Register      Login
International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE (Open Access)

Drivers of California’s changing wildfires: a state-of-the-knowledge synthesis

Glen MacDonald A * , Tamara Wall B * , Carolyn A. F. Enquist C * , Sarah R. LeRoy D * , John B. Bradford E , David D. Breshears F , Timothy Brown B , Daniel Cayan G , Chunyu Dong H , Donald A. Falk https://orcid.org/0000-0003-3873-722X F , Erica Fleishman I , Alexander Gershunov G , Molly Hunter F , Rachel A. Loehman J , Phillip J. van Mantgem K , Beth Rose Middleton L , Hugh D. Safford M N , Mark W. Schwartz O and Valerie Trouet P
+ Author Affiliations
- Author Affiliations

A University of California, Los Angeles, Bunche Hall 1152, Los Angeles, CA 90095, USA.

B Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA. Email: tim.brown@dri.edu

C US Geological Survey, Southwest Climate Adaptation Science Center, 1064 E Lowell Street, Suite N427, University of Arizona, Tucson, AZ 85721, USA.

D Southwest Climate Adaptation Science Center, University of Arizona, 1064 E. Lowell Street, Suite N446, Tucson, AZ 85721, USA.

E Southwest Biological Science Center, US Geological Survey, Flagstaff, AZ 86001, USA.

F School of Natural Resources and the Environment, University of Arizona, Tucson, AZ 85721, USA. Email: mollyhunter@u.arizona.edu

G Scripps Institution of Oceanography, University of California San Diego, CA 92093-0230, USA. Email: dcayan@ucsd.edu, sasha@ucsd.edu

H School of Civil Engineering, Sun Yat-sen University, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China. Email: dongchy7@mail.sysu.edu.cn

I College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA. Email: erica.fleishman@oregonstate.edu

J Alaska Science Center, US Geological Survey, 4210 University Drive, Anchorage, AK 99508, USA. Email: rloehman@usgs.gov

K Western Ecological Research Center, US Geological Survey, 1655 Heindon Road, Arcata, CA 95521, USA. Email: pvanmantgem@usgs.gov

L Department of Native American Studies, UC Davis, CA 95616, USA. Email: brmiddleton@ucdavis.edu

M Vibrant Planet, Incline Village, NV 89450, USA.

N Department of Environmental Science and Policy, University of California, Davis, CA 95616, USA. Email: hdsafford@ucdavis.edu

O University of California, Davis, 1 Shields Avenue, Davis, CA 95616, USA. Email: Mwschwartz@ucdavis.edu

P Laboratory of Tree-Ring Research, University of Arizona, 1215 E. Lowell Street, Tucson, AZ 85721, USA. Email: trouet@arizona.edu

International Journal of Wildland Fire 32(7) 1039-1058 https://doi.org/10.1071/WF22155
Submitted: 8 July 2022  Accepted: 7 April 2023   Published: 22 May 2023

© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of IAWF. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)

Abstract

Over the past four decades, annual area burned has increased significantly in California and across the western USA. This trend reflects a confluence of intersecting factors that affect wildfire regimes. It is correlated with increasing temperatures and atmospheric vapour pressure deficit. Anthropogenic climate change is the driver behind much of this change, in addition to influencing other climate-related factors, such as compression of the winter wet season. These climatic trends and associated increases in fire activity are projected to continue into the future. Additionally, factors related to the suppression of the Indigenous use of fire, aggressive fire suppression and, in some cases, changes in logging practices or fuel management intensity, collectively have produced large build-ups of vegetative fuels in some ecosystems. Human activities provide the most common ignition source for California’s wildfires. Despite its human toll, fire provides a range of ecological benefits to many California ecosystems. Given the diversity of vegetation types and fire regimes found in the state, addressing California’s wildfire challenges will require multi-faceted and locally targeted responses in terms of fuel management, human-caused ignitions, building regulations and restrictions, integrative urban and ecosystem planning, and collaboration with Tribes to support the reinvigoration of traditional burning regimes.

Keywords: California, climate change, fire suppression, fuel management, ignition sources, Indigenous burning, vegetation, wildfire, wildland fire, wildland–urban Interface.


References

Abatzoglou JT, Kolden CA (2013) Relationships between climate and macroscale area burned in the western United States. International Journal of Wildland Fire 22, 1003–1020.
Relationships between climate and macroscale area burned in the western United States.Crossref | GoogleScholarGoogle Scholar |

Abatzoglou JT, Williams AP (2016) Impact of anthropogenic climate change on wildfire across western US forests. Proceedings of the National Academy of Sciences 113, 11770–11775.
Impact of anthropogenic climate change on wildfire across western US forests.Crossref | GoogleScholarGoogle Scholar |

Adams HD, Barron-Gafford GA, Minor RL, Gardea AA, Bentley LP, Law DJ, Breshears DD, McDowell NG, Huxman TE (2017) Temperature response surfaces for mortality risk of tree species with future drought. Environmental Research Letters 12, 115014
Temperature response surfaces for mortality risk of tree species with future drought.Crossref | GoogleScholarGoogle Scholar |

Adetona O, Reinhardt TE, Domitrovich J, Broyles G, Adetona AM, Kleinman MT, Ottmar RD, Naeher LP (2016) Review of the health effects of wildland fire smoke on wildland firefighters and the public. Inhalation Toxicology 28, 95–139.
Review of the health effects of wildland fire smoke on wildland firefighters and the public.Crossref | GoogleScholarGoogle Scholar |

Adlam C, Almendariz D, Goode RW, Martinez DJ, Middleton BR (2021) Keepers of the flame: supporting the revitalization of Indigenous cultural burning. Society & Natural Resources 35, 575–590.
Keepers of the flame: supporting the revitalization of Indigenous cultural burning.Crossref | GoogleScholarGoogle Scholar |

Agee JK, Skinner CN (2005) Basic principles of forest fuel reduction treatments. Forest Ecology and Management 211, 83–96.
Basic principles of forest fuel reduction treatments.Crossref | GoogleScholarGoogle Scholar |

Aguilera R, Corringham T, Gershunov A, Benmarhnia T (2021) Wildfire smoke impacts respiratory health more than fine particles from other sources: observational evidence from Southern California. Nature Communications 12, 1493
Wildfire smoke impacts respiratory health more than fine particles from other sources: observational evidence from Southern California.Crossref | GoogleScholarGoogle Scholar |

Aldern JD, Goode RW (2014) The stories hold water: learning and burning in North Fork Mono homelands. Decolonization: Indigeneity, Education, and Society 3, 26–51.

Alizadeh MR, Abatzoglou JT, Luce CH, Adamowski JF, Farid A, Sadegh M (2021) Warming enabled upslope advance in western US forest fires. Proceedings of the National Academy of Sciences 118, e2009717118
Warming enabled upslope advance in western US forest fires.Crossref | GoogleScholarGoogle Scholar |

Anderson MK (1994) Prehistoric anthropogenic wildland burning by hunter-gatherer societies in the temperate regions: a net source, sink, or neutral to the global carbon budget? Chemosphere 29, 913–934.
Prehistoric anthropogenic wildland burning by hunter-gatherer societies in the temperate regions: a net source, sink, or neutral to the global carbon budget?Crossref | GoogleScholarGoogle Scholar |

Anderson MK (1996) The ethnobotany of deergrass, Muhlenbergia rigens (Poaceae): its uses and fire management by California Indian tribes. Economic Botany 50, 409–22.
The ethnobotany of deergrass, Muhlenbergia rigens (Poaceae): its uses and fire management by California Indian tribes.Crossref | GoogleScholarGoogle Scholar |

Anderson MK (2005) ‘Tending the Wild. Native American knowledge and the management of California’s natural resources.’ (University of California Press: Berkeley, CA, USA)

Anderson MK, Keeley JE (2018) Native peoples’ relationship to the California chaparral. In ‘Valuing chaparral’. Springer Series on Environmental Management. (Eds E Underwood, H Safford, N Molinari, J Keeley) pp. 79–121. (Springer: Cham, Switzerland)

Balch JK, Bradley BA, Abatzoglou JT, Nagy RC, Fusco EJ, Mahood AL (2017) Human-started wildfires expand the fire niche across the United States. Proceedings of the National Academy of Sciences 114, 2946–2951.
Human-started wildfires expand the fire niche across the United States.Crossref | GoogleScholarGoogle Scholar |

Beaty RM, Taylor AH (2001) Spatial and temporal variation of fire regimes in a mixed conifer forest landscape, Southern Cascades, California, USA. Journal of Biogeography 28, 955–966.
Spatial and temporal variation of fire regimes in a mixed conifer forest landscape, Southern Cascades, California, USA.Crossref | GoogleScholarGoogle Scholar |

Beaty RM, Taylor AH (2008) Fire history and the structure and dynamics of a mixed conifer forest landscape in the northern Sierra Nevada, Lake Tahoe Basin, California, USA. Forest Ecology and Management 255, 707–719.
Fire history and the structure and dynamics of a mixed conifer forest landscape in the northern Sierra Nevada, Lake Tahoe Basin, California, USA.Crossref | GoogleScholarGoogle Scholar |

Belmecheri S, Babst F, Wahl ER, Stahle DW, Trouet V (2016) Multi-century evaluation of Sierra Nevada snowpack. Nature Climate Change 6, 2–3.
Multi-century evaluation of Sierra Nevada snowpack.Crossref | GoogleScholarGoogle Scholar |

Berg N, Hall A (2015) Increased interannual precipitation extremes over California under climate change. Journal of Climate 28, 6324–6334.
Increased interannual precipitation extremes over California under climate change.Crossref | GoogleScholarGoogle Scholar |

Bernal AA, Stephens SL, Collins BM, Battles JJ (2022) Biomass stocks in California’s fire-prone forests: mismatch in ecology and policy. Environmental Research Letters 17, 044047
Biomass stocks in California’s fire-prone forests: mismatch in ecology and policy.Crossref | GoogleScholarGoogle Scholar |

Black A, Williamson M, Doane D (2007) Wildland fire use barriers and facilitators. Fire Management Today 68, 10–14.

