- Department, Office, or School
- Department of Biology
- Associate Professor
Ph.D., New Mexico State University
*denotes student collaborator
Chuan*, X., Carlyle, C.N., Bork, E.W., Chang, S.X., Hewins, D.B. 2020. Extracellular enzyme activity in grass litter varies with grazing history, environment and plant species in temperate grasslands. Science of the Total Environment, 701,134562 .
Bork, E.W., Lyseng, M.P*., Hewins, D.B., Carlyle, C., Chang, S.X., Willms, W. and Alexander, M., 2019. Herbage Biomass and its Relationship to Soil Carbon Under Long-term Grazing in Northern Temperate Grasslands. Canadian Journal of Plant Science, 99(0), 1-12.
Hewins, D.B., Lee, H., Barnes, P.W., McDowell, N.G., Pockman, W.T., Rahn, T. and Throop, H.L., 2019. Early exposure to UV radiation overshadowed by precipitation and litter quality as drivers of decomposition in the northern Chihuahuan Desert. PloS One, 14(2), p.e0210470.
Lyseng, M. P*., Bork, E. W., Hewins, D. B., Alexander, M. J., Carlyle, C. N., Chang, S. X., & Willms, W. D. 2018. Long-term grazing impacts on vegetation diversity, composition, and exotic species presence across an aridity gradient in northern temperate grasslands. Plant Ecology, 219(6), 649-663.
Hewins, D.B., Lyseng, M.P. *, S. X. Chang, Adams, B., Carlyle, C.N., Bork, E.W. In Press. Quantifying the effect of typical land uses on soil carbon quantities and stability across six distinct ecoregions in northern temperate grasslands. Nature Scientific Reports.
Chuan*, X., Carlyle, C.N., Chang, S.X., Bork, E.W., Hewins, D.B.,In Press. Long-term grazing accelerated litter decomposition in northern temperate grasslands. Ecosystems.
Bork, E.W., Hewins, D.B., Tannas*, S., Willms, W.D. 2018.Festuca campestris density and defoliation regulate abundance of the rhizomatous grass Poa pratensisin a fallow field. Restoration Ecology.
Hewins, D. B., Sinsabaugh, R.L., Archer, S.R., Throop. H.L. 2017. Soil-litter mixing and microbial activity mediate decomposition and soil aggregate formation in a sandy shrub-invaded Chihuahuan Desert grassland. Plant Ecology. 218: 459-474.
Hebb*, C. C., Schoderbek*, D. F., Hewins, D.B., Carlyle, C.N., Bork, E.W., Hernandez-Ramierz, G. 2017. Soil physical quality varies among contrasting land uses in northern prairie regions. Agriculture, Ecosystems and the Environment. 240: 14-23.
Hewins, D.B., Chuan*, X., Bork, E.W., Carlyle C.N. 2016. Measuring the effect of freezing on hydrolytic and oxidative extracellular enzyme activities associated with plant litter decomposition. Pedobiologia – Journal of Soil Ecology. http://dx.doi.org/10.1016/j.pedobi.2016.09.002
Hewins, D.B., Broadbent, T.*, Carlyle, C.N., Bork, E.W. 2016. Exploring the effect of defoliation intensity and precipitation pulses on microbial extracellular enzyme activity in northern mixed-grass prairie. Agriculture, Ecosystems and the Environment. 230: 79-86.
Hewins, D. B., Throop, H.L. 2016. Seasonal monsoons and soil-litter mixing overshadow solar radiation as dominant drivers of decomposition in a Chihuahuan Desert dune ecosystem. Journal of Arid Environments. 29:111-118.
Hewins, D. B., Fatemi, F., Carlyle, C.N., Chang, S.X., Bork, E.W. 2016. Grazing, regional climate and soil biophysical impacts on microbial enzyme activity in grassland soil of western Canada. Pedobiologia – Journal of Soil Ecology. doi:10.1016/j.pedobi.2015.10.003.
Tannas*, S., Hewins, D.B., Bork, E.W. 2015. Isolating the role of soil resources, defoliation, and interspecific competition on early establishment of the late successional bunchgrass Festuca campestris. Restoration Ecology. 24:366-374.
Lee, H., Fitzgerald, J.*, Hewins, D.B., McCulley, R.L., Archer, S.R., Rahn, T., Throop, H.L. 2014. Soil moisture and soil-litter mixing effects on surface litter decomposition: A controlled environment assessment. Soil Biology and Biochemistry 72:123-132.
Hewins, D.B., Archer, S.R., Okin, G.S., McCulley, R.L., Throop, H.L. 2013. Soil–Litter Mixing Accelerates Decomposition in a Chihuahuan Desert Grassland. Ecosystems 16:183-195.
Barnes, P. W., Throop, H. L., Hewins, D.B., Abbene, M.L., Archer, S.R. 2012. Soil Coverage Reduces Photodegradation and Promotes the Development of Soil-Microbial Films on Dryland Leaf Litter. Ecosystems 15:311-321
Hewins, D. B., and Hyatt, L. A. 2009. Flexible N uptake and assimilation mechanisms may assist biological invasion by Alliaria petiolata. Biological Invasions12:2639-2647.
Climate Change and You! (Connections in Environmental Studies)
Fundamental Concepts of Biology
Introductory Biology II
Introduction to Environmental Studies
Independent Research in Biology
Environmental Studies Internship
Ecosystem Ecology. Decomposition. Land-use change effects on biogeochemical cycles.