Comparative hazard assessment for protected species in a fire-prone landscape

Roloff, Gary J.; Mealey, Stephen P.; Bailey, John D.

doi:10.1016/j.foreco.2012.04.015

Cited by 19 publications

(20 citation statements)

References 46 publications

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“…One early method was to network discontinuous but spatially layered fuel treatments termed ''strategically placed landscape area treatments" or SPLATs (Finney, 2001;Finney et al, 2007;Bahro et al, 2007;Schmidt et al, 2008) -an approach Loehle (2004) likened to the arrangement of bulkheads on a ship. Later modeling employed defensible fuel profile zones (DFPZ's, Moghaddas et al, 2010), prioritizing treated areas according to stocking density (Ager et al, 2010;Collins et al, 2011b), and protecting special value areas, such as threatened habitats for high priority species (Ager et al, , 2012Gaines et al, 2010aGaines et al, , 2010bKennedy et al, 2008;Lehmkuhl et al, 2007;Scheller et al, 2011;Syphard et al, 2011;Roloff et al, 2012), or urban/exurban development concentrations (Ager et al, 2010). Various studies have compared approaches (e.g.…”

Section: Lessons From Fuel Treatment Simulation Studiesmentioning

confidence: 99%

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Tamm Review: Management of mixed-severity fire regime forests in Oregon, Washington, and Northern California

Hessburg

Spies

Perry

et al. 2016

Forest Ecology and Management

177

190

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a b s t r a c tIncreasingly, objectives for forests with moderate-or mixed-severity fire regimes are to restore successionally diverse landscapes that are resistant and resilient to current and future stressors. Maintaining native species and characteristic processes requires this successional diversity, but methods to achieve it are poorly explained in the literature. In the Inland Pacific US, large, old, early seral trees were a key historical feature of many young and old forest successional patches, especially where fires frequently occurred. Large, old trees are naturally fire-tolerant, but today are often threatened by dense understory cohorts that create fuel ladders that alter likely post-fire successional pathways. Reducing these understories can contribute to resistance by creating conditions where canopy trees will survive disturbances and climatic stressors; these survivors are important seed sources, soil protectors, and critical habitat elements. Historical timber harvesting has skewed tree size and age class distributions, created hard edges, and altered native patch sizes. Manipulating these altered forests to promote development of larger patches of older, larger, and more widely-spaced trees with diverse understories will increase landscape resistance to severe fires, and enhance wildlife habitat for underrepresented conditions.Closed-canopy, multi-layered patches that develop in hot, dry summer environments are vulnerable to droughts, and they increase landscape vulnerability to insect outbreaks and severe wildfires. These same patches provide habitat for species such as the northern spotted owl, which has benefited from increased habitat area. Regional and local planning will be critical for gauging risks, evaluating trade-offs, and restoring dynamics that can support these and other species. The goal will be to manage for heterogeneous landscapes that include variably-sized patches of (1) young, middle-aged, and old, closedcanopy forests growing in upper montane, northerly aspect, and valley bottom settings, (2) a similar diversity of open-canopy, fire-tolerant patches growing on ridgetops, southerly aspects, and lower montane settings, and (3) significant montane chaparral and grassland areas. Tools to achieve this goal http://dx

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Section: Lessons From Fuel Treatment Simulation Studiesmentioning

confidence: 99%

“…5 In a second paper, Roloff et al (2012) analyzed a different fuel management strategy for the same area. In that work they found that active management ''was more favorable to spotted owl conservation.…”

Section: Carefully Considering Trade-offsmentioning

confidence: 99%

Tamm Review: Management of mixed-severity fire regime forests in Oregon, Washington, and Northern California

Hessburg

Spies

Perry

et al. 2016

Forest Ecology and Management

177

190

View full text Add to dashboard Cite

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“…Roloff et al (2005) modeled active management and no management in fire-prone landscapes in southwestern Oregon and found that active management in owl foraging areas reduced owl habitat compared with no management (only losses to wildfire). However, in a second analysis, Roloff et al (2012) found that active management "was more favorable to spotted owl conservation...than no management." They used FlamMap to estimate crown fire potential and assumed that if 50% of the owl territory had crown fire potential, then all of the territory would be lost to a fire.…”

Section: Discussionmentioning

confidence: 98%

Using an agent-based model to examine forest management outcomes in a fire-prone landscape in Oregon, USA

