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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

Dynamics of leaf water relations components in co-occurring iso- and anisohydric conifer species

Creator:: Meinzer, Frederick C., Woodruff, David R., Marias, Danielle E., McCulloh, Katherine A., and Sevanto, Sanna
Abstract:: Because iso- and anisohydric species differ in stomatal regulation of the rate and magnitude of fluctuations in shoot water potential, they may be expected to show differences in the plasticity of their shoot water relations components, but explicit comparisons of this nature have rarely been made. We subjected excised shoots...
Resource Type:: Article

The dynamic pipeline: hydraulic capacitance and xylem hydraulic safety in four tall conifer species

Creator:: McCulloh, Katherine A., Johnson, Daniel M., Meinzer, Frederick C., and Woodruff, David R.
Abstract:: Recent work has suggested that plants differ in their relative reliance on structural avoidance of embolism versus maintenance of the xylem water column through dynamic traits such as capacitance, but we still know little about how and why species differ along this continuum. It is even less clear how or...
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:: . WOODRUFF 4 , KATHERINE A. MCCULLOH 5 , AND FREDERICK C. MEINZER 4 2

Hydraulic safety margins and embolism reversal in stems and leaves: Why are conifers and angiosperms so different?

Creator:: Johnson, Daniel M., McCulloh, Katherine A., Woodruff, David R., and Meinzer, Frederick C.
Abstract:: Angiosperm and coniferous tree species utilize a continuum of hydraulic strategies. Hydraulic safety margins (defined as differences between naturally occurring xylem pressures and pressures that would cause hydraulic dysfunction, or differences between pressures resulting in loss of hydraulic function in adjacent organs (e.g., stems vs. leaves) tend to be much...
Resource Type:: Article
Full Text:: embolism reversal in stems and leaves: Why are conifers and angiosperms so different? R H c D a b c

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...
Resource Type:: Article
Full Text:: , KATHERINE A. MCCULLOH2, DAVID R. WOODRUFF3 & FREDERICK C. MEINZER3 1Nicholas School of the Environment

The blind men and the elephant: The impact of context and scale in evaluating conflicts between plant hydraulic safety and efficiency

Creator:: Meinzer, Frederick C., McCulloh, Katherine A., Lachenbruch, Barbara, Woodruff, David R., and Johnson, Daniel M.
Abstract:: Given the fundamental importance of xylem safety and efficiency for plant survival and fitness, it is not surprising that these are among the most commonly studied features of hydraulic architecture. However, much remains to be learned about the nature and universality of conflicts between hydraulic safety and efficiency. Although selection...
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:: by Oxford University Press. This work is written by a US Government employee(s) and is in the public

Comparative hydraulic architecture of tropical tree species representing a range of successional stages and wood density

Creator:: McCulloh, Katherine A., Meinzer, Frederick C., Sperry, John S., Lachenbruch, Barbara, Voelker, Steven L., Woodruff, David R., and Domec, Jean-Christophe
Abstract:: Plant hydraulic architecture (PHA) has been linked to water transport sufficiency, photosynthetic rates, growth form and attendant carbon allocation. Despite its influence on traits central to conferring an overall competitive advantage in a given environment, few studies have examined whether key aspects of PHA are indicative of successional stage, especially...
Resource Type:: Article

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

ScholarsArchive@OSU

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

Dynamics of leaf water relations components in co-occurring iso- and anisohydric conifer species

The dynamic pipeline: hydraulic capacitance and xylem hydraulic safety in four tall conifer species

Contrasting Hydraulic Strategies in Two Tropical Lianas and Their Host Trees

Hydraulic safety margins and embolism reversal in stems and leaves: Why are conifers and angiosperms so different?

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

The blind men and the elephant: The impact of context and scale in evaluating conflicts between plant hydraulic safety and efficiency

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

Comparative hydraulic architecture of tropical tree species representing a range of successional stages and wood density

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

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