Current Research

I recently completed a landscape-level forest biomass and carbon sequestration assessment using repeat field and lidar surveys. Now I am expanding the scope of this work to examine relationships between forest canopy structure, wildlife habitat and biodiversity, and coupled carbon and water cycles. My collaborators and I are working to improve LiDAR data analysis capabilities for vegetation applications. I also work with other fire scientists to relate postfire effects to prefire fuels and active fire behavior on prescribed fires, where it's safe and logistically feasible to measure these variables before, during, and after the fire. An improved fundamental understanding of fire as a process will advance fire science and help fire managers make better decisions. I also study the effectiveness of fuel treatments for mitigating wildfire severity.

Research Interests

My research interests include landscape, vegetation, and fire ecology; remote sensing of vegetation patterns and processes; forest and rangeland ecology and management; empirical modeling of spatially explicit ecological data.

Past Research

My PhD research examined the ecological causes and consequences of historic bush encroachment in South African savannas. I retain an active interest in savanna fire ecology and the relationship between vegetation pattern and fire process in both forest and rangeland ecosystems.

Why This Research is Important

Forest managers need better tools and information on forest biomass and carbon sequestration. Fuel and fire managers need better information on how best to manipulate forest fuels to mitigate the risk of severe fire and to cope with severe fire effects. Airborne and satellite remote sensing in combination with appropriately sampled ground data can provide this needed information in the form of maps.

Education

• University of Colorado, Ph.D. Environmental, Population, and Organismic Biology 1999
• University of Minnesota, B.S. Ecology, Evolution, and Behavior 1990
• Itasca Community College, A.A. Liberal Arts 1987

Professional Experience

Awards & Recognition

Featured Publications & Products

• Lewis, Sarah A.; Hudak, Andrew T.; Ottmar, Roger D.; Robichaud, Peter R.; Lentile, Leigh B.; Hood, Sharon M.; Cronan, James B.; Morgan, Penny. 2011. Using hyperspectral imagery to estimate forest floor consumption from wildfire in boreal forests of Alaska, USA.
• Hudak, Andrew T.; Rickert, Ian; Morgan, Penelope; Strand, Eva; Lewis, Sarah A.; Robichaud, Peter R.; Hoffman, Chad; Holden, Zachary A. 2011. Review of fuel treatment effectiveness in forests and rangelands and a case study from the 2007 megafires in central, Idaho, USA.
• Tinkham, Wade T.; Huang, Hongyu; Smith, Alistair M.S.; Shrestha, Rupesh; Falkowski, Michael J.; Hudak, Andrew T.; Link, Timothy E.; Glenn, Nancy F.; Marks, Danny G. 2011. A comparison of two open source LiDAR surface classification algorithms.
• Hummel, Susan; Hudak, A. T.; Uebler, E. H.; Falkowski, M. J.; Megown, K. A. 2011. A comparison of accuracy and cost of LiDAR versus stand exam data for landscape management on the Malheur National Forest.
• Smith, Alistair M. S.; Eitel, Jan U. H.; Hudak, Andrew T. 2010. Spectral analysis of charcoal on soils: Implications for wildland fire severity mapping methods.