Bohlman GN, Underwood EC, Safford HD (2018) Estimating biomass in California’s chaparral and coastal sage scrub shrublands. Madroño 65, 28–46.
Estimating biomass in California’s chaparral and coastal sage scrub shrublands.Crossref | GoogleScholarGoogle Scholar |

Bohlman G, Safford HD, Skinner CN (2021) Natural range of variation (NRV) for yellow pine and mixed conifer forests in northwestern California and southwestern Oregon. General Technical Report PSW-GTR-273. (USDA Forest Service, Pacific Southwest Research Station: Albany, CA, USA)

Bolton HE (1927) ‘Fray Juan Crespi: Missionary Explorer on the Pacific Coast 1769-1774.’ (University of California Press: Berkeley, CA, USA)

Bonfils C, Santer BD, Pierce DW, Hidalgo HG, Bala G, Das T, Barnett TP, Cayan DR, Doutriaux C, Wood AW, Mirin A, Nozawa T (2008) Detection and attribution of temperature changes in the mountainous western United States. Journal of Climate 21, 6404–6424.
Detection and attribution of temperature changes in the mountainous western United States.Crossref | GoogleScholarGoogle Scholar |

Botti S, Nichols T (2021) National Park Service fire restoration, policies versus results: what went wrong. Parks Stewardship Forum 37, 353–367.
National Park Service fire restoration, policies versus results: what went wrong.Crossref | GoogleScholarGoogle Scholar |

Bradford JB, Schlaepfer DR, Lauenroth WK, Palmquist KA (2020) Robust ecological drought projections for drylands in the 21st century. Global Change Biology 26, 3906–3919.
Robust ecological drought projections for drylands in the 21st century.Crossref | GoogleScholarGoogle Scholar |

Brooks ML (1999) Alien annual grasses and fire in the Mojave Desert. Madroño 46, 13–19.

Brown PM, Swetnam TW (1994) A cross-dated fire history from coast redwood near Redwood National Park, California. Canadian Journal of Forest Research 24, 21–31.
A cross-dated fire history from coast redwood near Redwood National Park, California.Crossref | GoogleScholarGoogle Scholar |

CAL FIRE (2021) Fire statistics. Available at https://www.fire.ca.gov/stats-events/ [verified 6 September 2021]

California’s Wildfire and Forest Resilience Action Plan: Recommendations of the Governor's Forest Management Task Force (2021) Available at https://wildfiretaskforce.org/wp-content/uploads/2022/04/californiawildfireandforestresilienceactionplan.pdf

Calkin DE, Thompson MP, Finney MA (2015) Negative consequences of positive feedbacks in US wildfire management. Forest Ecosystems 2, 9
Negative consequences of positive feedbacks in US wildfire management.Crossref | GoogleScholarGoogle Scholar |

Cayan DR, DeHaan LL, Gershunov A, Guzman-Morales J, Keeley JE, Mumford J, Syphard AD (2022) Autumn precipitation: the competition with Santa Ana winds in determining fire outcomes in southern California. International Journal of Wildland Fire 31, 1056–1067.
Autumn precipitation: the competition with Santa Ana winds in determining fire outcomes in southern California.Crossref | GoogleScholarGoogle Scholar |

Chen B, Jin Y (2022) Spatial patterns and drivers for wildfire ignitions in California. Environmental Research Letters 17, 055004
Spatial patterns and drivers for wildfire ignitions in California.Crossref | GoogleScholarGoogle Scholar |

Chen B, Jin Y, Scaduto E, Moritz MA, Goulden ML, Randerson JT (2021) Climate, fuel, and land use shaped the spatial pattern of wildfire in California’s Sierra Nevada. Journal of Geophysical Research: Biogeosciences 126, e2020JG005786
Climate, fuel, and land use shaped the spatial pattern of wildfire in California’s Sierra Nevada.Crossref | GoogleScholarGoogle Scholar |

Collins BM, Everett RG, Stephens SL (2011) Impacts of fire exclusion and recent managed fire on forest structure in old growth Sierra Nevada mixed‐conifer forests. Ecosphere 2, art51
Impacts of fire exclusion and recent managed fire on forest structure in old growth Sierra Nevada mixed‐conifer forests.Crossref | GoogleScholarGoogle Scholar |

Coppoletta M, Merriam KE, Collins BM (2016) Post-fire vegetation and fuel development influences fire severity patterns in reburns. Ecological Applications 26, 686–699.
Post-fire vegetation and fuel development influences fire severity patterns in reburns.Crossref | GoogleScholarGoogle Scholar |

Cowan J (2020) Alarmed by scope of wildfires, Officials Turn to Native Americans for Help. The New York Times, 7 October 2020. Available at https://www.nytimes.com/2020/10/07/us/native-american-burning-practices-california.html [accessed 24 August 2021]

Crausbay SD, Ramirez AR, Carter SL, Cross MS, Hall KR, Bathke DJ, Betancourt JL, Colt S, Cravens AE, Dalton MS, Dunham JB, Hay LE, Hayes MJ, McEvoy J, McNutt CA, Moritz MA, Nislow KH, Raheem N, Sanford T (2017) Defining ecological drought for the twenty-first century. Bulletin of the American Meteorological Society 98, 2543–2550.
Defining ecological drought for the twenty-first century.Crossref | GoogleScholarGoogle Scholar |

Crockett JL, Westerling AL (2018) Greater temperature and precipitation extremes intensify Western US droughts, wildfire severity, and Sierra Nevada tree mortality. Journal of Climate 31, 341–354.
Greater temperature and precipitation extremes intensify Western US droughts, wildfire severity, and Sierra Nevada tree mortality.Crossref | GoogleScholarGoogle Scholar |

David AT, Asarian JE, Lake FK (2018) Wildfire smoke cools summer river and stream water temperatures. Water Resources Research 54, 7273–7290.
Wildfire smoke cools summer river and stream water temperatures.Crossref | GoogleScholarGoogle Scholar |

de Boer HJ, Robertson I, Clisby R, Loader NJ, Gagen M, Young GHF, Wagner-Cremer F, Hipkin CR, McCarroll D (2019) Tree-ring isotopes suggest atmospheric drying limits temperature–growth responses of treeline bristlecone pine. Tree Physiology 39, 983–999.
Tree-ring isotopes suggest atmospheric drying limits temperature–growth responses of treeline bristlecone pine.Crossref | GoogleScholarGoogle Scholar |

DellaSala DA, Hutto RL, Hanson CT, Bond ML, Ingalsbee T, Odion D, Baker WL (2017) Accommodating mixed-severity fire to restore and maintain ecosystem integrity with a focus on the Sierra Nevada of California, USA. Fire Ecology 13, 148–171.
Accommodating mixed-severity fire to restore and maintain ecosystem integrity with a focus on the Sierra Nevada of California, USA.Crossref | GoogleScholarGoogle Scholar |

Dennison PE, Brewer SC, Arnold JD, Moritz MA (2014) Large wildfire trends in the western United States, 1984–2011. Geophysical Research Letters 41, 2928–2933.
Large wildfire trends in the western United States, 1984–2011.Crossref | GoogleScholarGoogle Scholar |

Diffenbaugh NS, Swain DL, Touma D (2015) Anthropogenic warming has increased drought risk in California. Proceedings of the National Academy of Sciences 112, 3931–3936.
Anthropogenic warming has increased drought risk in California.Crossref | GoogleScholarGoogle Scholar |

Dong C, Williams AP, Abatzoglou JT, Lin K, Okin GS, Gillespie TW, Long D, Lin Y-H, Hall A, MacDonald GM (2022) The season for large fires in Southern California is projected to lengthen in a changing climate. Communications Earth & Environment 3, 22
The season for large fires in Southern California is projected to lengthen in a changing climate.Crossref | GoogleScholarGoogle Scholar |

Downing WM, Dunn CJ, Thompson MP, Caggiano MD, Short KC (2022) Human ignitions on private lands drive USFS cross-boundary wildfire transmission and community impacts in the western US. Scientific Reports 12, 2624
Human ignitions on private lands drive USFS cross-boundary wildfire transmission and community impacts in the western US.Crossref | GoogleScholarGoogle Scholar |

Elassar A (2022) California once prohibited Native American fire practices. Now, it’s asking tribes to use them to help prevent wildfires. CNN. 3 April 2022. Available at https://www.cnn.com/2022/04/03/us/california-native-american-fire-practitioners-wildfires-climate/index.html [accessed 27 April 2022]

Everett RG (2008) Dendrochronology-based fire history of mixed-conifer forests in the San Jacinto Mountains, California. Forest Ecology and Management 256, 1805–1814.
Dendrochronology-based fire history of mixed-conifer forests in the San Jacinto Mountains, California.Crossref | GoogleScholarGoogle Scholar |

Falk DA, Heyerdahl EK, Brown PM, Farris C, Fulé PZ, McKenzie D, Swetnam TW, Taylor AH, Van Horne ML (2011) Multi-scale controls of historical forest-fire regimes: new insights from fire-scar networks. Frontiers in Ecology and the Environment 9, 446–454.
Multi-scale controls of historical forest-fire regimes: new insights from fire-scar networks.Crossref | GoogleScholarGoogle Scholar |

Falk DA, van Mantgem PJ, Keeley JE, Gregg RM, Tepley AJ, Young DJ, Guiterman CH, Marshall LA (2022) Tamm review: mechanisms of forest resilience. Forest Ecology & Management 515, 120129

