A5018533678- Fish Ecology and Management Studies
- Water Quality and Resources Studies
- Hydrology and Sediment Transport Processes
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Marine and fisheries research
- Environmental DNA in Biodiversity Studies
- Hydrology and Watershed Management Studies
- Turfgrass Adaptation and Management
- Water Quality Monitoring Technologies
- Archaeology and Natural History
- Wildlife Ecology and Conservation
- Underwater Acoustics Research
- Rangeland and Wildlife Management
- Soil and Water Nutrient Dynamics
- Hemiptera Insect Studies
- Ecology and biodiversity studies
- Water-Energy-Food Nexus Studies
- Marine animal studies overview
- Fish biology, ecology, and behavior
- Botany, Ecology, and Taxonomy Studies
- Avian ecology and behavior
- Turtle Biology and Conservation
- Scarabaeidae Beetle Taxonomy and Biogeography
- Modeling, Simulation, and Optimization
NOAA National Marine Fisheries Service
2009-2024
NOAA National Marine Fisheries Service Northwest Fisheries Science Center
2010-2024
National Oceanic and Atmospheric Administration
2012-2024
Guy's and St Thomas' NHS Foundation Trust
2024
NOAA National Marine Fisheries Service Alaska Fisheries Science Center
1995
Summary 1. Migration timing in animals has important effects on life‐history transitions. Human activities can alter migration of animals, and understanding the such disruptions remains an goal for applied ecology. Anadromous Pacific salmon ( Oncorhynchus spp.) inhabit fresh water as juveniles before migrating to ocean where they gain >90% their biomass returning adults reproduce. Although construction dams delayed juvenile many populations, we currently lack a synthesis patterns how...
Radiation exposure during fluoroscopically guided interventions such as endovascular aortic repair (EVAR) is a growing concern for operators. This study aimed to measure DNA damage/repair markers in operators perfoming EVAR.Expression of the marker, γ-H2AX and damage response phosphorylated ataxia telangiectasia mutated (pATM), were quantified circulating lymphocytes peri-operative period (infrarenal, branched, fenestrated) open using flow cytometry. These separately measured same but this...
Using yearling chinook salmon Oncorhynchus tshawytscha and steelhead O. mykiss tagged with passive integrated transponders (PITs), we estimated passage survival through bypass systems, turbines, spill bays without flow deflectors at Snake River dams relative to of fish released into the tailrace below dam. Actively migrating were collected marked PIT tags dam smolt collection facilities. Groups then hoses different routes; releases coincident a release approximately 1–2 km Relative was by...
Abstract We evaluated the survival of juvenile salmon through turbines in Columbia River dams and found no differences between two operations but strong evidence delayed mortality from turbine passage. After tagging with a passive integrated transponder (PIT) tag radio tag, yearling Chinook Oncorhynchus tshawytscha were released at McNary Dam on operating both within 1% peak efficiency (a discharge rate 317 m 3 /s) outside range maximum blade angle (464 /s). Estimated relative to detection...
Abstract Survival, growth, and juvenile migration timing are key life history traits for at‐risk salmon populations. To estimate these in threatened wild Snake River spring–summer Chinook Oncorhynchus tshawytscha , we tagged fish as parr 3–17 natal streams per year from 1991 to 2003. We injected passive integrated transponder tags into collected within the Salmon basin Idaho. Each spring, after previous summer's tagging, were detected smolts bypass systems of lower dams. Estimated...
Abstract We recovered passive integrated transponder (PIT) tags from nine piscivorous waterbird colonies in the Columbia River basin to evaluate avian predation on Endangered Species Act (ESA)‐listed salmonid Oncorhynchus spp. populations during 2007–2010. Avian rates were calculated based percentage of PIT‐tagged juvenile salmonids that detected as passing hydroelectric dams and subsequently consumed deposited by birds their nesting colonies. Caspian terns Hydroprogne caspia (hereafter,...
Abstract Past research indicates that on an annual basis, smolts of stream‐type Chinook salmon Oncorhynchus tshawytscha collected at Snake River dams and transported by barge to below Bonneville Dam have greater post‐hydropower system mortality than migrate in‐river. To date, this difference has most commonly been attributed stress from collection transportation, leading decreased disease resistance or predator avoidance ability. Using both hatchery wild passive integrated transponder (PIT)...
Abstract Little is known of how fish respond to the hydraulic environment associated with diversion or bypass structures at hydroelectric power installations. To address this lack knowledge, paper presents results from a study assess three species Pacific salmonid smolt ( Oncorhynchus spp.) responded distinct gradients velocity and depth two submerged weirs as they passed through an experimental flume McNary Dam (Columbia River, USA) under illuminated dark conditions. Migrating smolts...
In 2015, the Pacific marine heat wave, low river flows, and record high water temperatures in Columbia River Basin contributed to a near-complete failure of adult migration endangered Snake sockeye salmon (Oncorhynchus nerka, NOAA Fisheries 2016). These extreme weather events may become new normal due anthropogenic climate change, with catastrophic consequences for species. Existing pressures amplify vulnerability but these potential synergies have rarely been quantified. We examined factors...