Publications

• Martinez, Anthony ; Meddens, Arjan ; Kolden, Crystal ; Hudak, Andrew . 2019. An assessment of fire refugia importance criteria ranked by land managers.
• Warwell, Marcus V; McDonald, Geral I; Hanna, John W.; Kim, Mee-Sook ; Lalande, Bradley M.; Stewart, Jane E.; Hudak, Andrew T.; Klopfenstein, Ned B. 2019. Armillaria altimontana is associated with healthy western white pine (Pinus monticola): Potential in situ biological control of the Armillaria root disease pathogen, A.
• Martinez, Anthony J.; Meddens, Arjan J. H.; Kolden, Crystal A.; Strand, Eva K.; Hudak, Andrew T. 2019. Characterizing persistent unburned islands within the Inland Northwest USA.
• Mauro, Francisco ; Ritchie, Martin ; Wing, Brian ; Frank, Bryce ; Monleon, Vicente ; Temesgen, Hailemariam ; Hudak, Andrew . 2019. Estimation of changes of forest structural attributes at three different spatial aggregation levels in Northern California using multitemporal LiDAR.
• Bright, Benjamin C.; Hudak, Andrew T.; Kennedy, Robert E.; Braaten, Justin D.; Khalyani, Azad Henareh. 2019. Examining post-fire vegetation recovery with Landsat time series analysis in three western North American forest types.
• Liu, Yongqiang ; Kochanski, Adam ; Baker, Kirk R.; Mell, William ; Linn, Rodman ; Paugam, Ronan ; Mandel, Jan ; Fournier, Aime ; Jenkins, Mary Ann; Goodrick, Scott ; Achtemeier, Gary ; Zhao, Fengjun ; Ottmar, Roger ; French, Nancy H. F.; Larkin, Narasimhan ; Brown, Timothy ; Hudak, Andrew ; Dickinson, Matthew ; Potter, Brian ; Clements, Craig ; Urbanski, Shawn ; Prichard, Susan ; Watts, Adam ; McNamara, Derek . 2019. Fire behaviour and smoke modelling: model improvement and measurement needs for next-generation smoke research and forecasting systems.
• Smith, April G.; Newingham, Beth A.; Hudak, Andrew T.; Bright, Benjamin C. 2019. Got shrubs Precipitation mediates long-term shrub and introduced grass dynamics in chaparral communities after fire.
• Dickinson, Matthew B.; Butler, Bret W.; Hudak, Andrew T.; Bright, Benjamin C.; Kremens, Robert L.; Klauberg, Carine . 2019. Inferring energy incident on sensors in low-intensity surface fires from remotely sensed radiation and using it to predict tree stem injury.
• Dell, Jane E.; Pokswinski, Scott M.; Richards, Lora A.; Hiers, J. Kevin; Williams, Brett ; O’Brien, Joseph J.; Loudermilk, E. Louise; Hudak, Andrew T.; Dyer, Lee A. 2019. Maximizing the monitoring of diversity for management activities: Additive partitioning of plant species diversity across a frequently burned ecosystem.
• Kato, Akira ; Moskal, L. Monika; Batchelor, Jonathan L.; Thau, David ; Hudak, Andrew T. 2019. Relationships between satellite-based spectral burned ratios and terrestrial laser scanning.
• Prichard, Susan ; Larkin, N. ; Ottmar, Roger ; French, Nancy ; Baker, Kirk ; Brown, Tim ; Clements, Craig ; Dickinson, Matt ; Hudak, Andrew ; Kochanski, Adam ; Linn, Rod ; Liu, Yongqiang ; Potter, Brian ; Mell, William ; Tanzer, Danielle ; Urbanski, Shawn ; Watts, Adam . 2019. The Fire and Smoke Model Evaluation Experiment - A plan for integrated, large fire-atmosphere field campaigns.
• Steady, Wade D.; Feltrin, Raquel Partelli; Johnson, Daniel M.; Sparks, Aaron M.; Kolden, Crystal A.; Talhelm, Alan F.; Lutz, James A.; Boschetti, Luigi ; Hudak, Andrew T.; Nelson, Andrew S.; Smith, Alistair M. S. 2019. The survival of Pinus ponderosa saplings subjected to increasing levels of fire behavior and impacts on post fire growth.
• Weise, David R.; Fletcher, Thomas H.; Johnson, Timothy J.; Hao, WeiMin ; Dietenberger, Mark ; Princevac, Marko ; Butler, Bret ; McAllister, Sara ; O’Brien, Joseph ; Loudermilk, Louise ; Ottmar, Roger ; Hudak, Andrew ; Kato, Akira ; Shotorban, Babak ; Mahalingam, Shankar ; Mell, William E. 2018. A project to measure and model pyrolysis to improve prediction of prescribed fire behavior Chapter 3.
• Tinkham, Wade T.; Mahoney, Patrick R.; Hudak, Andrew T.; Domke, Grant M.; Falkowski, Mike J.; Woodall, Chris W.; Smith, Alistair M. S. 2018. Applications of the United States Forest Inventory and Analysis dataset: A review and future directions.
• Silva, Carlos Alberto; Saatchi, Sassan ; Garcia, Mariano ; Labriere, Nicolas ; Klauberg, Carine ; Ferraz, Antonio ; Meyer, Victoria ; Jeffery, Kathryn J.; Abernethy, Katharine ; White, Lee ; Zhao, Kaiguang ; Lewis, Simon L.; Hudak, Andrew T. 2018. Comparison of small- and large-footprint lidar characterization of tropical forest aboveground structure and biomass: A case study from Central Gabon.
• Wei, Liang ; Zhou, Hang ; Link, Timothy E.; Kavanagh, Kathleen L.; Hubbart, Jason A.; Du, Enhao ; Hudak, Andrew T.; Marshall, John D. 2018. Forest productivity varies with soil moisture more than temperature in a small montane watershed.
• Smith, Alistair M. S.; Lutz, James A.; Hoffman, Chad M.; Williamson, Grant J.; Hudak, Andrew T. 2018. Preface: Special issue on wildland fires.
• Campbell, Michael J.; Dennison, Philip E.; Hudak, Andrew T.; Parham, Lucy M.; Butler, Bret W. 2018. Quantifying understory vegetation density using small-footprint airborne lidar.
• Sanchez-Lopez, Nuria ; Boschetti, Luigi ; Hudak, Andrew T. 2018. Semi-automated delineation of stands in an even-age dominated forest: A LiDAR-GEOBIA two-stage evaluation strategy.
• Meddens, Arjan J. H.; Kolden, Crystal A.; Lutz, James A.; Abatzoglou, John T.; Hudak, Andrew T. 2018. Spatiotemporal patterns of unburned areas within fire perimeters in the northwestern United States from 1984 to 2014.
