James A. Lutz

Contact Info

Wildland Resources Department
Utah State University
5230 Old Main Hill
Logan, Utah 84322-5230, USA

Publications in Fire Ecology

Fire Regime Attributes of Wildland Fires in Yosemite National Park, USA
Pages: 34-52
DOI: 10.4996/fireecology.0302034

Past attempts to suppress all fires in some western forests have altered historic fire regimes. Accumulated debris and dense understories of shade tolerant species coupled with a warmer climate have led to catastrophic wildfires. Prescribed fires and wildland fire use fires are used by land managers to reduce fuels and restore natural conditions. Little is known about how wildfires, prescribed fires, and wildland fire use fires differ in their fire regime attributes.  [Read More]

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Modeling the Effects of Fire Severity and Spatial Complexity on Small Mammals in Yosemite National Park, California
Pages: 83-104
DOI: 10.4996/fireecology.0402083

We evaluated the impact of fire severity and related spatial and vegetative parameters on small mammal populations in 2 yr- to 15 yr-old burns in Yosemite National Park, California, USA. We also developed habitat models that would predict small mammal responses to fires of differing severity. We hypothesized that fire severity would influence the abundances of small mammals through changes in vegetation composition, structure, and spatial habitat complexity.  [Read More]

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Fire Frequency, Area Burned, and Severity: A Quantitative Approach to Defining a Normal Fire Year
Pages: 51-65
DOI: 10.4996/fireecology.0702051

Fire frequency, area burned, and fire severity are important attributes of a fire regime, but few studies have quantified the interrelationships among them in evaluating a fire year. Although area burned is often used to summarize a fire season, burned area may not be well correlated with either the number or ecological effect of fires. Using the Landsat data archive, we examined all 148 wildland fires (prescribed fires and wildfires) >40 ha from 1984 through 2009 for the portion of the Sierra Nevada centered on Yosemite National Park, California, USA.   [Read More]

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Biomass and Burning Characteristics of Sugar Pine Cones
Pages: 58-70
DOI: 10.4996/fireecology.0803058

We investigated the physical and burning characteristics of sugar pine (Pinus lambertiana Douglas) cones and their contribution to woody surface fuel loadings.  [Read More]

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Shrub Communities, Spatial Patterns, and Shrub-Mediated Tree Mortality following Reintroduced Fire in Yosemite National Park, California, USA
Pages: 104-126
DOI: 10.4996/fireecology.1301104

Shrubs contribute to the forest fuel load; their distribution is important to tree mortality and regeneration, and vertebrate occupancy. We used a method new to fire ecologyextensive continuous mapping of trees and shrub patches within a single large (25.6 ha) study siteto identify changes in shrub area, biomass, and spatial pattern due to fire reintroduction by a backfire following a century of fire exclusion in lower montane forests of the Sierra Nevada, California, USA.  [Read More]

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