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Selection: Keeley:JE [6 articles] 

Publications by author Keeley:JE.
 

Human influence on California fire regimes

  
Ecological Applications, Vol. 17, No. 5. (July 2007), pp. 1388-1402, https://doi.org/10.1890/06-1128.1

Abstract

Periodic wildfire maintains the integrity and species composition of many ecosystems, including the mediterranean-climate shrublands of California. However, human activities alter natural fire regimes, which can lead to cascading ecological effects. Increased human ignitions at the wildland–urban interface (WUI) have recently gained attention, but fire activity and risk are typically estimated using only biophysical variables. Our goal was to determine how humans influence fire in California and to examine whether this influence was linear, by relating contemporary (2000) and historic (1960–2000) ...

 

Fire as an evolutionary pressure shaping plant traits

  
Trends in Plant Science, Vol. 16, No. 8. (August 2011), pp. 406-411, https://doi.org/10.1016/j.tplants.2011.04.002

Abstract

Traits, such as resprouting, serotiny and germination by heat and smoke, are adaptive in fire-prone environments. However, plants are not adapted to fire per se but to fire regimes. Species can be threatened when humans alter the regime, often by increasing or decreasing fire frequency. Fire-adaptive traits are potentially the result of different evolutionary pathways. Distinguishing between traits that are adaptations originating in response to fire or exaptations originating in response to other factors might not always be possible. However, fire ...

 

Effects of invasive alien plants on fire regimes

  
BioScience, Vol. 54, No. 7. (2004), pp. 677-688, https://doi.org/10.1641/0006-3568(2004)054[0677:eoiapo]2.0.co;2

Abstract

Plant invasions are widely recognized as significant threats to biodiversity conservation worldwide. One way invasions can affect native ecosystems is by changing fuel properties, which can in turn affect fire behavior and, ultimately, alter fire regime characteristics such as frequency, intensity, extent, type, and seasonality of fire. If the regime changes subsequently promote the dominance of the invaders, then an invasive plant–fire regime cycle can be established. As more ecosystem components and interactions are altered, restoration of preinvasion conditions becomes more ...

 

The human dimension of fire regimes on Earth

  
Journal of Biogeography, Vol. 38, No. 12. (2011), pp. 2223-2236, https://doi.org/10.1111/j.1365-2699.2011.02595.x

Abstract

Humans and their ancestors are unique in being a fire-making species, but ‘natural’ (i.e. independent of humans) fires have an ancient, geological history on Earth. Natural fires have influenced biological evolution and global biogeochemical cycles, making fire integral to the functioning of some biomes. Globally, debate rages about the impact on ecosystems of prehistoric human-set fires, with views ranging from catastrophic to negligible. Understanding of the diversity of human fire regimes on Earth in the past, present and future remains rudimentary. ...

 

Evolution of life histories in Pinus

  
In Ecology and biogeography of Pinus (1998), pp. 219-250

Abstract

Pinus is a remarkable genus of trees with a very large distribution range in the northern hemisphere. Where they occur, pines usually form the dominant vegetation cover and are extremely important components of ecosystems. They also provide a wide range of products for human use. In many cases exploitation and other human pressures are threatening the survival of natural pine forests, although pines are also widely grown in commercial plantations, both within and outside their natural range. This book presents a ...

 

North American terrestrial vegetation (second edition)

  
(2000)

Abstract

[Excerpt from Introduction] Chapters focus on the major plant formations of North America, but they also include information on many other, more local, vegetation types. The authors have devoted enough attention to each vegetation type discussed to give the reader details on vegetation structure, response to disturbance, community/environment relations, nutrient cycling and productivity, and autecological behavior of dominant species. ...

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Integrated Natural Resources Modelling and Management - Meta-information Database. http://mfkp.org/INRMM/author/Keeley:JE

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