Index Catalog // ScholarsArchive@OSU

Enlargement of canopy gaps associated with a fungal pathogen in Yosemite Valley, California

Creator:: Rizzo, D. M., Slaughter, G. W., and Parmeter, J. R.
Abstract:: The enlargement of 21 canopy gaps associated with the root pathogen Heterobasidion annosum (Fr.:Fr.) Bref. (; Fomes annosus (Fr.) Karst.) in the mixed-conifer forest of Yosemite Valley was monitored between 1971 and 1998. Mean expanded gap area was 232 m2 (range 38–802 m2) in 1971 and 1455 m2 (range 150–4216...
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Full Text:: - cluding Sue Fritzke, Louise Johnson, and Brian Mattos. Malcolm North, USDA Forest Service, and an

Impact of ungulate exclusion on understorey succession in relation to forest management in the Intermountain Western United States

Creator:: Pekin, Burak K., Endress, Bryan A., Wisdom, Michael J., Naylor, Bridgett J., and Parks, Catherine G.
Abstract:: QUESTIONS: Do successional trajectories in plant diversity, heterogeneity and dominance respond differently to ungulate exclusion in unmanaged forests vs managed forests that are thinned and burned? Is vegetation in recently thinned and burned stands more sensitive to changes in the grazing regime? LOCATION: Northeast OR, USA. METHODS: We evaluated changes...
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Full Text:: relation to forest management in the Intermountain Western United States Impact of ungulate exclusion on

Characterizing Community Forests in the United States

Creator:: Hajjar, Reem, McGinley, Kathleen, Charnley, Susan, Frey, Gregory E., Hovis, Meredith, Cubbage, Frederick W., Schelhas, John, and Kornhauser, Kailey
Abstract:: Research on community forests, primarily governed and managed by local forest users, in the United States is limited, despite their growth in numbers over the past decade. We conducted a survey to inventory CFs in the U.S., and better understand their ownership and governance structures, management objectives, benefits, and financing....
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Full Text:: Institute, and the United States Forest Service (USFS) Community Forest and Open Space 109 6

United States Forest Disturbance Trends Observed Using Landsat Time Series

Creator:: Masek, Jeffrey G., Goward, Samuel N., Kennedy, Robert E., Cohen, Warren B., Moisen, Gretchen G., Schleeweis, Karen, and Huang, Chengquan
Abstract:: Disturbance events strongly affect the composition, structure, and function of forest ecosystems; however, existing US land management inventories were not designed to monitor disturbance. To begin addressing this gap, the North American Forest Dynamics (NAFD) project has examined a geographic sample of 50 Landsat satellite image time series to assess...
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Full Text:: United States Forest Disturbance Trends Observed

Medusahead Ecology and Management: California Annual Grasslands to the Intermountain West

Creator:: Nafus, Aleta M. and Davies, Kirk W.
Abstract:: The spread of medusahead across the western United States has severe implications for a wide range of ecosystem services. Medusahead invasion reduces biodiversity, wildlife habitat and forage production, and often leads to increased fire frequency and restoration costs. Medusahead is problematic in the Intermountain West and California Annual Grasslands. The...
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Full Text:: Intermountain West Aleta M. Nafus and Kirk W. Davies* The spread of medusahead across the western United States

Federal forest-fire policy in the United States

Creator:: Stephens, Scott L. and Ruth, Lawrence W.
Abstract:: Forest-fire policy of U.S. federal agencies has evolved from the use of small patrols in newly created National Parks to diverse policy initiatives and institutional arrangements that affect millions of hectares of forests. Even with large expenditures and substantial infrastructure dedicated to fire suppression, the annual area burned by wildfire...
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Full Text:: . 532–542 q 2005 by the Ecological Society of America FEDERAL FOREST-FIRE POLICY IN THE UNITED STATES

Mapping Multiple Forest Threats in the Northwestern United States

Creator:: Kline, Jeffrey D., Kerns, Becky K., Day, Michelle A., and Hammer, Roger B.
Abstract:: US forestlands are increasingly subject to disturbances including wildfire, insects and disease, and urban and exurban development. Devising strategies for addressing these "forest threats" depends on anticipating where individual disturbances are most likely and where they might occur in combination. However, many spatial data sets describing forest threats are produced...
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Full Text:: within the five-state northwestern United States, in which a given disturbance threat may be ex

Evaluating the Return in Ecosystem Services from Investment in Public Land Acquisitions

Creator:: Kovacs, Kent, Polasky, Stephen, Nelson, Erik, Keeler, Bonnie L., Pennington, Derric, Plantinga, Andrew J., and Taff, Steven J.
Abstract:: We evaluate the return on investment (ROI) from public land conservation in the state of Minnesota, USA. We use a spatially-explicit modeling tool, the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST), to estimate how changes in land use and land cover (LULC), including public land acquisitions for conservation, influence...
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Full Text:: , Washington, DC, United States of America, 6 Department of Agricultural and Resource Economics, Oregon State

Short-term responses of native bees to livestock and implications for managing ecosystem services in grasslands

Creator:: Kimoto, Chiho, DeBano, Sandra J., Thorp, Robbin W., Taylor, Robert V., Schmalz, Heidi, DelCurto, Timothy, Johnson, Tracey, Kennedy, Patricia L., and Rao, Sujaya
Abstract:: Rangelands are significant providers of ecosystem services in agroecosystems world‐wide. Yet few studies have investigated how different intensities of livestock grazing impact one important provider of these ecosystem services—native bees. We conducted the first large‐scale manipulative study on the effect of a gradient of livestock grazing intensities on native bees...
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Full Text:: both private and public land in the United States (Knight et al. 2002). The management of organ- isms

Nature as capital: Advancing and incorporating ecosystem services in United States federal policies and programs

Creator:: Schaefer, Mark, Goldman, Erica, Bartuska, Ann M., Sutton-Grier, Ariana, and Lubchenco, Jane
Abstract:: The concept of nature as capital is gaining visibility in policies and practices in both the public and private sectors. This change is due to an improved ability to assess and value ecosystem services, as well as to a growing recognition of the potential of an ecosystem services approach to...
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Full Text:: Forest Service is also helping states address ecosystem services flows, benefits, and values in statewide

Forest disturbance across the conterminous United States from 1985-2012: The emerging dominance of forest decline

Creator:: Cohen, Warren B., Yang, Zhiqiang, Stehman, Stephen V., Schroeder, Todd A., Bell, David M., Masek, Jeffrey G., Huang, Chengquan, and Meigs, Garrett W.
Abstract:: Evidence of shifting dominance among major forest disturbance agent classes regionally to globally has been emerging in the literature. For example, climate-related stress and secondary stressors on forests (e.g., insect and disease, fire) have dramatically increased since the turn of the century globally, while harvest rates in the western US...
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Full Text:: conterminous United States from 1985-2012: The emerging dominance of forest decline Cohen, W. B., Yang, Z

Mapping Atmospheric Moisture Climatologies across the Conterminous United States

Creator:: Daly, Christopher, Smith, Joseph I., and Olson, Keith V.
Abstract:: Spatial climate datasets of 1981–2010 long-term mean monthly average dew point and minimum and maximum vapor pressure deficit were developed for the conterminous United States at 30-arcsec (~800m) resolution. Interpolation of long-term averages (twelve monthly values per variable) was performed using PRISM (Parameter-elevation Relationships on Independent Slopes Model). Surface stations...
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Full Text:: the Conterminous United States Mapping Atmospheric Moisture Climatologies across the Conterminous

Viewing forests through the lens of complex systems science

Creator:: Filotas, Elise, Parrott, Lael, Burton, Philip J., Chazdon, Robin L., Coates, K. David, Coll, Lluis, Haeussler, Sybille, Martin, Kathy, Nocentini, Susanna, Puettmann, Klaus J., Putz, Francis E., Simard, Suzanne W., and Messier, Christian
Abstract:: Complex systems science provides a transdisciplinary framework to study systems characterized by (1) heterogeneity, (2) hierarchy, (3) self‐organization, (4) openness, (5) adaptation, (6) memory, (7) non‐linearity, and (8) uncertainty. Complex systems thinking has inspired both theory and applied strategies for improving ecosystem resilience and adaptability, but applications in forest ecology...
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Full Text:: 11Department of Forest Ecosystems and Society, Oregon State University, Corvallis, Oregon 97331 USA

