Index Catalog // ScholarsArchive@OSU

Constraints to urban park visitation : Conceptual connections and spatial attributes for traditionally well-served and underserved residents

Creator:: Rushing, Jaclyn R.
Abstract:: Connecting with nature is associated with social, physical, and emotional benefits such as stress relief, improved physical health, and lower crime. Parks and other natural areas offer spaces in which to connect with nature and reap these and other benefits (e.g., family bonding, social events, learning). Despite increasing populations of...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________ Mark D. Needham

The effects of mechanical damage on residual coastal Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco) following commercial thinning

Creator:: Kiser, James D.
Abstract:: Commercial thinning operations can result in damage to residual stems. A literature review revealed that little was known about the effects of residual logging wounds with regard to rotation-age commercial conifers, particularly Douglas-fir. An experiment to examine fungal colonization of Douglas-fir following logging damage showed that while damage was significant...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF James D. Kiser for the degree of Doctor of Philosophy in

Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests

Creator:: Hynicka, Justin D.
Abstract:: Ecosystem nitrogen (N) supply strongly influences the availability and cycling of other essential nutrients in temperate forests, especially calcium (Ca). Short-term additions of N that exceed ecosystem demands often increase dissolved nitrate fluxes and decrease soil pH, which can stimulate soil Ca loss. However, the long-term effects of high N...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Justin D

Experiments and Observations on How Changes in Riparian Forests Affect Light and Stream Ecosystems

Creator:: Swartz, Allison G.
Abstract:: Riparian zones are ecotones between terrestrial and aquatic ecosystems. Processes in streams are strongly influenced by riparian forest communities, age, stage and structure. Temperate forests across much of North America, including riparian areas, are recovering from historic land clearing with many stands in the stem-exclusion phase of development in which...
Resource Type:: Dissertation
Full Text:: HJ Andrews Experimental Forest), and the White Mountains in New Hampshire (at the Hubbard Brook

Use of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies

Creator:: Barr, A. G., Richardson, A. D., Hollinger, D. Y., Papale, D., Arain, M. A., Black, T. A., Bohrer, G., Dragoni, D., Fischer, M. L., Gu, L., Law, B. E., Margolis, H. A., McCaughey, J. H., Munger, J. W., Oechel, W., and Schaeffer, K.
Abstract:: The eddy-covariance method often underestimates fluxes under stable, low-wind conditions at night when turbulence is not well developed. The most common approach to resolve the problem of nighttime flux underestimation is to identify and remove the deficit periods using friction-velocity (u*) threshold filters (u*[superscript Th]). This study modifies an accepted...
Resource Type:: Article
Full Text:: A D W a b c d e f g h i j k l m n o p a A R R A K E F U C , 0 h Agricultural

Trends in stream nitrogen concentrations for forested reference catchments across the USA

Creator:: Argerich, A., Johnson, S. L., Sebestyen, S. D., Rhoades, C. C., Greathouse, E., Knoepp, J. D., Adams, M. B., Likens, G. E., Campbell, J. L., McDowell, W. H., Scatena, F. N., and Ice, G. G.
Abstract:: To examine whether stream nitrogen concentrations in forested reference catchments have changed over time and if patterns were consistent across the USA, we synthesized up to 44 yr of data collected from 22 catchments at seven USDA Forest Service Experimental Forests. Trends in stream nitrogen presented high spatial variability both...
Resource Type:: Article
Full Text:: ). Most of the ammonium values were below detection at Fernow and Hubbard Brook (figure 1(d)). Catchments

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

Creator:: Frey, Sarah J. K.
Abstract:: Population trends and patterns in species distributions are the major currencies used to examine responses by biodiversity to changing environments. Effective conservation recommendations require that models of both distribution dynamics and population trends accurately reflect reality. However, identification of the appropriate temporal and spatial scales of animal response, and then...
Resource Type:: Dissertation
Full Text:: for 38 species at the Hubbard Brook Experimental Forest (HBEF) in the White Mountains of New

On the temporal upscaling of evapotranspiration from instantaneous remote sensing measurements to 8-day mean daily-sums

Creator:: Ryu, Youngryel, Baldocchi, Dennis D., Black, T. Andrew, Detto, Matteo, Law, Beverly E., Leuning, Ray, Miyata, Akira, Reichstein, Markus, Vargas, Rodrigo, Ammann, Christof, Beringer, Jason, Flanagan, Lawrence B., Gu, Lianhong, Hutley, Lindsay B., Kim, Joon, McCaughey, Harry, Moors, Eddy J., Rambal, Serge, and Vesala, Timo
Abstract:: The regular monitoring of evapotranspiration from satellites has been limited because of discontinuous temporal coverage, resulting in snapshots at a particular point in space and time. We developed a temporal upscaling scheme using satellite-derived instantaneous estimates of evapotranspiration to produce a daily-sum evapotranspiration averaged over an 8-day interval. We tested...
Resource Type:: Article
Full Text:: mean daily-sums O s Y R L , a b c d e f g h i j k l m n o p q r s a A R R A K

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:: atmospheric vapor pressure deficit (D). The relative sensitivity of sap flux to soil drying was ~2.2–2.3

Linking stomatal sensitivity and whole-tree hydraulic architecture

Creator:: McCulloh, Katherine A. and Woodruff, David R.
Abstract:: None
Resource Type:: Article
Full Text:: deficit (D) relative to a reference conductance at D = 1 kPa (gs-ref). Species with lower sensi- tivity

ScholarsArchive@OSU

Constraints to urban park visitation : Conceptual connections and spatial attributes for traditionally well-served and underserved residents

The effects of mechanical damage on residual coastal Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco) following commercial thinning

Interactions between ecosystem nitrogen and bedrock control long-term calcium sources in Oregon Coast Range forests

Experiments and Observations on How Changes in Riparian Forests Affect Light and Stream Ecosystems

Use of change-point detection for friction–velocity threshold evaluation in eddy-covariance studies

Trends in stream nitrogen concentrations for forested reference catchments across the USA

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

On the temporal upscaling of evapotranspiration from instantaneous remote sensing measurements to 8-day mean daily-sums

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

Linking stomatal sensitivity and whole-tree hydraulic architecture

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