Jon Keeley
Dr. Keeley is currently a research scientist with the U.S. Geological Survey, stationed at Sequoia National Park.
Prior to this appointment, he served one year in Washington, D.C. as director of the ecology program for the National Science Foundation. He was professor of biology at Occidental College for 20 years and spent a sabbatical year at the University of Cape Town, South Africa. He has more than 350 publications in national and international scientific journals and books. His research has focused on ecological impacts of wildfires as well as other aspects of plant ecology, including rare plants, rare habitats such as vernal pools, and plant physiology. In 1985 he was awarded a Guggenheim Fellowship and is a Fellow of the Ecological Society of America and an Honorary Lifetime Member of the California Botanical Society. He has served on the Los Angeles County Department of Regional Planning Environmental Review Board, and the State of California Natural Communities Conservation Program (NCCP) Board of Scientific Advisors.
Professional Experience
U.S. Geological Survey, Western Ecological Research Center, Research Scientist
(ST Scientist), 2015–present
(GS series 0408), 1998–present
University of California, Los Angeles, Adjunct Full Professor, 2001-present
Rancho Santa Ana Botanic Garden, Research Associate, 1997–present
National Science Foundation, Program Director 1997–1998
Occidental College,
Professor 1988–1998
Department Chair 1982–1988
Assist/Assoc Professor 1977–1988
University of Cape Town, Visiting Professor 1990
Education and Certifications
Ph.D. (Botany) University of Georgia, Athens, 1977
M.S. (Biology) San Diego State University, 1973
B.S. (Biology) San Diego State University, 1971
Honors and Awards
Fellow, Ecological Society of America, 2014
Distinguished MEDECOS Fellow, 2011
USGS Performance Award, 2011
USGS Star Award, 2008
Honorary Lifetime Member, California Botanical Society, 1998
Fellow, Southern California Academy of Sciences, l994
Guggenheim Fellow, l985–l986
Sterling Award for Outstanding Teaching, l985
Science and Products
Characters in Arctostaphylos taxonomy
Why were California's wine country fires so destructive?
Epicormic resprouting in fire-prone ecosystems
Trends and drivers of fire activity vary across California aridland ecosystems
Different historical fire–climate patterns in California
Flammability as an ecological and evolutionary driver
The importance of building construction materials relative to other factors affecting structure survival during wildfire
Impacts of mastication fuel treatments on California, USA, chaparral vegetation structure and composition
Human presence diminishes the importance of climate in driving fire activity across the United States
Historical reconstructions of California wildfires vary by data source
Can private land conservation reduce wildfire risk to homes? A case study in San Diego County, California, USA
Mediterranean biomes: Evolution of their vegetation, floras and climate
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Characters in Arctostaphylos taxonomy
There is value in understanding the past and how it has affected the present. Science focuses on empirical findings, and we know that our prior experiences and those of our predecessors play important roles in determining how we interpret the present. We learn from accomplishments and foibles of predecessors and appreciate the real life experiences we have gone through. In our studies of the genusAuthorsJon E. Keeley, V. Thomas Parker, Michael C. VaseyWhy were California's wine country fires so destructive?