Flannigan MD, Wotton BM, Marshall GA, De Groot WJ, Johnston J, Jurko N, Cantin AS (2016) Fuel moisture sensitivity to temperature and precipitation: climate change implications. Climatic Change 134, 59–71.
Fuel moisture sensitivity to temperature and precipitation: climate change implications.Crossref | GoogleScholarGoogle Scholar |

Fry DL, Stephens SL (2006) Influence of humans and climate on the fire history of a ponderosa pine-mixed conifer forest in the southeastern Klamath Mountains, California. Forest Ecology and Management 223, 428–438.
Influence of humans and climate on the fire history of a ponderosa pine-mixed conifer forest in the southeastern Klamath Mountains, California.Crossref | GoogleScholarGoogle Scholar |

Fusco EJ, Abatzoglou JT, Balch JK, Finn JT, Bradley BA (2016) Quantifying the human influence on fire ignition across the western USA. Ecological Applications 26, 2390–2401.
Quantifying the human influence on fire ignition across the western USA.Crossref | GoogleScholarGoogle Scholar |

Gabbert B (2021) Forest Service Chief says wildfires will be suppressed, rather than “managed”, for now. Wildfire Today, 3 August 2021. Available at https://wildfiretoday.com/2021/08/03/forest-service-chief-says-wildfires-will-be-suppressed-rather-than-managed-for-now/ [accessed 17 November 2021]

Gergel DR, Nijssen B, Abatzoglou JT, Lettenmaier DP, Stumbaugh MR (2017) Effects of climate change on snowpack and fire potential in the western USA. Climatic Change 141, 287–299.
Effects of climate change on snowpack and fire potential in the western USA.Crossref | GoogleScholarGoogle Scholar |

Gershunov A, Guzman Morales J, Hatchett B, Guirguis K, Aguilera R, Shulgina T, Abatzoglou JT, Cayan D, Pierce D, Williams P, Small I, Clemesha R, Schwarz L, Benmarhnia T, Tardy A (2021) Hot and cold flavors of southern California’s Santa Ana winds: their causes, trends, and links with wildfire. Climate Dynamics 57, 2233–2248.
Hot and cold flavors of southern California’s Santa Ana winds: their causes, trends, and links with wildfire.Crossref | GoogleScholarGoogle Scholar |

Goode R, Gaughen S, Fiero M, Hankins D, Johnson-Reyes K, Middleton BR, Red Owl T, Yonemura R (2018) ‘Summary Report from Tribal and Indigenous Communities within California’. California’s Fourth Climate Change Assessment. Publication number: SUM-CCCA4-2018-010. (California Governor’s Office of Planning and Research) Available at https://www.energy.ca.gov/sites/default/files/2019-11/Statewide_Reports-SUM-CCCA4-2018-010_TribalCommunitySummary_ADA.pdf

Goss M, Swain DL, Abatzoglou JT, Sarhadi A, Kolden CA, Williams AP, Diffenbaugh NS (2020) Climate change is increasing the likelihood of extreme autumn wildfire conditions across California. Environmental Research Letters 15, 094016
Climate change is increasing the likelihood of extreme autumn wildfire conditions across California.Crossref | GoogleScholarGoogle Scholar |

Griffin D, Anchukaitis KJ (2014) How unusual is the 2012–2014 California drought? Geophysical Research Letters 41, 9017–9023.
How unusual is the 2012–2014 California drought?Crossref | GoogleScholarGoogle Scholar |

Guiterman CH, Gregg RM, Marshall LAE, Beckmann JJ, van Mantgem PJ, Falk DA, Keeley JE, Caprio AC, Coop JD, Fornwalt PJ, Haffey C, Hagmann RK, Jackson ST, Lynch AM, Margolis EQ, Marks C, Meyer MD, Safford H, Syphard AD, Taylor A, Wilcox C, Carril D, Enquist CAF, Huffman D, Iniguez J, Molinari NA, Restaino C, Stevens JT (2022) Vegetation type conversion in the US Southwest: frontline observations and management responses. Fire Ecology 18, 6
Vegetation type conversion in the US Southwest: frontline observations and management responses.Crossref | GoogleScholarGoogle Scholar |

Gumz J (2020) Amah Mutsun: When Fire Was a Tool. Times Publishing Group Online Daily, 4 December 2020. Available at https://tpgonlinedaily.com/amah-mutsun-when-fire-was-a-tool/ [accessed 24 August 2021]

Guzman-Morales J, Gershunov A (2019) Climate change suppresses Santa Ana Winds of Southern California and sharpens their seasonality. Geophysical Research Letters 46, 2772–2780.
Climate change suppresses Santa Ana Winds of Southern California and sharpens their seasonality.Crossref | GoogleScholarGoogle Scholar |

Guzman-Morales J, Gershunov A, Theiss J, Li H, Cayan D (2016) Santa Ana Winds of southern California: their climatology, extremes, and behavior spanning six and a half decades. Geophysical Research Letters 43, 2827–2834.
Santa Ana Winds of southern California: their climatology, extremes, and behavior spanning six and a half decades.Crossref | GoogleScholarGoogle Scholar |

Hagemann H (2020) Amah Mutsun Band Reignites Cultural Burning. Santa Cruz Sentinel, 25 November 2020. Available at https://www.santacruzsentinel.com/2020/11/25/amah-mutsun-tribal-band-reignites-cultural-burning/ [accessed 24 August 2021]

Hagmann RK, Hessburg PF, Prichard SJ, Povak NA, Brown PM, Fulé PZ, Keane RE, Knapp EE, Lydersen JM, Metlen KL, Reilly MJ, Sánchez Meador AJ, Stephens SL, Stevens JT, Taylor AH, Yocom LL, Battaglia MA, Churchill DJ, Daniels LD, Falk DA, Henson P, Johnston JD, Krawchuk MA, Levine CR, Meigs GW, Merschel AG, North MP, Safford HD, Swetnam TW, Waltz AEM (2021) Evidence for widespread changes in the structure, composition, and fire regimes of Western North American forests. Ecological Applications 31, e02431
Evidence for widespread changes in the structure, composition, and fire regimes of Western North American forests.Crossref | GoogleScholarGoogle Scholar |

Hammer RB, Radeloff VC, Fried JS, Stewart SI (2007) Wildland–urban interface housing growth during the 1990s in California, Oregon, and Washington. International Journal of Wildland Fire 16, 255–265.
Wildland–urban interface housing growth during the 1990s in California, Oregon, and Washington.Crossref | GoogleScholarGoogle Scholar |

Hankins D (2021) Reading the landscape for fire. Bay Nature, 3 January 2021. Available at https://baynature.org/article/reading-the-landscape-for-fire/ [accessed 24 August 2021]

Hantson S, Andela N, Goulden ML, Randerson JT (2022) Human-ignited fires result in more extreme fire behavior and ecosystem impacts. Nature Communications 13, 2717
Human-ignited fires result in more extreme fire behavior and ecosystem impacts.Crossref | GoogleScholarGoogle Scholar |

Harley FW (1918) Letter to Rider re: Klamath Fires, Klamath National Forest. Available at https://www.karuk.us/images/docs/dnr/FWHarley_USFSRanger_1918_OrleansRD.pdf

Harling W (2015) Learning together burning together. Wildland Fire 24, 26–30.

Hart JF (2003) ‘The Changing Scale of American Agriculture.’ 287 pp. (University of Virginia Press: Charlottesville, VA, USA)

Hartter J, Hamilton LC, Ducey MJ, Boag AE, Salerno JD, Christoffersen ND, Oester PT, Palace MW, Stevens FR (2020) Finding common ground: agreement on increasing wildfire risk crosses political lines. Environmental Research Letters 15, 065002
Finding common ground: agreement on increasing wildfire risk crosses political lines.Crossref | GoogleScholarGoogle Scholar |

Hatchett BJ, Koshkin AL, Guirguis K, Rittger K, Nolin AW, Heggli A, Rhoades AM, East AE, Siirila‐Woodburn ER, Brandt WT, Gershunov A, Haleakala K (2023) Midwinter dry spells amplify post‐fire snowpack decline. Geophysical Research Letters 50,
Midwinter dry spells amplify post‐fire snowpack decline.Crossref | GoogleScholarGoogle Scholar |

Heyerdahl EK, Morgan P, Riser JP (2008) Multi‐season climate synchronized historical fires in dry forests (1650–1900), northern Rockies, USA. Ecology 89, 705–716.
Multi‐season climate synchronized historical fires in dry forests (1650–1900), northern Rockies, USA.Crossref | GoogleScholarGoogle Scholar |

Heyerdahl EK, Loehman RA, Falk DA (2019) A multi-century history of fire regimes along a transect of mixed-conifer forests in central Oregon, USA. Canadian Journal of Forest Research 49, 76–86.
A multi-century history of fire regimes along a transect of mixed-conifer forests in central Oregon, USA.Crossref | GoogleScholarGoogle Scholar |

Holden ZA, Swanson A, Luce CH, Jolly WM, Maneta M, Oyler JW, Warren DA, Parsons R, Affleck D (2018) Decreasing fire season precipitation increased recent western US forest wildfire activity. Proceedings of the National Academy of Sciences 115, E8349–E8357.
Decreasing fire season precipitation increased recent western US forest wildfire activity.Crossref | GoogleScholarGoogle Scholar |

Hua L, Shao G (2017) The progress of operational forest fire monitoring with infrared remote sensing. Journal of Forestry Research 28, 215–229.
The progress of operational forest fire monitoring with infrared remote sensing.Crossref | GoogleScholarGoogle Scholar |

Hunter ME, Taylor MH (2022) The economic value of fuel treatments: a review of the recent literature for fuel treatment planning. Forests 13, 2042
The economic value of fuel treatments: a review of the recent literature for fuel treatment planning.Crossref | GoogleScholarGoogle Scholar |

