For the past ten years, Douglas-fir on the Oregon and Washington coast has shown a progressive decrease in height and diameter increment as a result of Swiss needle cast, which is caused by Phaeocryptopus gaeumannii. In this contribution, we discuss the effects of silvicultural operations on Swiss needle cast and...
High resolution, continuous records of GRAPE wet bulk density (a carbonate proxy) from Ocean Drilling Program Leg 138
provide one the opportunity for a detailed study of eastern equatorial Pacific Ocean carbonate sedimentation during the last 6 m.y.
The transect of sites drilled spans both latitude and longitude in the...
Cover-projection models were developed based on algebraic difference formulations of an exponential-power function to describe shrub recovery and development patterns after clear-cutting and site preparation. We tested the effect of six treatments on shrub growth patterns by incorporating indicator variables into the rate and shape parameters of the models for...
Currents and winds measured over the continental shelf and upper continental slope during the first
half of 1984 are analyzed to determine the character of the flow off central California (Point Conception
to San Francisco). The mean flow was poleward from Point Conception to Point Sur, in opposition to
the...
In the spring of 1992 an optical closure experiment was conducted at Lake
Pend Oreille, Idaho. A primary objective of the experiment was to compare techniques
for the measurement of the spectral absorption coefficient and other inherent optical
properties of natural waters. Daily averages of absorption coefficients measured using
six...
Wood density, moisture content, tracheid width and cell wall size were examined in trees from plots that were sprayed for 5 years with chlorothalonil (Bravo®) fungicide to reduce the impact of Swiss needle cast (SNC) and from trees in adjacent unsprayed plots. The unsprayed (more heavily diseased) trees had significantly...
Pear ester is a characteristic pear flavor attractive to codling moth (i.e., a kairomone). Traps baited with a pear ester lure can be used to monitor male and female adult codling moth activity. Pear ester is a natural volatile produced by ripening pears. Male and female codling moths have specialized...