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...
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Full Text:: flown since 1947 in US Forest Service Region 6 (Oregon and Washington; data available online: http://www

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...
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Full Text:: flown since 1947 in US Forest Service Region 6 (Oregon and Washington; data available online: http://www

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...
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Full Text:: flown since 1947 in US Forest Service Region 6 (Oregon and Washington; data available online: http://www

Managing fire-prone forests in the western United States

Creator:: Noss, Reed F., Franklin, Jerry F., Baker, William L., Schoennagel, Tania, and Moyle, Peter B.
Abstract:: The management of fire-prone forests is one of the most controversial natural resource issues in the US today, particularly in the west of the country. Although vegetation and wildlife in these forests are adapted to fire, the historical range of fire frequency and severity was huge. When fire regimes are...
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Full Text:: United States Reed F Noss1, Jerry F Franklin2, William L Baker3, Tania Schoennagel4, and Peter B

A Comparison of the Spatial Linear Model to Nearest Neighbor (k-NN) Methods for Forestry Applications

Creator:: Ver Hoef, Jay M. and Temesgen, Hailemariam
Abstract:: Forest surveys provide critical information for many diverse interests. Data are often collected from samples, and from these samples, maps of resources and estimates of aerial totals or averages are required. In this paper, two approaches for mapping and estimating totals; the spatial linear model (SLM) and k-NN (k-Nearest Neighbor)...
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Full Text:: , Corvallis, Oregon, United States of America Abstract Forest surveys provide critical information for many

Effect of Climate on the Distribution of Fusarium spp. Causing Crown Rot of Wheat in the Pacific Northwest of the United States

Creator:: Poole, Grant J., Smiley, Richard W., Walker, Carl, Huggins, David, Rupp, Richard, Abatzoglou, John T., Garland-Campbell, Kimberly, and Paulitz, Timothy C.
Abstract:: Fusarium crown rot (FCR) is one of the most widespread root and crown diseases of wheat in the Pacific Northwest (PNW) of the United States. Our objectives were to characterize crown rot severity and distribution throughout the PNW by conducting a survey of 210 fields covering the diverse dryland wheat-producing...
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Full Text:: 97801; fourth author: United States Department of Agriculture–Agricultural Research Service (USDA-ARS

Reconciling estimates of the contemporary North American carbon balance among terrestrial biosphere models, atmospheric inversions, and a new approach for estimating net ecosystem exchange from inventory-based data

Creator:: Hayes, Daniel J., Turner, David P., Stinson, Graham, McGuire, A. David, Wei, Yaxing, West, Tristram O., Heath, Linda S., de Jong, Bernardus, McConkey, Brian G., Birdsey, Richard A., Kurz, Werner A., Jacobson, Andrew R., Huntzinger, Deborah N., Pan, Yude, Post, W. Mac, and Cook, Robert B.
Abstract:: We develop an approach for estimating net ecosystem exchange (NEE) using inventory-based information over North America (NA) for a recent 7-year period (ca. 2000–2006). The approach notably retains information on the spatial distribution of NEE, or the vertical exchange between land and atmosphere of all non-fossil fuel sources and sinks...
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Full Text:: Forest Service, Victoria, BC V8Z 1M5, Canada, §U.S. Geological Survey, Alaska Cooperative Fish and

Amplification and dampening of soil respiration by changes in temperature variability

Creator:: Sierra, C. A., Harmon, M. E., Thomann, E., Perakis, S. S., and Loescher, H. W.
Abstract:: Accelerated release of carbon from soils is one of the most important feedbacks related to anthropogenically induced climate change. Studies addressing the mechanisms for soil carbon release through organic matter decomposition have focused on the effect of changes in the average temperature, with little attention to changes in temperature variability....
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Full Text:: . Harmon1, E. Thomann2, S. S. Perakis3, and H. W. Loescher4 1Department of Forest Ecosystems and Society

Persistence of Triploid Grass Carp in Devils Lake, Oregon

Creator:: Clemens, Benjamin J., Spangler, John J., Robertson, Paul L., Galovich, Gary M., Banner, Craig R., Gunckel, Stephanie L., Ketchum, Lindsay L., Bowden, R. Kanani, Spagnoli, Sean T., Kent, Michael L., and Kirk, James P.
Abstract:: Grass carp Ctenopharyngodon idella are sometimes used as a biological tool for managing aquatic vegetation in reservoirs. Sterile, triploid fish were stocked in Devils Lake, Oregon, during 1986, 1987, and 1993 to control aquatic vegetation. We present a case study for using multiple measures on the same fish to determine...
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Full Text:: Ctenopharyngodon idella were introduced from Malaysia into the United States in 1963 as a biological control of

Economic-based projections of future land use in the conterminous United States under alternative policy scenarios

Creator:: Radeloff, V. C., Nelson, E., Plantinga, A. J., Lewis, D. J., Helmers, D., Lawler, J. J., Withey, J. C., Beaudry, F., Martinuzzi, S., Butsic, V., Lonsdorf, E., White, D., and Polasky, S.
Abstract:: Land-use change significantly contributes to biodiversity loss, invasive species spread, changes in biogeochemical cycles, and the loss of ecosystem services. Planning for a sustainable future requires a thorough understanding of expected land use at the fine spatial scales relevant for modeling many ecological processes and at dimensions appropriate for regional...
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Full Text:: United States, with large increases in urban land (79%) and forest (7%), and declines in cropland (�16

Fish Misidentification and Potential Implications to Monitoring Within the San Francisco Estuary, California

Creator:: Kirsch, Joseph E., Day, Julie L., Peterson, James T., and Fullerton, David K.
Abstract:: Fish monitoring programs often rely on the collection, species identification, and counting of individual fish over time to inform natural resource management decisions. Thus, the utility of the data used to inform these decisions can be negatively affected by species misidentification. Fish species misidentification bias can be minimized by confirming...
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Full Text:: T. Peterson, David K. Fullerton J.E. Kirsch U.S. Forest Service, Washington Office, Enterprise

Regional variation in stand structure and development in forests of Oregon, Washington, and inland Northern California

Creator:: Reilly, Matthew J. and Spies, Thomas A.
Abstract:: Despite its importance to biodiversity and ecosystem function, patterns and drivers of regional scale variation in forest structure and development are poorly understood. We characterize structural variation, create a hierarchical classification of forest structure, and develop an empirically based framework for conceptualizing structural development from 11,091 plots across 25 million...
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Full Text:: of Forestry, Oregon State University, Corvallis, Oregon 97331 USA 2United States Department of

Avian Species Richness in Relation to Intensive Forest Management Practices in Early Seral Tree Plantations

Creator:: Jones, Jay E., Kroll, Andrew J., Giovanini, Jack, Duke, Steven D., Ellis, Tana M., and Betts, Matthew G.
Abstract:: •Background: Managers of landscapes dedicated to forest commodity production require information about how practices influence biological diversity. Individual species and communities may be threatened if management practices truncate or simplify forest age classes that are essential for reproduction and survival. For instance, the degradation and loss of complex diverse forest...
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Full Text:: , Weyerhaeuser NR, Federal Way, Washington, United States of America, 3 Department of Forest Ecosystems and

Local Variability Mediates Vulnerability of Trout Populations to Land Use and Climate Change

Creator:: Penaluna, Brooke E., Dunham, Jason B., Railsback, Steve F., Arismendi, Ivan, Johnson, Sherri L., Bilby, Robert E., Safeeq, Mohammad, and Skaugset, Arne E.
Abstract:: Land use and climate change occur simultaneously around the globe. Fully understanding their separate and combined effects requires a mechanistic understanding at the local scale where their effects are ultimately realized. Here we applied an individual-based model of fish population dynamics to evaluate the role of local stream variability in...
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Full Text:: Research Station, United States Forest Service, 3200 SW JeffersonWay, Corvallis, OR, 97331, United States

Post-fire tree establishment and early cohort development in conifer forests of the western Cascades of Oregon, USA

Creator:: Tepley, Alan J., Swanson, Frederick J., and Spies, Thomas A.
Abstract:: Early‐seral ecosystems make important contributions to regional biodiversity by supporting high abundance and diversity of many plant and animal species that are otherwise rare or absent from closed‐canopy forests. Therefore, the period of post‐fire tree establishment is a key stage in forest stand and ecosystem development that can be viewed...
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Full Text:: Geosciences and Forest Ecosystems and Society, Oregon State University, Corvallis, Oregon 97331-5506 USA 2US

