Todd Hawbaker

Biography

Todd J. Hawbaker received his B.S. degree in animal ecology in 1998 from Iowa State University.  After receiving his B.S., he worked for a couple of years burning and restoring tallgrass prairie in southwestern Minnesota and then pursued graduate school.  He received his M.S. degree in forestry in 2003 and Ph.D. degree in forestry in 2009 from the University of Wisconsin.  He joined the U.S. Geological Survey as a research ecologist in 2008 and currently works at the Geosciences and Environmental Change Science Center in Denver, CO.  His current research with the USGS combines remote sensing with statistical and process-based ecosystem simulation models to understand the drivers behind ecosystem disturbances and quantify the impacts of disturbances on human and natural systems.

 

Current research projects:

National-scale wildfire and fire-management impacts on ecosystem carbon storage and greenhouse-gas emissions

The USGS is conducting a national-scale assessment of carbon storage and greenhouse gas fluxes as mandated by Section 712 of the Energy Independence Act of 2007, also known as LandCarbon. Todd’s participation in this effort is twofold. First, an assessment is being conducted to quantify the impacts of recent wildfires on greenhouse gas emissions. Second, a suite of data, tools, and models are being developed to estimate future potential wildfire activity, biomass consumption, and greenhouse gas emissions under a range of climate, land-use/land-cover change, and fire-management scenarios. More details about the LandCarbon project, including ecosystem disturbances, methodology can be found at http://www.usgs.gov/global_change/carbon/methodology.asp

 

Landsat Burned Area Products

The USGS is developing research-quality, application-ready data products using historic, current, and future Landsat data. Todd leads the development of the Landsat Burned Area Algorithm and Products.  Our approach uses a combination of machine learning and object-based extraction to identify burned areas in both forest and non-forest ecosystems from every available Landsat image. More details about this effort can be found at http://remotesensing.usgs.gov/ecv/index.php  Our data for the conterminous US can be found at https://doi.org/10.5066/F73B5X76

 

Education:

  • 2009, PhD Forestry, University of Wisconsin – Madison.  Dissertation title: Fire in the wildland-urban interface, a national comparison of patterns of fire occurrence and fire risk to homes.
  • 2003, M.S. Forestry, University of Wisconsin – Madison.  Thesis title: Road density and landscape pattern in Northern Wisconsin, USA; present and past perspectives on environmental constraints and social drivers.
  • 1998, B.S. Animal Ecology, Iowa State University.

 

Professional experience:

  • Research Ecologist (Oct. 2012 - present), U.S. Geological Survey, Geosciences and Environmental Change Science Center, Denver, CO
  • Research Ecologist (Aug. 2008 - Oct. 2012), U.S. Geological Survey, Rocky Mountain Geographic Science Center, Denver, CO
  • Graduate Research Assistant (Sep. 2004 - July 2008), University of Wisconsin, Department of Forest and Wildlife Ecology, Madison, WI
  • Research Intern (Sep. 2003 - Aug. 2004), University of Wisconsin, Department of Forest Ecology & Management, Madison, WI
  • Graduate Research Assistant (Jan. 2001 - Aug. 2003), University of Wisconsin, Department of Forest Ecology & Management, Madison, WI
  • Restoration Ecologist (May 1998 - Dec. 2000), Salix Ecological Resources, Windom, MN
  • Software Engineer & UNIX Systems Administrator (May 1993 - Oct.1997), Engineering Animation Inc., Ames, IA

 

Data Releases:

Hawbaker, T.J., M.K. Vanderhoof, Y.-J. Beal, J.D. Takacs, G.L. Schmidt, J.T. Falgout, B. Williams, N.M. Brunner, M.K. Caldwell, J.J. Picotte, S.M. Howard, S. Stitt, and J.L. Dwyer, 2017. Landsat Burned Area Essential Climate Variable products for the conterminous United States (1984 -2015). U.S. Geological Survey Data Release. [Link]