Huntsinger L, McCaffrey S (1995) A forest for the trees: forest management and the Yurok environment, 1850 to 1994. American Indian Culture and Research Journal 19, 155–192.
A forest for the trees: forest management and the Yurok environment, 1850 to 1994.Crossref | GoogleScholarGoogle Scholar |

Johanson CM, Fu Q (2009) Hadley Cell widening: model simulations versus observations. Journal of Climate 22, 2713–2725.
Hadley Cell widening: model simulations versus observations.Crossref | GoogleScholarGoogle Scholar |

Johnston-Dodds K (2002) ‘Early California laws and policies related to California Indians.’ 55 pp. (California Research Bureau: Sacramento, CA: CRB-02-014)

Jolly WM, Cochrane MA, Freeborn PH, Holden ZA, Brown TJ, Williamson GJ, Bowman DMJS (2015) Climate-induced variations in global wildfire danger from 1979 to 2013. Nature Communications 6, 7537
Climate-induced variations in global wildfire danger from 1979 to 2013.Crossref | GoogleScholarGoogle Scholar |

Kane VR, Bartl-Geller BN, North MP, Kane JT, Lydersen JM, Jeronimo SMA, Collins BM, Monika Moskal L (2019) First-entry wildfire can create opening and tree clump patterns characteristic of resilient forests. Forest Ecology and Management 454, 117659
First-entry wildfire can create opening and tree clump patterns characteristic of resilient forests.Crossref | GoogleScholarGoogle Scholar |

Kasperson R (2014) Four questions for risk communication. Journal of Risk Research 17, 1233–1239.
Four questions for risk communication.Crossref | GoogleScholarGoogle Scholar |

Keeley JE (2002) Native American impacts on fire regimes of the California coastal ranges. Journal of Biogeography 29, 303–320.
Native American impacts on fire regimes of the California coastal ranges.Crossref | GoogleScholarGoogle Scholar |

Keeley JE (2009) Ecological foundations for fire management in North American forest and shrubland ecosystems. (US Department of Agriculture, Forest Service, Pacific Northwest Research Station: Portland, OR, USA).

Keeley JE, Keeley SC (1981) Post‐fire regeneration of southern California chaparral. American Journal of Botany 68, 524–30.
Post‐fire regeneration of southern California chaparral.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, Safford HD (2016) Fire as an ecosystem process. In ‘Ecosystems of California’. (Eds HA Mooney, E Zavaleta) pp. 27–45. (University of California Press: Berkeley, CA, USA)

Keeley JE, Syphard AD (2018) Historical patterns of wildfire ignition sources in California ecosystems. International Journal of Wildland Fire 27, 781–799.
Historical patterns of wildfire ignition sources in California ecosystems.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, Syphard AD (2019) Twenty-first century California, USA, wildfires: fuel-dominated vs. wind-dominated fires. Fire Ecology 15, 24
Twenty-first century California, USA, wildfires: fuel-dominated vs. wind-dominated fires.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, Syphard AD (2021) Large California wildfires: 2020 fires in historical context. Fire Ecology 17, 22
Large California wildfires: 2020 fires in historical context.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, van Mantgem P, Falk DA (2019) Fire, climate and changing forests. Nature Plants 5, 774–775.
Fire, climate and changing forests.Crossref | GoogleScholarGoogle Scholar |

Keeley JE, Guzman-Morales J, Gershunov A, Syphard AD, Cayan D, Pierce DW, Flannigan M, Brown TJ (2021) Ignitions explain more than temperature or precipitation in driving Santa Ana wind fires. Science Advances 7, eabh2262
Ignitions explain more than temperature or precipitation in driving Santa Ana wind fires.Crossref | GoogleScholarGoogle Scholar |

Kendall MG (1975) ‘Rank correlation methods.’ (Oxford University Press: New York, NY, USA)

Kerlin K (2020) Rethinking wildfire cultural burning and the art of not fighting fire. UC Davis News. 1 October 2020. Available at https://www.ucdavis.edu/climate/news/rethinking-wildfire [accessed 2 May 2021]

Kimmerer RW, Lake FK (2001) The role of Indigenous burning in land management. Journal of Forestry 99, 36–41.
The role of Indigenous burning in land management.Crossref | GoogleScholarGoogle Scholar |

Kitzberger T, Falk DA, Westerling AL, Swetnam TW (2017) Direct and indirect climate controls predict heterogeneous early-mid 21st century wildfire burned area across western and boreal North America. PLoS One 12, e0188486
Direct and indirect climate controls predict heterogeneous early-mid 21st century wildfire burned area across western and boreal North America.Crossref | GoogleScholarGoogle Scholar |

Knight CA, Anderson L, Bunting MJ, Champagne M, Clayburn RM, Crawford JN, Klimaszewski-Patterson A, Knapp EE, Lake FK, Mensing SA, Wahl D, Wanket J, Watts-Tobi A, Potts MD, Battles JJ (2022) Land management explains major trends in forest structure and composition over the last millennium in California’s Klamath Mountains. Proceedings of the National Academy of Sciences 119, e2116264119
Land management explains major trends in forest structure and composition over the last millennium in California’s Klamath Mountains.Crossref | GoogleScholarGoogle Scholar |

Kolden CA (2019) We’re not doing enough prescribed fire in the western United States to mitigate wildfire risk. Fire 22, 30
We’re not doing enough prescribed fire in the western United States to mitigate wildfire risk.Crossref | GoogleScholarGoogle Scholar |

Lake FK (2013) Historical and cultural fires, tribal management and research issues in Northern California: trails, fires and tribulations. Occasion: Interdisciplinary Studies in the Humanities 5, 1–22.

Landrum L, Otto-Bliesner BL, Wahl ER, Conley A, Lawrence PJ, Rosenbloom N, Teng H (2013) Last millennium climate and its variability in CCSM4. Journal of Climate 26, 1085–1111.
Last millennium climate and its variability in CCSM4.Crossref | GoogleScholarGoogle Scholar |

LAO (Legislative Analyst’s Office) (2018) The 2018-19 Budget: Fire Recovery Proposals. Available at https://lao.ca.gov/Publications/Report/3767

Lepley K, Touchan R, Meko D, Shamir E, Graham R, Falk D (2020) A multi-century Sierra Nevada snowpack reconstruction modeled using upper-elevation coniferous tree rings (California, USA). The Holocene 30, 1266–1278.
A multi-century Sierra Nevada snowpack reconstruction modeled using upper-elevation coniferous tree rings (California, USA).Crossref | GoogleScholarGoogle Scholar |

Leverkus AB, Thorn S, Lindenmayer DB, Pausas JG (2020) Wildfire debate needs science, not politics. Science 370, 416–417.
Wildfire debate needs science, not politics.Crossref | GoogleScholarGoogle Scholar |

Levine JI, Collins BM, Steel ZL, de Valpine P, Stephens SL (2022) Higher incidence of high-severity fire in and near industrially managed forests. Frontiers in Ecology and the Environment 20, 397–404.
Higher incidence of high-severity fire in and near industrially managed forests.Crossref | GoogleScholarGoogle Scholar |

Lightfoot KG, Cuthrell RQ (2015) Anthropogenic burning and the Anthropocene in late-Holocene California. The Holocene 25, 1581–1587.
Anthropogenic burning and the Anthropocene in late-Holocene California.Crossref | GoogleScholarGoogle Scholar |

Lightfoot KG, Cuthrell RQ, Boone CM, Byrne R, Chavez AS, Collins L, Cowart A, Evett RR, Fine PVA, Gifford-Gonzalez D, Hylkema MG, Lopez V, Misiewicz TM, Reid REB (2013) Anthropogenic burning on the Central California Coast in Late Holocene and early historical times: findings, implications, and future directions. California Archaeology 5, 371–390.
Anthropogenic burning on the Central California Coast in Late Holocene and early historical times: findings, implications, and future directions.Crossref | GoogleScholarGoogle Scholar |

Lindsay B (2012) ‘Murder State: California’s Native American Genocide, 1846-1873.’ (University of Nebraska Press: NE, USA)

Littell JS, McKenzie D, Peterson DL, Westerling AL (2009) Climate and wildfire area burned in western U.S. ecoprovinces, 1916–2003. Ecological Applications 19, 1003–1021.
Climate and wildfire area burned in western U.S. ecoprovinces, 1916–2003.Crossref | GoogleScholarGoogle Scholar |

Littell JS, Peterson DL, Riley KL, Liu Y, Luce CH (2016) A review of the relationships between drought and forest fire in the United States. Global Change Biology 22, 2353–2369.
A review of the relationships between drought and forest fire in the United States.Crossref | GoogleScholarGoogle Scholar |

Liu Y (2016) Responses of dead forest fuel moisture to climate change. Ecohydrology 10, e1760
Responses of dead forest fuel moisture to climate change.Crossref | GoogleScholarGoogle Scholar |

Ljungqvist FC, Krusic PJ, Brattström G, Sundqvist HS (2012) Northern Hemisphere temperature patterns in the last 12 centuries. Climate of the Past 8, 227–249.
Northern Hemisphere temperature patterns in the last 12 centuries.Crossref | GoogleScholarGoogle Scholar |

Loisel J, MacDonald GM, Thomson MJ (2017) Little Ice Age climatic erraticism as an analogue for future enhanced hydroclimatic variability across the American Southwest. PLoS One 12, e0186282
Little Ice Age climatic erraticism as an analogue for future enhanced hydroclimatic variability across the American Southwest.Crossref | GoogleScholarGoogle Scholar |

Long JW, Anderson MK, Quinn-Davidson L, Goode R, Lake FW, Skinner CN (2016) Restoring California Black Oak Ecosystems to Promote Tribal Values and Wildlife. General Technical Report, PSW-GTR-252. (USFS, Pacific Southwest Research Station: Albany, CA, USA)