• Huo, Lian-Zhi ; Silva, Carlos Alberto; Klauberg, Carine ; Mohan, Midhun ; Zhao, Li-Jun ; Tang, Ping ; Hudak, Andrew Thomas. 2018. Supervised spatial classification of multispectral LiDAR data in urban areas.
• Bae, Soyeon ; Muller, Jorg ; Lee, Dowon ; Vierling, Kerri T.; Vogeler, Jody C.; Vierling, Lee A.; Hudak, Andrew T.; Latifi, Hooman ; Thorn, Simon . 2018. Taxonomic, functional, and phylogenetic diversity of bird assemblages are oppositely associated to productivity and heterogeneity in temperate forests.
• Hudak, Andrew T.; Freeborn, Patrick H.; Lewis, Sarah A.; Hood, Sharon M.; Smith, Helen Y.; Hardy, Colin C.; Kremens, Robert J.; Butler, Bret W.; Teske, Casey; Tissell, Robert G.; Queen, Lloyd P.; Nordgren, Bryce L.; Bright, Benjamin C.; Morgan, Penelope; Riggan, Philip J.; Macholz, Lee; Lentile, Leigh B.; Riddering, James P.; Mathews, Edward E. 2018. The Cooney Ridge Fire Experiment: An early operation to relate pre-, active, and post-fire field and remotely sensed measurements.
• Fekety, Patrick A.; Falkowski, Michael J.; Hudak, Andrew T.; Jain, Theresa B.; Evans, Jeffrey S. 2018. Transferability of lidar-derived basal area and stem density models within a northern Idaho ecoregion.
• Klauberg, C. ; Hudak, A. T.; Bright, B. C.; Boschetti, L. ; Dickinson, M. B.; Kremens, R. L.; Silva, C. A. 2018. Use of ordinary kriging and Gaussian conditional simulation to interpolate airborne fire radiative energy density estimates Corrigendum.
• Silva, Carlos Alberto; Hudak, Andrew Thomas; Klauberg, Carine; Vierling, Lee Alexandre; Gonzalez‑Benecke, Carlos; Carvalho, Samuel de Padua Chaves; Rodriguez, Luiz Carlos Estraviz; Cardil, Adrian. 2017. Combined effect of pulse density and grid cell size on predicting and mapping aboveground carbon in fast growing Eucalyptus forest plantation using airborne LiDAR data.
• Liu, Yongqiang; Kochanski, Adam; Baker, Kirk; Mell, Ruddy; Linn, Rodman; Paugam, Ronan; Mandel, Jan; Fournier, Aime; Jenkins, Mary Ann; Goodrick, Scott; Achtemeier, Gary; Hudak, Andrew; Dickson, Matthew; Potter, Brian; Clements, Craig; Urbanski, Shawn; Ottmar, Roger; Larkin, Narasimhan; Brown, Timothy; French, Nancy; Prichard, Susan; Watts, Adam; McNamara, Derek. 2017. Fire and Smoke Model Evaluation Experiment (FASMEE): Modeling gaps and data needs.
• Silva, Carlos Alberto; Hudak, Andrew Thomas; Vierling, Lee Alexander; Klauberg, Carine; Garcia, Mariano; Ferraz, Antonio; Keller, Michael; Eitel, Jan; Saatchi, Sassan. 2017. Impacts of airborne lidar pulse density on estimating biomass stocks and changes in a selectively logged tropical forest.
• Lewis, Sarah A.; Hudak, Andrew T.; Robichaud, Peter R.; Morgan, Penelope; Satterberg, Kevin L.; Strand, Eva K.; Smith, Alistair M. S.; Zamudio, Joseph A.; Lentile, Leigh B. 2017. Indicators of burn severity at extended temporal scales: a decade of ecosystem response in mixed-conifer forests of western Montana.
• Mohan, Midhun; Silva, Carlos Alberto; Klauberg, Carine; Jat, Prahlad; Catts, Glenn; Cardil, Adrian; Hudak, Andrew Thomas; Dia, Mahendra. 2017. Individual tree detection from Unmanned Aerial Vehicle (UAV) derived canopy height model in an open canopy mixed conifer forest.
• McCarley, T. Ryan; Kolden, Crystal A.; Vaillant, Nicole M.; Hudak, Andrew T.; Smith, Alistair M. S.; Kreitler, Jason. 2017. Landscape-scale quantification of fire-induced change in canopy cover following mountain pine beetle outbreak and timber harvest.
• Silva, Carlos A.; Klauberg, Carine ; Hudak, Andrew T.; Vierling, Lee A.; Fennema, Scott J.; Corte, Ana Paula D. 2017. Modeling and mapping basal area of Pinus taeda L. plantation using airborne LiDAR data.
• McCarley, T. Ryan; Kolden, Crystal A.; Vaillant, Nicole M.; Hudak, Andrew T.; Smith, Alistair M. S.; Wing, Brian M.; Kellogg, Bryce S.; Kreitler, Jason. 2017. Multi-temporal LiDAR and Landsat quantification of fire-induced changes to forest structure.
• Morgan, Penelope; Hudak, Andrew T.; Wells, Ashley; Parks, Sean A.; Baggett, L. Scott; Bright, Benjamin C.; Green, Patricia. 2017. Multidecadal trends in area burned with high severity in the Selway-Bitterroot Wilderness Area 1880-2012.
• Dell, Jane E.; Richards, Lora A.; O’Brien, Joseph J.; Loudermilk, E. Louise; Hudak, Andrew T.; Pokswinski, Scott M.; Bright, Benjamin C.; Hiers, J. Kevin; Williams, Brett W.; Dyer, Lee A. 2017. Overstory-derived surface fuels mediate plant species diversity in frequently burned longleaf pine forests.
• Silva, Carlos Alberto; Klauberg, Carine; Hudak, Andrew Thomas; Vierling, Lee Alexander; Jaafar, Wan Shafrina Wan Mohd; Mohan, Midhun; Garcia, Mariano; Ferraz, Antonio; Cardil, Adrian; Saatchi, Sassan. 2017. Predicting stem total and assortment volumes in an industrial Pinus taeda L. forest plantation using airborne laser scanning data and random forest.
• Bright, Benjamin C.; Hudak, Andrew T.; Meddens, Arjan J. H.; Hawbaker, Todd J.; Briggs, Jennifer S.; Kennedy, Robert E. 2017. Prediction of forest canopy and surface fuels from lidar and satellite time series data in a bark beetle-affected forest.
• Swift, Charles E.; Vierling, Kerri T.; Hudak, Andrew T.; Vierling, Lee A. 2017. Relationships among vegetation structure, canopy composition, and avian richness patterns across an aspen-conifer forest gradient.
• Klauberg, Carine; Vidal, Edson; Silva, Carlos Alberto; Hudak, Andrew Thomas; Oliveira, Manuela; Higuchi, Pedro. 2017. Short-term effects of reduced-impact logging on Copaifera spp. (Fabaceae) regeneration in eastern Amazon.
