Table of Contents

Fire Ecology
Volume 14, Issue 1 - 2018
DOI: 10.4996/fireecology.1401

About the Cover

Research Articles

Characterizing a Poacher-Driven Fire Regime in Low-Nutrient Coastal Grasslands of Pondoland, South Africa

Authors: Christopher F. Brooke, Tineke Kraaij, and Jan A. Venter
Pages: 1-16
DOI: 10.4996/fireecology.14010106

Understanding fire regimes in the coastal region of the Pondoland center of plant endemism, (Eastern Cape, South Africa) is of critical importance, especially in areas where anthropogenic ignitions influence the fire regime. We characterized the fire regime (2007 to 2016) of Mkambati Nature Reserve (9200 ha) in terms of fire season, seasonality of fire-prone weather conditions, fire return interval (FRI), and influence of poaching-related ignitions. Fires were concentrated in winter when monthly fire danger weather index was highest.

View full abstract | View entire article (PDF)

Modeling Fire Pathways in Montane Grassland−Forest Ecotones

Authors: Joshua L. Conver, Donald A. Falk, Stephen R. Yool, and Robert R. Parmenter
Pages: 17-32
DOI: 10.4996/fireecology.140117031

Fire plays a key role in regulating the spatial interactions between adjacent vegetation types from the stand to the landscape scale. Fire behavior modeling can facilitate the understanding of these interactions and help managers restore or maintain fire’s natural role. The Valles Caldera National Preserve (VALL), in the Jemez Mountains of northern New Mexico, USA, contains one of the largest montane grasslands in North America and extensive areas of grassland−forest ecotone.

View full abstract | View entire article (PDF)

Dormant-Season Fire Inhibits Sixweeks Fescue and Enhances Forage Production in Shortgrass Steppe

Authors: Nickolas A. Dufek, David J. Augustine, Dana M. Blumenthal, Julie A. Kray, and Justin D. Derner
Pages: 33-49
DOI: 10.4996/fireecology.140132048

Semiarid rangelands experience substantial interannual variability in precipitation, which can determine the relative abundance of species in any given year and influence the way that fire affects plant community composition and productivity. Long-term studies are needed to examine potential interactions between fluctuating community composition and the role of fire in these ecosystems. Here, we report on an 11-year (2006 to 2016) study of annual and triennial dormant-season prescribed fires in the semiarid shortgrass steppe of Colorado, USA.

View full abstract | View entire article (PDF)

Seasonal Patterns and Drivers of Ashe Juniper Foliar Live Fuel Moisture and Relevance to Fire Planning

Authors: W. Matt McCaw, Devin M. Grobert, S. Bruce Brown, Sam Strickland, Guy A. Thompson, Glen Gillman, Lucien M. Ball, and Christopher D. Robinson
Pages: 50-64
DOI: 10.4996/fireecology.140150064

Foliar live fuel moisture (LFM)the weight of water in living plant foliage expressed as a percentage of dry weighttypically affects fire behavior in live wildland fuels. In juniper communities, juniper LFM is important for planning prescribed burns and wildfire response but can be time consuming to obtain regularly. Also, there has been little analysis of the ways in which juniper LFM varies seasonally or is affected by weather conditions, soil moisture, or other variables such as drought index.

View full abstract | View entire article (PDF)

Cryptogam Recolonization after Wildfire: Leaders and Laggards in Assemblages?

Authors: Allan J. Wills, Raymond J. Cranfield, Bruce G. Ward, and Verna L. Tunsell
Pages: 65-84
DOI: 10.4996/fireecology.140165084

Cryptogams (restricted here to mosses, liverworts, and lichens) have no particular fire-adapted survival strategies and rely on airborne spores or propagules to disperse to new habitats. Following fire, recolonization by cryptogams relies on the propagule sources in regional or local remnant unburned areas and for suitable conditions in the burned area. We used species occurrences on a fire-age (i.e., time since burn) mosaic in jarrah (Eucalyptus marginata Donn ex Sm.) forest near Walpole in southwestern Australia to predict recolonization of cryptogam species in an adjacent forest block.

