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Michael Barfield
Assistant Scientist

Department of Biology
University of Florida

111 Bartram Hall
352.392.6914

e-mail: mjb01@ufl.edu

Mail: Department of Biology
111 Bartram Hall, PO Box 118525
Gainesville, FL 32611-8525
 

Picture of M. Barfield

I work at the Arthur R. Marshall, Jr., Ecological Sciences Laboratory. Publications, listed below, include research on adaptation in source-sink systems (Holt et al. 2003, 2004a, 2004b, 2005; Holt and Barfield 2008, 2009b), infectious disease ecology (Orive et al. 2005; Holt and Barfield 2006; Wayne et al. 2011), effects of temporal variation on populations (Holt and Barfield 2003; Holt et al. 2003, 2004b; Roy et al. 2005), evolution (Knight et al. 2008; Barfield et al. 2011; Scheiner et al. 2012), species ranges ( Filin et al. 2008; Holt et al. 2011; Holt and Barfield 2011) and arctic lake ecology (O'Brien et al. 2004, 2005).  


Publications at the Ecological Sciences Lab

Overcoming Allee effects through evolutionary, genetic, and demographic rescue.
A.R. Kanarek, C.T. Webb, M. Barfield and R.D. Holt. 2015.
Journal of Biological Dynamics 9: 15-33.

Limits on ecosystem trophic complexity: insights from ecological network analysis.
R.E. Ulanowicz, R.D. Holt and M. Barfield. 2014.
Ecology Letters 17:127–136.

Direct plant-predator interactions as determinants of food chain dynamics.
R.D. Holt and M. Barfield. 2013.
Journal of Theoretical Biology 339: 47–57.

Unstable predator-prey dynamics permits the coexistence of generalist and specialist predators, and the maintenance of partial preferences.
R.D. Holt, E. Taylor, M. Roy and M. Barfield. 2013.
Israel Journal of Ecology and Evolution 59: 27–36.

Allee effects, aggregation, and invasion success.
A.R. Kanarek, C.T. Webb, M. Barfield and R.D. Holt. 2013.
Theoretical Ecology 6: 153-164. 

Trait-mediated effects, density dependence, and the dynamic stability of ecological systems.
R.D. Holt and M. Barfield. 2012.
In T. Ohgushi, O. Schmitz and R.D. Holt, eds. Trait-Mediated Indirect Interactions: Ecological and Evolutionary Perspectives. Cambridge University Press.

The genetics of phenotypic plasticity. XI. Joint evolution of plasticity and dispersal rate.
S.M. Scheiner, M. Barfield and R.D. Holt. 2012.
Ecology and Evolution 2: 2027-2039.
Supplementary Information

The prevalence and persistence of sigma virus, a biparentally transmitted parasite of Drosophila melanogaster.
M.L. Wayne, G.M. Blohm, M.E. Brooks, K.L. Regan, B.Y. Brown, M. Barfield, R.D. Holt and B.M. Bolker. 2011.
Evolutionary Ecology Research 13: 323-345.

Predation and the evolutionary dynamics of species ranges.
R.D. Holt, M. Barfield, I. Filin and S. Forde. 2011.
American Naturalist 178: 488-500. 
Supplementary Information

Theoretical perspectives on the statics and dynamics of species’ borders in patchy environments.
R.D. Holt and M. Barfield. 2011.
American Naturalist 178: S6-S25.

Evolution in stage-structured populations.
M. Barfield, R.D. Holt and R. Gomulkiewicz. 2011.  
American Naturalist 177: 397-409.
Appendices Correction 1 Correction 2

Genetics, adaptation, and invasion in harsh environments.
R. Gomulkiewicz, R.D. Holt, M. Barfield and S.L. Nuismer. 2010.  
Evolutionary Applications 3: 97-108. 

Metapopulation perspectives on the evolution of species’ niches.
R.D. Holt and M. Barfield. 2009b.
In S. Cantrell, C.Cosner and S. Ruan, eds. Spatial Ecology. CRC Press.

Trophic interactions and range limits: The diverse roles of predation.
R.D. Holt and M. Barfield. 2009a.
Proceedings of the Royal Society B 276: 1435-1442.

Predator shadows: Complex life histories as generators of spatially patterned indirect interactions across ecosystems.
M.W. McCoy, M. Barfield and R.D. Holt. 2009.
Oikos 118: 87-100. 