Spies¹,

White²,

Ager³

et al. 2017

E&S

Self Cite

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. 2017. Using an agent-based model to examine forest management outcomes in a fire-prone landscape in Oregon, USA. Ecology and Society 22 (1) ABSTRACT. Fire-prone landscapes present many challenges for both managers and policy makers in developing adaptive behaviors and institutions. We used a coupled human and natural systems framework and an agent-based landscape model to examine how alternative management scenarios affect fire and ecosystem services metrics in a fire-prone multiownership landscape in the eastern Cascades of Oregon. Our model incorporated existing models of vegetation succession and fire spread and information from original empirical studies of landowner decision making. Our findings indicate that alternative management strategies can have variable effects on landscape outcomes over 50 years for fire, socioeconomic, and ecosystem services metrics. For example, scenarios with federal restoration treatments had slightly less high-severity fire than a scenario without treatment; exposure of homes in the wildland-urban interface to fire was also slightly less with restoration treatments compared to no management. Treatments appeared to be more effective at reducing high-severity fire in years with more fire than in years with less fire. Under the current management scenario, timber production could be maintained for at least 50 years on federal lands. Under an accelerated restoration scenario, timber production fell because of a shortage of areas meeting current stand structure treatment targets. Trade-offs between restoration outcomes (e.g., open forests with large fire-resistant trees) and habitat for species that require dense older forests were evident. For example, the proportional area of nesting habitat for northern spotted owl (Strix occidentalis) was somewhat less after 50 years under the restoration scenarios than under no management. However, the amount of resilient older forest structure and habitat for white-headed woodpecker (Leuconotopicus albolarvatus) was higher after 50 years under active management. More carbon was stored on this landscape without management than with management, despite the occurrence of high-severity wildfire. Our results and further applications of the model could be used in collaborative settings to facilitate discussion and development of policies and practices for fire-prone landscapes.

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“…; Roloff et al. ). The biodiversity loss index computed here combined both direct potential loss through the diversity index and long‐term potential loss through the vulnerability index.…”

Section: Discussionmentioning

confidence: 97%

“…; Roloff et al. ). On the other hand, an original fire risk scheme has been proposed by Chuvieco et al.…”

Section: Discussionmentioning

confidence: 97%

Wildfire risk for main vegetation units in a biodiversity hotspot: modeling approach in New Caledonia, South Pacific

Mangeas

Curt

Ibanez

et al. 2014

Ecology and Evolution

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Wildfire has been recognized as one of the most ubiquitous disturbance agents to impact on natural environments. In this study, our main objective was to propose a modeling approach to investigate the potential impact of wildfire on biodiversity. The method is illustrated with an application example in New Caledonia where conservation and sustainable biodiversity management represent an important challenge. Firstly, a biodiversity loss index, including the diversity and the vulnerability indexes, was calculated for every vegetation unit in New Caledonia and mapped according to its distribution over the New Caledonian mainland. Then, based on spatially explicit fire behavior simulations (using the FLAMMAP software) and fire ignition probabilities, two original fire risk assessment approaches were proposed: a one-off event model and a multi-event burn probability model. The spatial distribution of fire risk across New Caledonia was similar for both indices with very small localized spots having high risk. The patterns relating to highest risk are all located around the remaining sclerophyll forest fragments and are representing 0.012% of the mainland surface. A small part of maquis and areas adjacent to dense humid forest on ultramafic substrates should also be monitored. Vegetation interfaces between secondary and primary units displayed high risk and should represent priority zones for fire effects mitigation. Low fire ignition probability in anthropogenic-free areas decreases drastically the risk. A one-off event associated risk allowed localizing of the most likely ignition areas with potential for extensive damage. Emergency actions could aim limiting specific fire spread known to have high impact or consist of on targeting high risk areas to limit one-off fire ignitions. Spatially explicit information on burning probability is necessary for setting strategic fire and fuel management planning. Both risk indices provide clues to preserve New Caledonia hot spot of biodiversity facing wildfires.

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Comparative hazard assessment for protected species in a fire-prone landscape

Cited by 19 publications

References 46 publications

Tamm Review: Management of mixed-severity fire regime forests in Oregon, Washington, and Northern California

Tamm Review: Management of mixed-severity fire regime forests in Oregon, Washington, and Northern California

Using an agent-based model to examine forest management outcomes in a fire-prone landscape in Oregon, USA

Wildfire risk for main vegetation units in a biodiversity hotspot: modeling approach in New Caledonia, South Pacific

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