• Silva, Carlos Alberto; Klauberg, Carine; Hudak, Andrew T.; Vierling, Lee A.; Liesenberg, Veraldo; Carvalho, Samuel P. C. e; Rodriguez, Luiz C. E. 2016. A principal component approach for predicting the stem volume in Eucalyptus plantations in Brazil using airborne LiDAR data.
• O'Brien, Joseph J.; Loudermilk, E. Louise; Hiers, J. Kevin; Pokswinski, Scott; Hornsby, Benjamin; Hudak, Andrew; Strother, Dexter; Rowell, Eric; Bright, Benjamin C. 2016. Canopy-derived fuels drive patterns of in-fire energy release and understory plant mortality in a longleaf pine ( Pinus palustris ) sandhill in northwest Florida, USA.
• Tinkham, Wade T.; Smith, Alistair M. S.; Affleck, David L. R.; Saralecos, Jarred D.; Falkowski, Michael J.; Hoffman, Chad M.; Hudak, Andrew T.; Wulder, Michael A. 2016. Development of height-volume relationships in second growth Abies grandis for use with aerial LiDAR.
• Beckley, Carl S.; Shaban, Salisu; Palmer, Guy H.; Hudak, Andrew T.; Noh, Susan M.; Futse, James E. 2016. Disaggregating tropical disease prevalence by climatic and vegetative zones within tropical west Africa.
• Ross-Davis, Amy; Stewart, Jane E.; Settles, Matt; Hanna, John W.; Shaw, John D.; Hudak, Andrew T.; Page-Dumroese, Deborah S.; Klopfenstein, Ned B. 2016. Fine-scale variability of forest soil fungal communities in two contrasting habitat series in northern Idaho, USA identified with microbial metagenomics.
• Clements, Craig B.; Lareau, Neil P.; Seto, Daisuke; Contezac, Jonathan; Davis, Braniff; Teske, Casey; Zajkowski, Thomas J.; Hudak, Andrew T.; Bright, Benjamin C.; Dickinson, Matthew B.; Butler, Bret W.; Jimenez, Daniel; Hiers, J. Kevin. 2016. Fire weather conditions and fire-atmosphere interactions observed during low-intensity prescribed fires - RxCADRE 2012.
• O’Brien, Joseph J.; Loudermilk, E. Louise; Hornsby, Benjamin; Hudak, Andrew T.; Bright, Benjamin C.; Dickinson, Matthew B.; Hiers, J. Kevin; Teske, Casey; Ottmar, Roger D. 2016. High-resolution infrared thermography for capturing wildland fire behaviour - RxCADRE 2012.
• Silva, Carlos A.; Hudak, Andrew T.; Vierling, Lee A.; Loudermilk, E. Louise; O'Brien, Joseph J.; Hiers, J. Kevin; Jack, Steve B.; Gonzalez-Benecke, Carlos; Lee, Heezin; Falkowski, Michael J.; Khosravipour, Anahita. 2016. Imputation of individual longleaf pine (Pinus palustris Mill.) tree attributes from field and LiDAR data.
• Bright, Benjamin C.; Loudermilk, E. Louise; Pokswinski, Scott M.; Hudak, Andrew T.; O'Brien, Joseph J. 2016. Introducing close-range photogrammetry for characterizing forest understory plant diversity and surface fuel structure at fine scales.
• Hudak, Andrew T.; Loudermilk, E. Louise; White, Joanne C. 2016. Introduction to special issue on remote sensing for advanced forest inventory.
• Mathews, Bill J.; Strand, Eva K.; Smith, Alistair M. S.; Hudak, Andrew T.; Dickinson, Matthew B.; Kremens, Robert L. 2016. Laboratory experiments to estimate interception of infrared radiation by tree canopies.
• Hudak, Andrew T.; Bright, Benjamin C.; Pokswinski, Scott M.; Loudermilk, E. Louise; O'Brien, Joseph J.; Hornsby, Benjamin S.; Klauberg, Carine; Silva, Carlos A. 2016. Mapping forest structure and composition from low-density LiDAR for informed forest, fuel, and fire management at Eglin Air Force Base, Florida, USA.
• Hudak, Andrew T.; Dickinson, Matthew B.; Bright, Benjamin C.; Kremens, Robert L.; Loudermilk, E. Louise; O'Brien, Joseph J.; Hornsby, Benjamin S.; Ottmar, Roger D. 2016. Measurements relating fire radiative energy density and surface fuel consumption - RxCADRE 2011 and 2012.
• Ottmar, Roger D.; Hiers, J. Kevin; Butler, Bret W.; Clements, Craig B.; Dickinson, Matthew B.; Hudak, Andrew T.; O'Brien, Joseph; Potter, Brian E.; Rowell, Eric M.; Strand, Tara M.; Zajkowski, Thomas J. 2016. Measurements, datasets and preliminary results from the RxCADRE project-2008, 2011 and 2012.
• Dickinson, Matthew B.; Hudak, Andrew T.; Zajkowski, Thomas; Loudermilk, E. Louise; Schroeder, Wilfrid; Ellison, Luke; Kremens, Robert L.; Holley, William; Martinez, Otto; Paxton, Alexander; Bright, Benjamin C.; O'Brien, Joseph; Hornsby, Ben; Ichoku, Charles; Faulring, Jason; Gerace, Aaron; Peterson, David; Mauceri, Joseph. 2016. Measuring radiant emissions from entire prescribed fires with ground, airborne and satellite sensors - RxCADRE 2012.
• Deo, Ram Kumar; Froese, Robert E.; Falkowski, Michael J.; Hudak, Andrew T. 2016. Optimizing variable radius plot size and LiDAR resolution to model standing volume in conifer forests.
• Ottmar, Roger D.; Hudak, Andrew T.; Prichard, Susan J.; Wright, Clinton S.; Restaino, Joseph C.; Kennedy, Maureen C.; Vihnanek, Robert E. 2016. Pre-fire and post-fire surface fuel and cover measurements collected in the southeastern United States for model evaluation and development - RxCADRE 2008, 2011 and 2012.
• Klauberg, Carine; Vidal, Edson; Silva, Carlos Alberto; Bentes, Michelliny de M.; Hudak, Andrew Thomas. 2016. Sampling methods for titica vine (Heteropsis spp.) inventory in a tropical forest.
• Wei, Liang; Link, Timothy E.; Hudak, Andrew T.; Marshall, John D.; Kavanagh, Kathleen L.; Abatzoglou, John T.; Zhou, Hang; Pangle, Robert E.; Flerchinger, Gerald N. 2016. Simulated water budget of a small forested watershed in the continental/maritime hydroclimatic region of the United States.