Vanderhoof, M.K., N.M. Fairaux, Y.-J. Beal, and T.J. Hawbaker, 2017. Data Release for the Validation of the USGS Landsat Burned Area Essential Climate Variable (BAECV) across the conterminous U.S. U.S. Geological Survey Data Release. [Link]
 

 

Publications:

Bright, B.C., A.T. Hudak, A.J. Meddens, T.J. Hawbaker, J.S. Briggs, and R.E. Kennedy, 2017. Prediction of Forest Canopy and Surface Fuels from Lidar and Satellite Time Series Data in a Bark Beetle-Affected Forest. Forests 8. [Link]

Dorning, M.A., S.L. Garman, J.E. Diffendorfer, D.J. Semmens, T.J. Hawbaker, and K.J. Bagstad., 2017. Oil and Gas Development Influences Big-Game Hunting in Wyoming. J. Wildl. Manage. 81, 379–392. [Link]

Hawbaker, T.J., M.K. Vanderhoof, Y.-J. Beal, J.D. Takacs, G.L. Schmidt, J.T. Falgout, B. Williams, N.M. Fairaux, M.K. Caldwell, J.J. Picotte, S.M. Howard, S. Stitt, and J.L. Dwyer, 2017. Mapping burned areas using dense time-series of Landsat data. Remote Sensing of Environment 198, 504–522. [Link]

Sankey, J.B., J. Kreitler, T.J. Hawbaker, J.L. McVay, M.E. Miller, E.R. Mueller, N.M. Vaillant, S.E. Lowe, and T.T. Sankey, 2017. Climate, wildfire, and erosion ensemble foretells more sediment in western USA watersheds. Geophys. Res. Lett. 44. [Link]

Sleeter, R., B.M. Sleeter, B. Williams, D. Hogan, T.J. Hawbaker, and Z. Zhu, 2017. A carbon balance model for the great dismal swamp ecosystem. Carbon Balance and Management 12, 2. [Link]

Vanderhoof, M.K., N.M. Brunner, Y.-J. Beal, and T.J. Hawbaker, 2017. Evaluation of the U.S. Geological Survey Landsat Burned Area Essential Climate Variable across the Conterminous U.S. Using Commercial High-Resolution Imagery. Remote Sensing 9. [Link]

Vanderhoof, M.K., N.M. Fairaux, Y.-J. Beal, and T.J. Hawbaker, 2017. Validation of the USGS Landsat Burned Area Essential Climate Variable (BAECV) across the conterminous United States. Remote Sensing of Environment 198, 393–406. [Link]

Berryman, E., M.G. Ryan, J.B. Bradford, T.J. Hawbaker, and R. Birdsey, 2016. Total belowground carbon flux in subalpine forests is related to leaf area index, soil nitrogen and tree height. Ecosphere v. 7:e01418 [Link]

Caggiano, M.D., W.T. Tinkham, C. Hoffman, A.S. Cheng, and T.J. Hawbaker, 2016. High resolution mapping of development in the wildland-urban interface using object based image extraction. Heliyon 2, e00174. [Link]

Duberstein, J.A., T.J. Hawbaker, G.K. Speiran, Z. Zhu, N. Cormier, and F.C. Wurster. 2016. Quantifying aboveground biomass and carbon sequestration rates in Great Dismal Swamp, Virginia, USA.  Extended abstracts from the 15th International PEAT Congress August 15-19, 2016, Sarawak, Malaysia

Hawbaker, T.J., A. Reddy, Z. Zhu, F.C. Wurster and J.A. Duberstein. 2016. Quantifying above and belowground carbon loss following wildfire in peatlands using repeated lidar measurements. Extended abstracts from the 15th International PEAT Congress August 15-19, 2016, Sarawak, Malaysia

Hawbaker, T.J., C. Trauernicht, S. Howard, C.M. Litton, C.P. Giardina, J.D. Jacobi, L. Fortini, R.F. Hughes, P.C. Selmants, and Z. Zhu. 2016. Wildland fires and greenhouse gas emission in Hawaii, chapter 5 of C.P. Giardina, P.C Selmants, and J.D. Jacobi, eds., An assessment of baseline and projected carbon storage and flux in the Hawaiian Archipelago: U.S. Geological Survey Professional Paper 1834. 134 p. [Link]