Linking nonstructural carbohydrate dynamics to gas exchange and leaf hydraulic behavior in Pinus edulis and Juniperus monosperma

Creator:: Woodruff, David R., Meinzer, Frederick C., Marias, Danielle E., Sevanto, Sanna, Jenkins, Michael W., and McDowell, Nate G.
Abstract:: Leaf hydraulics, gas exchange and carbon storage in Pinus edulis and Juniperus monosperma, two tree species on opposite ends of the isohydry–anisohydry spectrum, were analyzed to examine relationships between hydraulic function and carbohydrate dynamics. Leaf hydraulic vulnerability, leaf water potential (Wl), leaf hydraulic conductance (Kleaf), photosynthesis (A), stomatal conductance (gs)...
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Full Text:: Sevanto3, Michael W. Jenkins4 and Nate G. McDowell3 1USDA Forest Service, PNW Research Station, 3200 SW

Multi-scale spatial controls of understory vegetation in Douglas-fir–western hemlock forests of western Oregon, USA

Creator:: Burton, Julia I., Ganio, Lisa M., and Puettmann, Klaus J.
Abstract:: Forest understory vegetation is influenced by broad-scale variation in climate, intermediate-scale variation in topography, disturbance and neighborhood interactions. However, little is known about how these multi-scale controls interact to influence observed spatial patterns. We examined relationships between the aggregated cover of understory plant species (%C[subscript U]) and multi-scale controls using...
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Full Text:: Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, Oregon

Genetic variation in adaptive traits and seed transfer zones for Pseudoroegneria spicata (bluebunch wheatgrass) in the northwestern United States

Creator:: St. Clair, John Bradley, Kilkenny, Francis F., Johnson, Richard C., Shaw, Nancy L., and Weaver, George
Abstract:: A genecological approach was used to explore genetic variation in adaptive traits in Pseudoroegneria spicata, a key restoration grass, in the intermountain western United States. Common garden experiments were established at three contrasting sites with seedlings from two maternal parents from each of 114 populations along with five commercial releases...
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Full Text:: Richard C. Johnson,2 Nancy L. Shaw3 and George Weaver4 1 United States Department of Agriculture Forest

Current and Future Land Use around a Nationwide Protected Area Network

Creator:: Hamilton, Christopher M., Martinuzzi, Sebastian, Plantinga, Andrew J., Radeloff, Volker C., Lewis, David J., Thogmartin, Wayne E., Heglund, Patricia J., and Pidgeon, Anna M.
Abstract:: Land-use change around protected areas can reduce their effective size and limit their ability to conserve biodiversity because land-use change alters ecological processes and the ability of organisms to move freely among protected areas. The goal of our analysis was to inform conservation planning efforts for a nationwide network of...
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Full Text:: Department of Forest and Wildlife Ecology, University of Wisconsin, Madison, Wisconsin, United States of

Evaluating the agreement between measurements and models of net ecosystem exchange at different times and timescales using wavelet coherence: an example using data from the North American Carbon Program Site-Level Interim Synthesis

Creator:: Stoy, P. C., Dietze, M. C., Richardson, A. D., Vargas, R., Barr, A. G., Anderson, R. S., Arain, M. A., Baker, Ian T., Black, T. Andrew, Chen, J. M., Cook, R. B., Gough, C. M., Grant, R. F., Hollinger, D. Y., Izaurralde, R. C., Kucharik, C. J., Lafleur, P., Law, B. E., Liu, S., Lokupitiya, E., Luo, Y., Munger, J. W., Peng, C., Poulter, B., Price, D. T., Ricciuto, D. M., Riley, W. J., Sahoo, A. K., Schaefer, K., Schwalm, C. R., Tian, H., Verbeeck, H., and Weng, E.
Abstract:: Earth system processes exhibit complex patterns across time, as do the models that seek to replicate these processes. Model output may or may not be significantly related to observations at different times and on different frequencies. Conventional model diagnostics provide an aggregate view of model–data agreement, but usually do not...
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Full Text:: of Alberta, Edmonton, AB T6G 2E3, Canada 14Northern Research Station, USDA Forest Service, Durham, NH

Analysis of potential impacts of climate change on forests of the United States Pacific Northwest

Creator:: Latta, Gregory, Temesgen, Hailemariam, Adams, Darius M., and Barrett, Tara
Abstract:: As global climate changes over the next century, forest productivity is expected to change as well. Using PRISM climate and productivity data measured on a grid of 3356 plots, we developed a simultaneous autoregressive (SAR) model to estimate the impacts of climate change on potential productivity of Pacific Northwest (PNW)...
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Full Text:: forests of the United States Pacific Northwest Forest Ecology and Management xxx (2009) xxx–xxx G Model

Comparison of submersible-survey and hydroacoustic-survey estimates of fish density on a rocky bank

Creator:: Starr, Richard M., Fox, David S., Hixon, Mark Anthony, Tissot, Brian N., Johnson, Gary E., and Barss, William H.
Abstract:: Submersible belt-transect surveys along a rocky bottom were combined with acoustic surveys of the water column to estimate depth distribution and density of fishes at Stonewall Bank, Oregon in the northeastern Pacific Ocean from September through October 1991. The objectives of the study were to determine the proportion of fish...
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Full Text:: Zoology, Oregon State University Corvallis, Oregon 9733 I -29 I 4 Brian N. Tissot Marine Science

Predicting foundation bunchgrass species abundances: model-assisted decision-making in protected-area sagebrush steppe

Creator:: Rodhouse, Thomas J., Irvine, Kathryn M., Sheley, Roger L., Smith, Brenda S., Hoh, Shirley, Esposito, Daniel M., and Mata-Gonzalez, Ricardo
Abstract:: Foundation species are structurally dominant members of ecological communities that can stabilize ecological processes and influence resilience to disturbance and resistance to invasion. Being common, they are often overlooked for conservation but are increasingly threatened from land use change, biological invasions, and over‐exploitation. The pattern of foundation species abundances over...
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Full Text:: University Way, Suite 2, Bozeman, Montana 59715 USA 3Agricultural Research Service, United States Department

Spatial and temporal residential density patterns from 1940 to 2000 in and around the Northern Forest of the Northeastern United States

Creator:: Mockrin, Miranda H., Stewart, Susan I., Radeloff, Volker C., Hammer, Roger B., and Johnson, Kenneth M.
Abstract:: Over the past 60 years, housing growth has outpaced population growth in the United States. Conservationists are concerned about the far-reaching environmental impacts of housing development, particularly in rural areas. We use clustering analysis to examine the pattern and distribution of housing development since 1940 in and around the Northern...
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Full Text:: density patterns from 1940 to 2000 in and around the Northern Forest of the Northeastern United States

Five new species and three new subspecies of Erebidae and Noctuidae (Insecta, Lepidoptera) from Northwestern North America, with notes on Chytolita Grote (Erebidae) and Hydraecia Guenée (Noctuidae)

Creator:: Crabo, Lars G., Davis, Melanie, Hammond, Paul, Mustelin, Tomas, and Shepard, Jon
Abstract:: Several taxonomic issues in the moth families Erebidae and Noctuidae are addressed for Northwestern North America. Drasteria parallela Crabo & Mustelin and Cycnia oregonensis tristis Crabo in the Erebidae and Eudryas brevipennis bonneville Shepard & Crabo, Resapamea diluvius Crabo, Resapamea angelika Crabo, Resapamea mammuthus Crabo, Fishia nigrescens Hammond & Crabo,...
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Full Text:: , Municipality of Crowsnest Pass, Alberta, Canada. Keywords Canada, United States, Alaska, CO1, mitochondrial

Regional Contingencies in the Relationship between Aboveground Biomass and Litter in the World’s Grasslands

Creator:: O’Halloran, Lydia R., Chu, Chengjin, Bakker, Jonathan D., Davies, Kendi F., Du, Guozhen, Firn, Jennifer, Hagenah, Nicole, Hofmockel, Kirsten S., Knops, Johannes M. H., Li, Wei, Melbourne, Brett A., Borer, Elizabeth T., Morgan, John W., Orrock, John L., Prober, Suzanne M., Stevens, Carly J., Seabloom, Eric W., MacDougall, Andrew S., Cleland, Elsa E., McCulley, Rebecca L., Hobbie, Sarah, Harpole, W. Stan, and DeCrappeo, Nicole M.
Abstract:: Based on regional-scale studies, aboveground production and litter decomposition are thought to positively covary, because they are driven by shared biotic and climatic factors. Until now we have been unable to test whether production and decomposition are generally coupled across climatically dissimilar regions, because we lacked replicated data collected within...
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Full Text:: 1Department of Zoology, Oregon State University, Corvallis, Oregon, United States of America, 2Department of

