A5081610723- Fish Ecology and Management Studies
- Marine and fisheries research
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Marine Biology and Ecology Research
- Marine animal studies overview
- Marine and coastal plant biology
- Environmental DNA in Biodiversity Studies
- Wildlife Ecology and Conservation
- Genetic and phenotypic traits in livestock
- Aquatic Invertebrate Ecology and Behavior
- Genetic diversity and population structure
- Marine Bivalve and Aquaculture Studies
- Species Distribution and Climate Change
- Identification and Quantification in Food
- Soil and Water Nutrient Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Underwater Acoustics Research
- Music Technology and Sound Studies
- Oceanographic and Atmospheric Processes
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water Quality and Resources Studies
- Antibiotics Pharmacokinetics and Efficacy
- Hydrology and Watershed Management Studies
- Animal Ecology and Behavior Studies
NOAA National Marine Fisheries Service
2011-2025
NOAA National Marine Fisheries Service Northwest Fisheries Science Center
2016-2025
National Oceanic and Atmospheric Administration
2015-2025
Newport Hospital
2023
University of California, Santa Cruz
2011-2015
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2012-2015
Minnesota Department of Natural Resources
2010-2012
University of Minnesota
2009-2012
NOAA Office for Coastal Management
2010-2011
Environmental Protection Agency
2010-2011
The prevalence and intensity of marine heatwaves is increasing globally, disrupting local environmental conditions. individual population-level impacts prolonged on species have recently been demonstrated, yet whole-ecosystem consequences remain unexplored. We leveraged time series abundance data 361 taxa, grouped into 86 functional groups, from six long-term surveys, diet information a new database, previous modeling efforts, to build two food web networks using an extension the popular...
Major ecological realignments are already occurring in response to climate change. To be successful, conservation strategies now need account for geographical patterns traits sensitive change, as well threats species-level diversity. As part of an effort provide such information, we conducted a vulnerability assessment that included all anadromous Pacific salmon and steelhead (Oncorhynchus spp.) population units listed under the U.S. Endangered Species Act. Using expert-based scoring system,...
Abstract Invasive mammals on islands pose severe, ongoing threats to global biodiversity. However, the severity of from different mammals, and role interacting biotic abiotic factors in driving extinctions, remain poorly understood at a scale. Here we model extirpation patterns for island populations threatened extinct vertebrates. Extirpations are driven by including invasive rats, cats, pigs, mustelids mongooses, native species taxonomic class volancy, size, precipitation human presence....
Reintroductions are commonly employed to preserve intraspecific biodiversity in fragmented landscapes. However, reintroduced populations frequently smaller and more geographically isolated than native populations. Mixing genetically, divergent sources often proposed attenuate potentially low genetic diversity that may result from small effective population sizes. a possible negative tradeoff for mixing is outbreeding depression hybrid offspring. We examined the consequences of mixed-source...
Introduction Understanding how abundance, productivity and distribution of individual species may respond to climate change is a critical first step towards anticipating alterations in marine ecosystem structure function, as well developing strategies adapt the full range potential changes. Methods This study applies NOAA (National Oceanic Atmospheric Administration) Fisheries Climate Vulnerability Assessment method 64 federally-managed California Current Large Marine Ecosystem assess their...
The Northern California Current is a highly productive marine upwelling ecosystem that economically and ecologically important. It home to both commercially harvested species those are federally listed under the U.S. Endangered Species Act. Recently, there has been global shift from single-species fisheries management ecosystem-based management, which acknowledges more complex dynamics can reverberate through food web. Here, we have integrated new research into an end-to-end model (i.e.,...
ABSTRACT Effectively modeling the impact of climate change on any population requires careful consideration diverse pressures. Potential changes in interactions with other species must be accounted for. As communities reassemble and shifts abundance distribution cascade throughout ecosystems, cumulative impacts conservation concern need to explicitly examined. A structured qualitative analysis alternative responses across food web can play a valuable role design interpretation quantitative...
Abstract The field‐derived thermal niche of aquatic vertebrates is potentially useful in determining whether resource management plans are adequate to protect sensitive vertebrates. Our objective was use field data estimate the niches 16 species and compare these values among five geographic regions Oregon. Thermal varied regions; for example, upper limit rainbow trout Oncorhynchus mykiss 22.4°C Blue Mountains ecoregion 16.9°C Cascades ecoregion. Nonmetric multidimensional scaling (NMS)...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 552:271-284 (2016) - DOI: https://doi.org/10.3354/meps11757 REVIEW ecosystem perspectives on Chinook salmon recruitment: a synthesis of empirical and modeling studies from California upwelling system Brian K. Wells1,*, Jarrod A. Santora2, Isaac D. Schroeder3, Nathan Mantua1, William J. Sydeman4, David Huff5,...