• Smith, Alistair M. S.; Kolden, Crystal A.; Paveglio, Travis B.; Cochrane, Mark A.; Bowman, David MJS; Moritz, Max A.; Kliskey, Andrew D.; Alessa, Lilian; Hudak, Andrew T.; Hoffman, Chad M.; Lutz, James A.; Queen, Lloyd P.; Goetz, Scott J.; Higuera, Philip E.; Boschetti, Luigi; Flannigan, Mike; Yedinak, Kara M.; Watts, Adam C.; Strand, Eva K.; van Wagtendonk, Jan W.; Anderson, John W.; Stocks, Brian J.; Abatzoglou, John T. 2016. The science of firescapes: Achieving fire-resilient communities.
• Hyde, Josh; Strand, Eva K.; Hudak, Andrew T.; Hamilton, Dale. 2015. A case study comparison of landfire fuel loading and emissions generation on a mixed conifer forest in northern Idaho, USA.
• Holbrook, Joseph D.; Vierling, Kerri T.; Vierling, Lee A.; Hudak, Andrew T.; Adam, Patrick. 2015. Occupancy of red-naped sapsuckers in a coniferous forest: Using LiDAR to understand effects of vegetation structure and disturbance.
• Fekety, Patrick A.; Falkowski, Michael J.; Hudak, Andrew T. 2015. Temporal transferability of LiDAR-based imputation of forest structure attributes.
• Ross-Davis, Amy; Settles, Matt; Hanna, John W.; Shaw, John D.; Hudak, Andrew T.; Page-Dumroese, Deborah S.; Klopfenstein, Ned B. 2015. Using a metagenomic approach to improve our understanding of Armillaria root disease.
• Morgan, Penelope; Moy, Marshell; Droske, Christine A.; Lewis, Sarah A.; Lentile, Leigh B.; Robichaud, Peter R.; Hudak, Andrew T.; Williams, Christopher J. 2015. Vegetation response to burn severity, native grass seeding, and salvage logging.
• Birch, Donovan S.; Morgan, Penelope; Kolden, Crystal A.; Abatzoglou, John T.; Dillon, Gregory K.; Hudak, Andrew T.; Smith, Alistair M. S. 2015. Vegetation, topography and daily weather influenced burn severity in central Idaho and western Montana forests.
• Morgan, Penelope; Keane, Robert E.; Dillon, Gregory K.; Jain, Theresa B.; Hudak, Andrew T.; Karau, Eva C.; Sikkink, Pamela G.; Holden, Zachery A.; Strand, Eva K. 2014. Challenges of assessing fire and burn severity using field measures, remote sensing and modelling.
• Ross-Davis, Amy L.; Stewart, Jane E.; Hanna, John W.; Shaw, John D.; Hudak, Andrew T.; Jain, Theresa B.; Denner, Robert J.; Graham, Russell T.; Page-Dumroese, Deborah S.; Tirocke, Joanne M.; Kim, Mee-Sook; Klopfenstein, Ned B. 2014. Forest soil microbial communities: Using metagenomic approaches to survey permanent plots.
• Ottmar, Roger D.; Vihnanek, Robert E.; Wright, Clinton S.; Hudak, Andrew T. 2014. Ground measurements of fuel and fuel consumption from experimental and operational prescribed fires at Eglin Air Force Base, Florida.
• Vierling, Kerri T.; Swift, Charles E.; Hudak, Andrew T.; Vogeler, Jody C.; Vierling, Lee A. 2014. How much does the time lag between wildlife field-data collection and LiDAR-data acquisition matter for studies of animal distributions A case study using bird communities.
• Hudak, Andrew T.; Haren, A. Tod; Crookston, Nicholas L.; Liebermann, Robert J.; Ohmann, Janet L. 2014. Imputing forest structure attributes from stand inventory and remotely sensed data in western Oregon, USA.
• Birch, Donovan S.; Morgan, Penelope; Kolden, Crystal A.; Hudak, Andrew T.; Smith, Alistair M. S. 2014. Is proportion burned severely related to daily area burned.
• Bright, Benjamin C.; Hudak, Andrew T.; Kennedy, Robert E.; Meddens, Arjan J. H. 2014. Landsat time series and lidar as predictors of live and dead basal area across five bark beetle-affected forests.
• Silva, Carlos Alberto; Klauberg, Carine; Carvalho, Samuel de Padua Chaves e; Hudak, Andrew T.; Rodriguez, e Luiz Carlos Estraviz. 2014. Mapping aboveground carbon stocks using LiDAR data in Eucalyptus spp. plantations in the state of Sao Paulo, Brazil.
• Hudak, Andrew T.; Ottmar, Roger D.; Vihnanek, Robert E.; Wright, Clint S. 2014. Relationship of post-fire ground cover to surface fuel loads and consumption in longleaf pine ecosystems.
• Smith, Alistair M. S.; Kolden, Crystal A.; Tinkham, Wade T.; Talhelm, Alan F.; Marshall, John D.; Hudak, Andrew T.; Boschetti, Luigi; Falkowski, Michael J.; Greenberg, Jonathan A.; Anderson, John W.; Kliskey, Andrew; Alessa, Lilian; Keefe, Robert F.; Gosz, James R. 2014. Remote sensing the vulnerability of vegetation in natural terrestrial ecosystems.
• Vogeler, Jody C.; Hudak, Andrew T.; Vierling, Lee A.; Evans, Jeffrey; Green, Patricia; Vierling, Kerri T. 2014. Terrain and vegetation structural influences on local avian species richness in two mixed-conifer forests.
• Galvez, Fabian B.; Hudak, Andrew T.; Byrne, John C.; Crookston, Nicholas L.; Keefe, Robert F. 2014. Using climate-FVS to project landscape-level forest carbon stores for 100 years from field and LiDAR measures of initial conditions.
• Morgan, Penelope; Moy, Marshell; Droske, Christine A.; Lentile, Leigh B.; Lewis, Sarah A.; Robichaud, Peter R.; Hudak, Andrew T. 2014. Vegetation response after post-fire mulching and native grass seeding.
• Meddens, Arjan J. H.; Hicke, Jeffrey A.; Vierling, Lee A.; Hudak, Andrew T. 2013. Evaluating methods to detect bark beetle-caused tree mortality using single-date and multi-date Landsat imagery.
• Brewer, Nolan W.; Smith, Alistair M.S.; Hatten, Jeffery A.; Higuera, Philip E.; Hudak, Andrew T.; Ottmar, Roger D.; Tinkham, Wade T. 2013. Fuel moisture influences on fire-altered carbon in masticated fuels: An experimental study.
• Vogeler, Jody C.; Hudak, Andrew T.; Vierling, Lee A.; Vierling, Kerri T. 2013. Lidar-derived canopy architecture predicts Brown Creeper occupancy of two western coniferous forests.
