University of California, Riverside

Environmental Sciences

David E. Crowley

David E. Crowley

David E. Crowley Photo


Academic Degrees:

  • BS. Agriculture, University of Kentucky, 1976
  • MS. Horticulture, University of Kentucky, 1979
  • Ph.D., Colorado State University, 1986


  • Soil Microbiology
  • Bioremediation
  • Microbial Ecology
  • Plant-Soil Relations

Dr. Crowley has retired as of June 2016 and is no longer receiving new students

Representative Publications:

 Book Chapters:
  • Lambais, M.R. and D.E. Crowley. 2014. Bacterial diversity in tree canopies of the Atlantic Forest. In: K. Nelson, (ed.) Encyclopedia of Metagenomics. Springer. 6 p.
  • Ahmad, Z., M. Imran, M. Arshad, D.E. Crowley. 2014. Biosurfactants and bioemulsifiers for bioremediation of industrial wastes. In: R. Chandra (ed.) Advances in Biodegradation and Bioremediation of Industrial Wastes. CRC Press, Boca Raton, FL. 35 manuscript pages.
 Peer Reviewed Journal Articles:
  • Lagos, L., O.U. Navarrete, F. Maruyama, D.E. Crowley, F.P. Cid, M.L. Mora, M.A. Jorquera. 2014. Bacterial community structure in rhizosphere microsites of ryegrass (Lolium perenne var Nui) as revealed by pyrosequencing. Biol. Fert. Soils. 5:14 pgs. DOI 10.1007/s00374-014-0939-2
  • Lambais, M.R., A.R. Lucheta, and D.E. Crowley. 2014. Bacterial community assemblages associated with the phyllosphere, dermosphere and rhizosphere of tree species of the Atlantic forest are host taxon dependent. Microbial Ecol. In press.
  • Imran, M., M. Arshad, H.N. Asghar, M. Asghar and D.E. Crowley. 2014. Potential of Shewanella sp. strain IFN4 to decolorize azo dyes under optimal conditions. Int. J. Agric. Biol. 16:578-584.
  • Jorquera, M.A., N.G. Inostroza, L.M. Lagos, P.J. Barra, L.G. Marileo, J.I. Rilling, D.C. Campos, D.E. Crowley, A.E. Richardson, M.L. Mora. 2014. Bacterial community structure and detection of putative plant growth-promoting rhizobacteria associated with plants grown in Chilean agro-ecosystems and undisturbed ecosystems. Biol. Fert. Soils. 13 pages. DOI 10.1007/s00374-014-0935-6
  • Ma, J., M. Ibekwe, D.E. Crowley, C-H Yang. 2014. Persistence of Escherichia coli O157 and non-O157 strains in agricultural soils. Sci. Total Environ. 490:822-829.
  • Domingues, M.T., C.C. Bueno, C.H. Watanabe, L.F. Fraceto, J.C. Loyola-Licea, D. Crowley, and A.H. Rosa. 2014. Polymeric alginate microspheres containing biochar to immobilize phosphate ions. Chem. Eng. Trans. 37:109-114. DOI: 10.3303/CET1437019
  • Hale, L., M. Luth, R. Kenney, D.E. Crowley. 2014. Evaluation of pinewood biochar as a carrier of bacterial strain Enterobacter cloacae UW5 for soil inoculation. Applied Soil Ecology. 84:192-199.
  • Liu, Y. Y. Liu, Y. Ding, T. Zhou, J. Zheng, D.E. Crowley, L. Li, X. Zhang, Jheng, G. Pan, X. Yu and J. Wang. 2014. Abundance, composition and activity of ammonia oxidizer and denitrifier communities in metal polluted paddy soils from South China. PLOS One. 9:e102000.
  • Dickens, S.J., E. Allen, L. Santiago, and D.E. Crowley. 2014. Extractable N and microbial community structure respond to grassland restoration regardless of historical context and soil composition. AoB Plants 7: plu085; doi:10.1093/aobpla/plu085
  • Imran, M., M. Arshad, A. Khalid, S. Hussain, M.W. Mumtaz, D.E. Crowley. 2015. Decolorization of reactive black-5 by Shewanella sp. in the presence of metal ions and salts. Water Environ. Research. 87:579-86. doi: 10.2175/106143014X14062131178114
  • Sun, R., R.W. Belcher, J. Liang, L. Wang, B. Thater, D.E. Crowley, G. Wei. 2015. The effect of cowpea (Vigna unguiculata) with root mucilage on phenanthrene dissipation and microbial community composition using phospholipid fatty acid PLFA analysis and artificial neural network (ANN) modeling. Int. Biodeterioration & Biodegradation. 100:29-37
  • Hale, L., M. Luth, and D.E. Crowley. 2015. Biochar characteristics relate to its utility as an alternative soil inoculum carrier to peat and vermiculite. Soil Biol. Biochem. 81: 228 - 235.
  • Sun, R., D.E. Crowley, G. Wei. 2015. Study of phenanthrene utilizing bacterial consortia associated with cowpea (Vigna unguiculata) root nodules. World J. of Microbiology and Biotechnology. 31:415-433. DOI 10.1007/s11274-014-1796-8
  • Xu, Y, Y. He, Q. Zhang, J. Xu, and D. Crowley. 2015. Coupling between pentachlorophenol dechlorination and soil redox as revealed by stable carbon isotope, microbial community structure, and biogeochemical data. Environ. Sci. Technol. DOI: 10.1021/es505040c
