Index Catalog // ScholarsArchive@OSU

Decadal Trends in Net Ecosystem Production and Net Ecosystem Carbon Balance for a Regional Socioecological System

Creator:: Turner, David P., Ritts, William D., Yang, Zhiqiang, Kennedy, Robert E., Cohen, Warren B., Duane, Maureen V., Thornton, Peter E., and Law, Beverly E.
Abstract:: Carbon sequestration is increasingly recognized as an ecosystem service, and forest management has a large potential to alter regional carbon fluxes − notably by way of harvest removals and related impacts on net ecosystem production (NEP). In the Pacific Northwest region of the U.S., the implementation of the Northwest Forest...
Resource Type:: Article
Full Text:: Society, Oregon State University Cohen, Warren B. U.S.D.A. Forest Service, Pacific Northwest Station

A Landsat time series approach to characterize bark beetle and defoliator impacts on tree mortality and surface fuels in conifer forests

Creator:: Meigs, Garrett W., Kennedy, Robert E., and Cohen, Warren B.
Abstract:: Insects are important forest disturbance agents, and mapping their effects on tree mortality and surface fuels represents a critical research challenge. Although various remote sensing approaches have been developed to monitor insect impacts, most studies have focused on single insect agents or single locations and have not related observed changes...
Resource Type:: Article
Full Text:: University, 321 Richardson Hall, Corvallis, OR, 97331, USA b Pacific Northwest Research Station, USDA Forest

Spatiotemporal dynamics of recent mountain pine beetle and western spruce budworm outbreaks across the Pacific Northwest Region, USA

Creator:: Meigs, Garrett W., Kennedy, Robert E., Gray, Andrew N., and Gregory, Matthew J.
Abstract:: Across the western US, the two most prevalent native forest insect pests are mountain pine beetle (MPB; Dendroctonus ponderosae; a bark beetle) and western spruce budworm (WSB; Choristoneura freemani; a defoliator). MPB outbreaks have received more forest management attention than WSB outbreaks, but studies to date have not compared their...
Resource Type:: Article
Full Text:: Northwest Research Station, USDA Forest Service, 3200 SW Jefferson Way, Corvallis, OR 97331, USA a r t i c

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect-caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand-scale simulations or individual events. This study investigates landscape- and regional-scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect‐caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand‐scale simulations or individual events. This study investigates landscape‐ and regional‐scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Creator:: Meigs, Garrett W., Campbell, John L., Zald, Harold S. J., Bailey, John D., Shaw, David C., and Kennedy, Robert E.
Abstract:: Although there is acute concern that insect‐caused tree mortality increases the likelihood or severity of subsequent wildfire, previous studies have been mixed, with findings typically based on stand‐scale simulations or individual events. This study investigates landscape‐ and regional‐scale wildfire likelihood following outbreaks of the two most prevalent native insect pests...
Resource Type:: Article

Improving estimates of forest disturbance by combining observations from Landsat time series with U.S. Forest Service Forest Inventory and Analysis data

Creator:: Schroeder, Todd A., Healey, Sean P., Moisen, Gretchen G., Frescino, Tracey S., Cohen, Warren B., Huang, Chengquan, Kennedy, Robert E., and Yang, Zhiqiang
Abstract:: With earth's surface temperature and human population both on the rise a new emphasis has been placed on monitoring changes to forested ecosystems the world over. In the United States the U.S. Forest Service Forest Inventory and Analysis (FIA) program monitors the forested land base with field data collected over...
Resource Type:: Article
Full Text:: Forest Service, Rocky Mountain Research Station, Ogden, UT 84401, USA b U.S. Department of Agriculture

Spatial and temporal patterns of forest disturbance and regrowth within the area of the Northwest Forest Plan

Creator:: Kennedy, Robert E., Yang, Zhiqiang, Cohen, Warren B., Pfaff, Eric, Braaten, Justin, and Nelson, Peder
Abstract:: Understanding fine-grain patterns of forest disturbance and regrowth at the landscape scale is critical for effective management, particularly in forests in western Washington, Oregon, and California, U.S., where the policy known as the Northwest Forest Plan (NWFP) was imposed in 1994 over > 8 million ha of forest in an...
Resource Type:: Article
Full Text:: University, United States b USDA Forest Service, PNW Research Station, United States ⁎ Corresponding author

Assessing the Carbon Consequences of Western Juniper (Juniperus occidentalis) Encroachment Across Oregon, USA

Creator:: Campbell, John L., Kennedy, Robert E., Cohen, Warren B., and Miller, Richard F.
Abstract:: Our ability to assess the continental impacts of woody encroachment remains compromised by the paucity of studies quantifying regional encroachment rates. This knowledge gap is especially apparent when it comes to quantifying the impact of woody encroachment on large-scale carbon dynamics. In this study, we use a combination of aerial...
Resource Type:: Article
Full Text:: : USDA Forest Service, Pacific Northwest Research Station. Resource Bulletin No. PNW-164. 25 p. HEALEY

Using Landsat-derived disturbance and recovery history and lidar to map forest biomass dynamics

Creator:: Pflugmacher, Dirk, Cohen, Warren B., Kennedy, Robert E., and Yang, Zhiqiang
Abstract:: Improved monitoring of forest biomass and biomass change is needed to quantify natural and anthropogenic effects on the terrestrial carbon cycle. Landsat's temporal and spatial coverage, moderate spatial resolution, and long history of earth observations provide a unique opportunity for characterizing vegetation changes across large areas and long time scales....
Resource Type:: Article
Full Text:: Richardson Hall, Corvallis, OR 97331, USA b USDA Forest Service, Pacific Northwest Research Station, Forestry

ScholarsArchive@OSU

Decadal Trends in Net Ecosystem Production and Net Ecosystem Carbon Balance for a Regional Socioecological System

A Landsat time series approach to characterize bark beetle and defoliator impacts on tree mortality and surface fuels in conifer forests

Spatiotemporal dynamics of recent mountain pine beetle and western spruce budworm outbreaks across the Pacific Northwest Region, USA

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Does wildfire likelihood increase following insect outbreaks in conifer forests?

Improving estimates of forest disturbance by combining observations from Landsat time series with U.S. Forest Service Forest Inventory and Analysis data

Spatial and temporal patterns of forest disturbance and regrowth within the area of the Northwest Forest Plan

Assessing the Carbon Consequences of Western Juniper (Juniperus occidentalis) Encroachment Across Oregon, USA

Using Landsat-derived disturbance and recovery history and lidar to map forest biomass dynamics

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