A study was conducted to compare the travel times, detection probabilities, and survival of migrant hatchery-reared yearling chinook salmon Oncorhynchus tshawytscha tagged with either gastrically or surgically implanted sham radio tags (with an imbedded passive integrated transponder (PIT) tag) those their cohorts only PIT in Snake Columbia rivers. Juvenile migrated significantly faster than radio-tagged PIT-tagged fish, while migration rates were similar among fish. The probabilities tag at...
Considerable effort towards conservation has contributed to the recovery of historically depleted pinniped populations worldwide. However, in several locations where pinnipeds have increased, they been blamed for preventing commercially valuable fish species through predation. Prompted by increasing abundance within Columbia River (CR), USA, over a 6-year period, we used passive integrated transponder tags measure survival adult spring-run Chinook salmon (Oncorhynchus tshawytscha) estuary...
Passage success of adult Pacific lamprey Lampetra tridentata at a large, hydropower dam was negatively correlated with the size surgically implanted transmitters. This comparatively large field study (>800 fish) found effects that were not detectable in laboratory.
Abstract Experiences of migratory species in one habitat may affect their survival the next habitat, what is known as carryover effects. These effects are especially relevant for understanding how freshwater experience affects anadromous fishes. Here, we study juvenile salmon passage through a hydropower system (Snake and Columbia rivers, northwestern United States). To reduce direct effect hydrosystem on juveniles, some fishes transported barges, while others allowed to migrate in‐river....
Documentation of adult salmonid migration behavior in the Columbia River drainage is critically needed to assess effects dams on travel time and passage. In 2000, we compared upstream times passive integrated transponder (PIT)-tagged radio-tagged chinook salmon Oncorhynchus tshawytscha from Bonneville Dam lower Lower Granite Snake River. We found no evidence that radio tagging negatively affected behavior. fact, their median (14.1 d, range = 7.8-44.4 N 113) was actually faster (statistically...
Abstract From 1987 to 1992, we evaluated a fish bypass system at Bonneville Dam Powerhouse 2 on the Columbia River. The survival of subyearling Chinook salmon Oncorhynchus tshawytscha released into ranged from 0.774 0.911 and was significantly lower than test turbines area immediately below powerhouse where flow reentered river. Yearling yearling coho O. kisutch were injured or descaled. Also, levels blood plasma cortisol lactate higher in that passed through directly net located over exit....
Abstract We quantified the percentage of PIT‐tagged subyearling fall Chinook Salmon Oncorhynchus tshawytscha that were consumed by Caspian terns Hydroprogne caspia and double‐crested cormorants Phalacrocorax auritus nesting on East Sand Island in Columbia River estuary electronically recovering PIT tags deposited bird colonies. released 23 groups from hatcheries lower downstream Bonneville Dam 2002 to 2010. Vulnerability avian predation was compared between subyearlings two basin stocks:...
We evaluated a system to divert salmonid smolts tagged with passive integrated transponders (PIT) from the general migrant population as they passed through juvenile collection at hydroelectric dam on Snake River. Our goal was maximize diversion of PIT-tagged fish while simultaneously minimizing untagged fish. The slide-gate that tested diverted 81% detected. number entering every proportional abundance and averaged one for Measures descaling, injury, mortality all in were similar those not...
Abstract We developed a prototype detection system with increased reading range for passive integrated transponder (PIT) tags. The eliminates the need to route juvenile salmonids sampling and collection facilities allows fisheries management greater flexibility in safely bypassing at dams. This technology can be applied PIT‐tag studies elsewhere, especially those directed recovery of threatened endangered salmonid populations. exceeded intended goal 95% tag‐reading efficiency yielded...
Abstract The objective of this study was to evaluate a newly miniaturized prototype an implantable acoustic tag for use in subyearling hatchery Chinook salmon Oncorhynchus tshawytscha . In 2003, when the conducted, relatively large size most tags limited their juvenile fish. We evaluated (21 × 7 6 mm, 0.9 g air) effects on growth, survival, and retention. All fish were passive integrated transponder (PIT) tagged accordance with proposed practical application which PIT‐tagged from known...
Anterior lumbar interbody fusion (ALIF) can treat spondylolisthesis, degenerative disc disease and pseudoarthrosis. This approach facilitates complete discectomy, space distraction, indirect decompression of neural foramina placement large devices. Several intra- postoperative complications be attributed to the anterior approach: vascular/visceral injury, hypogastric plexus injury urogenital consequences. Spine-specific include implant migration, graft failure, pseudoarthrosis persistent...
Abstract Objectives Annual migration monitoring can help to discern patterns and environmental factors that impact growth, survival, movement timing in small fish. Mark–recapture methods form the basis for such monitoring, standard 12‐mm passive integrated transponder (PIT) tag has emerged as an essential tool studies of juvenile salmonids. A smaller, 9‐mm PIT now provides potential conduct mark–recapture on smaller We evaluated relative performance tag, which is similar design its...
Abstract The ability to manage anthropogenic actions that affect the dynamics of animal populations requires identification and understanding life‐stage‐specific mortality. This can be confounded when expression mortality is removed, in time or space, from its cause. For years, researchers studying endangered Snake River spring–summer Chinook salmon Oncorhynchus tshawytscha have debated magnitude related to—but expressed after—passage through Columbia hydropower system (“latent” mortality)....