Hughes, R.F., G.P. Asner, C.M. Litton, P.C. Selmants, T.J. Hawbaker, J.D. Jacobi, C.P. Giardina, and B.M. Sleeter. 2016. Influence of invasive species on carbon storage in Hawaii’s ecosystems, chapter 4 of C.P. Giardina, P.C Selmants, and J.D. Jacobi, eds., An assessment of baseline and projected carbon storage and flux in the Hawaiian Archipelago: U.S. Geological Survey Professional Paper 1834. 134 p. [Link]

Liang, L., T.J. Hawbaker, Z. Zhu, X. Li, and P. Gong, 2016, Forest disturbance interactions and successional pathways in the Southern Rocky Mountains. Forest Ecology and Management 375:35-45 [Link]

Selmants, P.C., C.P. Giardina, S. Sousan, D.E. Knapp, H.L. Kimball, T.J. Hawbaker, A. Moreno, J. Seirer, S.W. Running, T. Miura, R. Bergstrom, R.F. Hughes, C.M. Litton, and G.P. Asner. 2016. Baseline carbon storage and carbon fluxes in terrestrial ecosystems of Hawaii, chapter 6 of C.P. Giardina, P.C Selmants, and J.D. Jacobi, eds., An assessment of baseline and projected carbon storage and flux in the Hawaiian Archipelago: U.S. Geological Survey Professional Paper 1834. 134 p. [Link]

Sleeter, B.M., J. Liu, C. Daniel, T.J. Hawbaker, T.S. Wilson, L. Fortini, J.D. Jacobi, P.C. Selmants, C.P. Giardina, C.M. Litton, and R.F. Hughes. 2016. Projected Future Carbon storage and carbon fluxes in terrestrial ecosystems of Hawaii from changes in climate, land use and disturbance, chapter 8 of C.P. Giardina, P.C Selmants, and J.D. Jacobi, eds., An assessment of baseline and projected carbon storage and flux in the Hawaiian Archipelago: U.S. Geological Survey Professional Paper 1834. 134 p. [Link]

Briggs, J., T.J. Hawbaker, D. Vandendriesche. 2015. Resilience of ponderosa- and lodgepole pine forests to mountain pine beetle disturbance and limited regeneration. Forest Science 61(4,5):689-702.[Link]

Huang, S., S. Liu, J. Liu, D. Dahal, C. Young, B. Davis, T. Sohl, T. Hawbaker, B. Sleeter, and Z. Zhu. 2015. Projecting the spatiotemporal carbon dynamics of the Greater Yellowstone Ecosystem from 2006 to 2050. Carbon Balance and Management 10:7 [Link]

Liu, Z., M.C. Wimberly, A. Lamsal, T.L. Sohl, and T.J. Hawbaker. 2015. Climate change and wildfire risk in an expanding wildland-urban interface: a case study from the Colorado Front Range Corridor. Landscape Ecology 30:1943-1957 [Link]

Reddy, A.D., T.J. Hawbaker, F. Wurster, Z. Zhu, S. Ward, D. Newcomb, and R. Murray, 2015, Quantifying soil carbon loss and uncertainty from a peatland wildfire using multi-temporal LiDAR: Remote Sensing of Environment, v. 170, p. 306-316. [Link]

Liang, L., Y. Chen, T.J. Hawbaker, Z. Zhu, and P. Gong. 2014. Mapping Mountain Pine Beetle Mortality through Growth Trend Analysis of Time-Series Landsat Data. Remote Sensing 6:5696-5716; doi:10.3390/rs6065696 [Link]

Liang, L., T.J. Hawbaker, Y. Chen, Z. Zhu, and P. Gong. 2014. Characterizing recent and projecting future potential patterns of mountain pine beetle outbreaks in the Southern Rocky Mountains. Applied Geography 55:165-175, doi:10.1016/j.apgeog.2014.09.012 [Link]

