The relative contribution of various inorganic and organic forms of nitrogen to the nitrogen requirements of picoplankton was examined with 15N tracers. Size fractionation was used to measure uptake by <1-μM size microorganisms, and inhibitors of protein synthesis were used to separate procaryotic from eucaryotic nitrogen uptake, Picoplankton utilized mainly...
A trophic model that simulates interactions between
a predatory fish (Pacific hake, Merluccius productus), forage
fish, and juvenile salmon off the Columbia River
was constructed to identify if trophic interactions could
account for marine mortality of Columbia River juvenile
salmon. The model estimates the number of juvenile
salmon that are...
The Pacific lamprey (Entosphenus tridentatus) is in decline in the Columbia River Basin, and translocating adult lamprey to bypass difficult migration corridors has been implemented since 2000. We describe and report results from two current translocation programs, provide context for use of translocation, and discuss potential benefits, risks, and uncertainties....
We used simulated magnetic displacements to test orientation preferences of
juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields
existing at the northernmost and southernmost boundaries of their oceanic
range. Fish reared in natural magnetic conditions distinguished between
these two fields by orienting in opposite directions, with headings that
would...
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Nathan F. Putman, Amanda M. Meinke, and DavidL. G. Noakes
Rearing
We used simulated magnetic displacements to test orientation preferences of
juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields
existing at the northernmost and southernmost boundaries of their oceanic
range. Fish reared in natural magnetic conditions distinguished between
these two fields by orienting in opposite directions, with headings that
would...
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. Meinke3 and DavidL. G. Noakes1,3
1Department of Fisheries and Wildlife, Oregon State University
The City of Newport (City) plans to develop a tsunami evacuation site to serve the
South Beach area. The proposed site consists of an undeveloped hill located
adjacent to Highway 101, southwest of the Yaquina Bay Bridge (Figure 1A,
Appendix A). The site will be designated Safe Haven Hill. This...
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, estimated costs or
schedule.
Sincerely,
FOUNDATION ENGINEERING, INC.
DavidL. Running, P.E., G.E
The City of Newport (City) plans to develop a tsunami evacuation site to serve the
South Beach area. The proposed site consists of an undeveloped hill located
adjacent to Highway 101, southwest of the Yaquina Bay Bridge (Figure 1A,
Appendix A). The site will be designated Safe Haven Hill. This...
Full Text:
assistance.
Sincerely,
FOUNDATION ENGINEERING, INC.
DavidL. Running, P.E., G.E. James K