Long JW, Lake FK, Goode RW (2021) The Importance of Indigenous cultural burning in forested regions of the Pacific West. Forest Ecology and Management 500, 119597
The Importance of Indigenous cultural burning in forested regions of the Pacific West.Crossref | GoogleScholarGoogle Scholar |

Loomis, E (2017) ‘Forests and logging in the United States.’ (Oxford Research Encyclopedia of American History)
| Crossref |

Lorimer CG, Porter DJ, Madej MA, Stuart JD, Veirs Jr SD, Norman SP, O’Hara KL, Libby WJ (2009) Presettlement and modern disturbance regimes in coast redwood forests: implications for the conservation of old-growth stands. Forest Ecology and Management 258, 1038–1054.
Presettlement and modern disturbance regimes in coast redwood forests: implications for the conservation of old-growth stands.Crossref | GoogleScholarGoogle Scholar |

Luković J, Chiang JCH, Blagojević D, Sekulić A (2021) A later onset of the rainy season in California. Geophysical Research Letters 48, e2020GL090350
A later onset of the rainy season in California.Crossref | GoogleScholarGoogle Scholar |

Ma W, Zhai L, Pivovaroff A, Shuman J, Buotte P, Ding J, Christoffersen B, Knox R, Moritz M, Fisher RA, Koven CD, Kueppers L, Xu C (2021) Assessing climate change impacts on live fuel moisture and wildfire risk using a hydrodynamic vegetation model. Biogeosciences 18, 4005–4020.
Assessing climate change impacts on live fuel moisture and wildfire risk using a hydrodynamic vegetation model.Crossref | GoogleScholarGoogle Scholar |

Madley B (2016) ‘An American Genocide, The United States and the California Catastrophe, 1846–1873.’ (Yale University Press: Yale)

Margolis EQ, Swetnam TW, Allen CD (2011) Historical stand-replacing fire in upper montane forests of the Madrean Sky Islands and Mogollon Plateau, Southwestern USA. Fire Ecology 7, 88–107.
Historical stand-replacing fire in upper montane forests of the Madrean Sky Islands and Mogollon Plateau, Southwestern USA.Crossref | GoogleScholarGoogle Scholar |

Margolis EQ, Guiterman CH, Chavardès RD, Coop JD, Copes‐Gerbitz K, Dawe DA, Falk DA, Johnston JD, Larson E, Li H, Marschall JM, Naficy CE, Naito AT, Parisien M, Parks SA, Portier J, Poulos HM, Robertson KM, Speer JH, Stambaugh M, Swetnam TW, Tepley AJ, Thapa I, Allen CD, Bergeron Y, Daniels LD, Fulé PZ, Gervais D, Girardin MP, Harley GL, Harvey JE, Hoffman KM, Huffman JM, Hurteau MD, Johnson LB, Lafon CW, Lopez MK, Maxwell RS, Meunier J, North M, Rother MT, Schmidt MR, Sherriff RL, Stachowiak LA, Taylor A, Taylor EJ, Trouet V, Villarreal ML, Yocom LL, Arabas KB, Arizpe AH, Arseneault D, Tarancón AA, Baisan C, Bigio E, Biondi F, Cahalan GD, Caprio A, Cerano‐Paredes J, Collins BM, Dey DC, Drobyshev I, Farris C, Fenwick MA, Flatley W, Floyd ML, Gedalof Z, Holz A, Howard LF, Huffman DW, Iniguez J, Kipfmueller KF, Kitchen SG, Lombardo K, McKenzie D, Merschel AG, Metlen KL, Minor J, O'Connor CD, Platt L, Platt WJ, Saladyga T, Stan AB, Stephens S, Sutheimer C, Touchan R, Weisberg PJ (2022) The North American tree‐ring fire‐scar network. Ecosphere 13,
The North American tree‐ring fire‐scar network.Crossref | GoogleScholarGoogle Scholar |

Marks-Block T, Lake FK, Curran LM (2019) Effects of understory fire management treatments on California hazelnut, an ecocultural resource of the Karuk and Yurok Indians in the Pacific Northwest. Forest Ecology and Management 450, 117517
Effects of understory fire management treatments on California hazelnut, an ecocultural resource of the Karuk and Yurok Indians in the Pacific Northwest.Crossref | GoogleScholarGoogle Scholar |

McDowell NG, Sapes G, Pivovaroff A, et al. (2022) Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit. Nature Reviews Earth & Environment 3, 294–308.
Mechanisms of woody-plant mortality under rising drought, CO2 and vapour pressure deficit.Crossref | GoogleScholarGoogle Scholar |

McEvoy DJ, Pierce DW, Kalansky JF, Cayan DR, Abatzoglou JT (2020) Projected changes in reference evapotranspiration in California and Nevada: implications for drought and wildland fire danger. Earth’s Future 8, e2020EF001736
Projected changes in reference evapotranspiration in California and Nevada: implications for drought and wildland fire danger.Crossref | GoogleScholarGoogle Scholar |

McIntyre PJ, Thorne JH, Dolanc CR, Flint AL, Flint LE, Kelly M, Ackerly DD (2015) Twentieth-century shifts in forest structure in California: denser forests, smaller trees, and increased dominance of oaks. Proceedings of the National Academy of Sciences 112, 1458–1463.
Twentieth-century shifts in forest structure in California: denser forests, smaller trees, and increased dominance of oaks.Crossref | GoogleScholarGoogle Scholar |

McIver CP, Meek JP, Scudder MG, Sorenson CB, Morgan TA, Christensen GA (2015) California’s Forest Products Industry and Timber Harvest, 2012. PNW-GTR-908. (The US Department of Agriculture: Corvallis, OR, USA)

McKelvey KS, Busse KK (1996) Twentieth-century fire patterns on forest service lands. In ‘Sierra Nevada Ecosystem Project, Final Report to Congress, Vol. II, Assessments and Scientific Basis for Management Options’. Report No. 37. pp. 1119–1138. (University of California, Centers for Water and Wildland Resources: Davis, CA, USA)

McKenzie D, Littell JS (2017) Climate change and the eco‐hydrology of fire: will area burned increase in a warming western USA? Ecological Applications 27, 26–36.
Climate change and the eco‐hydrology of fire: will area burned increase in a warming western USA?Crossref | GoogleScholarGoogle Scholar |

Meyer MD (2015) Forest fire severity patterns of resource objective wildfires in the southern Sierra Nevada. Journal of Forestry 113, 49–56.
Forest fire severity patterns of resource objective wildfires in the southern Sierra Nevada.Crossref | GoogleScholarGoogle Scholar |

Meyer MD, North MP (2019) Natural range of variation of red fir and subalpine forests in the Sierra Nevada bioregion. Gen Tech Rep PSW-GTR-263. (USDA Forest Service, Pacific South-west Research Station: Albany, CA, USA)

Miller JD, Safford H (2012) Trends in wildfire severity: 1984 to 2010 in the Sierra Nevada, Modoc Plateau, and Southern Cascades, California, U.S.A. Fire Ecology 8, 41–57.
Trends in wildfire severity: 1984 to 2010 in the Sierra Nevada, Modoc Plateau, and Southern Cascades, California, U.S.A.Crossref | GoogleScholarGoogle Scholar |

Miller JD, Safford HD, Crimmins M, Thode AE (2009) Quantitative evidence for increasing forest fire severity in the Sierra Nevada and Southern Cascade Mountains, California and Nevada, USA. Ecosystems 12, 16–32.
Quantitative evidence for increasing forest fire severity in the Sierra Nevada and Southern Cascade Mountains, California and Nevada, USA.Crossref | GoogleScholarGoogle Scholar |

Miller C, Abatzoglou J, Brown T, Syphard AD (2011) Wilderness fire management in a changing environment. In ‘The Landscape Ecology of Fire’ (Eds D McKenzie, C Miller, D Falk) pp. 269–294. (Springer: Dordrecht, Netherlands)

Miller JD, Collins BM, Lutz JA, Stephens SL, Van Wagtendonk JW, Yasuda DA (2012) Differences in wildfires among ecoregions and land management agencies in the Sierra Nevada region, California, USA. Ecosphere 3, art80
Differences in wildfires among ecoregions and land management agencies in the Sierra Nevada region, California, USA.Crossref | GoogleScholarGoogle Scholar |

Moreira F, Ascoli D, Safford HD, et al. (2020) Wildfire management in Mediterranean-type regions: paradigm change needed. Environmental Research Letters 15, 011001
Wildfire management in Mediterranean-type regions: paradigm change needed.Crossref | GoogleScholarGoogle Scholar |

Natural Resources Canada (2021) ‘Cost of wildland fire protection.’ (Natural Resources Canada) Available at https://34c031f8-c9fd-4018-8c5a-4159cdff6b0d-cdn-endpoint.azureedge.net/-/media/calfire-website/our-impact/fire-statistics/featured-items/top20_acres.pdf?rev=be2a6ff85932475e99d70fa9458dca79&hash=A355A978818640DFACE7993C432ABF81 [accessed 8 March 2021]

Neely N (2019) ‘Alta California: From San Diego to San Francisco, A Journey on Foot to Rediscover the Golden State.’ (Counterpoint Press: Berkeley, CA, USA)

North M, Brough A, Long J, Collins B, Bowden P, Yasuda D, Miller J, Sugihara N (2015a) Constraints on mechanized treatment significantly limit mechanical fuels reduction extent in the Sierra Nevada. Journal of Forestry 113, 40–48.
Constraints on mechanized treatment significantly limit mechanical fuels reduction extent in the Sierra Nevada.Crossref | GoogleScholarGoogle Scholar |