• O'Brien, J.; Dyer, L.; Mitchell, R.; Hudak, A. 2013. Patterns and processes: Monitoring and understanding plant diversity in frequently burned longleaf pine (Pinus palustris) landscapes.
• Bright, Benjamin C.; Hudak, Andrew T.; McGaughey, Robert; Andersen, Hans-Erik; Negron, Jose. 2013. Predicting live and dead tree basal area of bark beetle affected forests from discrete-return lidar.
• Wulder, M. A.; Coops, N. C.; Hudak, A. T.; Morsdorf, F.; Nelson, R.; Newnham, G.; Vastaranta, M. 2013. Status and prospects for LiDAR remote sensing of forested ecosystems.
• Hudak, Andrew T.; Ottmar, Roger D.; Vihnanek, Robert E.; Brewer, Nolan W.; Smith, Alistair M. S.; Morgan, Penelope. 2013. The relationship of post-fire white ash cover to surface fuel consumption.
• Wooster, Martin J.; Roberts, Gareth; Smith, Alistair M.S.; Johnston, Joshua; Freeborn, Patrick; Amici, Stefania; Hudak, Andrew T. 2013. Thermal remote sensing of active vegetation fires and biomass burning events Chapter 18.
• Vierling, Lee A.; Vierling, Kerri T.; Adam, Patrick; Hudak, Andrew T. 2013. Using satellite and airborne LiDAR to model woodpecker habitat occupancy at the landscape scale.
• Bright, Benjamin C.; Hicke, Jeffrey A.; Hudak, Andrew T. 2012. Estimating aboveground carbon stocks of a forest affected by mountain pine beetle in Idaho using lidar and multispectral imagery.
• Tinkham, Wade T.; Smith, Alistair M. S.; Hoffman, Chad; Hudak, Andrew T.; Falkowski, Michael J.; Swanson, Mark E.; Gessler, Paul E. 2012. Investigating the influence of LiDAR ground surface errors on the utility of derived forest inventories.
• Bright, Benjamin; Hicke, J. A.; Hudak, A. T. 2012. Landscape-scale analysis of aboveground tree carbon stocks affected by mountain pine beetles in Idaho.
• Hudak, Andrew T.; Bright, Ben; Negron, Jose; McGaughey, Robert; Andersen, Hans-Erik; Hicke, Jeffrey A. 2012. Predicting live and dead basal area in bark beetle-affected forests from discrete-return LiDAR.
• Hudak, Andrew T.; Strand, Eva K.; Vierling, Lee A.; Byrne, John C.; Eitel, Jan U. H.; Martinuzzi, Sebastian; Falkowski, Michael J. 2012. Quantifying aboveground forest carbon pools and fluxes from repeat LiDAR surveys.
• Martinuzzi, Sebastian; Gould, William A.; Vierling, Lee A.; Hudak, Andrew T.; Nelson, Ross F.; Evans, Jeffrey S. 2012. Quantifying tropical dry forest type and succession: substantial improvement with LiDAR.
• Dobre, Mariana; Elliot, William J.; Wu, Joan Q.; Link, Timothy E.; Glaza, Brandon; Jain, Theresa B.; Hudak, Andrew T. 2012. Relationship of field and LiDAR estimates of forest canopy cover with snow accumulation and melt.
• Lewis, Sarah A.; Robichaud, Peter R.; Hudak, Andrew T.; Austin, Brian; Liebermann, Robert J. 2012. Utility of remotely sensed imagery for assessing the impact of salvage logging after forest fires.
• Moreira, Eder Paulo; Elliot, William J.; Hudak, Andrew T. 2011. Effects of DTM resolution on slope steepness and soil loss prediction on hillslope profiles.
• Jensen, Jennifer L. R.; Humes, Karen S.; Hudak, Andrew T.; Vierling, Lee A.; Delmelle, Eric. 2011. Evaluation of the MODIS LAI product using independent lidar-derived LAI: A case study in mixed conifer forest.
• Hudak, Andrew T.; Jain, Theresa B.; Morgan, Penelope; Clark, Jess T. 2011. Remote sensing of WUI fuel treatment effectiveness following the 2007 wildfires in central Idaho.
• Smith, Alistair M. S.; Falkowski, Michael J.; Hudak, Andrew T.; Evans, Jeffrey S.; Robinson, Andrew P.; Steele, Caiti M. 2010. A cross-comparison of field, spectral, and lidar estimates of forest canopy cover.
• Holden, Zachary A.; Morgan, Penelope; Hudak, Andrew T. 2010. Burn severity of areas reburned by wildfires in the Gila National Forest, New Mexico, USA.
• Falkowski, Michael J.; Hudak, Andrew T.; Crookston, Nicholas L.; Gessler, Paul E.; Uebler, Edward H.; Smith, Alistair M. S. 2010. Landscape-scale parameterization of a tree-level forest growth model: a k-nearest neighbor imputation approach incorporating LiDAR data.
• Falkowski, Michael J.; Evans, Jeffrey S.; Martinuzzi, Sebastian; Gessler, Paul E.; Hudak, Andrew T. 2009. Characterizing forest succession with lidar data: An evaluation for the Inland Northwest, USA.
• Hudak, Andrew T.; Crookston, Nicholas L.; Evans, Jeffrey S.; hall, David E.; Falkowski, Michael J. 2009. Corrigendum to "Nearest neighbor imputation of species-level, plot-scale forest structure attributes from LiDAR data".
• Evans, Jeffrey S.; Hudak, Andrew T.; Faux, Russ; Smith, Alistair M. S. 2009. Discrete return lidar in natural resources: Recommendations for project planning, data processing, and deliverables.
• Martinuzzi, Sebastian; Vierling, Lee A.; Gould, William A.; Vierling, Kerri T.; Hudak, Andrew T. 2009. Incorporating remotely sensed tree canopy cover data into broad scale assessments of wildlife habitat distribution and conservation.
• Hudak, Andrew Thomas; Evans, Jeffrey Scott; Smith, Alistair Mattthew Stuart. 2009. LiDAR utility for natural resource managers.
• Martinuzzi, Sebastian; Vierling, Lee A.; Gould, William A.; Falkowski, Michael J.; Evans, Jeffrey S.; Hudak, Andrew T.; Vierling, Kerri T. 2009. Mapping snags and understory shrubs for LiDAR based assessment of wildlife habitat suitability.
• Lentile, Leigh B.; Smith, Alistair M. S.; Hudak, Andrew T.; Morgan, Penelope; Bobbitt, Michael J.; Lewis, Sarah A.; Robichaud, Peter R. 2009. Remote sensing for prediction of 1-year post-fire ecosystem condition.