Habitat selection and niche conservatism.
R.D. Holt and M. Barfield. 2008.
Israel Journal of Ecology and Evolution 54: 295-309.

Evolutionary dynamics as a component of stage-structured matrix models: An example using Trillium grandiflorum.
T.M. Knight, M. Barfield and R.D. Holt. 2008. 
American Naturalist 172: 375-392.

The relation of density regulation to habitat specialization, evolution of a species' range, and the dynamics of biological invasions. 
I. Filin, R.D. Holt and M. Barfield. 2008. 
American Naturalist 172: 233-247.
Appendix

Within-host pathogen dynamics: Some ecological and evolutionary consequences of transients, dispersal mode, and within-host spatial heterogeneity.
R.D. Holt and M. Barfield. 2006.
In Z. Feng, U. Dieckmann and S. Levin, eds. Disease Evolution: Models, Concepts, and Data Analyses. American Mathematical Society.

Temporal autocorrelation can enhance the persistence and abundance of metapopulations comprised of coupled sinks.
M. Roy, R.D. Holt and M. Barfield. 2005.
American Naturalist 166: 246-261.
Appendix

Theories of niche conservatism and evolution: Could exotic species be potential tests?
R.D. Holt, M. Barfield and R. Gomulkiewicz. 2005.
In D.F. Sax, S.D. Gaines and J.J. Stachowicz, eds. Species Invasions: Insights to ecology, evolution and biogeography.  Sinauer Associates, Sunderland.

Long-term response and recovery of a partitioned arctic lake to nutrient addition.
W.J. O’Brien, M. Barfield, N. Bettez, A.E. Hershey, J.E. Hobbie, G. Kipphut, G. Kling and M.C. Miller. 2005.
Freshwater Biology 50: 731-741.

Viral infection in internally-structured hosts. I. Conditions for persistent infection.
M.E. Orive, M.N. Stearns, J.K. Kelly, M. Barfield, M.S. Smith and R.D. Holt. 2005.
Journal of Theoretical Biology 232: 453-466.
Appendices

Temporal variation can facilitate niche evolution in harsh sink environments.
R.D. Holt, M. Barfield and R. Gomulkiewicz. 2004b.
American Naturalist 164: 187-200. 
Appendix

Physical, chemical, and biotic impacts on arctic zooplankton communities and diversity.
W.J. O'Brien, M. Barfield, N.D. Bettez, G.M. Gettel, A.E. Hershey, M.E. McDonald, M.C. Miller, H. Mooers, J. Pastor, C. Richards and J. Schuldt. 2004. 
Limnology and Oceanography 49: 1250-1261.

Allee effects, immigration, and the evolution of species’ niches.
R.D. Holt, T. Knight and M. Barfield. 2004a.
American Naturalist 163: 253-262.

Impacts of environmental variability in open populations and communities: “Inflation” in sink environments.
R.D. Holt, M. Barfield and A. Gonzalez. 2003.
Theoretical Population Biology 64: 315-330.

Impacts of temporal variation on apparent competition and coexistence in open ecosystems.
R.D. Holt and M. Barfield. 2003.
Oikos 101: 49-58.

The phenomenology of niche evolution via quantitative traits in a 'black-hole' sink.
R.D. Holt, R. Gomulkiewicz and M. Barfield. 2003.
Proceedings of the Royal Society of London B. 270: 215-224.



Prior Biology Publications

The functional response of drift-feeding arctic grayling: The effects of prey density, water velocity and location efficiency.
W.J. O'Brien, M. Barfield and K. Sigler. 2001.
Canadian Journal of Fisheries and Aquatic Sciences 58: 1957-1963.

On the relationship between the ideal free distribution and the evolution of dispersal.
R.D. Holt and M. Barfield. 2001.
In J. Clobert, E. Danchin, A.A. Dhondt and J.D. Nichols, eds. Dispersal. Oxford University Press, Oxford.

The effects of density dependence and immigration on local adaptation and niche evolution in a black-hole sink environment.
R. Gomulkiewicz, R.D. Holt and M. Barfield. 1999.
Theoretical Population Biology 55: 283-296.

Population dynamics and the evolutionary stability of biological control.
R.D. Holt, M.E. Hochberg and M. Barfield. 1999.
In B. Hawkins and H. Cornell, eds. Theoretical Approaches to Biological Control. Cambridge University Press, Cambridge, UK.