Hawbaker, T. and Z. Zhu, 2014, Wildland Fire Occurrence and Emissions in the Eastern United States from 2001 through 2050, chapter 4 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Eastern United States: U.S. Geological Survey Professional Paper 1804. 204 p. [Link]

Zhu, Z., B. Sleeter, R. Reker, T. Hawbaker, S. Stackpoole, B. Bergamaschi, and S. Liu, 2014, Executive Summary of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Eastern United States: U.S. Geological Survey Professional Paper 1804. 204 p. [Link]

Zhu, Z., B. Sleeter, R. Reker, T. Hawbaker, S. Stackpoole, B. Bergamaschi, and S. Liu, 2014, Executive Summary of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Eastern United States: U.S. Geological Survey Professional Paper 1804. 204 p. [Link]

Zhu, Z., B. Sleeter, T. Sohl, T. Hawbaker, S. Liu, S. Stackpoole, and B. Bergamaschi, 2014, Scope, Methodology, and Current Knowledge, chapter 1 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Eastern United States: U.S. Geological Survey Professional Paper 1804. 204 p. [Link]

Prestemon, J.P., T.J. Hawbaker, M. Bowden, J. Carpenter, M.T. Brooks, K.L. Abt, R. Sutphen, A. Kole Berriochoa, and S. Scranton. 2013. Wildfire ignitions: A brief review of the science and recommendations for empirical modeling. General Technical Report-SRS-171. Asheville, NC, U.S. Department of Agriculture Forest Service, Southern Research Station, 20 p. [Link]

Hawbaker, T.J., V.C. Radeloff, S.I. Stewart, R.B. Hammer, N.S. Keuler, and M.K. Clayton. 2013. Human and biophysical influences on fire occurrence in the United States. Ecological Applications. 23(3): 565-582. [Link]

Caldwell, M.E., T.J. Hawbaker, J.S. Briggs, P.W. Cigan, and S. Stitt. 2013. Simulated impacts of mountain pine beetle and wildfire disturbances on forest vegetation composition and carbon stocks in the Southern Rocky Mountains. Biogeosciences 10:8203-8222, doi:10.5194/bg-10-8203-2013 [Link]

Sohl, T.L., B.M. Sleeter, Z. Zhu, K.L. Sayler, S. Bennett, M. Bouchard, R. Reker, T. Hawbaker, A. Wein, S. Liu, R. Kanengieter, W. Acevedo. 2012. A land-use and land-cover modeling strategy to support a national assessment of carbon stocks and fluxes. Applied Geography 34: 111-124. [Link]

Bar Massada, A., T. J. Hawbaker, V. C. Radeloff, and S. I Stewart. 2012. Using MODIS Active Fire and National Lightning Detection Network data to identify spatiotemporal patterns of large lightning fires in the conterminous United States, 2000 – 2008. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 99: 1-10. [Link]

Zhu, Z., B. Sleeter, G. Griffith, S. Stackpoole, T. Hawbaker, and B. Bergamaschi, 2012, Executive Summary of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Zhu, Z., B. Sleeter, G. Griffith, S. Stackpoole, T. Hawbaker, and B. Bergamaschi, 2012, Introduction to Scope, Methodology, and Ecosystems of the Assessment, chapter 1. of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Hawbaker, T., and Z. Zhu, 2012, Baseline wildland fires and emissions for the Western United States, chapter 3 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs.gov/pp/1797[Link]

