Search Results - "Knapp, Eric"

Prescribed fire in North American forests and woodlands: history, current practice, and challenges by Ryan, Kevin C, Knapp, Eric E, Varner, J Morgan

“…Whether ignited by lightning or by Native Americans, fire once shaped many North American ecosystems. Euro-American settlement and 20th-century fire…”
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Drought, Tree Mortality, and Wildfire in Forests Adapted to Frequent Fire by STEPHENS, SCOTT L., COLLINS, BRANDON M., FETTIG, CHRISTOPHER J., FINNEY, MARK A., HOFFMAN, CHAD M., KNAPP, ERIC E., NORTH, MALCOLM P., SAFFORD, HUGH, WAYMAN, REBECCA B.

“…Massive tree mortality has occurred rapidly in frequent-fire-adapted forests of the Sierra Nevada, California. This mortality is a product of acute drought…”
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Long-term dead wood changes in a Sierra Nevada mixed conifer forest: Habitat and fire hazard implications by Knapp, Eric E.

“…•Dead wood change was quantified by re-measuring mixed-conifer plots established in 1929.•Snags increased over nine-fold, but were of smaller size.•Coarse…”
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Land management explains major trends in forest structure and composition over the last millennium in California's Klamath Mountains by Knight, Clarke A, Anderson, Lysanna, Bunting, M Jane, Champagne, Marie, Clayburn, Rosie M, Crawford, Jeffrey N, Klimaszewski-Patterson, Anna, Knapp, Eric E, Lake, Frank K, Mensing, Scott A, Wahl, David, Wanket, James, Watts-Tobin, Alex, Potts, Matthew D, Battles, John J

“…SignificanceWe provide the first assessment of aboveground live tree biomass in a mixed conifer forest over the late Holocene. The biomass record, coupled with…”
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Quantifying spatial patterns of tree groups and gaps in mixed-conifer forests: Reference conditions and long-term changes following fire suppression and logging by Lydersen, Jamie M., North, Malcolm P., Knapp, Eric E., Collins, Brandon M.

“…•We assess changes in forest spatial structure following fire exclusion and logging.•The historical forest had greater structural heterogeneity.•The…”
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Long-term overstory and understory change following logging and fire exclusion in a Sierra Nevada mixed-conifer forest by Knapp, Eric E., Skinner, Carl N., North, Malcolm P., Estes, Becky L.

“…•Forest change was quantified by re-measuring plots established in 1929.•Tree density was 2.4times greater than in the historical old-growth…”
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Calibration and validation of the relative differenced Normalized Burn Ratio (RdNBR) to three measures of fire severity in the Sierra Nevada and Klamath Mountains, California, USA by Miller, Jay D., Knapp, Eric E., Key, Carl H., Skinner, Carl N., Isbell, Clint J., Creasy, R. Max, Sherlock, Joseph W.

“…Multispectral satellite data have become a common tool used in the mapping of wildland fire effects. Fire severity, defined as the degree to which a site has…”
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Climatic stress increases forest fire severity across the western United States by van Mantgem, Phillip J., Nesmith, Jonathan C. B., Keifer, MaryBeth, Knapp, Eric E., Flint, Alan, Flint, Lorriane

“…Pervasive warming can lead to chronic stress on forest trees, which may contribute to mortality resulting from fire‐caused injuries. Longitudinal analyses of…”
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Average Stand Age from Forest Inventory Plots Does Not Describe Historical Fire Regimes in Ponderosa Pine and Mixed-Conifer Forests of Western North America by Stevens, Jens T, Safford, Hugh D, North, Malcolm P, Fried, Jeremy S, Gray, Andrew N, Brown, Peter M, Dolanc, Christopher R, Dobrowski, Solomon Z, Falk, Donald A, Farris, Calvin A, Franklin, Jerry F, Fulé, Peter Z, Hagmann, R Keala, Knapp, Eric E, Miller, Jay D, Smith, Douglas F, Swetnam, Thomas W, Taylor, Alan H

“…Quantifying historical fire regimes provides important information for managing contemporary forests. Historical fire frequency and severity can be estimated…”
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Long-term effects of fire severity on oak-conifer dynamics in the southern Cascades by Cocking, Matthew I., Varner, J. Morgan, Knapp, Eric E.

