    
    
23. Peterson, Eric M., Wooten, Kimberly J., Subbiah, Seenivasan, Anderson, Todd A., Longing, Scott, Smith, Philip N.  2017.  Agrochemical mixtures detected on wildflowers near cattle feed yards. Environmental Science & Technology Letters 4(6):216-220. https://pubs.acs.org/doi/full/10.1021/acs.estlett.7b00123