North MP, Stephens SL, Collins BM, Agee JK, Aplet G, Franklin JF, Fulé PZ (2015b) Reform forest fire management. Science 349, 1280–1281.
Reform forest fire management.Crossref | GoogleScholarGoogle Scholar |

North MP, Collins BM, Safford HD, Stephenson NL (2016) Montane forests. In ‘Ecosystems of California’. (Eds HA Mooney, E Zavaleta) pp. 553–577. (University of California Press: Berkeley, CA, USA)

North MP, Tompkins RE, Bernal AA, Collins BM, Stephens SL, York RA (2022) Operational resilience in western US frequent-fire forests. Forest Ecology and Management 507, 120004
Operational resilience in western US frequent-fire forests.Crossref | GoogleScholarGoogle Scholar |

O’Connor CD, Falk DA, Lynch AM, Swetnam TW (2014) Fire severity, size, and climate associations diverge from historical precedent along an ecological gradient in the Pinaleño Mountains, Arizona, USA. Forest Ecology and Management 329, 264–278.
Fire severity, size, and climate associations diverge from historical precedent along an ecological gradient in the Pinaleño Mountains, Arizona, USA.Crossref | GoogleScholarGoogle Scholar |

O’Connor CD, Falk DA, Lynch AM, Swetnam TW, Wilcox CP (2017) Disturbance and productivity interactions mediate stability of forest composition and structure. Ecological Applications 27, 900–915.
Disturbance and productivity interactions mediate stability of forest composition and structure.Crossref | GoogleScholarGoogle Scholar |

Ornduff R, Faber PM, Wolf TK (2003) ‘Introduction to California plant life’, Revised edn. (Univ of California Press: Berkeley, CA, USA)

Parks SA, Abatzoglou JT (2020) Warmer and drier fire seasons contribute to increases in area burned at high severity in western US forests from 1985 to 2017. Geophysical Research Letters 47, e2020GL089858
Warmer and drier fire seasons contribute to increases in area burned at high severity in western US forests from 1985 to 2017.Crossref | GoogleScholarGoogle Scholar |

Pennick McIver C, Cook PS, Becker DR (2021) The fiscal burden of wildfires: State expenditures and funding mechanisms for wildfire suppression in the Western US and implications for federal policy. State and Local Government Review 53, 337–351.
The fiscal burden of wildfires: State expenditures and funding mechanisms for wildfire suppression in the Western US and implications for federal policy.Crossref | GoogleScholarGoogle Scholar |

Perry DA, Hessburg PF, Skinner CN, Spies TA, Stephens SL, Taylor AH, Franklin JF, McComb B, Riegel G (2011) The ecology of mixed severity fire regimes in Washington, Oregon, and Northern California. Forest Ecology and Management 262, 703–717.
The ecology of mixed severity fire regimes in Washington, Oregon, and Northern California.Crossref | GoogleScholarGoogle Scholar |

Pierce DW, Cayan DR (2013) The uneven response of different snow measures to human-induced climate warming. Journal of Climate 26, 4148–4167.
The uneven response of different snow measures to human-induced climate warming.Crossref | GoogleScholarGoogle Scholar |

Pierce DW, Das T, Cayan DR, Maurer EP, Miller NL, Bao Y, Kanamitsu M, Yoshimura K, Snyder MA, Sloan LC, Franco G, Tyree M (2013) Probabilistic estimates of future changes in California temperature and precipitation using statistical and dynamical downscaling. Climate Dynamics 40, 839–856.
Probabilistic estimates of future changes in California temperature and precipitation using statistical and dynamical downscaling.Crossref | GoogleScholarGoogle Scholar |

Pierce DW, Kalansky JF, Cayan DR (2018) ‘Climate, Drought, and Sea Level Rise Scenarios for the Fourth California Climate Assessment’. Publication Number: CNRA-CEC-2018-006. (California’s Fourth Climate Change Assessment, California Energy Commission: La Jolla, CA, USA)

Polade SD, Pierce DW, Cayan DR, Gershunov A, Dettinger MD (2014) The key role of dry days in changing regional climate and precipitation regimes. Scientific Reports 4, 4364
The key role of dry days in changing regional climate and precipitation regimes.Crossref | GoogleScholarGoogle Scholar |

Polade SD, Gershunov A, Cayan DR, Dettinger MD, Pierce DW (2017) Precipitation in a warming world: Assessing projected hydro-climate changes in California and other Mediterranean climate regions. Scientific Reports 7, 10783
Precipitation in a warming world: Assessing projected hydro-climate changes in California and other Mediterranean climate regions.Crossref | GoogleScholarGoogle Scholar |

Quinn-Davidson LN, Varner JM (2012) Impediments to prescribed fire across agency, landscape and manager: an example from northern California. International Journal of Wildland Fire 21, 210–218.
Impediments to prescribed fire across agency, landscape and manager: an example from northern California.Crossref | GoogleScholarGoogle Scholar |

Radeloff VC, Helmers DP, Kramer HA, Mockrin MH, Alexandre PM, Bar-Massada A, Butsic V, Hawbaker TJ, Martinuzzi S, Syphard AD, Stewart SI (2018) Rapid growth of the US wildland-urban interface raises wildfire risk. Proceedings of the National Academy of Sciences 115, 3314–3319.
Rapid growth of the US wildland-urban interface raises wildfire risk.Crossref | GoogleScholarGoogle Scholar |

Restaino CR, Safford HD (2018) Fire and climate change. In ‘Fire in California’s ecosystems’, 2nd edn. (Eds J Van Wagtendonk, NG Sugihara, SL Stephens, AE Thode, KE Shaffer, J Fites-Kaufman) pp. 493–505. (University of California Press: Berkeley, CA, USA)

Riley KL, Abatzoglou JT, Grenfell IC, Klene AE, Heinsch FA (2013) The relationship of large fire occurrence with drought and fire danger indices in the western USA, 1984-2008: the role of temporal scale. International Journal of Wildland Fire 22, 894–909.
The relationship of large fire occurrence with drought and fire danger indices in the western USA, 1984-2008: the role of temporal scale.Crossref | GoogleScholarGoogle Scholar |

Ruthrof KX, Fontaine JB, Matusick G, Breshears DD, Law DJ, Powell S, Hardy G (2016) How drought-induced forest die-off alters microclimate and increases fuel loadings and fire potentials. International Journal of Wildland Fire 25, 819–830.
How drought-induced forest die-off alters microclimate and increases fuel loadings and fire potentials.Crossref | GoogleScholarGoogle Scholar |

Ryan KC, Knapp EE, Varner JM (2013) Prescribed fire in North American forests and woodlands: history, current practice, and challenges. Frontiers in Ecology and the Environment 11, e15–e24.
Prescribed fire in North American forests and woodlands: history, current practice, and challenges.Crossref | GoogleScholarGoogle Scholar |

Safford HD, Stevens JT (2017) Natural Range of Variation (NRV) for yellow pine and mixed conifer forests in the Sierra Nevada, southern Cascades, and Modoc and Inyo National Forests, California, USA. General Technical Report PSW-GTR-256. 229 p. (USDA Forest Service, Pacific Southwest Research Station: Albany, CA, USA)

Safford HD, Van de Water KM (2014) Using Fire Return Interval Departure (FRID) analysis to map spatial and temporal changes in fire frequency on National Forest lands in California. Research Paper PSW-RP-266. (USDA Forest Service, Pacific Southwest Research Station: Albany, CA, USA)

Safford HD, North MP, Meyer MD (2012) Climate change and the relevance of historical forest conditions. In ‘Managing Sierra Nevada forests’. (Ed. MP North) General Technical Report PSW-GTR-237. pp. 23–46. (USDA Forest Service Pacific Southwest Research Station: Albany, CA, USA)

Safford HD, Underwood EC, Molinari NA (2018) Managing chaparral resources on public lands. In ‘Valuing chaparral: Ecological, socioeconomic, and management perspectives’. (Eds EC Underwood, HD Safford, NA Molinari, JE Keeley) pp. 411–448. (Springer: Cham, Switzerland)

Safford HD, Butz RJ, Bohlman GN, Coppoletta M, Estes BL, Gross SE, Merriam KE, Meyer MD, Molinari NA, Wuenschel A (2021) Fire ecology of the North American Mediterranean-climate zone. In ‘Fire ecology and management of US forested ecosystems: past, present, and future. Managing Forest Ecosystems. Vol. 39’. (Eds B Collins, CH Greenberg) (Springer: Cham, Switzerland)
| Crossref |

Safford HD, Paulson AK, Steel ZL, Young DJ, Wayman RB (2022) The 2020 California fire season: A year like no other, a return to the past, or a harbinger of the future? Global Ecology and Biogeography 31, 2005–2025.
The 2020 California fire season: A year like no other, a return to the past, or a harbinger of the future?Crossref | GoogleScholarGoogle Scholar |

Salzer MW, Hughes MK, Bunn AG, Kipfmueller KF (2009) Recent unprecedented tree-ring growth in bristlecone pine at the highest elevations and possible causes. Proceedings of the National Academy of Sciences 106, 20348–20353.
Recent unprecedented tree-ring growth in bristlecone pine at the highest elevations and possible causes.Crossref | GoogleScholarGoogle Scholar |

Salzer MW, Bunn AG, Graham NE, Hughes MK (2014) Five millennia of paleotemperature from tree-rings in the Great Basin, USA. Climate Dynamics 42, 1517–1526.
Five millennia of paleotemperature from tree-rings in the Great Basin, USA.Crossref | GoogleScholarGoogle Scholar |

Schoennagel T, Balch JK, Brenkert-Smith H, Dennison PE, Harvey BJ, Krawchuk MA, Mietkiewicz N, Morgan P, Moritz MA, Rasker R, Turner MG, Whitlock C (2017) Adapt to more wildfire in western North American forests as climate changes. Proceedings of the National Academy of Sciences 114, 4582–4590.
Adapt to more wildfire in western North American forests as climate changes.Crossref | GoogleScholarGoogle Scholar |

