Distinguishing disturbance from perturbations in fire-prone ecosystems
Jon E. Keeley A B D and Juli G. Pausas C
+ Author Affiliations
- Author Affiliations
A US Geological Survey, Western Ecological Research Center, Sequoia–Kings Canyon Field Station, Three Rivers, CA 93271, USA.
B Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA.
C Centro de Investigaciones sobre Desertificación, Consejo Superior de Investigaciones Cientíticas (CIDE-CSIC), Carretera CV-315, km 10.7, Montcada, Valencia, Spain.
D Corresponding author. Email: jon_keeley@usgs.gov
International Journal of Wildland Fire 28(4) 282-287 https://doi.org/10.1071/WF18203
Submitted: 23 November 2018 Accepted: 21 March 2019 Published: 18 April 2019
Abstract
Fire is a necessary ecosystem process in many biomes and is best viewed as a natural disturbance that is beneficial to ecosystem functioning. However, increasingly, we are seeing human interference in fire regimes that alters the historical range of variability for most fire parameters and results in vegetation shifts. Such perturbations can affect all fire regime parameters. Here, we provide a brief overview of examples where anthropogenically driven changes in fire frequency, fire pattern, fuels consumed and fire intensity constitute perturbations that greatly disrupt natural disturbance cycles and put ecosystems on a different trajectory resulting in type conversion. These changes are not due to fire per se but rather anthropogenic perturbations in the natural disturbance regime.
Additional keywords: human impacts, invasive species, patch dynamics, type conversion.
References
Allen CD, Savage M, Falk DA, Suckling KF, Swetnam TW, Schulke T, Stacey PB, Morgan P, Hoffman M, Klingel JT (2002) Ecological restoration of south-western ponderosa pine ecosystems: a broad perspective. Ecological Applications 12, 1418–1433.| Ecological restoration of south-western ponderosa pine ecosystems: a broad perspective.Crossref | GoogleScholarGoogle Scholar |
Bond WJ, van Wilgen BW (1996) ‘Fire and plants.’ (Chapman & Hall: New York, NY, USA)
D’Antonio CM, Vitousek PM (1992) Biological invasions by exotic grasses, the grass/fire cycle, and global change. Annual Review of Ecology and Systematics 23, 63–87.
| Biological invasions by exotic grasses, the grass/fire cycle, and global change.Crossref | GoogleScholarGoogle Scholar |
Enright NJ, Fontaine JB, Bowman DMJS, Bradstock RA, Williams RJ (2015) Interval squeeze: altered fire regimes and demographic responses interact to threaten woody species persistence as climate changes. Frontiers in Ecology and the Environment 13, 265–272.
| Interval squeeze: altered fire regimes and demographic responses interact to threaten woody species persistence as climate changes.Crossref | GoogleScholarGoogle Scholar |
Johns D, DellaSala DA (2017) Caring, killing, euphemism and George Orwell: how language choice undercuts our mission. Biological Conservation 211, 174–176.
| Caring, killing, euphemism and George Orwell: how language choice undercuts our mission.Crossref | GoogleScholarGoogle Scholar |
Johnstone JF, Chapin FS (2006) Effects of soil burn severity on post-fire tree recruitment in boreal forest. Ecosystems 9, 14–31.
Johnstone JF, Hollingsworth TN, Chapin FS, Mack MC (2010) Changes in fire regime break the legacy lock on successional trajectories in Alaskan boreal forest. Global Change Biology 16, 1281–1295.
Keeley JE (2009) Fire intensity, fire severity and burn severity: a brief review and suggested usage. International Journal of Wildland Fire 18, 116–126.
