A high-resolution numerical model with idealized topography is used to investigate the degree to which a coastal upwelling jet separates from the shelf as it flows around a submarine bank depending on the wind strength and the horizontal scale of the bank. Experiments were run using several wind forcing magnitudes...
The purpose of this paper is to understand how long planetary waves evolve when propagating in a subtropical gyre. The steady flow of a wind-driven vertically sheared model subtropical gyre is perturbed by Ekman pumping that is localized within a region of finite lateral extent and oscillates periodically at about...
4-H advancement programs consist of a series of steps that provide a framework for progressive learning within a specific project area. Advancement programs encourage 4-H members to learn at their own speed based on their interests and abilities. Advancement programs are self-paced, and age- and skill-level appropriate. Advancement programs can...
Oregon State University Extension Service is pleased to share with you a tremendous teaching resource for 4th and 5th grade classes. This unique curriculum, “The Incredible Egg,” integrates the concepts of chick embryology into easy‑to-use math, science, and language arts lesson plans.
In addition, lessons for this curriculum have been...
Many buyers of processed vegetables are responding to consumer concerns by demanding that producers have an effective environmental stewardship program and reduce pesticide use. Snap bean producers have an opportunity to meet
these demands. The snap bean and 12 spot beetle interaction is relatively simple. Methods for determining risk of...
The Persian, or English, walnuts (Juglans regia) grown commercially in Oregon evolved in the mountainous regions of central Asia. California is a world
leader in walnut production and produces 99 percent of the United States walnut crop. This publication is designed for those who grow walnuts commercially in Oregon, as...
Field-grown red maple (Acerrubrum) trees often develop foliar chlorosis during mid- to late summer. Initially, the condition appears as mild interveinal chlorosis in newly developing foliage. As symptoms intensify, entire leaves turn chlorotic. Under severe conditions, interveinal necrosis occurs. Chlorotic plants often have reduced height and caliper. The chlorosis is...
There are approximately 6.14 million sheep in the United States (NASS 2005); however, only approximately 11,000 are dairy ewes (Thomas 2004). In 2003, the estimated U.S. sheep milk production was 1.2–1.8 million kg, most of which was used for cheese production (Thomas 2004). Cow and goat milk cheeses
have been...
Home gardens produce the best yields when planted with vegetable varieties adapted to local growing conditions. These variety trials may assist market growers and home gardeners in choosing adapted varieties,
based on qualities that are important to them (such as appearance,
earliness, flavor, yield, and disease resistance).
THE ROLE OF THE OCEANS in Earth systems ecology, and the effects of climate variability on the ocean and its ecosystems, can be understood only by observing, describing, and ultimately predicting the state of the ocean as a physically forced ecological and biogeochemical system. This is a daunting but exciting...