Resource managers in the United States and worldwide are tasked with identifying mitigating trade-offs between human activities deep sea (e.g., fishing, energy development, mining) their impacts on habitat-forming invertebrates, including deep-sea corals sponges (DSCS). Related management decisions require information about where DSCS occur what densities. Species distribution modeling (SDM) provides a cost-effective means of potential habitat over large areas to inform these data...
Abstract Predator–prey dynamics can have landscape‐level impacts on ecosystems, and yet, spatial patterns environmental predictors of predator–prey are often investigated at discrete locations, limiting our understanding the broader impacts. At these scales, landscapes contain multiple complex heterogeneous habitats, requiring a spatially representative sampling design. This challenge is especially pronounced in California’s Sacramento–San Joaquin River Delta, where managers require...
Summary 1. The predictive modelling approach to bioassessment estimates the macroinvertebrate assemblage expected at a stream site if it were in minimally disturbed reference condition. difference between and observed assemblages then measures departure of from 2. Most models employ classification, followed by discriminant function (DF) modelling, predict suite environmental variables. Stepwise DF analysis is normally used choose single subset predictor variables with high accuracy for...
Abstract The roles of temperature and ultraviolet radiation (UVR) in determining the spawning success yellow perch Perca flavescens were investigated two Pennsylvania lakes with different dissolved organic carbon (DOC) concentrations. In situ incubation experiments used to manipulate UVR examine hatching time success. Extensive scuba surveys document actual depths. Differences profiles led contrasting responses incubated eggs. Higher temperatures surface waters higher‐DOC lake times that...
During the past century, commercial fisheries have expanded from small vessels fishing in shallow, coastal habitats to a broad suite of and gears that fish virtually every marine habitat on globe. Understanding how developed space time is critical for interpreting managing response ecosystems effects fishing, however series spatially explicit data are typically rare. Recently, 1933–1968 portion catch dataset California Department Fish Wildlife was recovered digitized, completing full...
Abstract Background Ecological and physical conditions vary with depth in aquatic ecosystems, resulting gradients of habitat suitability. Although variation vertical distributions among individuals provides evidence selection, it has been challenging to disentangle how processes at multiple spatio-temporal scales shape behaviour. Methods We collected thousands observations from $$>~300$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>></mml:mo>...
Abstract There is currently only a limited understanding of the relationship between water quality and predation on Pacific salmon Oncorhynchus spp. smolts. We addressed hypothesis that poor will decrease smolt's swimming performance presumably its predator evasion capabilities. Predation major factor affecting smolt survival throughout San Joaquin River Sacramento–San Delta California. Prior studies have quantified rates, but effect capability has not previously been evaluated. juvenile...
The Sacramento-San Joaquin Delta is a major survival bottleneck for imperiled California salmonid populations, which partially due to multitude of non-native fish predators that have proliferated there throughout the 20th century. Understanding diets critical understanding their individual impacts, role in food web, and implications potential management actions. We collected stomach contents Striped Bass Morone saxatilis, Largemouth Micropterus salmoides, Channel Catfish Ictalurus punctatus...
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...
Abstract Objective —To determine the pharmacokinetics of marbofloxacin after oral administration in juvenile harbor seals ( Phoca vitulina ) at a dose 5 mg/kg (2.3 mg/lb) and to compare pharmacokinetic variables analysis by naïve averaged, pooled, nonlinear mixed-effects modeling. Design —Original study. Animals —33 male 22 female being treated for various conditions. Procedures —Blood collection was limited ≤ 3 samples/seal. Plasma concentrations were measured via high-pressure liquid...
1. Fish and invertebrate assemblage data collected from 670 stream sites in Minnesota (U.S.A.) were used to calculate concordance across three nested spatial scales (statewide, ecoregion catchment). Predictive taxa richness models, calibrated using the same data, evaluate whether concordant communities exhibited similar trends human-induced loss all scales. Finally, we evaluated strength of relationship between selected environmental variables composition both assemblages at 2. Significant...
Abstract A fully coupled ecosystem model is used to identify the effects of environmental conditions and upwelling variability on growth juvenile Chinook salmon in central California coastal waters. The framework consists an ocean circulation submodel, a biogeochemical individual‐based submodel for salmon. Simulation results indicate that years favorable off are characterized by particularly intense early season (i.e., March through May), leading enhanced krill concentrations during summer...