Index Catalog // ScholarsArchive@OSU

Simulating Current Successional Trajectories in Sagebrush Ecosystems With Multiple Disturbances Using a State-and-Transition Modeling Framework

Creator:: Evers, Louisa B., Miller, Richard F., Doescher, Paul S., Hemstrom, Miles, and Neilson, Ronald P.
Abstract:: Disturbances and their interactions play major roles in sagebrush (Artemisia spp. L.) community dynamics. Although impacts of some disturbances, most notably fire, have been quantified at the landscape level, some have been ignored and rarely are interactions between disturbances evaluated. We developed conceptual state-and-transition models for each of two broad...
Resource Type:: Article
Full Text:: Modeling Framework Author(s): Louisa B. Evers , Richard F. Miller , Paul S. Doescher , Miles Hemstrom , and

Global vegetation monitoring: towards a sustainable technobiosphere

Creator:: Turner, David P.
Abstract:: The concept of sustainable resource management can be applied at multiple scales. Monitoring is an essential component of sustainable natural resource management schemes, and as we begin to confront the need to manage natural resources at the global scale, the importance of monitoring at the global scale is also growing....
Resource Type:: Article
Full Text:: - action between the biosphere and the tech- nosphere is the global carbon (C) cycle. Anthropogenic

Seasonal carbohydrate dynamics and growth in Douglas-fir trees experiencing chronic, fungal-mediated reduction in functional leaf area

Creator:: Saffell, Brandy J., Meinzer, Frederick C., Woodruff, David R., Shaw, David C., Voelker, Steven L., Lachenbruch, Barbara, and Falk, Kristen
Abstract:: Stored non-structural carbohydrates (NSCs) could play an important role in tree survival in the face of a changing climate and associated stress-related mortality. We explored the effects of the stomata-blocking and defoliating fungal disease called Swiss needle cast on Douglas-fir carbohydrate reserves and growth to evaluate the extent to which...
Resource Type:: Article

Above- and belowground controls on water use by trees of different wood types in an eastern US deciduous forest

Creator:: Meinzer, Frederick C., Woodruff, David R., Eissenstat, David M., Lin, Henry S., Adams, Thomas S., and McCulloh, Katherine A.
Abstract:: Stomata control tree transpiration by sensing and integrating environmental signals originating in the atmosphere and soil, and co-occurring species may differ in inherent stomatal sensitivity to these above- and belowground signals and in the types of signals to which they respond. Stomatal responsiveness to environmental signals is likely to differ...
Resource Type:: Article
Full Text:: controls on water use by trees of different wood types in an eastern US deciduous forest Frederick C

Climate-related trends in sapwood biophysical properties in two conifers: avoidance of hydraulic dysfunction through coordinated adjustments in xylem efficiency, safety, and capacitance.

Creator:: Barnard, David M., Meinzer, Frederick C., Lachenbruch, Barbara, McCulloh, Katherine A., Johnson, Daniel M., and Woodruff, David R.
Abstract:: In the Pacific north-west, the Cascade Mountain Range blocks much of the precipitation and maritime influence of the Pacific Ocean, resulting in distinct climates east and west of the mountains. The current study aimed to investigate relationships between water storage and transport properties in populations of Douglas-fir (Pseudotsuga menziesii) and...
Resource Type:: Article

Expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates

Creator:: Kerr, Kelly L., Meinzer, Frederick C., McCulloh, Katherine A., Woodruff, David R., and Marias, Danielle E.
Abstract:: First-year tree seedlings represent a particularly vulnerable life stage and successful seedling establishment is crucial for forest regeneration. We investigated the extent to which Pinus ponderosa P. & C. Lawson populations from different climate zones exhibit differential expression of functional traits that may facilitate their establishment. Seeds from two populations...
Resource Type:: Article

