It’s that time of year when many of you are out and about scouting for the earliest signs of powdery mildew and implementing your vineyard spray programs throughout the state. Here’s a quick status update for powdery mildew forecasting and management.
The decrease in mountain snowpack associated with global warming is difficult to estimate in the presence of the large year-to-year natural variability in observations of snow-water equivalent (SWE). A more robust approach for inferring the impacts of global warming is to estimate the temperature sensitivity (λ) of spring snowpack and...
The roles of nocturnal light and lunar phase in the diel migration of micronekton from a nearshore scattering layer were examined. Migration patterns were measured over six complete lunar cycles using moored upwardlooking echosounders while nocturnal surface irradiance was recorded. We hypothesized that animals would remain at a constant isolume...
The nature of the teleconnection linking ENSO variability with Atlantic basin tropical storm formation is investigated. Solutions of the linearized barotropic vorticity equation forced with August–October El Niño event divergence produce upper-tropospheric vorticity anomalies over the Sahel and at the mouth of the North African–Asian (NAA) jet over the tropical...
The advent of high-throughput sequencing (HTS) methods has enabled direct approaches to quantitatively profile small RNA
populations. However, these methods have been limited by several factors, including representational artifacts and lack of
established statistical methods of analysis. Furthermore, massive HTS data sets present new problems related to data processing
and...
The dependence of mixing efficiency on time-varying forcing is studied by direct numerical simulation
(DNS) of Kelvin–Helmholtz (KH) instability. Time-dependent forcing fields are designed to reproduce a
wavelike oscillation by solving the equations of motion in a tilted coordinate frame and allowing the tilt angle
to vary in time. Mixing...
Oregon’s two marine laboratory libraries (located at OSU’s Hatfield Marine Science Center in Newport and UO’s Oregon Institute of Marine Biology in Charleston) have collaborated for 17 years on collection development. We share the same research environments– the Northeast Pacific Ocean and the Oregon coast. While our researchers and students...
A reduced-gravity model is presented of the warm-water branch of the middepth meridional overturning circulation in a rectangular basin with a circumpolar connection. The model describes the balance between production of warm water by Ekman advection across the circumpolar current, dissipation of warm water by eddy fluxes southward across the...
After hatchery-reared salmonids are released into the wild, their survival and performance are
frequently lower than those of wild conspecifics. Additionally, negative effects of hatchery fish on wild fish are cited as factors affecting the recovery of salmonid populations. Alternative hatchery rearing environments and release practices have been proposed to...