| Fire intensity, fire severity and burn severity: a brief review and suggested usage.Crossref | GoogleScholarGoogle Scholar |
Keeley JE, Stephenson NL (2000) Restoring natural fire regimes in the Sierra Nevada in an era of global change. In ‘Wilderness science in a time of change conference, Vol. 5’. (Eds DN Cole, SF McCool, J O’Loughlin). USDA Forest Service, Rocky Mountain Research Station, Proceedings RMRS-P-15, pp. 255–265. (Fort Collins, CO, USA)
Keeley JW, Aplet GH, Christensen NL, Conard SG, Johnson EA, Omi PN, Peterson DL, Swetnam TW (2009) Ecological foundations for fire management in North American forest and shrubland ecosystems. USDA Forest Service, Pacific Northwest Research Station, General Technical Report, PNW-GTR-779. (Corvallis, OR, USA)
Keeley JE, Bond RA, Bradstock RA, Pausas JG, Rundel PW (2012) ‘Fire in mediterranean climate ecosystems: ecology, evolution and management’. (Cambridge University Press: Cambridge, UK)
Kimball S, Principe Z, Deutschman D, Strahm S, Huxman TE, Lulow M, Balazs K (2018) Resistance and resilience: ten years of monitoring shrub and prairie communities in Orange County, CA, USA. Ecosphere 9, e02212
| Resistance and resilience: ten years of monitoring shrub and prairie communities in Orange County, CA, USA.Crossref | GoogleScholarGoogle Scholar |
Olsson AD, Betancourt J, McClaren MP, Marsh SE (2012) Sonoran Desert Ecosystem transformation by a C4 grass without the grass/fire cycle. Diversity and Distributions 18, 10–21.
Pausas JG, Keeley JE (2009) A burning story: the role of fire in the history of life. Bioscience 59, 593–601.
| A burning story: the role of fire in the history of life.Crossref | GoogleScholarGoogle Scholar |
Pausas JG, Keeley JE (2019) Wildfires as an ecosystem service. Frontiers in Ecology and the Environment , in press.
Pavlovic NB (1994) Disturbance-mediated persistence of rare plants: restoration implications. In ‘Recovery and restoration of endangered species’. (Eds ML Bowles, C Whelan) pp. 159–193. (Cambridge University Press: Cambridge, UK)
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. USDA Forest Service, Pacific Southwest Research Station, PSW Research Paper PSW-RP-266. (Albany, CA, USA)
Safford HD, Hayward G, Heller N, Wiens JA (2012) Climate change and historical ecology: can the past still inform the future? In ‘Historical environmental variation in conservation and natural resource management’. (Eds JA Wiens, G Hayward, HD Safford, CM Giffen) pp. 46–62. (John Wiley and Sons: New York, NY, USA)
Shive KL, Preisler HK, Welch KR, Safford HD, Butz RJ, O’Hara KL, Stephens SL (2018) From the stand scale to the landscape scale: predicting the spatial patterns of forest regeneration after disturbance. Ecological Applications 28, 1626–1639.
| From the stand scale to the landscape scale: predicting the spatial patterns of forest regeneration after disturbance.Crossref | GoogleScholarGoogle Scholar | 29809291PubMed |
Stephens SL, Lydersen JM, Collins BM, Fry DL, Meyer MD (2015) Historical and current landscape-scale ponderosa pine and mixed-conifer forest structure in the southern Sierra Nevada. Ecosphere 6, 79
| Historical and current landscape-scale ponderosa pine and mixed-conifer forest structure in the southern Sierra Nevada.Crossref | GoogleScholarGoogle Scholar |
Swetnam TW, Baisan CH (2003) Tree-ring reconstructions of fire and climate history in the Sierra Nevada and south-western United States. In ‘Fire and climatic change in temperate ecosystems of the western Americas’. (Eds TT Veblen, WL Baker, G Montenegro, TW Swetnam) pp. 158–195. (Springer: New York, NY, USA)
Turner MG, Harvey BJ, Hansen WD, Braziunas KH (2018) Changing fire regimes and resilience of lodgepole pine forests in Yellowstone. Abstract. In ‘Contributed Talks: 103rd Annual Meeting Ecological Society of America’, 5–10 August 2018, New Orleans, LA, USA. Available at https://esa.org/neworleans/newsroom/program-tips/fire/ [Verified 6 April 2019]
Walker RB, Coop JD, Parks SA, Trader L (2018) Fire regimes approaching historic norms reduce wildfire‐facilitated conversion from forest to non‐forest. Ecosphere 9, e02182
| Fire regimes approaching historic norms reduce wildfire‐facilitated conversion from forest to non‐forest.Crossref | GoogleScholarGoogle Scholar |
White PS, Pickett STA (1985) Natural disturbance and patch dynamics: an introduction. In ‘The ecology of natural disturbance and patch dynamics’. (Eds STA Pickett, PS White) pp. 3–13. (Academic Press: New York, NY, USA)