Survival and growth patterns of white spruce (Picea glauca [Moench] Voss) rangewide provenances and their implications for climate change adaptation

Creator:: Lu, Pengxin, Parker, William H., Cherry, Marilyn, Colombo, Steve, Parker, William C., Man, Rongzhou, and Roubal, Ngaire
Abstract:: Intraspecific assisted migration (ISAM) through seed transfer during artificial forest regeneration has been suggested as an adaptation strategy to enhance forest resilience and productivity under future climate. In this study, we assessed the risks and benefits of ISAM in white spruce based on long-term and multilocation, rangewide provenance test data....
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Full Text:: white spruce grown in plantations in the upper Great Lakes region of the United States (Rauscher and

U.S. Forest Service research : its administration and management

Creator:: Krugman, Stanley L.
Abstract:: The U.S. Forest Service administers the world's largest forestry research organization. From its modest beginning in 1876, some 30 years before the United States national forest system was established, the research branch has devoted its effort to meet current and future information needs of the forestry community of the United...
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Full Text:: community of the United States, not just for the U.S. Forest Service. The research branch is one of three

Intra‐ and inter‐annual variation in gray whale body condition on a foraging ground

Creator:: Soledade Lemos, Leila, Burnett, Jonathan D., Chandler, Todd E., Sumich, James L., and Torres, Leigh G.
Abstract:: Baleen whales store energy gained on foraging grounds to support reproduction and other metabolic needs while fasting for long periods during migration. Whale body condition can be used to monitor foraging success, and thus better understand and anticipate individual‐ and population‐level trends in reproduction and survival. We assessed the body...
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Full Text:: Systems Laboratory, Forest Engineering, Resources and Management Department, Oregon State University

Preliminary Genomic Characterization of Ten Hardwood Tree Species from Multiplexed Low Coverage Whole Genome Sequencing

Creator:: Staton, Margaret, Best, Teodora, Khodwekar, Sudhir, Owusu, Sandra, Xu, Tao, Xu, Yi, Jennings, Tara, Cronn, Richard, Arumuganathan, A. Kathiravetpilla, Coggeshall, Mark, Gailing, Oliver, Liang, Haiying, Romero-Severson, Jeanne, Schlarbaum, Scott, and Carlson, John E.
Abstract:: Forest health issues are on the rise in the United States, resulting from introduction of alien pests and diseases, coupled with abiotic stresses related to climate change. Increasingly, forest scientists are finding genetic/genomic resources valuable in addressing forest health issues. For a set of ten ecologically and economically important native...
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Full Text:: for Tree Molecular Genetics, Pennsylvania State University, University Park, PA, United States of

Development of a New USDA Plant Hardiness Zone Map for the United States

Creator:: Daly, Christopher, Widrlechner, Mark P., Halbleib, Michael D., Smith, Joseph I., and Gibson, Wayne P.
Abstract:: In many regions of the world, the extremes of winter cold are a major determinant of the geographic distribution of perennial plant species and of their successful cultivation. In the United States, the U.S. Department of Agriculture (USDA) Plant Hardiness Zone Map (PHZM) is the primary reference for defining geospatial...
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Full Text:: is greatest (.58C; 98F) in the intermountain region of the western United States and also in the

Potential impacts of climate change on soil erosion vulnerability across the conterminous United States

Creator:: Segura, C., Sun, G., McNulty, S., and Zhang, Y.
Abstract:: Rainfall runoff erosivity (R) is one key climate factor that controls water erosion. Quantifying the effects of climate change–induced erosivity change is important for identifying critical regions prone to soil erosion under a changing environment. In this study we first evaluate the changes of R from 1970 to 2090 across...
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Full Text:: Carolina State University. Partial support was provided by USDA Forest Service Eastern Environmental

Carbon emissions from decomposition of fire-killed trees following a large wildfire in Oregon, United States

Creator:: Campbell, John L., Fontaine, Joseph B., and Donato, Daniel C.
Abstract:: A key uncertainty concerning the effect of wildfire on carbon dynamics is the rate at which fire-killed biomass (e.g., dead trees) decays and emits carbon to the atmosphere. We used a ground-based approach to compute decomposition of forest biomass killed, but not combusted, in the Biscuit Fire of 2002, an...
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Full Text:: trees following a large wildfire in Oregon, United States Carbon emissions from decomposition of fire

Key areas for conserving United States’ biodiversity likely threatened by future land use change

Creator:: Martinuzzi, S., Radeloff, V. C., Higgins, J. V., Helmers, D. P., Plantinga, A. J., and Lewis, D. J.
Abstract:: A major challenge for biodiversity conservation is to mitigate the effects of future environmental change, such as land use, in important areas for biodiversity conservation. In the United States, recent conservation efforts by The Nature Conservancy and partners have identified and mapped the nation's Areas of Biodiversity Significance (ABS), representing...
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Full Text:: Key areas for conserving United States’ biodiversity likely

Forest Service Special Agent in Charge Report: Nationwide Study

Creator:: Chavez, Deborah J. and Tynon, Joanne F.
Abstract:: This study is the second in a series of studies to evaluate perceptions of USDA Forest Service law enforcement personnel of the roles, responsibilities, and issues entailed in their jobs. An e-mail survey was administered to the nine Forest Ser-vice special agents in charge (SACs) across the United States. All...
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Full Text:: : Nationwide Study United States Department of Agriculture Forest Service Pacific Southwest Research

Forest Service Patrol Captains and Patrol Commanders Report: Nationwide Study

Creator:: Chavez, Deborah J. and Tynon, Joanne F.
Abstract:: This is the third in a series of studies to evaluate perceptions of USDA Forest Service law enforcement personnel of the roles, responsibilities, and issues entailed in their jobs. An e-mail survey was administered to the 79 Forest Service patrol captains and patrol commanders (PCs) across the United States. Seventy...
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Full Text:: Study Deborah J. Chavez and Joanne F. Tynon United States Department of Agriculture Forest Service

Trends in Developed Land Cover Adjacent to Habitat for Threatened Salmon in Puget Sound, Washington, U.S.A.

Creator:: Bartz, Krista K., Ford, Michael J., Beechie, Timothy J., Fresh, Kurt L., Pess, George R., Kennedy, Robert E., Rowse, Melinda L., and Sheer, Mindi
Abstract:: For widely distributed species at risk, such as Pacific salmon (Oncorhynchus spp.), habitat monitoring is both essential and challenging. Only recently have widespread monitoring programs been implemented for salmon habitat in the Pacific Northwest. Remote sensing data, such as Landsat images, are therefore a useful way to evaluate trends prior...
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Full Text:: Atmospheric Sciences; Oregon State University, Corvallis, Oregon, United States of America ¤ Current address

Estimating Global ‘‘Blue Carbon’’ Emissions from Conversion and Degradation of Vegetated Coastal Ecosystems

Creator:: Pendleton, Linwood, Donato, Daniel C., Murray, Brian C., Crooks, Stephen, Jenkins, W. Aaron, Sifleet, Samantha, Craft, Christopher, Fourqurean, James W., Kauffman, J. Boone, Marba, Nuria, Megonigal, Patrick, Pidgeon, Emily, Herr, Dorothee, Gordon, David, and Baldera, Alexis
Abstract:: Recent attention has focused on the high rates of annual carbon sequestration in vegetated coastal ecosystems—marshes, mangroves, and seagrasses—that may be lost with habitat destruction (‘conversion’). Relatively unappreciated, however, is that conversion of these coastal ecosystems also impacts very large pools of previously-sequestered carbon. Residing mostly in sediments, this ‘blue...
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Full Text:: , United States of America and Center for International Forest Research, Bogor, Indonesia, 8 Department of

Projected land-use change impacts on ecosystem services in the U.S.

