Results 261 to 270 of about 2,418,461 (282)

Fire return intervals and tree species succession in the North Shore region of eastern Quebec

Canadian Journal of Forest Research, 2008
We evaluated geographic variations in mean fire return intervals and postfire forest succession within a 66 497 km2 land area located in the eastern Quebec boreal forest. Fire return intervals were calculated using a time since last fire map for 1800–2000, and forest dynamics were studied by superimposing 3204 forest inventory plots onto the fire map.
Mathieu Bouchard, David Pothier, Sylvie Gauthier   +2 more
openaire   +1 more source

Modelling fire-return interval T: stochasticity and censoring in the two-parameter Weibull model

Ecological Modelling, 1999
Abstract Biologists are heavily reliant on the characterisation and description of disturbance phenomena and disturbance regimes. This dependency is well illustrated within research on fire recurrence and models of fire-frequency. It is well understood that the process of fire-return is subject to stochastic variation.
Daniel A. Polakow, Timothy T. Dunne
openaire   +1 more source

Simulations of the effects of changes in mean fire return intervals on balsam fir abundance, and implications for spruce budworm outbreaks

Ecological Modelling, 2008
Abstract In boreal forests of eastern Canada, the end of the little ice age (ca. 1850) coincided with a lengthening of mean fire return intervals, which has been hypothesized to increase the abundance of late-successional forests dominated by balsam fir.
David Pothier, Mathieu Bouchard
exaly   +2 more sources

Protea maturation rates and fire return intervals in a mediterranean ecosystem: testing the rules of thumb at a local scale

International Journal of Wildland Fire, 2021
The appropriate fire return interval of prescribed burns is critical in many fire-driven systems. I use a mediterranean-type ecosystem – Cape fynbos, South Africa – to test guidelines for fire return intervals. Guidelines state that at least 50% of a population of the slowest-maturing obligate seeder Protea species must have flowered for three ...
openaire   +1 more source

Resistance of Drakensberg grasslands to compositional change depends on the influence of fire-return interval and grassland structure on richness and spatial turnover

Perspectives in Plant Ecology, Evolution and Systematics, 2018
Abstract Frequent fire is necessary for maintaining sub-tropical and tropical grassland ecosystems, without which they may transform to forest. In the biodiversity-rich Drakensberg mountains of southern Africa, a challenge for conservation is to emulate the natural fire regime driven mainly by lightning ignition which existed before human influence ...
Terry Everson, Paul Gordijn
exaly   +2 more sources

Shortening fire return interval predisposes west-central Canadian boreal peatlands to more rapid vegetation growth and transition to forest cover

Global Change Biology
AbstractClimate change in northern latitudes is increasing the vulnerability of peatlands and the riparian transition zones between peatlands and upland forests (referred to as ecotones) to greater frequency of wildland fires. We examined early post‐fire vegetation regeneration following the 2011 Utikuma complex fire (central Alberta, Canada).
Laura E. Chasmer, Emily Jones
exaly   +3 more sources

Fire History of an Acidic Barrens Complex: A Methods Assessment of Fire Return Intervals

2020
Fire-scarred trees provide a valuable source of data and direct evidence for understanding past fires and vegetation dynamics. Although dendrochronological fire scar records provide fine-scale temporal and spatial resolution, limitations exist in the development, analysis, and interpretation of these fire history datasets.
openaire   +1 more source

Latitudinal gradient of fire return interval in conifer forests of western North America

Physical Geography, 2022
Jesús E. Sáenz-Ceja, Manuel E. Mendoza
openaire   +1 more source

A statistical modelling framework to quantify fire ignition probability and return interval at regional scale

European forest fires mostly occur in the Mediterranean area. Nevertheless, forest fire events are increasing also in northward regions as climate forcing increases long dry and warm periods. North of the Alps, regions that only saw occasional small wildfires are facing larger and more intense incidents.
Arthur Provost, Niklaus Zimmermann, Massimiliano Schwarz, Philipp Brun   +3 more
openaire   +1 more source

Effects of Varying Fire-Return Interval on Terrestrial Macro-Arthropods in a Mesquite-Encroached Shortgrass Prairie: Abundance, Diversity, and Biomass

Southwestern Entomologist, 2016
Abstract. Effects of frequency of prescribed burning on invertebrate abundance, diversity, and biomass were investigated in a shortgrass prairie encroached by mesquite, Prosopis glandulosa Torr., at Cross Bar Management Area in Potter County, TX. Invertebrates were collected from three burn treatments (frequencies of 2–3, 4–6, and 8–12 years) by using ...
Joy Lynn Newton, Richard T. Kazmaier, W. David Sissom   +2 more
openaire   +1 more source