  • Wang, X., M. Chen, J. Xiao, L.R. Hao, D.E. Crowley, Z. Zhang, J. Yu, N. Huang, and J. Wu. 2015. Naphthenic acid degradation and metal resistance in Cupriavidus gilardii CR3. PLoS One. In Press.
  • Hale, L. and D.E. Crowley, 2015. DNA extraction methodology for biochar amended sand and clay. Biol. Fert. Soils. 51: 733-738.
  • Imran, M., B. Shaharoona, D.E. Crowley, A. Khalid, S. Hussain, and M. Arshad. 2015. The stability of textile azo dyes in soil and their impact on microbial phospholipid fatty acid profiles. Ecotoxicol. and Environ Safety. 120: 163-168.
  • Bian, R., K. Cheng, J. Zheng, X. Liu, Y. Liu1, Z. Li, L. Li, P. Smith, G. Pan, D.E. Crowley, J. Zheng, X. Zhang, L. Zhang, and Q. Hussain. 2015. Does metal pollution matter with C retention by rice soil? Scientific Reports. 5:13233 | DOI: 10.1038/srep13233
  • Ahmad, Z., M. Arshad, B. Khoshnevisan, M. Yousefi, M. Imran, S. Hussain, and D. Crowley. 2015. Comparative efficacy of ANN and ANFIS models in estimating biosurfactant production produced by Klebsiella FKOD36. Stochastic Environ. Res. Risk Assessment. In press.
  • Imran, M., M. Arshad, D.E. Crowley, F. Negm, A. Khalid, and B. Shaharoona. 2015. Yeast extract promotes decolorization of azo dyes by Shewanella sp. through its activity as a redox mediator. In press. Ecotoxicol. Environ. Safety
  • Qiao Y, D. Crowley, K. Wang, H. Li, H. Zhang. Effects of biochar and arbuscular mycorrhizae on bioavailability of potentially toxic elements in an aged contaminated soil. Environ. Pollution. In press. Aug 19.
  • Barra, P.J., N.G. Inostroza, J.J. Acuña, M.L. Mora, D.E. Crowley, M. Jorquera. Isolation of endophytic and rhizospheric bacterial consortia from avocado (Persea americana Mill.) and their effect on growth, biomass and superoxide dismutase activity of wheat seedlings (Triticum aestivum L.) under salinity stress. Appl Soil Ecol. In press.
  • Dmitriev, V.V., D.E. Crowley, T.G. Rusakova, A. Zyonarev, C.M. Negri, S.A. Kolesnikova. 2014. Cell wall canal formation in hydrocarbon degrading yeasts: a novel phenotype expressed during apoptosis induced by carbon starvation. Yeast. In press.
  • Mahmood, S., A. Khalid, T. Mahmood, J.C. Loyola-Licea and D.E. Crowley. 2014. Biotreatment of simulated tannery wastewater containing Reactive Black 5, Aniline and CrVI using a biochar packed bioreactor. Royal Soc. Chem. In press.
  • Mahmood, S.N., M. Ahmad, M. Naveed, M. Imran, Z.A. Zahir, and D.E. Crowley. 2015. Relationship between in vitro characterization and comparative efficacy of plant growth promoting rhizobacteria for improving cucumber salt tolerance. Arch. Microbiol. (In press)
  • Ahmad, Z., M. Arshad, H.N. Asghar, M.A. Sheikh, and D.E. Crowley. 2015. Isolation, screening, and functional characterization of biosurfactant producing bacteria isolated from a crude oil contaminated site. Int. J. Agric. Biol. DOI: 10.17957/IJAB/15.0126
  • Sun, D., L. Hale, D.E. Crowley. Nutrient supplementation of pinewood biochar for use as a bacterial inoculum carrier" Submitted to Biology and Fertility of Soils. Accepted with minor revision, Dec 21, 2015.
 Refereed Review Articles:
  • Imran, M., D.E. Crowley, A. Khalid, S. Hussain, M.W. Mumtaz and M. Arshad. 2014. Microbial biotechnology for decolorization of textile wastewaters. Rev. Env. Sci. and Bio/Technol. In Press. (Accepted July 7, 2014)
  • Imran, M., M. Arshad, A. Khalid, S. Kanwal and D.E. Crowley. 2014. Perspectives of rhizosphere microflora for improving Zn bioavailability and acquisition by higher plants. Int. J. Agric. Biol. 16:653-662.
  • Mahmood, S., A. Khalid, M. Arshad, T. Mahmood, D.E. Crowley. 2015. Detoxification of azo dyes by bacterial oxidoreductase enzymes. Crit. Rev. Biotechnol. 13 pages. DOI: 10.3109/07388551.2015.1004518
  • Escalera, J. and D.E. Crowley. 2014. Optimizing irrigation management through soil water monitoring. California Avocado Society Yearbook 96: in press.
  • Escalera, J., A. Dinar, and D.E. Crowley 2015. Adoption of water-related technology and management practices by the California avocado industry. Agricultural and Resource Economics Update. In press.

Courses Taught:

  • ENSC 002 - Environmental Quality
  • ENSC 120 - Soil Ecology
  • SLSC 134 - Soil Conditions and Plant Growth
  • SLSC 211 - Microbial Ecology

Graduate Program Affiliations and Research Focus Areas:


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Environmental Sciences
Geology 2460

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