“…We studied vegetation composition and structure in a mixed conifer-oak ecosystem across a range of fire severity 10 years following wildfire. Sample plots…”
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Factors influencing fire severity under moderate burning conditions in the Klamath Mountains, northern California, USA by Estes, Becky L., Knapp, Eric E., Skinner, Carl N., Miller, Jay D., Preisler, Haiganoush K.

“…Topography, weather, and fuels are known factors driving fire behavior, but the degree to which each contributes to the spatial pattern of fire severity under…”
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Persistent yet vulnerable: resurvey of an Abies ecotone reveals few differences but vulnerability to climate change by Nelson, Kellen N., O’Dean, Emily, Knapp, Eric E., Parker, Albert J., Bisbing, Sarah M.

“…Climate change is shifting forest tree species distributions across elevational and latitudinal gradients, and these changes are often pronounced at ecotones…”
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Growth and defense inform large sugar pine (Pinus lambertiana) mortality in a fire‐excluded forest of the central Sierra Nevada by Slack, Andrew W., Kane, Jeffrey M., Knapp, Eric E.

“…Key message Large sugar pine mortality was associated with recent growth and defense measures. Many old-growth pine forests across the western United States…”
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Housing arrangement and vegetation factors associated with single-family home survival in the 2018 Camp Fire, California by Knapp, Eric E., Valachovic, Yana S., Quarles, Stephen L., Johnson, Nels G.

“…Background The 2018 Camp Fire, which destroyed 18,804 structures in northern California, including most of the town of Paradise, provided an opportunity to…”
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Snag longevity and surface fuel accumulation following post-fire logging in a ponderosa pine dominated forest by Ritchie, Martin W., Knapp, Eric E., Skinner, Carl N.

“…► The 1000h and larger surface fuels increased with salvage basal area retention level. ► Highest levels of 1000h fuels were associated with unsalvaged areas…”
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Contrasting Impacts of Climate and Competition on Large Sugar Pine Growth and Defense in a Fire-Excluded Forest of the Central Sierra Nevada by Andrew Slack, Jeffrey Kane, Eric Knapp, Rosemary Sherriff

“…Many forest ecosystems with a large pine component in the western United States have experienced environmental stress associated with climate change and…”
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Forest thinning and prescribed burning treatments reduce wildfire severity and buffer the impacts of severe fire weather by Brodie, Emily G., Knapp, Eric E., Brooks, Wesley R., Drury, Stacy A., Ritchie, Martin W.

“…Background The capacity of forest fuel treatments to moderate the behavior and severity of subsequent wildfires depends on weather and fuel conditions at the…”
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Fire Treatment Effects on Vegetation Structure, Fuels, and Potential Fire Severity in Western U.S. Forests by Stephens, Scott L., Moghaddas, Jason J., Edminster, Carl, Fiedler, Carl E., Haase, Sally, Harrington, Michael, Keeley, Jon E., Knapp, Eric E., McIver, James D., Metlen, Kerry, Skinner, Carl N., Youngblood, Andrew

“…Forest structure and species composition in many western U.S. coniferous forests have been altered through fire exclusion, past and ongoing harvesting…”
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Response of understory vegetation to salvage logging following a high‐severity wildfire by Knapp, Eric E., Ritchie, Martin W.

“…Timber is frequently salvage‐logged following high‐severity stand‐replacing wildfire, but the practice is controversial. One concern is that compound…”
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Fire history in northern Sierra Nevada mixed conifer forests across a distinct gradient in productivity by Coppoletta, Michelle, Knapp, Eric E., Collins, Brandon M., Abbott, Celeste S., Fertel, Hannah M., Stephens, Scott L.

“…Background Understanding the role of fire in forested landscapes is fundamental to fire reintroduction efforts, yet few studies have examined how fire dynamics…”
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