Young western hemlock stands in the Coast Range of Oregon will
contribute to the commercial timber supply of the region in the
future, the extent of the contribution depending on environmental
and cultural factors. The relative diameter and volume growth of
crop-trees in the stands will be increased substantially by...
Recent activity in the exploration and development of the ocean's
resources has created a need for scientific and technical knowledge in
many areas. One example is the need for rapid and reliable techniques
for ascertaining and for the predictions of sea state and the atmospheric
conditions at particular ocean locations....
The theme for the 1989 Starker Lectures concerned uncertainty surrounding forests and forestry in Oregon and the Pacific Northwest. It was a timely theme.
Indeed, the uncertainties concerning trade-offs among commodity production
and environment and the allocation of forest land, especially public lands, loom large as we enter the decade...
Fusarium crown rot (FCR) is one of the most widespread root and
crown diseases of wheat in the Pacific Northwest (PNW) of the United
States. Our objectives were to characterize crown rot severity and
distribution throughout the PNW by conducting a survey of 210 fields
covering the diverse dryland wheat-producing...
Field surveys were conducted by collecting soil samples to estimate
nematode densities in soil from winter wheat, spring wheat, spring
barley, and spring legumes (lentil, chickpea, and pea) fields during
2010 and 2011. Pratylenchus spp. were observed in 60% of sampled
fields. However, nematodes were detected in nearly all of...
We describe continental-scale increases in lake and stream total phosphorus (TP) concentrations, identified through periodic probability surveys of thousands of water bodies in the conterminous U.S. The increases, observed over the period 2000–2014 were most notable in sites in relatively undisturbed catchments and where TP was initially low (e.g., less...
Full Text:
systems disappearing
in the U.S.?
Authors: John L. Stoddard, John Van Sickle, Alan T. Herlihy
We describe continental-scale increases in lake and stream total phosphorus (TP) concentrations, identified through periodic probability surveys of thousands of water bodies in the conterminous U.S. The increases, observed over the period 2000–2014 were most notable in sites in relatively undisturbed catchments and where TP was initially low (e.g., less...
Full Text:
Phosphorus: Are
Oligotrophic Systems Disappearing in the United States?
John L. Stoddard,*,† John Van Sickle
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