Scholl AE, Taylor AH (2010) Fire regimes, forest change, and self‐organization in an old‐growth mixed‐conifer forest, Yosemite National Park, USA. Ecological Applications 20, 362–380.
Fire regimes, forest change, and self‐organization in an old‐growth mixed‐conifer forest, Yosemite National Park, USA.Crossref | GoogleScholarGoogle Scholar |

Schultz CA, McCaffrey SM, Huber-Stearns HR (2019) Policy barriers and opportunities for prescribed fire application in the western United States. International Journal of Wildland Fire 28, 874–884.
Policy barriers and opportunities for prescribed fire application in the western United States.Crossref | GoogleScholarGoogle Scholar |

Schwartz MW, Syphard AD (2021) Fitting the solutions to the problems in managing extreme wildfire in California. Environmental Research Communications 3, 081005
Fitting the solutions to the problems in managing extreme wildfire in California.Crossref | GoogleScholarGoogle Scholar |

Schwartz MW, Butt N, Dolanc CR, Holguin A, Moritz MA, North MP, Safford HD, Stephenson NL, Thorne JH, van Mantgem PJ (2015) Increasing elevation of fire in the Sierra Nevada and implications for forest change. Ecosphere 6, 121
Increasing elevation of fire in the Sierra Nevada and implications for forest change.Crossref | GoogleScholarGoogle Scholar |

Seager R, Hooks A, Williams AP, Cook B, Nakamura J, Henderson N (2015) Climatology, variability, and trends in the US vapor pressure deficit, an important fire-related meteorological quantity. Journal of Applied Meteorology and Climatology 54, 1121–1141.
Climatology, variability, and trends in the US vapor pressure deficit, an important fire-related meteorological quantity.Crossref | GoogleScholarGoogle Scholar |

Short KC (2021) ‘Spatial wildfire occurrence data for the United States, 1992-2018 [FPA_FOD_20210617]’, 5th edn. (Forest Service Research Data Archive: Fort Collins, CO, USA)
| Crossref |

Skinner CN, Abbott CS, Fry DL, Stephens SL, Taylor AH, Trouet V (2009) Human and climatic influences on fire occurrence in California’s north coast range, USA. Fire Ecology 5, 76–99.
Human and climatic influences on fire occurrence in California’s north coast range, USA.Crossref | GoogleScholarGoogle Scholar |

Sleeter BM, Wilson TS, Soulard CE, Liu J (2011) Estimation of late twentieth century land-cover change in California. Environmental Monitoring and Assessment 173, 251–266.
Estimation of late twentieth century land-cover change in California.Crossref | GoogleScholarGoogle Scholar |

Smith SJ, Edmonds J, Hartin CA, Mundra A, Calvin K (2015) Near-term acceleration in the rate of temperature change. Nature Climate Change 5, 333–336.
Near-term acceleration in the rate of temperature change.Crossref | GoogleScholarGoogle Scholar |

Steel ZL, Safford HD, Viers JH (2015) The fire frequency-severity relationship and the legacy of fire suppression in California forests. Ecosphere 6, 8
The fire frequency-severity relationship and the legacy of fire suppression in California forests.Crossref | GoogleScholarGoogle Scholar |

Steel ZL, Koontz MJ, Safford HD (2018) The changing landscape of wildfire: Burn pattern trends and implications for California’s yellow pine and mixed conifer forests. Landscape Ecology 33, 1159–1176.
The changing landscape of wildfire: Burn pattern trends and implications for California’s yellow pine and mixed conifer forests.Crossref | GoogleScholarGoogle Scholar |

Steelman TA, McCaffrey S (2013) Best practices in risk and crisis communication: implications for natural hazards management. Natural Hazards 65, 683–705.
Best practices in risk and crisis communication: implications for natural hazards management.Crossref | GoogleScholarGoogle Scholar |

Stephens SL, Fry DL (2005) Fire history in coast redwood stands in the northeastern Santa Cruz Mountains, California. Fire Ecology 1, 2–19.
Fire history in coast redwood stands in the northeastern Santa Cruz Mountains, California.Crossref | GoogleScholarGoogle Scholar |

Stephens SL, Gill SJ (2005) Forest structure and mortality in an old-growth Jeffrey pine-mixed conifer forest in north-western Mexico. Forest Ecology and Management 205, 15–28.
Forest structure and mortality in an old-growth Jeffrey pine-mixed conifer forest in north-western Mexico.Crossref | GoogleScholarGoogle Scholar |

Stephens SL, Moghaddas JJ (2005) Experimental fuel treatment impacts on forest structure, potential fire behavior, and predicted tree mortality in a California mixed conifer forest. Forest Ecology and Management 215, 21–36.
Experimental fuel treatment impacts on forest structure, potential fire behavior, and predicted tree mortality in a California mixed conifer forest.Crossref | GoogleScholarGoogle Scholar |

Stephens SL, Martin RE, Clinton NE (2007) Prehistoric fire area and emissions from California’s forests, woodlands, shrublands, and grasslands. Forest Ecology and Management 251, 205–216.
Prehistoric fire area and emissions from California’s forests, woodlands, shrublands, and grasslands.Crossref | GoogleScholarGoogle Scholar |

Stephens SL, McIver JD, Boerner REJ, Fettig CJ, Fontaine JB, Hartsough BR, Kennedy PL, Schwilk DW (2012) The effects of forest fuel-reduction treatments in the United States. BioScience 62, 549–60.
The effects of forest fuel-reduction treatments in the United States.Crossref | GoogleScholarGoogle Scholar |

Stephens SL, Thompson S, Boisramé G, Collins BM, Ponisio LC, Rakhmatulina E, Steel ZL, Stevens JT, van Wagtendonk JW, Wilkin K (2021) Fire, water, and biodiversity in the Sierra Nevada: a possible triple win. Environmental Research Communications 3, 081004
Fire, water, and biodiversity in the Sierra Nevada: a possible triple win.Crossref | GoogleScholarGoogle Scholar |

Stevens MB, González‐Rouco JF, Beltrami H (2008) North American climate of the last millennium: underground temperatures and model comparison. Journal of Geophysical Research: Earth Surface 113, F01008
North American climate of the last millennium: underground temperatures and model comparison.Crossref | GoogleScholarGoogle Scholar |

Stevens-Rumann CS, Kemp KB, Higuera PE, Harvey BJ, Rother MT, Donato DC, Morgan P, Veblen TT (2018) Evidence for declining forest resilience to wildfires under climate change. Ecology Letters 21, 243–252.
Evidence for declining forest resilience to wildfires under climate change.Crossref | GoogleScholarGoogle Scholar |

Stewart IT, Cayan DR, Dettinger MD (2005) Changes toward earlier streamflow timing across western North America. Journal of Climate 18, 1136–1155.
Changes toward earlier streamflow timing across western North America.Crossref | GoogleScholarGoogle Scholar |

Swain DL (2021) A shorter, sharper rainy season amplifies California wildfire risk. Geophysical Research Letters 48, e2021GL092843
A shorter, sharper rainy season amplifies California wildfire risk.Crossref | GoogleScholarGoogle Scholar |

Swain DL, Langenbrunner B, Neelin JD, Hall A (2018) Increasing precipitation volatility in twenty-first-century California. Nature Climate Change 8, 427–433.
Increasing precipitation volatility in twenty-first-century California.Crossref | GoogleScholarGoogle Scholar |

Swetnam TW (1993) Fire history and climate change in giant sequoia groves. Science 262, 885–889.
Fire history and climate change in giant sequoia groves.Crossref | GoogleScholarGoogle Scholar |

Swetnam TW, Baisan CH, Caprio AC, Brown PM, Touchan R, Anderson RS, Hallett DJ (2009) Multi-millennial fire history of the giant forest, Sequoia National Park, California, USA. Fire Ecology 5, 120–150.
Multi-millennial fire history of the giant forest, Sequoia National Park, California, USA.Crossref | GoogleScholarGoogle Scholar |

Swetnam TW, Farella J, Roos CI, Liebmann MJ, Falk DA, Allen CD (2016) Multiscale perspectives of fire, climate and humans in western North America and the Jemez Mountains, USA. Philosophical Transactions of the Royal Society B: Biological Sciences 371, 20150168
Multiscale perspectives of fire, climate and humans in western North America and the Jemez Mountains, USA.Crossref | GoogleScholarGoogle Scholar |

Syphard AD, Keeley JE (2015) Location, timing and extent of wildfire vary by cause of ignition. International Journal of Wildland Fire 24, 37–47.
Location, timing and extent of wildfire vary by cause of ignition.Crossref | GoogleScholarGoogle Scholar |

Syphard AD, Gershunov A, Lawson DM, Rivera Huerta H, Guzman-Morales J, Jennings MK (2018a) San Diego Wildfires: Drivers of Change and Future Outlook. In ‘San Diego County ecosystems: ecological impacts of climate change on a biodiversity hotspot’. California’s Fourth Climate Change Assessment. Publication number: EXT-CCC4A-2018-010. (Eds MK Jennings, D Cayan, J Kalansky, AD Pairis, et al.) pp. 49–69. (California Energy Commission)

Syphard AD, Brennan TJ, Keeley JE (2018b) Chaparral landscape conversion in southern California. In ‘Valuing chaparral. Ecological, socio-economic, and management perspectives’. (Eds EC Underwood, HD Safford, JE Keeley, N Molinari, JJ Hopper) pp. 311–334. (Springer: New York, NY, USA)

