The physiological adaptations involved in the seasonal and altitudinal regulation of the life cycle in Allonemobius fasciatus were
studied.
This species maintains a univoltine life cycle with an embryonic
diapause over an altitudinal gradient of as large as 1,000 m. A more
than 1.5 -month difference exists in hatching time...
Seasonal habitat availability, utilization, and selection by young
of the year (< 25 mm) and adult (>25 mm) redside shiner, Richardsonius
balteatus, were studied for 1 year in sections of Greasy Creek, Benton
County, Oregon. Intensive stream mapping procedures and snorkling
observations provided most of the quantitative measures for habitat...
The purpose of this study is to investigate the
attitudes toward mathematics of prospective elementary
teachers and their basic understanding of mathematics.
Two hundred fourteen subjects, representing prospective teachers from Oregon State University and Western
Oregon State College participated in this study. The
responses of this total population to the...
Altitudinal variations in upland regions of the earth create
variable climatic zones and conditions. Plant and animal
communities must adapt to these conditions, and when they reach
their tolerance limits for environmental conditions at the upper
levels of a zone, they cease to exist in the environment. Humans
also utilize...
The shallow water benthic habitat of the SW Beaufort Sea is frequently
gouged by the keels of ice pressure ridges. This natural physical
disturbance was hypothesized to be an important factor affecting the
structure of the benthic community. Smith-McIntyre grab samples were
taken from three discrete gouge axes and from...
Products as diverse as soda-pop, fashion and
automobiles are selling to the tunes of classic and current
pop and rock music. The combination of MTV (Music
Television), the latest audio-visual technology, and the
replacement of movie stars by rock stars as the idols of
contemporary youth (Beckett, 1985; Hartman, 1987),...