Contrasting Hydraulic Strategies in Two Tropical Lianas and Their Host Trees

Creator:: Johnson, Daniel M., Domec, Jean-Christophe, Woodruff, David R., McCulloh, Katherine A., and Meinzer, Frederick C.
Abstract:: • Premise of the Study: Tropical liana abundance has been increasing over the past 40 yr, which has been associated with reduced rainfall. The proposed mechanism allowing lianas to thrive in dry conditions is deeper root systems than co-occurring trees, although we know very little about the fundamental hydraulic physiology...
Resource Type:: Article
Full Text:: TREES 1 DANIEL M. JOHNSON 2,6 , JEAN-CHRISTOPHE DOMEC 2,3 , DAVID R

Do Ray Cells Provide a Pathway for Radial Water Movement in the Stems of Conifer Trees?

Creator:: Barnard, David M., Lachenbruch, Barbara, McCulloh, Katherine A., Kitin, Peter, and Meinzer, Frederick C.
Abstract:: • Premise of the study: The pathway of radial water movement in tree stems presents an unknown with respect to whole-tree hydraulics. Radial profi les have shown substantial axial sap fl ow in deeper layers of sapwood (that may lack direct connection to transpiring leaves), which suggests the existence of...
Resource Type:: Article
Full Text:: , Forest Service Pacifi c Northwest Research Station. 5 Author for correspondence (e-mail

An interdisciplinary framework for evaluating 19th century landscape paintings for ecological research

Creator:: Warren, Dana R., Loeb, Harper M., Betjemann, Peter, Munck, Isabel A., Keeton, William S., Shaw, David C., and Harvey, Eleanor J.
Abstract:: As we contemplate the future of forest landscapes under changing climate conditions and land-use demands, there is increasing value in studying historic forest conditions and how these landscapes have changed following past disturbances. Historic landscape paintings are a potential source of data on preindustrial forests with highly detailed, full-color depictions...
Resource Type:: Article
Full Text:: | Harper M. Loeb1 | Peter Betjemann2 | Isabel A. Munck3 | William S. Keeton4 | David C. Shaw5 | Eleanor J

Nitrogen limitation, ¹⁵N tracer retention, and growth response in intact and Bromus tectorum-invaded Artemisia tridentata ssp. wyomingensis communities

Creator:: Witwicki, Dana L., Doescher, Paul S., Pyke, David A., DeCrappeo, Nicole M., and Perakis, Steven S.
Abstract:: Annual grass invasion into shrub-dominated ecosystems is associated with changes in nutrient cycling that may alter nitrogen (N) limitation and retention. Carbon (C) applications that reduce plant-available N have been suggested to give native perennial vegetation a competitive advantage over exotic annual grasses, but plant community and N retention responses...
Resource Type:: Article
Full Text:: tridentata ssp. wyomingensis communities Dana L. Witwicki • Paul S. Doescher • David A. Pyke • Nicole M

ScholarsArchive@OSU

Simulating Current Successional Trajectories in Sagebrush Ecosystems With Multiple Disturbances Using a State-and-Transition Modeling Framework

Global vegetation monitoring: towards a sustainable technobiosphere

Seasonal carbohydrate dynamics and growth in Douglas-fir trees experiencing chronic, fungal-mediated reduction in functional leaf area

Above- and belowground controls on water use by trees of different wood types in an eastern US deciduous forest

Climate-related trends in sapwood biophysical properties in two conifers: avoidance of hydraulic dysfunction through coordinated adjustments in xylem efficiency, safety, and capacitance.

Expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates

Contrasting Hydraulic Strategies in Two Tropical Lianas and Their Host Trees

Do Ray Cells Provide a Pathway for Radial Water Movement in the Stems of Conifer Trees?

An interdisciplinary framework for evaluating 19th century landscape paintings for ecological research

Nitrogen limitation, ¹⁵N tracer retention, and growth response in intact and Bromus tectorum-invaded Artemisia tridentata ssp. wyomingensis communities

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