Creator:: Lawler, Joshua J., Lewis, David J., Nelson, Erik, Plantinga, Andrew J., Polasky, Stephen, Withey, John C., Helmers, David P., Martinuzzi, Sebastián, Pennington, Derric, and Radeloff, Volker C.
Abstract:: Providing food, timber, energy, housing, and other goods and services, while maintaining ecosystem functions and biodiversity that underpin their sustainable supply, is one of the great challenges of our time. Understanding the drivers of land-use change and how policies can alter land-use change will be critical to meeting this challenge....
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Full Text:: for Forest Types of the United States. (U.S. Department of Agriculture, Newtown Square, PA). 27

Amount and distribution of coarse woody debris in pine ecosystems of north-western Spain, Russia and the United States

Creator:: Herrero, Celia, Krankina, Olga, Monleon, Vicente J., and Bravo, Felipe
Abstract:: The quantity and characteristics of coarse woody debris (CWD) were examined in four distinct pine ecosystems of north-western (NW) Spain, NW Russia and the NW USA. The average CWD volume and biomass ranged from 3.76 m³ ha⁻¹, 1.55 Mg ha⁻¹ in pine plantations in NW Spain to 24.86 m3 ha⁻¹,...
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Full Text:: for tree species in the United States: a synthesis. Gen. Tech. Rep. NRS-GTR- 29, USDA Forest

An Online Database for Informing Ecological Network Models: http://kelpforest.ucsc.edu

Creator:: Beas-Luna, Rodrigo, Novak, Mark, Carr, Mark H., Tinker, Martin T., Black, August, Caselle, Jennifer E., Hoban, Michael, Malone, Dan, and Iles, Alison
Abstract:: Ecological network models and analyses are recognized as valuable tools for understanding the dynamics and resiliency of ecosystems, and for informing ecosystem-based approaches to management. However, few databases exist that can provide the life history, demographic and species interaction information necessary to parameterize ecological network models. Faced with the difficulty...
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Full Text:: , United States of America, 2 Department of Integrative Biology, Oregon State University, Corvallis

Development of Molecular Markers for Determining Continental Origin of Wood from White Oaks (Quercus L. sect. Quercus)

Creator:: Schroeder, Hilke, Cronn, Richard, Yanbaev, Yulai, Jennings, Tara, Mader, Malte, Degen, Bernd, and Kersten, Birgit
Abstract:: To detect and avoid illegal logging of valuable tree species, identification methods for the origin of timber are necessary. We used next-generation sequencing to identify chloroplast genome regions that differentiate the origin of white oaks from the three continents; Asia, Europe, and North America. By using the chloroplast genome of...
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Full Text:: Research Station, Corvallis, Oregon, United States of America, 3 Bashkir State University, Ufa, Russia, 4

A Meta-Analysis of Lesser Prairie-Chicken Nesting and Brood-Rearing Habitats: Implications for Habitat Management

Creator:: Hagen, Christian A., Grisham, Blacke A., Boal, Clint W., and Haukos, David A.
Abstract:: The distribution and range of lesser prairie-chicken (Tympanuchus pallidicinctus) has been reduced by >90% since European settlement of the Great Plains of North America. Currently, lesser prairie-chickens occupy 3 general vegetation communities: sand sagebrush (Artemisia filifolia), sand shinnery oak (Quercus havardii), and mixed-grass prairies juxtaposed with Conservation Reserve Program grasslands....
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Full Text:: , United States Geological Survey, Texas Cooperative Fish and Wildlife Research Unit, Texas Tech University

Agriculture Afforestation for Carbon Sequestration Under Carbon Markets in the United States: Leakage Behavior from Regional Allowance Programs

Creator:: Haim, David, White, Eric M., and Alig, Ralph J.
Abstract:: This study quantifies how leakage behavior from afforesting agricultural land affects the intensification of agricultural production. In particular, we examine the leakage percentage from carbon offset allowance at specific southern regions in the United States as a part of a carbon market. We use the Forest and Agriculture Sector Optimization...
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Full Text:: specific southern regions in the United States as a part of a carbon market. We use the Forest and

Ungulate Browsing Maintains Shrub Diversity in the Absence of Episodic Disturbance in Seasonally-Arid Conifer Forest

Creator:: Pekin, Burak K., Wisdom, Michael J., Endress, Bryan A., Naylor, Bridgett J., and Parks, Catherine G.
Abstract:: Ungulates exert a strong influence on the composition and diversity of vegetation communities. However, little is known about how ungulate browsing pressure interacts with episodic disturbances such as fire and stand thinning. We assessed shrub responses to variable browsing pressure by cattle and elk in fuels treated (mechanical removal of...
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Full Text:: States of America, 2 Pacific Northwest Research Station, USDA Forest Service, La Grande, Oregon, United

Downstream Warming and Headwater Acidity May Diminish Coldwater Habitat in Southern Appalachian Mountain Streams

Creator:: McDonnell, T. C., Sloat, M. R., Sullivan, T. J., Dolloff, C. A., Hessburg, P. F., Povak, N. A., Jackson, W. A., and Sams C.
Abstract:: Stream-dwelling species in the U.S. southern Appalachian Mountains region are particularly vulnerable to climate change and acidification. The objectives of this study were to quantify the spatial extent of contemporary suitable habitat for acid- and thermally sensitive aquatic species and to forecast future habitat loss resulting from expected temperature increases...
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Evaluation and improvement of the Community Land Model (CLM4) in Oregon forests

Creator:: Hudiburg, T. W., Law, B. E., and Thornton, P. E.
Abstract:: Ecosystem process models are important tools for determining the interactive effects of global change and disturbance on forest carbon dynamics. Here we evaluated and improved terrestrial carbon cycling simulated by the Community Land Model (CLM4), the land model portion of the Community Earth System Model (CESM1.0.4). Our analysis was conducted...
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Full Text:: data col- lected from federal forest inventory plots (FIA) from>3000 plots in the study region. Finally

Greater sage-grouse apparent nest productivity and chick survival in Carbon County, Wyoming

Creator:: Kehmeier, Jon W., Hansen, Christopher P., Schreiber, Leslie A., Thompson, Frank R., III, Rumble, Mark A., Wojik, Nate, Millspaugh, Joshua J., and Gamo, R. Scott
Abstract:: Greater sage-grouse Centrocercus urophasianus populations across North America have been declining due to degradation and fragmentation of sagebrush habitat. As part of a study quantifying greater sage-grouse demographics prior to construction of a wind energy facility, we estimated apparent net nest productivity and survival rate of chicks associated with radio-equipped...
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Full Text:: . of Missouri, Columbia, MO 65211, USA. – M. A. Rumble, U. S. Forest Service, Rocky Mountain Research

Mapping the Global Emergence of Batrachochytrium dendrobatidis, the Amphibian Chytrid Fungus

Creator:: Olson, Deanna H., Aanensen, David M., Ronnenberg, Kathryn L., Powell, Christopher I., Walker, Susan F., Bielby, Jon, Garner, Trenton W. J., Weaver, George, The Bd Mapping Group, and Fisher, Matthew C.
Abstract:: The rapid worldwide emergence of the amphibian pathogen Batrachochytrium dendrobatidis (Bd) is having a profound negative impact on biodiversity. However, global research efforts are fragmented and an overarching synthesis of global infection data is lacking. Here, we provide results from a community tool for the compilation of worldwide Bd presence...
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Full Text:: Kingdom, 4 Department of Statistics, Oregon State University, Corvallis, Oregon, United States of America

Ecoregional Analysis of Nearshore Sea-Surface Temperature in the North Pacific

Creator:: Payne, Meredith C., Brown, Cheryl A., Reusser, Deborah A., and Lee, Henry, II
Abstract:: The quantification and description of sea surface temperature (SST) is critically important because it can influence the distribution, migration, and invasion of marine species; furthermore, SSTs are expected to be affected by climate change. To better understand present temperature regimes, we assembled a 29-year nearshore time series of mean monthly...
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Full Text:: of America, 2 Oregon State University, Corvallis, Oregon, United States of America, 3 Pacific

Implementing the Optimal Provision of Ecosystem Services

Creator:: Polasky, Stephen, Lewis, David J., Plantinga, Andrew J., and Nelson, Erik
Abstract:: Many ecosystem services are public goods whose provision depends on the spatial pattern of land use. The pattern of land use is often determined by the decisions of multiple private landowners. Increasing the provision of ecosystem services, while beneficial for society as a whole, may be costly to private landowners....
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Full Text:: /Polasky). Lewis also acknowledges funding from the United States Forest Service, Pacific Northwest

Phytophthora Have Distinct Endogenous Small RNA Populations That Include Short Interfering and microRNAs