As of late October more than a dozen wildfires north of San Francisco had killed more than 40 people, burned approximately 160,000 acres and destroyed more than 7,000 structures.This tragic loss of life and property is unprecedented in California. However, the fires are not anomalous events in terms of their size, intensity or the speed with which they spread. Indeed, the path of the destructive TAuthorsJon E. KeeleyEpicormic resprouting in fire-prone ecosystems
Many plants resprout from basal buds after disturbance, and this is common in shrublands subjected to high-intensity fires. However, resprouting after fire from epicormic (stem) buds is globally far less common. Unlike basal resprouting, post-fire epicormic resprouting is a key plant adaptation for retention of the arborescent skeleton after fire, allowing rapid recovery of the forest or woodlandAuthorsJuli G. Pausas, Jon E. KeeleyTrends and drivers of fire activity vary across California aridland ecosystems
Fire activity has increased in western US aridland ecosystems due to increased human-caused ignitions and the expansion of flammable exotic grasses. Because many desert plants are not adapted to fire, increased fire activity may have long-lasting ecological impacts on native vegetation and the wildlife that depend on it. Given the heterogeneity across aridland ecosystems, it is important to undersAuthorsAlexandra D. Syphard, Jon E. Keeley, John T. AbatzoglouDifferent historical fire–climate patterns in California
The relationship between annual variation in area burned and seasonal temperatures and precipitation was investigated for the major climate divisions in California. Historical analyses showed marked differences in fires on montane and foothill landscapes. Based on roughly a century of data, there are five important lessons on fire–climate relationships in California: (1) seasonal variations in temAuthorsJon E. Keeley, Alexandra D. SyphardFlammability as an ecological and evolutionary driver
We live on a flammable planet yet there is little consensus on the origin and evolution of flammability in our flora.We argue that part of the problem lies in the concept of flammability, which should not be viewed as a single quantitative trait or metric. Rather, we propose that flammability has three major dimensions that are not necessarily correlated: ignitability, heat release and fire spreadAuthorsJuli G. Pausas, Jon E. Keeley, Dylan W. SchwilkThe importance of building construction materials relative to other factors affecting structure survival during wildfire
Structure loss to wildfire is a serious problem in wildland-urban interface areas across the world. Laboratory experiments suggest that fire-resistant building construction and design could be important for reducing structure destruction, but these need to be evaluated under real wildfire conditions, especially relative to other factors. Using empirical data from destroyed and surviving structuresAuthorsAlexandra D. Syphard, Teresa J. Brennan, Jon E. KeeleyImpacts of mastication fuel treatments on California, USA, chaparral vegetation structure and composition
Mechanical fuel treatments are a primary pre-fire strategy for potentially mitigating the threat of wildland fire, yet there is limited information on how they impact shrubland ecosystems. Our goal was to assess the impact of mechanical mastication fuel treatments on chaparral vegetation and to determine the extent to which they emulate early post-fire succession. Mastication treatments significanAuthorsTeresa J. Brennan, Jon E. KeeleyHuman presence diminishes the importance of climate in driving fire activity across the United States
Growing human and ecological costs due to increasing wildfire are an urgent concern in policy and management, particularly given projections of worsening fire conditions under climate change. Thus, understanding the relationship between climatic variation and fire activity is a critically important scientific question. Different factors limit fire behavior in different places and times, but most fAuthorsAlexandra D. Syphard, Jon E. Keeley, Anne Hopkins Pfaff, Ken FerschweilerHistorical reconstructions of California wildfires vary by data source
Historical data are essential for understanding how fire activity responds to different drivers. It is important that the source of data is commensurate with the spatial and temporal scale of the question addressed, but fire history databases are derived from different sources with different restrictions. In California, a frequently used fire history dataset is the State of California Fire and ResAuthorsAlexandra D. Syphard, Jon E. KeeleyCan private land conservation reduce wildfire risk to homes? A case study in San Diego County, California, USA
The purchase of private land for conservation purposes is a common way to prevent the exploitation of sensitive ecological areas. However, private land conservation can also provide other benefits, one of these being natural hazard reduction. Here, we investigated the impacts of private land conservation on fire risk to homes in San Diego County, California. We coupled an econometric land use chanAuthorsVan Butsic, Alexandra D. Syphard, Jon E. Keeley, Avi Bar-MassadaMediterranean biomes: Evolution of their vegetation, floras and climate
Mediterranean-type ecosystems (MTEs) possess the highest levels of plant species richness in the world outside of the wet tropics. Sclerophyll vegetation similar to today’s mediterranean-type shrublands was already present on oligotrophic soils in the wet and humid climate of the Cretaceous, with fire-adapted Paleogene lineages in southwestern Australia and the Cape Region. The novel MTC seasonaliAuthorsPhilip W. Rundel, Mary T.K. Arroyo, R.M. Cowling, J. E. Keeley, B.B. Lamont, Pablo Vargas - Software
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