Greater scientific knowledge, changing societal values, and legislative mandates have emphasized the importance
of implementing large-scale flow experiments (FEs) downstream of dams. We provide the first global assessment
of FEs to evaluate their success in advancing science and informing management decisions. Systematic
review of 113 FEs across 20 countries revealed...
Greater scientific knowledge, changing societal values, and legislative mandates have emphasized the importance
of implementing large-scale flow experiments (FEs) downstream of dams. We provide the first global assessment
of FEs to evaluate their success in advancing science and informing management decisions. Systematic
review of 113 FEs across 20 countries revealed...
Greater scientific knowledge, changing societal values, and legislative mandates have emphasized the importance
of implementing large-scale flow experiments (FEs) downstream of dams. We provide the first global assessment
of FEs to evaluate their success in advancing science and informing management decisions. Systematic
review of 113 FEs across 20 countries revealed...
Experimental manipulations of streamflow have been used globally in recent decades to mitigate the impacts of dam operations on river systems. Rivers are challenging subjects for experimentation, because they are open systems that cannot be isolated from their social context. We identify principles to address the challenges of conducting effective...
Fundamental objectives in the field of conservation biology involve understanding the processes that influence small and declining populations and applying that knowledge to develop appropriate monitoring strategies and targeted management and conservation actions. Critical first steps in determining the relative role of factors that drive population declines involves estimation of...
The endangered Hawaiian Duck (koloa maoli; Anas wyvilliana), a non-migratory and island-endemic species, experienced a significant population decline during the twentieth century due to factors such as habitat loss, overharvest, introduced mammalian predators, and hybridization with introduced feral Mallards (A. platyrhynchos). A key objective for Hawaiian Duck recovery is to...
Birds affected the community structure of an Oregon rocky shore by
preying upon mussels (Mytilus spp.) and limpets (Collisella spp.). The
impact of such predation is potentially great, as mussels are the
competitively dominant mid-intertidal space-occupiers, and limpets are
important herbivores in this community.
Prey selection by birds reflects differences...
The purposes of this paper are to present the results of an experimental effort to measure the level swell in an air/water system and to generate a methodology for determining the volume-averaged void fraction within the Oregon State University (OSU) Advanced Plant Experiment (APEX) Test Facility. The results were then...
Bedrock groundwater dynamics in headwater catchments are poorly understood and
poorly characterized. Direct hydrometric measurements have been limited due to the
logistical challenges associated with drilling through hard rock in steep, remote and
often roadless terrain. Here we develop and use an inexpensive, portable bedrock
drilling system to explore bedrock...
This thesis presents the details of a large-scale laboratory experiment to study the
turbulence generated by waves breaking on a fixed barred beach. The data set includes
comprehensive measurements of free surface displacement and fluid velocity for one
random and one regular wave case.
Observations of the time-averaged turbulent kinetic...