Creator:: Fahlgren, Noah, Bollmann, Stephanie R., Kasschau, Kristin D., Cuperus, Josh T., Press, Caroline M., Sullivan, Christopher M., Chapman, Elisabeth J., Hoyer, J. Steen, Gilbert, Kerrigan B., Grunwald, Niklaus J., and Carrington, James C.
Abstract:: In eukaryotes, RNA silencing pathways utilize 20-30-nucleotide small RNAs to regulate gene expression, specify and maintain chromatin structure, and repress viruses and mobile genetic elements. RNA silencing was likely present in the common ancestor of modern eukaryotes, but most research has focused on plant and animal RNA silencing systems. Phytophthora...
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Full Text:: Agricultural Research Service, Corvallis, Oregon, United States of America Abstract In eukaryotes, RNA

Heterogeneous Occupancy and Density Estimates of the Pathogenic Fungus Batrachochytrium dendrobatidis in Waters of North America

Creator:: Chestnut, Tara, Anderson, Chauncey, Popa, Radu, Blaustein, Andrew R., Voytek, Mary, Olson, Deanna H., and Kirshtein, Julie
Abstract:: Biodiversity losses are occurring worldwide due to a combination of stressors. For example, by one estimate, 40% of amphibian species are vulnerable to extinction, and disease is one threat to amphibian populations. The emerging infectious disease chytridiomycosis, caused by the aquatic fungus Batrachochytrium dendrobatidis (Bd), is a contributor to amphibian...
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Full Text:: Headquarters, Washington DC, United States of America, 6 US Forest Service, Pacific Northwest Research Station

Cradle-to-Gate Life-Cycle Inventory and Impact Assessment of Wood Fuel Pellet Manufacturing from Hardwood Flooring Residues in the Southeastern United States

Creator:: Reed, Daniel, Bergman, Richard, Kim, Jae-Woo, Taylor, Adam, Harper, David, Jones, David, Knowles, Chris, and Puettmann, Maureen E.
Abstract:: In this article, we present cradle-to-gate life-cycle inventory (LCI) data for wood fuel pellets manufactured in the Southeast United States. We surveyed commercial pellet manufacturers in 2010, collecting annual production data for 2009. Weighted-average inputs to, and emissions from, the pelletization process were determined. The pellet making unit process was...
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Full Text:: Southeast region of the United States produced just under 550,000 Mg (600,000 tons) of pellets in 2008

Diverse Lifestyles and Strategies of Plant Pathogenesis Encoded in the Genomes of Eighteen Dothideomycetes Fungi

Creator:: Ohm, Robin A., Feau, Nicolas, Henrissat, Bernard, Schoch, Conrad L., Horwitz, Benjamin A., Barry, Kerrie W., Condon, Bradford J., Copeland, Alex C., Dhillon, Braham, Glaser, Fabian, Hesse, Cedar N., Kosti, Idit, LaButti, Kurt, Lindquist, Erika A., Lucas, Susan, Salamov, Asaf A., Bradshaw, Rosie E., Ciuffetti, Lynda, Hamelin, Richard C., Kema, Gert H. J., Lawrence, Christopher, Scott, James A., Spatafora, Joseph W., Turgeon, B. Gillian, de Wit, Pierre J. G. M., Zhong, Shaobin, Goodwin, Stephen B., and Grigoriev, Igor V.
Abstract:: Correction 5 Mar 2013: Ohm RA, Feau N, Henrissat B, Schoch CL, Horwitz BA, et al. (2013) Correction: Diverse Lifestyles and Strategies of Plant Pathogenesis Encoded in the Genomes of Eighteen Dothideomycetes Fungi. PLOS Pathogens 9(3): 10.1371/annotation/fcca88ac-d684-46e0-a483-62af67e777bd
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Full Text:: , Agricultural Research Service, Purdue University, West Lafayette, Indiana, United States of America Abstract

Forest Service National Forest System Perceptions of Law Enforcement and Investigations: Nationwide Study

Creator:: Chavez, Deborah J. and Tynon, Joanne F.
Abstract:: This is the fifth in a series of studies to evaluate perceptions of the roles, responsibilities, and issues entailed in the jobs of U.S. Department of Agriculture Forest Service law enforcement and investigations (LEI) personnel. An e-mail survey was administered to the 537 Forest Service forest supervisors and district rangers...
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Full Text:: United States by including an endorsement letter from the Chief of the Forest Service. We administered

An individual-based process model to simulate landscape-scale forest ecosystem dynamics

Creator:: Seidl, Rupert, Rammer, Werner, Scheller, Robert M., and Spies, Thomas A.
Abstract:: Forest ecosystem dynamics emerges from nonlinear interactions between adaptive biotic agents (i.e., individual trees) and their relationship with a spatially and temporally heterogeneous abiotic environment. Understanding and predicting the dynamics resulting from these complex interactions is crucial for the sustainable stewardship of ecosystems, particularly in the context of rapidly changing...
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Full Text:: Science and Management, Portland, OR, United States USDA Forest Service, Pacific Northwest Research

Managing for climate change on federal lands of the western United States: perceived usefulness of climate science, effectiveness of adaptation strategies, and barriers to implementation

Creator:: Kemp, Kerry B., Blades, Jarod J., Klos, P. Zion, Hall, Troy E., Force, Jo Ellen, Morgan, Penelope, and Tinkham, Wade T.
Abstract:: Recent mandates in the United States require federal agencies to incorporate climate change science into land management planning efforts. These mandates target possible adaptation and mitigation strategies. However, the degree to which climate change is actively being considered in agency planning and management decisions is largely unknown. We explored the...
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Full Text:: ; public lands INTRODUCTION In the U.S. northern Rocky Mountain region, the United States Forest Service

Switching Hemispheres: A New Migration Strategy for the Disjunct Argentinean Breeding Population of Barn Swallow (Hirundo rustica)

Creator:: Garcia-Perez, Belen, Hobson, Keith A., Powell, Rebecca L., Still, Christopher J., and Huber, Gernot H.
Abstract:: Background: Barn Swallows (Hirundo rustica) breed almost exclusively in the Northern Hemisphere. However, since the early 1980's, a small disjunct breeding population has become established in eastern Argentina, presumably by birds previously derived from those breeding in North America. Currently, it is unknown where these individuals go following breeding and...
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Full Text:: -Salem, North Carolina, United States of America, 4 Forest Ecosystems and Society of Geography, Oregon

Evidence for xylem embolism as a primary factor in dehydration-induced declines in leaf hydraulic conductance

Creator:: Johnson, Daniel M., McCulloh, Katherine A., Woodruff, David R., and Meinzer, Frederick C.
Abstract:: Hydraulic conductance of leaves (K[subscript leaf]) typically decreases with increasing water stress and recent studies have proposed different mechanisms responsible for decreasing K[subscript leaf]. We measured K[subscript leaf] concurrently with ultrasonic acoustic emissions (UAEs) in dehydrating leaves of several species to determine whether declining K[subscript leaf] was associated with xylem...
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Full Text:: , Duke University, Durham, NC 27708, USA, 2Department of Forest Ecosystems and Society, Oregon State

Choosing Sampling Interval Durations for Remotely Classifying Rocky Mountain Elk Behavior

Creator:: Gaylord, Adam J., Sanchez, Dana M., and Van Sickle, John
Abstract:: Dual-axis accelerometer global positioning system collars can be used to remotely record the activity level and behavior of free-ranging animals, but inter- and intraspecific variations in motion among behaviors necessitate calibration for each species of interest. To date, little work has been done to determine the best duration for sampling...
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Full Text:: regularly fed by U.S. Forest Service staff and are relatively habituated to human presence. Except during

Comparing Ecoregional Classifications for Natural Areas Management in the Klamath Region, USA

Creator:: Sarr, Daniel A., Duff, Andrew, Dinger, Eric C., Shafer, Sarah L., Wing, Michael, Seavy, Nathaniel E., and Alexander, John D.
Abstract:: We compared three existing ecoregional classification schemes (Bailey, Omernik, and World Wildlife Fund) with two derived schemes (Omernik Revised and Climate Zones) to explore their effectiveness in explaining species distributions and to better understand natural resource geography in the Klamath Region, USA. We analyzed presence/absence data derived from digital distribution...
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Full Text:: a number of studies focused in the western United States (Baker 1944; Mitchell 1976; Mock

Response of the nitrogen-fixing lichen Lobaria pulmonaria to phosphorus, molybdenum, and vanadium