View full abstract | View entire article (PDF)

Tree-Ring Indicators of Fire in Two Old-Growth Coast Redwood Forests

Authors: Allyson L. Carroll, Stephen C. Sillett, and Robert Van Pelt
Pages: 85-105
DOI: 10.4996/fireecology.140185105

Fires that burn through forests cause changes in wood anatomy and growth that can be used to reconstruct fire histories. Fire is important in Sequoia sempervirens (D. Don) Endl. (coast redwood) forests, but fire histories are limited due to difficulties crossdating annual rings of this species. Here we investigated three fires (1985, 1999, 2008) in two old-growth forests (Montgomery Woods State Natural Reserve and Landels-Hill Big Creek Reserve, California, USA) to quantify these responses via crossdated increment cores from lower trunks of 53 trees, including 10 that were climbed and cored at 10 m height intervals.

View full abstract | View entire article (PDF)

Fire and Climate Suitability for Woody Vegetation Communities in the South Central United States

Authors: Esther D. Stroh, Matthew A. Struckhoff, Michael C. Stambaugh, and Richard P. Guyette
Pages: 106-124
DOI: 10.4996/fireecology.140110612

Climate and fire are primary drivers of plant species distributions. Long-term management of south central United States woody vegetation communities can benefit from information on potentialchanges in climate and fire frequencies, and how these changes might affect plant communities. We used historical (1900 to 1929) and future (2040 to 2069 and 2070 to 2099) projected climate data for the conterminous US to estimate reference and future fire probabilities using a physical chemistry fire frequency model. We then used the fire probability data with additional climate parameters to construct maximum entropy environmental suitability models for three south central US vegetation communities.

View full abstract | View entire article (PDF)

Moisture Content, Ignitability, and Fire Risk of Vegetation in Vertical Greenery Systems

Authors: Kalani C. Dahanayake and Cheuk Lun Chow
Pages: 125-142
DOI: 10.4996/fireecology.140112514

Vertical greenery systems (VGS) are getting popular as a green cladding material. However, they have not been adequately assessed in terms of fire safety. Lack of maintenance and improper irrigation systems will cause drying of plants in VGS, creating substantial fire risk. Dry plants may be easily ignited and intensify the vertical spread of fire. However, potential fire hazards of VGS are barely discussed in the existing literature. The moisture content (MC) of a plant is one of the most critical factors affecting its ignitability. This study explores ignitability and fire risk of plants under radiative heat flux at different MCs.

View full abstract | View entire article (PDF)

Limits to Ponderosa Pine Regeneration Following Large High-Severity Forest Fires in the United States Southwest

Authors: Collin Haffey, Thomas D. Sisk, Craig D. Allen, Andrea E. Thode, and Ellis Q. Margolis
Pages: 143-163
DOI: 10.4996/fireecology.140114316

High-severity fires in dry conifer forests of the United States Southwest have created large (>1000 ha) treeless areas that are unprecedented in the regional historical record. These fires have reset extensive portions of Southwestern ponderosa pine (Pinus ponderosa Lawson & C. Lawson var. scopulorum Engelm.) forest landscapes. At least two recovery options following high-severity fire are emerging. One option is for post-fire successional pathways to move toward a return to the pre-fire forest type. Alternatively, an area may transition to persistent non-forested ecosystems.

View full abstract | View entire article (PDF)

Cambial Phenology Informs Tree-Ring Analysis of Fire Seasonality in Coastal Plain Pine Savannas

Authors: Monica T. Rother, Jean M. Huffman, Grant L. Harley, William J. Platt, Neil Jones, Kevin M. Robertson, and Steve L. Orzell
Pages: 164-185
DOI: 10.4996/fireecology.140116418

Understanding of historical fire seasonality should facilitate development of concepts regarding fire as an ecological and evolutionary process. In tree-ring based fire-history studies, the seasonality of fire scars can be classified based on the position of the fire scar within or between growth rings. Cambial phenology studies are needed to precisely relate a fire-scar position to months within a year because the timing of dormancy, earlywood production, and latewood production varies by species and location.

View full abstract | View entire article (PDF)