Index Catalog // ScholarsArchive@OSU

Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon

Creator:: Tappeiner, John C., Huffman, David W. (William), 1962-, Marshall, David, Spies, Thomas A., and Bailey, John D.
Abstract:: We studied the ages and diameter growth rates of trees in former Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) old-growth stands on 10 sites and compared them with young-growth stands (50-70 years old, regenerated after timber harvest) in the Coast Range of western Oregon. The diameters and diameter growth rates for the...
Resource Type:: Article
Full Text:: . Bailey Abstract: We studied the ages and diameter growth rates of trees in former Douglas-fir

Examining fire-prone forest landscapes as coupled human and natural systems

Creator:: Spies, Thomas A., White, Eric M., Kline, Jeffrey D., Fischer, A. Paige, Ager, Alan, Bailey, John, Bolte, John, Koch, Jennifer, Platt, Emily, Olsen, Christine S., Jacobs, Derric, Shindler, Bruce, Steen-Adams, Michelle M., and Hammer, Roger
Abstract:: Fire-prone landscapes are not well studied as coupled human and natural systems (CHANS) and present many challenges for understanding and promoting adaptive behaviors and institutions. Here, we explore how heterogeneity, feedbacks, and external drivers in this type of natural hazard system can lead to complexity and can limit the development...
Resource Type:: Article
Full Text:: natural systems Spies, T. A., White, E. M., Kline, J. D., Fischer, A. P., Ager, A., Bailey, J

Wildfire risk as a socioecological pathology

Creator:: Fischer, A. Paige, Spies, Thomas A., Steelman, Toddi A., Moseley, Cassandra, Johnson, Bart R., Bailey, John D., Ager, Alan A., Bourgeron, Patrick, Charnley, Susan, Collins, Brandon M., Kline, Jeffrey D., Leahy, Jessica E., Littell, Jeremy S., Millington, James D. A., Nielsen-Pincus, Max, Olsen, Christine S., Paveglio, Travis B., Roos, Christopher I., Steen-Adams, Michelle M., Stevens, Forrest R., Vukomanovic, Jelena., White, Eric M., and Bowman, David M. J. S.
Abstract:: Wildfire risk in temperate forests has become a nearly intractable problem that can be characterized as a socioecological “pathology”: that is, a set of complex and problematic interactions among social and ecological systems across multiple spatial and temporal scales. Assessments of wildfire risk could benefit from recognizing and accounting for...
Resource Type:: Article
Full Text:: Bailey5, Alan A Ager6, Patrick Bourgeron7, Susan Charnley8, Brandon M Collins9, Jeffrey D Kline2, Jessica

Impacts of the Northwest Forest Plan on forest composition and bird populations

Creator:: Phalan, Benjamin T., Northrup, Joseph M., Yang, Zhiqiang, Deal, Robert L., Rousseau, Josee S., Spies, Thomas A., and Betts, Matthew G.
Abstract:: The Northwest Forest Plan (NWFP) initiated one of the most sweeping changes to forest management in the world, affecting 10 million hectares of federal land. The NWFP is a science-based plan incorporating monitoring and adaptive management and provides a unique opportunity to evaluate the influence of policy. We used >25...
Resource Type:: Article
Full Text:: *, Joseph M. Northrup1,3, Zhiqiang Yang4, Robert L. Deal5, Josée S. Rousseau1, Thomas A. Spies6, Matthew G

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

Creator:: Hessburg, Paul F., Spies, Thomas A., Perry, David A., Skinner, Carl N., Taylor, Alan H., Brown, Peter M., Stephens, Scott L., Larson, Andrew J., Churchill, Derek J., Povak, Nicholas A., Singleton, Peter H., McComb, Brenda, Zielinski, William J., Collins, Brandon M., Salter, R. Brion, Keane, John J., Franklin, Jerry F., and Riegel, Greg
Abstract:: Increasingly, objectives for forests with moderate- or mixed-severity fire regimes are to restore successionally diverse landscapes that are resistant and resilient to current and future stressors. Maintaining native species and characteristic processes requires this successional diversity, but methods to achieve it are poorly explained in the literature. In the Inland...
Resource Type:: Article
Full Text:: . Taylor e, Peter M. Brown f, Scott L. Stephens g, Andrew J. Larson h, Derek J. Churchill i, Nicholas A

Disturbance, tree mortality, and implications for contemporary regional forest change in the Pacific Northwest

Creator:: Reilly, Matthew J. and Spies, Thomas A.
Abstract:: Tree mortality is an important demographic process and primary driver of forest dynamics, yet there are relatively few plot-based studies that explicitly quantify mortality and compare the relative contribution of endogenous and exogenous disturbances at regional scales. We used repeated observations on 289,390 trees in 3673 1 ha plots on...
Resource Type:: Article
Full Text:: center and the other four sets of subplot centers located 40.8 m away in each of the four cardinal

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...
Resource Type:: Article
Full Text:: development in forests of Oregon, Washington, and inland Northern California Reilly, M. J., & Spies, T. A

Mixed-conifer forests of central Oregon: effects of logging and fire exclusion vary with environment

Creator:: Merschel, Andrew G., Spies, Thomas A., and Heyerdahl, Emily K.
Abstract:: Twentieth-century land management has altered the structure and composition of mixed-conifer forests and decreased their resilience to fire, drought, and insects in many parts of the Interior West. These forests occur across a wide range of environmental settings and historical disturbance regimes, so their response to land management is likely...
Resource Type:: Article
Full Text:: [GNN] Map; Ohmann and Gregory 2002; available online).5 We excluded areas near roads (,55 m) or the

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...
Resource Type:: Article
Full Text:: Cascade Range. Elevation ranges from 316 to 1,753 m and most major ridges are higher than 1,200 m. The

ScholarsArchive@OSU

Density, ages, and growth rates in old-growth and young-growth forests in coastal Oregon

Examining fire-prone forest landscapes as coupled human and natural systems

Wildfire risk as a socioecological pathology

Impacts of the Northwest Forest Plan on forest composition and bird populations

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

Disturbance, tree mortality, and implications for contemporary regional forest change in the Pacific Northwest

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

Mixed-conifer forests of central Oregon: effects of logging and fire exclusion vary with environment

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

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