Liu, S., J. Liu, C. Young, J. Werner, Y. Wu, Z. Li, D. Dahal, J. Oeding, G. Schmidt, T. Sohl, T. Hawbaker, and B. Sleeter, 2012, Baseline Carbon Storage, Sequestration and Greenhouse Gas Fluxes of Terrestrial Ecosystems in the Western United States, chapter 5 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Wein, A., T. Hawbaker, R. Champion, J. Ratliff, B. Sleeter, and Z. Zhu, 2012, Climate projections used for the assessment of the Western United States, chapter 7 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Hawbaker, T., and Z. Zhu, 2012, Projected future wildland fires and emissions for the Western United States, chapter 8 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Liu, S., Y. Wu, C. Young, D. Dahal, J. Werner, J. Liu, Z. Li, Z. Tan, G. Schmidt, T. Sohl, T. Hawbaker, and B. Sleeter, 2012, Projected Future Carbon Storage and Greenhouse Gas Fluxes of Terrestrial Ecosystems in the Western United States, chapter 9 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Liu, S., Z. Zhu, T. Sohl, T. Hawbaker, B. Sleeter, S. Stackpoole, and R. Smith, 2012, Toward an Integrated Assessment: Further Analyses and Observations, chapter 12 of Z. Zhu and B. Reed, eds., Baseline and projected future carbon storage and greenhouse-gas fluxes in ecosystems of the Western United States: U.S. Geological Survey Professional Paper 1797. 192 p. (Also available at http://pubs.usgs/gov/pp/1797[Link]

Bar Massada, A., A.D. Syphard, V.C. Radeloff, T.J. Hawbaker, and S.I. Stewart. 2011. Effects of ignition location models on the burn patterns of simulated wildfires. Environmental Modeling and Software,26:583-592. [Link]

Gimmi, U., S.L. Schmidt, T.J. Hawbaker, C. Alcàntara, U. Gafvert, and V.C. Radeloff. 2011Road development, building growth, and related fragmentation effects in and around U.S. National Park Service holdings: indicators for the effectiveness of protected areas. Journal of Environmental Management, 92:229-239. [Link]

Lesak, A.A., V.C. Radeloff, T.J. Hawbaker, A.M. Pidgeon, T. Gobakken, and K. Contrucci. 2011. Modeling forest songbird species richness using LiDAR-derived forest structure. Remote Sensing of Environment, 115(11):2823-2835. [Link]

Zhu, Z. (ed), M. Bouchard, D. Butman, T. Hawbaker, Z. Li, J. Liu, S. Liu, C. McDonald, R. Reker, K. Sayler, B. Sleeter, T. Sohl, S. Stackpoole, A. Wein, and Z. Zhu. 2011. Baseline and Projected Future Carbon Storage and Greenhouse-Gas Fluxes in the Great Plains Region of the United States. U.S. Geological Survey Profession Paper 1787, 28p. [Link]

Freitas, S.R., T.J. Hawbaker, and J.P. Metzger, 2010. Effects of roads, topography, and land use on forest cover dynamics in the Brazilian Atlantic Forest. Forest Ecology and Management, 259:410-417.[Link]

Hawbaker, T.J., T. Gobakken, A. Lesak, E. Trømborg, K. Contrucci, and V.C. Radeloff. 2010. LIDAR-based forest inventory of uneven-aged mixed hardwood forests. Forest Science, 56:313-326. [Link]

Radeloff, V.C., S.I. Stewart, T.J. Hawbaker, U. Gimmi, A. Pidgeon, C. Flather, R.B. Hammer, and D. Helmers. 2010. Housing growth in and near United States’ protected areas limits their conservation value. Proceedings of the National Academy of Sciences, 259:410-417. [Link]

Zhu, Z., ed., B. Bergamaschi, R. Bernknopf, D. Clow, D. Dye, S. Faulkner, W. Forney, R. Gleason, T. Hawbaker, J. Liu, S. Liu, S. Prisley, B. Reed, M. Reeves, M. Rollins, B. Sleeter, T. Sohl, S. Stackpoole, S. Stehman, R. Striegl, A. Wein, and Z. Zhu. 2010, Public review draft; A method for assessing carbon stocks, carbon sequestration, and greenhouse-gas fluxes in ecosystems of the United States under present conditions and future scenarios: U.S. Geological Survey Open-File Report 2010–1144, 195 p. [Link]

Hawbaker, T.J., N. Keuler, A. Lesak, T. Gobakken, K. Contrucci, and V.C. Radeloff. 2009. Improved estimates of forest vegetation structure and biomass with a LiDAR-optimized sampling design. Journal of Geophysical Research, 114. [Link]

Bar Massada, A., V.C. Radeloff, S.I. Stewart, and T.J. Hawbaker. 2009. Wildfire risk in the wildland-urban interface: a simulation study in northwestern Wisconsin. Forest Ecology and Management, 258:1990-1999. [Link]

