Index Catalog // ScholarsArchive@OSU

Objective Determination of Feature Resolution in Two Sea Surface Temperature Analyses

Creator:: Reynolds, Richard W., Chelton, Dudley B., Roberts-Jones, Jonah, Martin, Matthew J., Menemenlis, Dimitris, and Merchant, Christopher John
Abstract:: Considerable effort is presently being devoted to producing high-resolution sea surface temperature (SST) analyses with a goal of spatial grid resolutions as low as 1 km. Because grid resolution is not the same as feature resolution, a method is needed to objectively determine the resolution capability and accuracy of SST...
Resource Type:: Article
Full Text:: Laboratory, California Institute of Technology, Pasadena, California CHRISTOPHER JOHN MERCHANT University

Invasiveness of plant pathogens depends on the spatial scale of host distribution

Creator:: Mikaberidze, Alexey, Mundt, Christopher C., and Bonhoeffer, Sebastian
Abstract:: Plant diseases often cause serious yield losses in agriculture. A pathogen’s invasiveness can be quantified by the basic reproductive number, R₀. Since pathogen transmission between host plants depends on the spatial separation between them, R₀ is strongly influenced by the spatial scale of the host distribution.We present a proof of...
Resource Type:: Article

Intra‐populational variation of ejaculate traits and sperm depletion in red‐sided garter snakes

Creator:: Friesen, Christopher R., Squire, Mattie K., and Mason, Robert T.
Abstract:: Female sexual promiscuity is a prevalent element of mating systems. One consequence of female sexual promiscuity is that male‐male competition often continues post‐copulation within the female’s reproductive tract. According to theory, the number of sperm a male inseminates relative to his rivals strongly predicts his fertilization success. However, sperm quality...
Resource Type:: Article
Full Text:: depletion in red-sided garter snakes Friesen, Christopher R., Squire, M. K., & Mason, R. T. (2014

The GIS Professional Ethics Project: Practical Ethics Education for GIS Professionals

Creator:: DiBiase, David, Harvey, Francis, Goranson, Christopher, and Wright, Dawn
Abstract:: Teaching GIS involves teaching ethical and moral thinking as a distinct engagement with the use, applications, and responsibilities of GIS professionals. Over the past 20 years scholars (particularly those affiliated with the discipline of Geography) have contributed critiques of the instrumental nature of GIS as well as reflective case studies...
Resource Type:: Part of Book
Full Text:: DiBiase John A. Dutton e-Education Institute The Pennsylvania State University University Park PA 16802

Females remate more frequently when mated with sperm-deficient males

Creator:: Friesen, Christopher R., Uhrig, Emily J., and Mason, Robert T.
Abstract:: Polyandry is a source of sexual conflict and males often try to limit female promiscuity. Consequently, male manipulation of receptivity via antiaphrodisiacs and copulatory plugs that prevent female remating can be a source of sexual conflict. This sexual conflict may be intensified when females must remate for fertility insurance. Male...
Resource Type:: Article
Full Text:: :10.1002/jez.1892 10.1002/jez.1892 John Wiley & Sons, Inc. Accepted Manuscript http

Populations of aspen (Populus tremuloides Michx.) with different evolutionary histories differ in their climate occupancy

Creator:: Greer, Burke T., Still, Christopher, Howe, Glenn T., Tague, Christina, and Roberts, Dar A.
Abstract:: Quaking aspens (Populus tremuloides Michx.) are found in diverse habitats throughout North America. While the biogeography of aspens' distribution has been documented, the drivers of the phenotypic diversity of aspen are still being explored. In our study, we examined differences in climate between northern and southwestern populations of aspen, finding...
Resource Type:: Article

A climate of uncertainty: accounting for error in climate variables for species distribution models

Creator:: Stoklosa, Jakub, Daly, Christopher, Foster, Scott D., Ashcroft, Michael B., and Warton, David I.
Abstract:: 1. Spatial climate variables are routinely used in species distribution models (SDMs) without accounting for the fact that they have been predicted with uncertainty, which can lead to biased estimates, erroneous inference and poor performances when predicting to new settings – for example under climate change scenarios. 2. We show...
Resource Type:: Article

Threshold levels of generalist predation determine consumer response to resource pulses

Creator:: Levi, Taal, Kilpatrick, A. Marm, Barfield, Michael, Holt, Robert D., Mangel, Marc, and Wilmers, Christopher C.
Abstract:: Many ecological systems are characterized by brief periods of increased resource availability called resource pulses. Empirical studies suggest that some populations of primary consumers grow rapidly in response to resource pulses, but others instead remain at low abundance despite increases in resource availability. Previous theory suggests that the lack of...
Resource Type:: Article
Full Text:: Christopher C. Wilmers T. Levi (taal.levi@oregonstate.edu), Dept of Fisheries and Wildlife, Oregon State

Rationally engineered flavin-dependent oxidase reveals steric control of dioxygen reduction

Creator:: Zafred, Domen, Steiner, Barbara, Teufelberger, Andrea R., Hromic, Altijana, Karplus, P. Andrew, Schofield, Christopher J., Wallner, Silvia, and Macheroux, Peter
Abstract:: The ability of flavoenzymes to reduce dioxygen varies greatly and is controlled by the protein environment that can cause either a rapid (oxidases) or sluggish (dehydrogenases) reaction. Previously, a “gatekeeper” amino acid residue was identified that controls the reactivity to dioxygen in proteins from the vanillyl alcohol oxidase superfamily of...
Resource Type:: Article
Full Text:: Karplus,3 Christopher J. Schofield,4 Silvia Wallner1 and Peter Macheroux1 1 Institute of

Biogeographically distinct controls on C₃ and C₄ grass distributions: merging community and physiological ecology

Creator:: Griffith, Daniel M., Anderson, T. Michael, Osborne, Colin P., Strömberg, Caroline A. E., Forrestel, Elisabeth J., and Still, Christopher J.
Abstract:: AIM: C₄ photosynthesis is an adaptation that maintains efficient carbon assimilation in warm and low-CO₂ conditions. Due to the importance of C₄ grasses for carbon and surface energy fluxes numerous models have been proposed to describe their spatial distribution and forecast responses to climate change. These models often rely on...
Resource Type:: Article
Full Text:: .12265 John Wiley & Sons Ltd. Accepted Manuscript http://cdss.library.oregonstate.edu/sa-termsofuse

ScholarsArchive@OSU

Objective Determination of Feature Resolution in Two Sea Surface Temperature Analyses

Invasiveness of plant pathogens depends on the spatial scale of host distribution

Intra‐populational variation of ejaculate traits and sperm depletion in red‐sided garter snakes

The GIS Professional Ethics Project: Practical Ethics Education for GIS Professionals

Females remate more frequently when mated with sperm-deficient males

Populations of aspen (Populus tremuloides Michx.) with different evolutionary histories differ in their climate occupancy

A climate of uncertainty: accounting for error in climate variables for species distribution models

Threshold levels of generalist predation determine consumer response to resource pulses

Rationally engineered flavin-dependent oxidase reveals steric control of dioxygen reduction

Biogeographically distinct controls on C₃ and C₄ grass distributions: merging community and physiological ecology

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