Search Results - "Zald, Harold"

Large-area mapping of Canadian boreal forest cover, height, biomass and other structural attributes using Landsat composites and lidar plots by Matasci, Giona, Hermosilla, Txomin, Wulder, Michael A., White, Joanne C., Coops, Nicholas C., Hobart, Geordie W., Zald, Harold S.J.

“…Passive optical remotely sensed images such as those from the Landsat satellites enable the development of spatially comprehensive, well-calibrated reflectance…”
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Severe fire weather and intensive forest management increase fire severity in a multi-ownership landscape by Zald, Harold S. J., Dunn, Christopher J.

“…Many studies have examined how fuels, topography, climate, and fire weather influence fire severity. Less is known about how different forest management…”
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Integrating Landsat pixel composites and change metrics with lidar plots to predictively map forest structure and aboveground biomass in Saskatchewan, Canada by Zald, Harold S.J., Wulder, Michael A., White, Joanne C., Hilker, Thomas, Hermosilla, Txomin, Hobart, Geordie W., Coops, Nicholas C.

“…Forest inventory and monitoring programs are needed to provide timely, spatially complete (i.e. mapped), and verifiable information to support forest…”
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Climate‐Driven Tree Mortality and Fuel Aridity Increase Wildfire's Potential Heat Flux by Goodwin, Marissa J., Zald, Harold S. J., North, Malcolm P., Hurteau, Matthew D.

“…Wildfire is capable of rapidly releasing the energy stored in forests, with the amount of water in live and dead biomass acting as a regulator on the amount…”
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Tree resistance to drought and bark beetle-associated mortality following thinning and prescribed fire treatments by Bernal, Alexis A., Kane, Jeffrey M., Knapp, Eric E., Zald, Harold S.J.

“…•Treatments help multiple species resist drought and bark beetle outbreak.•Thinning and prescribed fire promote tree resistance to multiple…”
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Do insect outbreaks reduce the severity of subsequent forest fires? by Meigs, Garrett W, Zald, Harold S J, Campbell, John L, Keeton, William S, Kennedy, Robert E

“…Understanding the causes and consequences of rapid environmental change is an essential scientific frontier, particularly given the threat of climate- and land…”
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Tree growth responses to extreme drought after mechanical thinning and prescribed fire in a Sierra Nevada mixed-conifer forest, USA by Zald, Harold S.J., Callahan, Chance C., Hurteau, Matthew D., Goodwin, Marissa J., North, Malcolm P.

“…•Drought-induced tree mortality highlights need for climate mitigation treatments.•Thinning resulted in durable increases in tree growth, even during extreme…”
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Changing climate reallocates the carbon debt of frequent‐fire forests by Goodwin, Marissa J., North, Malcolm P., Zald, Harold S. J., Hurteau, Matthew D.

“…Ongoing climate change will alter the carbon carrying capacity of forests as they adjust to climatic extremes and changing disturbance regimes. In…”
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Influence of lidar, Landsat imagery, disturbance history, plot location accuracy, and plot size on accuracy of imputation maps of forest composition and structure by Zald, Harold S.J., Ohmann, Janet L., Roberts, Heather M., Gregory, Matthew J., Henderson, Emilie B., McGaughey, Robert J., Braaten, Justin

“…This study investigated how lidar-derived vegetation indices, disturbance history from Landsat time series (LTS) imagery, plot location accuracy, and plot size…”
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Thinning and prescribed burning increase shade-tolerant conifer regeneration in a fire excluded mixed-conifer forest by Zald, Harold S.J., May, Carolina J., Gray, Andrew N., North, Malcolm P., Hurteau, Matthew D.

“…•Prescribed burning and understory thinning increased shade-tolerant regeneration.•No treatments individually or in combination increased natural pine…”
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The 15-year post-treatment response of a mixed-conifer understory plant community to thinning and burning treatments by Goodwin, Marissa J., North, Malcolm P., Zald, Harold S.J., Hurteau, Matthew D.

“…•Fire suppression has altered forests, impacting the understory plant community.•Thinning and burning cause a near-term increase in plant cover and…”
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Range-wide population assessments for subalpine fir indicate widespread disturbance-driven decline by Perret, Daniel L., Bell, David M., Gray, Andrew N., Shaw, John D., Zald, Harold S.J.

“…•We used 5,614 FIA plots to assess subalpine fir population trends in the western US.•Abundance and basal area declined together across 62% of the species’…”
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Repeated burns fail to restore pine regeneration to the natural range of variability in a Sierra Nevada mixed‐conifer forest, U.S.A by May, Carolina J., Zald, Harold S. J., North, Malcom P., Gray, Andrew N., Hurteau, Matthew D.

“…Fire‐exclusion has acted as a major perturbation on dry conifer forests in the western United States, increasing tree density and, in mixed‐conifer forests,…”
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Lidar Prediction of Small Mammal Diversity in Wisconsin, USA by Schooler, Sarah L., Zald, Harold S. J.

“…Vegetation structure is a crucial component of habitat selection for many taxa, and airborne LiDAR (Light Detection and Ranging) technology is increasingly…”
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Conifer water-use patterns across temporal and topographic gradients in the southern Sierra Nevada by Goodwin, Marissa J, Kerhoulas, Lucy P, Zald, Harold S J, North, Malcolm P, Hurteau, Matthew D

“…Climate change is increasing the severity and duration of drought events experienced by forest ecosystems. Because water is essential for tree physiological…”
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Comparison of Low-Cost Commercial Unpiloted Digital Aerial Photogrammetry to Airborne Laser Scanning across Multiple Forest Types in California, USA by Lamping, James E., Zald, Harold S. J., Madurapperuma, Buddhika D., Graham, Jim

“…Science-based forest management requires quantitative estimation of forest attributes traditionally collected via sampled field plots in a forest inventory…”
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Dynamics of stump sprout regeneration after transformation to multiaged management in coast redwood forests by Muma, Robert, Webb, Lynn A., Zald, Harold S.J., Boston, Kevin, Dagley, Christa M., Berrill, John-Pascal

“…[Display omitted] •Residual stand influenced stump sprout regeneration dynamics in multiaged redwood.•Partial cutting initiated new cohort dominated by redwood…”
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Recent climate warming forces contrasting growth responses of white spruce at treeline in Alaska through temperature thresholds by Wilmking, M, Juday, G.P, Barber, V.A, Zald, H.S.J

“…Northern and high-latitude alpine treelines are generally thought to be limited by available warmth. Most studies of tree-growth–climate interaction at…”
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Complex mountain terrain and disturbance history drive variation in forest aboveground live carbon density in the western Oregon Cascades, USA by Zald, Harold S.J., Spies, Thomas A., Seidl, Rupert, Pabst, Robert J., Olsen, Keith A., Steel, E. Ashley

“…•We mapped aboveground live carbon (ALC) density using lidar and field plots.•Past logging had a greater influence on landscape ALC than past…”
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Managing fire‐prone forests in a time of decreasing carbon carrying capacity by Hurteau, Matthew D, Goodwin, Marissa J, Marsh, Christopher, Zald, Harold SJ, Collins, Brandon, Meyer, Marc, North, Malcolm P

“…Changing climatic conditions are increasing overstory tree mortality in forests globally. This restructuring of the distribution of biomass is making already…”
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