• Jimenez, D.; Butler, B.; Hiers, K.; Ottmar, R.; Dickinson, M.; Kremens, R.; O'Brien, J.; Hudak, A.; Clements, C. 2009. Rx-CADRE (Prescribed Fire Combustion-Atmospheric Dynamics Research Experiments) collaborative research in the core fire sciences.
• Eskelson, Bianca N. I.; Temesgen, Hailemariam; Lemay, Valerie; Barrett, Tara M.; Crookston, Nicholas L.; Hudak, Andrew T. 2009. The roles of nearest neighbor methods in imputing missing data in forest inventory and monitoring databases.
• Hudak, Andrew T.; Evans, Jeffrey S.; Crookston, Nicholas L.; Falkowski, Michael J.; Steigers, Brant K.; Taylor, Rob; Hemingway, Halli. 2008. Aggregating pixel-level basal area predictions derived from LiDAR data to industrial forest stands in North-Central Idaho.
• Meddens, Arjan J. H.; Hudak, Andrew T.; Evans, Jeffrey S.; Gould, William A.; Gonzalez, Grizelle. 2008. Characterizing forest fragments in boreal, temperate, and tropical ecosystems.
• Gonzalez, Grizelle; Gould, William; Hudak, Andrew T.; Hollingsworth, Teresa Nettleton. 2008. Decay of aspen (Populus tremuloides Michx.) wood in moist and dry boreal, temperate, and tropical forest fragments.
• Jensen, Jennifer L. R.; Humes, Karen S.; Vierling, Lee A.; Hudak, Andrew T. 2008. Discrete return lidar-based prediction of leaf area index in two conifer forests.
• Gould, William A.; Gonzalez, Grizelle; Hudak, Andrew T.; Hollingsworth, Teresa Nettleton; Hollingsworth, Jamie. 2008. Forest structure and downed woody debris in boreal temperate, and tropical forest fragments.
• Hudak, Andrew T.; Crookston, Nicholas L.; Evans, Jeffrey S.; Hall, David E.; Falkowski, Michael J. 2008. Nearest neighbor imputation of species-level, plot-scale forest structure attributes from LiDAR data.
• Falkowski, Michael J.; Smith, Alistair M.S.; Gessler, Paul E.; Hudak, Andrew T.; Vierling, Lee A.; Evans, Jeffrey S. 2008. The influence of conifer forest canopy cover on the accuracy of two individual tree measurement algorithms using lidar data.
• Evans, Jeffrey S.; Hudak, Andrew T. 2007. A multiscale curvature algorithm for classifying discrete return LiDAR in forested environments.
• Hudak, Andrew T.; Morgan, Penelope; Bobbitt, Mike; Lentile, Leigh. 2007. Characterizing stand-replacing harvest and fire disturbance patches in a forested landscape: A case study from Cooney Ridge, Montana.
• Smith, A. M. S.; Lenilte, L. B.; Hudak, A. T.; Morgan, P. 2007. Evaluation of linear spectral unmixing and deltaNBR for predicting post-fire recovery in a North American ponderosa pine forest.
• Lentile, Leigh; Morgan, Penny; Hardy, Colin; Hudak, Andrew; Means, Robert; Ottmar, Roger; Robichaud, Peter; Sutherland, Elaine; Way, Frederick; Lewis, Sarah. 2007. Lessons learned from Rapid Response Research on wildland fires.
• Lewis, Sarah A.; Lentile, Leigh B.; Hudak, Andrew T.; Robichaud, Peter R.; Morgan, Penelope; Bobbitt, Michael J. 2007. Mapping ground cover using hyperspectral remote sensing after the 2003 Simi and Old wildfires in southern California.
• Lentile, Leigh B.; Morgan, Penelope; Hudak, Andrew T.; Bobbitt, Michael J.; Lewis, Sarah A.; Smith, Alistair M. S.; Robichaud, Peter R. 2007. Post-fire burn severity and vegetation response following eight large wildfires across the Western United States.
• Robichaud, Peter R.; Lewis, Sarah A.; Laes, Denise Y. M.; Hudak, Andrew T.; Kokaly, Raymond F.; Zamudio, Joseph A. 2007. Postfire soil burn severity mapping with hyperspectral image unmixing.
• Smith, A. M. S.; Drake, N. A.; Wooster, M. J.; Hudak, A. T.; Holden, Z. A.; Gibbons, C. J. 2007. Production of Landsat ETM+ reference imagery of burned areas within Southern African savannahs: comparison of methods and application to MODIS.
• Hudak, Andrew T.; Thode, Andrea E.; van Wagtendonk, Jan W. 2007. Special issue: Remote sensing applications for investigations of fire regime attributes.
• Hudak, Andrew T.; Morgan, Penelope; Bobbitt, Michael J.; Smith, Allstair M. S.; Lewis, Sarah A.; Lentile, Leigh B.; Robichaud, Peter R.; Clark, Jess T.; McKinley, Randy A. 2007. The relationship of multispectral satellite imagery to immediate fire effects.
• Lentile, L.; Morgan, P.; Hardy, C.; Hudak, A.; Means, R.; Ottmar, R.; Robichaud, P.; Sutherland, E. Kennedy; Szymoniak, J.; Way, F.; Fites-Kaufman, J.; Lewis, S.; Mathews, E.; Shovik, H.; Ryan, K. 2007. Value and challenges of conducting rapid response research on wildland fires.
• Falkowski, Michael J.; Smith, Alistair M.S.; Hudak, Andrew T.; Gessler, Paul E.; Vierling, Lee A.; Crookston, Nicholas L. 2006. Automated estimation of individual conifer tree height and crown diameter via Two-dimensional spatial wavelet analysis of lidar data.
• Hudak, Andrew T.; Crookston, Nicholas L.; Evans, Jeffrey S.; Falkowski, Michael K.; Smith, Alistair M. S.; Gessler, Paul E.; Morgan, Penelope. 2006. Regression modeling and mapping of coniferous forest basal area and tree density from discrete-return lidar and multispectral data.
• Lentile, Leigh B.; Holden, Zachary A.; Smith, Alistair M. S.; Falkowski, Michael J.; Hudak, Andrew T.; Morgan, Penelope; Lewis, Sarah A.; Gessler, Paul E.; Benson, Nate C. 2006. Remote sensing techniques to assess active fire characteristics and post-fire effects.
• Hudak, A. T.; Lewis, S.; Robichaud, P.; Morgan, P.; Bobbitt, M.; Lentile, L.; Smith, A.; Holden, Z.; Clark, J.; McKinley, R. 2006. Sensitivity of Landsat image-derived burn severity indices to immediate post-fire effects.