Creator:: Marks, Jade A., Pett-Ridge, Julie C., Perakis, Steven S., Allen, Jessica L., and McCune, Bruce
Abstract:: Nitrogen-fixing lichens (cyanolichens) are an important source of nitrogen (N) in Pacific Northwest forests, but limitation of lichen growth by elements essential for N fixation is poorly understood. To investigate how nutrient limitation may affect cyanolichen growth rates, we fertilized a tripartite cyanobacterial lichen (Lobaria pulmonaria) and a green algal...
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Full Text:: agricultural region (USDA Forest Service 2002, Felix et al. 2013, Felix et al. 2014). Faster growth of Lobaria

Water limitations on forest carbon cycling and conifer traits along a steep climatic gradient in the Cascade Mountains, Oregon

Creator:: Berner, L. T. and Law, B. E.
Abstract:: Severe droughts occurred in the western United States during recent decades, and continued human greenhouse gas emissions are expected to exacerbate warming and drying in this region. We investigated the role of water availability in shaping forest carbon cycling and morphological traits in the eastern Cascade Mountains, Oregon, focusing on...
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Water limitations on forest carbon cycling and conifer traits along a steep climatic gradient in the Cascade Mountains, Oregon

Creator:: Berner, L. T. and Law, B. E.
Abstract:: Severe droughts occurred in the western United States during recent decades, and continued human greenhouse gas emissions are expected to exacerbate warming and drying in this region. We investigated the role of water availability in shaping forest carbon cycling and morphological traits in the eastern Cascade Mountains, Oregon, focusing on...
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Historical Biogeography and Diversification of Truffles in the Tuberaceae and Their Newly Identified Southern Hemisphere Sister Lineage

Creator:: Bonito, Gregory, Smith, Matthew E., Nowak, Michael, Healy, Rosanne A., Guevara, Gonzalo, Cazares, Efren, Kinoshita, Akihiko, Nouhra, Eduardo R., Domınguez, Laura S., Tedersoo, Leho, Murat, Claude, Wang, Yun, Arroyo Moreno, Baldomero, Pfister, Donald H., Nara, Kazuhide, Zambonelli, Alessandra, Trappe, James M., and Vilgalys, Rytas
Abstract:: Truffles have evolved from epigeous (aboveground) ancestors in nearly every major lineage of fleshy fungi. Because accelerated rates of morphological evolution accompany the transition to the truffle form, closely related epigeous ancestors remain unknown for most truffle lineages. This is the case for the quintessential truffle genus Tuber, which includes...
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Full Text:: Ecosystems and Society, Oregon State University, Corvallis, Oregon, United States of America, 5 Instituto

Complex network theory, streamflow, and hydrometric monitoring system design

Creator:: Halverson, M. J. and Fleming, S. W.
Abstract:: Network theory is applied to an array of streamflow gauges located in the Coast Mountains of British Columbia (BC) and Yukon, Canada. The goal of the analysis is to assess whether insights from this branch of mathematical graph theory can be meaningfully applied to hydrometric data, and, more specifically, whether...
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Full Text:: United States. The small-world classification does not necessarily specify the degree distribution

Complex networks, streamflow, and hydrometric monitoring system design

Creator:: Halverson, M. J. and Fleming, S. W.
Abstract:: Network theory is applied to an array of streamflow gauges located in the Coast Mountains of British Columbia and Yukon, Canada. The goal of the analysis is to assess whether insights from this branch of mathematical graph theory can be meaningfully applied to hydrometric data, and more specifically, whether it...
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Full Text:: (i.e. the six degrees of separation phenomenon), and the power grid of the western United States. The

In cold blood: evidence of Pacific sleeper shark (Somniosus pacificus) predation on Steller sea lions (Eumetopias jubatus) in the Gulf of Alaska

Creator:: Horning, Markus and Mellish, Jo-Ann E.
Abstract:: Temperature data received post mortem in 2008–13 from 15 of 36 juvenile Steller sea lions (Eumetopias jubatus) that had been surgically implanted in 2005–11 with dual life history transmitters (LHX tags) indicated that all 15 animals died by predation. In 3 of those 15 cases, at least 1 of the...
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Full Text:: State University 2030 SE Marine Science Drive Newport, Oregon 97365 2 Coastal Oregon Marine

Quantification of Habitat and Community Relationships among Nearshore Temperate Fishes Through Analysis of Drop Camera Video

Creator:: Easton, Ryan R., Heppell, Selina S., and Hannah, Robert W.
Abstract:: Temperate nearshore reefs along the Pacific coast of North America are highly valuable to commercial and recreational fisheries yet comprise a small fraction of the seabed. Monitoring fisheries resources in this region is difficult; high-relief structural complexity and adverse sea conditions have led to a paucity of information on temperate...
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Full Text:: Ryan R. Easton* College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, 104 CEOAS

Region-Wide Ecological Responses of Arid Wyoming Big Sagebrush Communities to Fuel Treatments

Creator:: Pyke, David A., Shaff, Scott E., Lindgren, Andrew I., Schupp, Eugene W., Doescher, Paul S., Chambers, Jeanne C., Burnham, Jeffrey S., and Huso, Manuela M.
Abstract:: If arid sagebrush ecosystems lack resilience to disturbances or resistance to annual invasives, then alternative successional states dominated by annual invasives, especially cheatgrass (Bromus tectorum L.), are likely after fuel treatments. We identified six Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis Beetle & Young) locations (152–381 mm precipitation) that we...
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Full Text:: Ecology Center, Utah State University, Logan, UT 84322, USA; 4Professor, Department of Forest Ecosystems

Comparing statistical techniques to classify the structure of mountain forest stands using CHM-derived metrics in Trento province (Italy)

Creator:: Torresan, Chiara L., Strunk, Jacob, Zald, Harold S. J., Zhiqiang, Yang, and Cohen, Warren B.
Abstract:: In some cases a canopy height model (CHM) is the only available source of forest height information. For these cases it is important to understand the predictive power of CHM data for forest attributes. In this study we examined the use of lidar-derived CHM metrics to predict forest structure classes...
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Full Text:: , 2Department of Forest Engineering, Resources and Management, College of Forestry, Oregon State University

Mapping Migratory Bird Prevalence Using Remote Sensing Data Fusion

Creator:: Swatantran, Anu, Dubayah, Ralph, Goetz, Scott, Hofton, Michelle, Betts, Matthew G., Sun, Mindy, Simard, Marc, and Holmes, Richard
Abstract:: Background: Improved maps of species distributions are important for effective management of wildlife under increasing anthropogenic pressures. Recent advances in lidar and radar remote sensing have shown considerable potential for mapping forest structure and habitat characteristics across landscapes. However, their relative efficacies and integrated use in habitat mapping remain largely...
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Full Text:: , Maryland, United States of America, 2 Woods Hole Research Center, Falmouth, Massachusetts, United States of

Estimating heterotrophic respiration at large scales: challenges, approaches, and next steps

Creator:: Bond-Lamberty, Ben, Epron, Daniel, Harden, Jennifer, Harmon, Mark E., Hoffman, Forrest, Kumar, Jitendra, David McGuire, Anthony, and Vargas, Rodrigo
Abstract:: Heterotrophic respiration (HR), the aerobic and anaerobic processes mineralizing organic matter, is a key carbon flux but one impossible to measure at scales significantly larger than small experimental plots. This impedes our ability to understand carbon and nutrient cycles, benchmark models, or reliably upscale point measurements. Given that a new...
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Full Text:: for the region of sub- tropical forests in the southeastern United States is different from those co

Uncertainty analysis: an evaluation metric for synthesis science

Creator:: Harmon, Mark E., Fasth, Becky, Halpern, Charles B., and Lutz, James A.
Abstract:: The methods for conducting reductionist ecological science are well known and widely used. In contrast, those used in the synthesis of ecological science (i.e., synthesis science) are still being developed, vary widely, and often lack the rigor of reductionist approaches. This is unfortunate because the synthesis of ecological parts into...
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Full Text:: . 2003. National-scale biomass estimators for United States tree species. Forest Science 49:12– 35

The plant phenology monitoring design for The National Ecological Observatory Network