Syphard AD, Brennan TJ, Keeley JE (2019) Extent and drivers of vegetation type conversion in Southern California chaparral. Ecosphere 10, e02796
Extent and drivers of vegetation type conversion in Southern California chaparral.Crossref | GoogleScholarGoogle Scholar |

Taylor AH (2000) Fire regimes and forest changes in mid and upper montane forests of the southern Cascades, Lassen Volcanic National Park, California, USA. Journal of Biogeography 27, 87–104.
Fire regimes and forest changes in mid and upper montane forests of the southern Cascades, Lassen Volcanic National Park, California, USA.Crossref | GoogleScholarGoogle Scholar |

Taylor AH, Beaty RM (2005) Climatic influences on fire regimes in the northern Sierra Nevada mountains, Lake Tahoe Basin, Nevada, USA. Journal of Biogeography 32, 425–438.
Climatic influences on fire regimes in the northern Sierra Nevada mountains, Lake Tahoe Basin, Nevada, USA.Crossref | GoogleScholarGoogle Scholar |

Taylor AH, Skinner CN (2003) Spatial patterns and controls on historical fire regimes and forest structure in the Klamath Mountains. Ecological Applications 13, 704–719.
Spatial patterns and controls on historical fire regimes and forest structure in the Klamath Mountains.Crossref | GoogleScholarGoogle Scholar |

Taylor AH, Trouet V, Skinner CN (2008) Climatic influences on fire regimes in montane forests of the southern Cascades, California, USA. International Journal of Wildland Fire 17, 60–71.
Climatic influences on fire regimes in montane forests of the southern Cascades, California, USA.Crossref | GoogleScholarGoogle Scholar |

Taylor AH, Trouet V, Skinner CN, Stephens S (2016) Socioecological transitions trigger fire regime shifts and modulate fire–climate interactions in the Sierra Nevada, USA, 1600–2015 CE. Proceedings of the National Academy of Sciences 113, 13684–13689.
Socioecological transitions trigger fire regime shifts and modulate fire–climate interactions in the Sierra Nevada, USA, 1600–2015 CE.Crossref | GoogleScholarGoogle Scholar |

Tripp B (2020) Our land was taken. But we still hold the knowledge of how to stop mega-fires. The Guardian, 16 September 2020. Available at https://www.theguardian.com/commentisfree/2020/sep/16/california-wildfires-cultural-burns-indigenous-people [accessed 24 August 2021]

Trouet V, Taylor AH, Wahl ER, Skinner CN, Stephens SL (2010) Fire‐climate interactions in the American West since 1400 CE. Geophysical Research Letters 37, L04702
Fire‐climate interactions in the American West since 1400 CE.Crossref | GoogleScholarGoogle Scholar |

Tubbesing CL, Fry DL, Roller GB, Collins BM, Fedorova VA, Stephens SL, Battles JJ (2019) Strategically placed landscape fuel treatments decrease fire severity and promote recovery in the northern Sierra Nevada. Forest Ecology and Management 436, 45–55.
Strategically placed landscape fuel treatments decrease fire severity and promote recovery in the northern Sierra Nevada.Crossref | GoogleScholarGoogle Scholar |

Ukkola AM, De Kauwe MG, Roderick ML, Abramowitz G, Pitman AJ (2020) Robust future changes in meteorological drought in CMIP6 projections despite uncertainty in precipitation. Geophysical Research Letters 47, e2020GL087820
Robust future changes in meteorological drought in CMIP6 projections despite uncertainty in precipitation.Crossref | GoogleScholarGoogle Scholar |

Van de Water KM, Safford HD (2011) A summary of fire frequency estimates for California vegetation before Euroamerican settlement. Fire Ecology 7, 26–58.
A summary of fire frequency estimates for California vegetation before Euroamerican settlement.Crossref | GoogleScholarGoogle Scholar |

van Mantgem PJ, Falk DA, Williams EC, Das AJ, Stephenson NL (2020) The influence of pre-fire growth patterns on post-fire tree mortality for common conifers in western US parks. International Journal of Wildland Fire 29, 513–518.
The influence of pre-fire growth patterns on post-fire tree mortality for common conifers in western US parks.Crossref | GoogleScholarGoogle Scholar |

Van Wagtendonk JW, Sugihara NG, Stephens SL, Thode AE, Shaffer KE, Fires-Kaufman J (2018) ‘Fire in California’s ecosystems’. 2nd edn. (University of California Press: Berkeley, CA, USA)

Wang D, Guan D, Zhu S, Kinnon MM, Geng G, Zhang Q, Zheng H, Lei T, Shao S, Gong P, Davis SJ (2021) Economic footprint of California wildfires in 2018. Nature Sustainability 4, 252–260.
Economic footprint of California wildfires in 2018.Crossref | GoogleScholarGoogle Scholar |

Wang JA, Randerson JT, Goulden ML, Knight CA, Battles JJ (2022) Losses of tree cover in California driven by increasing fire disturbance and climate stress. AGU Advances 3, e2021AV000654
Losses of tree cover in California driven by increasing fire disturbance and climate stress.Crossref | GoogleScholarGoogle Scholar |

Westerling AL (2016) Increasing western US forest wildfire activity: sensitivity to changes in the timing of spring. Philosophical Transactions of the Royal Society B: Biological Sciences 371, 20150178
Increasing western US forest wildfire activity: sensitivity to changes in the timing of spring.Crossref | GoogleScholarGoogle Scholar |

Westerling AL, Swetnam TW (2003) Interannual to decadal drought and wildfire in the western United States. EOS, Transactions American Geophysical Union 84, 545–555.
Interannual to decadal drought and wildfire in the western United States.Crossref | GoogleScholarGoogle Scholar |

Westerling AL, Cayan DR, Brown TJ, Hall BL, Riddle LG (2004) Climate, Santa Ana winds and autumn wildfires in southern California. EOS, Transactions American Geophysical Union 85, 289–296.
Climate, Santa Ana winds and autumn wildfires in southern California.Crossref | GoogleScholarGoogle Scholar |

Westerling AL, Hidalgo HG, Cayan DR, Swetnam TW (2006) Warming and earlier spring increase western U.S. forest wildfire activity. Science 313, 940–943.
Warming and earlier spring increase western U.S. forest wildfire activity.Crossref | GoogleScholarGoogle Scholar |

Williams AP, Abatzoglou JT, Gershunov A, Guzman-Morales J, Bishop DA, Balch JK, Lettenmaier DP (2019) Observed impacts of anthropogenic climate change on wildfire in California. Earth’s Future 7, 892–910.
Observed impacts of anthropogenic climate change on wildfire in California.Crossref | GoogleScholarGoogle Scholar |

Williams AP, Cook ER, Smerdon JE, Cook BI, Abatzoglou JT, Bolles K, Baek SH, Badger AM, Livneh B (2020) Large contribution from anthropogenic warming to an emerging North American megadrought. Science 368, 314–318.
Large contribution from anthropogenic warming to an emerging North American megadrought.Crossref | GoogleScholarGoogle Scholar |

Williams JN, Safford HD, Enstice N, Steel ZL, Paulson AK (2023) High-severity burned area and proportion exceed historic conditions in Sierra Nevada, California, and adjacent ranges. Ecosphere 14, e4397
High-severity burned area and proportion exceed historic conditions in Sierra Nevada, California, and adjacent ranges.Crossref | GoogleScholarGoogle Scholar |

Williams JN, Quinn-Davidson L, Safford HD, et al. (in press) Overcoming barriers to prescribed fire in the North American Mediterranean Climate Zone. Frontiers in Ecology and the Environment

Williamson MA, Fleishman E, Mac Nally RC, Chambers JC, Bradley BA, Dobkin DS, Board DI, Fogarty FA, Horning N, Leu M, Wohlfeil Zillig M (2020) Fire, livestock grazing, topography, and precipitation affect occurrence and prevalence of cheatgrass (Bromus tectorum) in the central Great Basin, USA. Biological Invasions 22, 663–680.
Fire, livestock grazing, topography, and precipitation affect occurrence and prevalence of cheatgrass (Bromus tectorum) in the central Great Basin, USA.Crossref | GoogleScholarGoogle Scholar |

Young JD, Evans AM, Iniguez JM, Thode A, Meyer MD, Hedwall SJ, McCaffrey S, Shin P, Huang CH (2020) Effects of policy change on wildland fire management strategies: evidence for a paradigm shift in the western US? International Journal of Wildland Fire 29, 857–877.
Effects of policy change on wildland fire management strategies: evidence for a paradigm shift in the western US?Crossref | GoogleScholarGoogle Scholar |

Yuan W, Zheng Y, Piao S, Ciais P, Lombardozzi D, Wang Y, Ryu Y, Chen G, Dong W, Hu Z, Jain AK, Jiang C, Kato E, Li S, Lienert S, Liu S, Nabel JEMS, Qin Z, Quine T, Sitch S, Smith WK, Wang F, Wu C, Xiao Z, Yang S (2019) Increased atmospheric vapor pressure deficit reduces global vegetation growth. Science Advances 5, eaax1396
Increased atmospheric vapor pressure deficit reduces global vegetation growth.Crossref | GoogleScholarGoogle Scholar |

Zamora-Reyes D, Black B, Trouet V (2022) Enhanced winter, spring, and summer hydroclimate variability across California from 1940 to 2019. International Journal of Climatology 42, 4940–4952.
Enhanced winter, spring, and summer hydroclimate variability across California from 1940 to 2019.Crossref | GoogleScholarGoogle Scholar |

Zhuang Y, Fu R, Santer BD, Dickinson RE, Hall A (2021) Quantifying contributions of natural variability and anthropogenic forcings on increased fire weather risk over the western United States. Proceedings of the National Academy of Sciences 118,
Quantifying contributions of natural variability and anthropogenic forcings on increased fire weather risk over the western United States.Crossref | GoogleScholarGoogle Scholar |