Rogers, D.A., T.P. Rooney, T.J. Hawbaker, V.C. Radeloff, D.M. Waller. 2009Paying the extinction debt and the weakening of the biotic-environmental relationship in southern Wisconsin forests.Conservation Biology 22:1497-1506. [Link]

Hammer, R.B., V.C. Radeloff, S.I. Stewart, and T.J. Hawbaker2009. Housing growth, forests, and public lands in northern Wisconsin from 1940 to 2000. Journal of Environmental Management 90:2690-2698 [Link]

Syphard, A.D., V.C. Radeloff, T.J. Hawbaker, S.I. Stewart. 2009. Conservation threats due to human-caused increases in fire frequency in Mediterranean-climate ecosystems. Conservation Biology23:758-769. [Link]

Stewart, S.I., B. Wilmer, R.B. Hammer, G.H. Aplet, T.J. Hawbaker, C. Miller, and V.C. Radeloff. 2009. Wildland-Urban Interface maps vary with purpose and context. Journal of Forestry 107:78-83. [Link]

Hawbaker, T.J., V.C. Radeloff, A.D. Syphard, Z. Zhu, and S.I. Stewart. 2008. Detection rates of the MODIS active fire product. Remote Sensing of Environment 112:2656-2664. [Link]

Syphard, A.D., V.C. Radeloff, N.S. Keuler, R.S. Taylor, T.J. Hawbaker, S.I. Stewart, and M.K. Clayton. 2008. Predicting spatial patterns of fire in a southern California landscape. International Journal of Wildland Fire 17: 602-613. [Link]

Gonzalez-Abraham, C.E., V.C. Radeloff, R.B. Hammer, T.J. Hawbaker, S.I. Stewart, and M.K. Clayton. 2007. Building density and landscape pattern from 1938 to 1998 in northern Wisconsin, USA.Ecological Applications 17:2911-2023. [Link]

Pidgeon, A.M., V.C. Radeloff, C.H. Flather, M.K. Clayton, C.A. Lepczyk, T.J. Hawbaker, and R.B. Hammer. 2007. The effects of housing density and landscape patterns on bird species richness across the United States. Ecological Applications 17:1989-2010. [Link]

Stewart, S.I., V.C. Radeloff, R.B. Hammer, and T.J. Hawbaker. 2007. Defining the Wildland Urban Interface. Journal of Forestry 105:201-207. [Link]

Gonzalez-Abraham, C.E., V.C. Radeloff, R.B. Hammer, T.J. Hawbaker, S.I. Stewart, and M.K. Clayton. 2007. Effects of building density, landownership, and land cover on landscape fragmentation in northern Wisconsin, USA. Landscape Ecology 22:217-230. [Link]

Syphard, A.D., V.C. Radeloff, J.E. Keeley, T.J. Hawbaker, M.K. Clayton, S.I. Stewart, and R. B. Hammer. 2007. Human influence on California fire regimes. Ecological Applications 17:1388-1402[Link]

St-Louis, V., A.M. Pidgeon, V.C. Radeloff, T.J. Hawbaker, M.K. Clayton. 2006High-resolution image textures as predictors of bird species richness. Remote Sensing of Environment 105:299-312. [Link]

Hawbaker, T.J., V.C. Radeloff, C.E. Gonzalez-Abraham, R.B. Hammer, and M.K. Clayton. 2006. Changes in the road network, relationships with housing development, and the effects on landscape pattern in northern Wisconsin: 1937 to 1999. Ecological Applications 16: 1222-1237 [Link]

Hawbaker, T.J., V.C. Radeloff, R.B. Hammer, and M.K. Clayton. 2005. Road density and landscape pattern in relation to housing density, land ownership, land cover, and soils. Landscape Ecology 20:609-625. [Link]

Hawbaker, T.J. and V.C. Radeloff. 2004. Road and landscape pattern in northern Wisconsin based on a comparison of four road data sources. Conservation Biology 18:1233-1244. [Link]