• Falkowski, Michael J.; Gessler, Paul E.; Morgan, Penelope; Hudak, Andrew T.; Smith, Alistair M. S. 2005. Characterizing and mapping forest fire fuels using ASTER imagery and gradient modeling.
• Berterretche, Mercedes; Hudak, Andrew T.; Cohen, Warren B.; Maiersperger, Thomas K.; Gower, Stith T.; Dungan, Jennifer. 2005. Comparison of regression and geostatistical methods for mapping Leaf Area Index (LAI) with Landsat ETM+ data over a boreal forest..
• Smith, Alistair M. S.; Hudak, Andrew T. 2005. Estimating combustion of large downed woody debris from residual white ash.
• Lefsky, Michael A.; Hudak, Andrew T.; Cohen, Warren B.; Acker, S. A. 2005. Geographic variability in lidar predictions of forest stand structure in the Pacific Northwest.
• Lefsky, Michael A.; Hudak, Andrew T.; Cohen, Warren B.; Acker, S.A. 2005. Patterns of covariance between forest stand and canopy structure in the Pacific Northwest..
• Hudak, Andrew T.; Evans, Jeffrey S.; Falkowski, Michael J.; Crookston, Nicholas L.; Gessler, Paul E.; Morgan, Penelope; Smith, Alistair M. S. 2005. Predicting plot basal area and tree density in mixed-conifer forest from lidar and Advanced Land Imager (ALI) data.
• Smith, Alistair M.S.; Wooster, Martin J.; Drake, Nick A.; Dipotso, Frederick M.; Falkowski, Michael J.; Hudak, Andrew T. 2005. Testing the potential of multi-spectral remote sensing for retrospectively estimating fire severity in African savannahs.
• Falkowski, Michael J.; Gessler, Paul; Morgan, Penelope; Smith, Alistair M. S.; Hudak, Andrew T. 2004. Evaluating ASTER satellite imagery and gradient modeling for mapping and characterizing wildland fire fuels.
• Falkowski, Michael J.; Gessler, Paul; Morgan, Penelope; Smith, Alistair M. S.; Hudak, Andrew T. 2004. Evaluating the ASTER sensor for mapping and characterizing forest fire fuels in northern Idaho.
• Hudak, Andrew T.; Robichaud, Peter R.; Evans, Jeffery B.; Clark, Jess; Lannom, Keith; Morgan, Penelope; Stone, Carter. 2004. Field validation of Burned Area Reflectance Classification (BARC) products for post fire assessment.
• Hudak, A. T.; Brockett, B. H. 2004. Mapping fire scars in a southern African savannah using Landsat imagery.
• Flasse, Stephane P.; Trigg, Simon N.; Ceccato, Pietro N.; Perryman, Anita H.; Hudak, Andrew T.; Thompson, Mark W.; Brockett, Bruce H.; Drame, Moussa; Ntabeni, Tim; Frost, Philip E.; Landmann, Tobias; le Roux, Johan L. 2004. Remote sensing of vegetation fires and its contribution to a fire management information system.
• Hudak, Andrew; Morgan, Penelope; Stone, Carter; Robichaud, Pete; Jain, Terrie; Clark, Jess. 2004. The relationship of field burn severity measures to satellite-derived Burned Area Reflectance Classification (BARC) maps.
• Hudak, A. T.; Fairbanks, D. H. K.; Brockett, B. H. 2004. Trends in fire patterns in a southern African savanna under alternative land use practices.
• Hudak, Andrew T.; Brockett, Bruce H. 2003. Relationships between fire frequency and woody canopy cover in a semi-arid African savanna.
• Hudak, A. T.; Wessman, C. A.; Seastedt, T. R. 2003. Woody overstorey effects on soil carbon and nitrogen pools in South African savanna.
• Hudak, Andrew T.; Lefsky, Michael A.; Cohen, Warren B.; Berterretche, Mercedes. 2002. Integration of lidar and Landsat ETM+ data for estimating and mapping forest canopy height..
• Byers, Bruce A; Cunliffe, Robert N.; Hudak, Andrew T. 2001. Linking the conservation of culture and nature: A case study of sacred forests in Zimbabwe.
• Hudak, A. T.; Wessman, C.A. 2001. Textural analysis of high resolution imagery to quantify bush encroachment in Madikwe Game Reserve, South Africa, 1955-1996.
• Hudak, Andrew T.; Wessman, Carol A. 2000. Deforestation in Mwanza District, Malawi, from 1981 to 1992 as determined from Landsat MSS imagery.
• Hudak, Andrew T. 1999. Rangeland mismanagement in South Africa: Failure to apply ecological knowledge.
• Hudak, Andrew T.; Brockett, Bruce H.; Wessman, Carol A. 1998. Fire scar mapping in a southern African savanna.
• Hudak, Andrew T.; Wessman, Carol A. 1998. Textural analysis of historical aerial photography to characterize woody plant encroachment in South African savanna.

Research Highlights

Highlight	Title	Year
RMRS-2011-04	Can fuel treatments mitigate wildfire effects Did a real-time test of fuel treatments help mitigate the effects of a large wildfire	2011
RMRS-2017-211	Forest structure relates to plant diversity, fuels, and fire regime Forest Service researchers associated LiDAR data from Eglin Air Force Base in Florida with field plot data and fire management records. They det ...	2017
RMRS-2016-223	Laser Technology and Modeling Tools for Precision Forest Inventory, Monitoring, and Planning Forest Service scientists and their partners are developing relationships between LiDAR estimates and traditional forestry measures collected on ...	2016
RMRS-2016-231	Prescribed Fires: Mapping Fuels and Energy Release Across the Landscape Pine needles, deciduous leaves, and downed woody debris accumulate in the absence of fire along with grass and other dead plant material. This b ...	2016
SRS-2018-65	Rethinking how we measure forest fuels for advancing wildland fire science and management Land managers depend on quality fire research to advance their understanding of wildland fire behavior. Cutting-edge fire behavior models output ...	2018