Creator:: Elmendorf, Sarah C., Jones, Katherine D., Cook, Benjamin I., Diez, Jeffrey M., Enquist, Carolyn A. F., Hufft, Rebecca A., Jones, Matthew O., Mazer, Susan J., Miller-Rushing, Abraham J., Moore, David J. P., Schwartz, Mark D., and Weltzin, Jake F.
Abstract:: Phenology is an integrative science that comprises the study of recurring biological activities or events. In an era of rapidly changing climate, the relationship between the timing of those events and environmental cues such as temperature, snowmelt, water availability, or day length are of particular interest. This article provides an...
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Full Text:: United States. 2. Observing replicate individuals of select species to quantify intraspecific variation

Linked hydrologic and social systems that support resilience of traditional irrigation communities

Creator:: Fernald, A., Guldan, S., Boykin, K., Cibils, A., Gonzales, M., Hurd, B., Lopez, S., Ochoa, C., Ortiz, M., Rivera, J., Rodriguez, S., and Steele, C.
Abstract:: Southwestern US irrigated landscapes are facing upheaval due to water scarcity and land use conversion associated with climate change, population growth, and changing economics. In the traditionally irrigated valleys of northern New Mexico, these stresses, as well as instances of community longevity in the face of these stresses, are apparent....
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Full Text:: administered by the United States Forest Service were reduced dramatically beginning in the early 1900s (Fig

The status and challenge of global fire modelling

Creator:: Hantson, Stijn, Arneth, Almut, Harrison, Sandy P., Kelley, Douglas I., Prentice, I. Colin, Rabin, Sam S., Archibald, Sally, Mouillot, Florent, Arnold, Steve R., Artaxo, Paulo, Bachelet, Dominique, Ciais, Philippe, Forrest, Matthew, Friedlingstein, Pierre, Hickler, Thomas, Kaplan, Jed O., Kloster, Silvia, Knorr, Wolfgang, Lasslop, Gitta, Li, Fang, Mangeon, Stephane, Melton, Joe R., Meyn, Andrea, Sitch, Stephen, Spessa, Allan, van der Werf, Guido R., Voulgarakis, Apostolos, and Yue, Chao
Abstract:: Biomass burning impacts vegetation dynamics, biogeochemical cycling, atmospheric chemistry, and climate, with sometimes deleterious socio-economic impacts. Under future climate projections it is often expected that the risk of wildfires will increase. Our ability to predict the magnitude and geographic pattern of future fire impacts rests on our ability to model...
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Full Text:: and Ecological Engineering, Oregon State University, Corvallis, OR 97331, USA 12Conservation Biology

A Multi-Year Longitudinal Study of Water Quality Parameters in Four Salmon-Bearing and Recreational Streams on Mount Hood, Oregon

Creator:: Wasowski, Ronald, Alexander, David, Kolmes, Steven, Banet, Nathan, Card, Amy, Haines, Morgan, Kolmes, Elijah, Northcutt, Kelly, Roemer, Derek, and Webber, Sarah
Abstract:: Four streams-Clear Fork, Lost Creek, Camp Creek and Still Creek-in northwestern Oregon's Sandy River Basin were monitored for temperature, dissolved oxygen levels, and fecal bacterial concentrations in a multi-year analysis examining stream health for recreational users and anchor habitat for Pacific Salmon. Temperatures were recorded using micro -T temperature loggers...
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Full Text:: , Portland, Oregon, United States of America, 3 Department of Fisheries and Wildlife, Oregon State

Albacore oceanography off Oregon : 1970

Creator:: Pearcy, William G.
Abstract:: During July 1970, albacore boats trolling surface jigs (jig boats) had record catches in an area off the mouth of the Columbia River. The jig fishery declined suddenly in late July and was poor throughout the remainder of the summer. No obvious oceanographic changes were correlated with these drastic changes...
Resource Type:: Article
Full Text:: , however, the jig fishery virtually disappeared. Boats fishing in the region of the Columbia River, where

Escaped farmed salmon and trout in Chile: incidence, impacts, and the need for an ecosystem view

Creator:: Sepúlveda, Maritza, Arismendi, Ivan, Soto, Doris, Jara, Fernando, and Farias, Francisca
Abstract:: The exponential growth of the salmonid farming industry during the last 3 decades has created conditions for massive escapes of these exotic species into natural environments in southern Chile. Here, we review and update information about salmonid escapes from 1993 to 2012 and examine their potential environmental, social, and economic...
Resource Type:: Article
Full Text:: also been documented in salmon farms in Norway, Canada, 235 Scotland, United States, and recently in

Climate change and forest disturbances

Creator:: Hale, Virginia H., Joyce, Linda A., McNulty, Steve, Neilson, Ronald P., Ayres, Matthew P., Flannigan, Michael D., Hanson, Paul J., Irland, Lloyd C., Lugo, Ariel E., Peterson, Chris J., Simberloff, Daniel, Swanson, Frederick J., Stocks, Brian J., and Wotton, B.Michael
Abstract:: Studies of the effects of climate change on forests have focused on the ability of species to tolerate temperature and moisture changes and to disperse, but they have ignored the effects of disturbances caused by climate change (e.g., Ojima et al. 1991). Yet modeling studies indicate the importance of climate...
Resource Type:: Article
Full Text:: is very difficult; these estimates for the United States are il- lustrative only. Of the eight forest

Sustainable Development and Green Buildings

Creator:: Sinha, Arijit, Gupta, Rakesh, and Kutnar, Andreja
Abstract:: Global sustainability goals have led to the development of the green building movement. The Green Building Program, stemming from the movement, has had unprecedented success as it provides a quantifi able metric to people’s efforts towards sustainable development. Sustainable development and green buildings are often used interchangeably. Although, sustainable development...
Resource Type:: Article
Full Text:: green building rating systems in place. United States Green Building Council administered Leadership in

A new species of Sebastes (Scorpaeniformes: Sebastidae) from the northeastern Pacific, with a redescription of the blue rockfish, S. mystinus (Jordan and Gilbert, 1881)

Creator:: Frable, Benjamin W., Wagman, D. Wolfe, Frierson, Taylor N., Aguilar, Andres, and Sidlauskas, Brian L.
Abstract:: The diverse predatory rockfishes (Sebastes spp.) support extensive commercial fisheries in the northeastern Pacific. Although 106 species of Sebastes are considered valid, many of the ecological, geographical, and morphological boundaries separating them lack clarity. We clarify one such boundary by separating the blue rockfish Sebastes mystinus (Jordan and Gilbert, 1881)...
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Full Text:: 10.7755/FB.113.4.1 United States Department of Commerce, National Oceanic and Atmospheric Administration

The Effects of Forest Fuel-Reduction Treatments in the United States

Creator:: Stephens, Scott L., McIver, James D., Boerner, Ralph E. J., Fettig, Christopher J., Fontaine, Joseph B., Hartsough, Bruce R., Kennedy, Patricia L., and Schwilk, Dylan W.
Abstract:: The current conditions of many seasonally dry forests in the western and southern United States, especially those that once experienced low- to moderate-intensity fire regimes, leave them uncharacteristically susceptible to high-severity wildfire. Both prescribed fire and its mechanical surrogates are generally successful in meeting short-term fuel-reduction objectives such that treated...
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Full Text:: Effects of Forest Fuel-Reduction Treatments in the United States SCOTT L. STEPHENS, JAMES D. MCIVER

Fish-habitat associations on a deep reef at the edge of the Oregon continental shelf

Creator:: Tissot, Brian N., Hixon, Mark Anthony, Barss, William, and Stein, David L.
Abstract:: Heceta Bank is a large reef on the edge of the central Oregon continental shelf that supports a wide variety of commercial fisheries. Using the research submersible Delta, we studied fish abundances on Heceta Bank and the relationship between species composition of fish assemblages and bottom types. Cluster analysis indicated...
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Full Text:: ) into a centra~ Califor- nia kelp forest. M.S. thesis, San Francisco State Univ., 104 p. Ebeling, A.W

Seasonal and interannual variation in juvenile salmonids and associated fish assemblage in open waters of the lower Columbia River estuary

Creator:: Weitkamp, Laurie A., Bentley, Paul J., and Litz, Marisa N. C.
Abstract:: The transition between freshwater and marine environments is associated with high mortality for juvenile anadromous salmonids, yet little is known about this critical period in many large rivers. To address this deficiency, we investigated the estuarine ecology of juvenile salmonids and their associated fish assemblage in open-water habitats of the...
Resource Type:: Article
Full Text:: ) and do not necessarily reflect the position of the National Marine Fisheries Service, NOAA. The

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