A5075895488- Marine and fisheries research
- Fish Ecology and Management Studies
- Marine Bivalve and Aquaculture Studies
- Coral and Marine Ecosystems Studies
- Distributed and Parallel Computing Systems
- Advanced Data Storage Technologies
- Fish Biology and Ecology Studies
- Scientific Computing and Data Management
- Parallel Computing and Optimization Techniques
- Cloud Computing and Resource Management
- Interconnection Networks and Systems
- Ichthyology and Marine Biology
- Methane Hydrates and Related Phenomena
- Genetic diversity and population structure
- Distributed systems and fault tolerance
- Service-Oriented Architecture and Web Services
- Atmospheric and Environmental Gas Dynamics
- Wildlife Ecology and Conservation
- Fish biology, ecology, and behavior
- Identification and Quantification in Food
- Stock Market Forecasting Methods
- Reproductive biology and impacts on aquatic species
- Insect Pest Control Strategies
- Aquatic Ecosystems and Biodiversity
- Big Data Technologies and Applications
NOAA National Marine Fisheries Service
2015-2024
NOAA National Marine Fisheries Service Northwest Fisheries Science Center
2015-2024
National Oceanic and Atmospheric Administration
2012-2023
University of Washington
2007-2020
Argonne National Laboratory
2010-2013
University of Colorado Boulder
2005-2009
University of Colorado System
2009
Seattle University
2008
Moss Landing Marine Laboratories
2003
Fordham University
2003
Abstract Molecular genetic data have found widespread application in the identification of population and conservation units for aquatic species. However, integration information into actual management has been slow, explicit quantitative inclusion fisheries models is rare. In part, this reflects inherent difficulty using markers to draw inferences about demographic independence, which generally greatest short‐term interest fishery managers. practical constraints, institutional structures...
The largest-scale high-performance (HPC) systems are stretching parallel file to their limits in terms of aggregate bandwidth and numbers clients. To further sustain the scalability these systems, researchers HPC storage architects exploring various system designs. One proposed design integrates a tier solid-state burst buffers into absorb application I/O requests. In this paper, we simulate explore for use by large-scale systems. First, examine patterns on an existing identify common...
The majority of global fish stocks lack adequate data to evaluate stock status using conventional assessment methods. This poses a challenge for the sustainable management these stocks. Recent requirements set scientifically based catch limits in several countries, and growing consumer demand sustainably managed have spurred an emerging field methods estimating overfishing thresholds setting with limited data. Using strategy evaluation framework we quantified performance number data-limited...
Scientists and resource managers need to know life history parameters (e.g., average mortality rate, individual growth maximum length or mass, timing of maturity) understand respond risks natural populations ecosystems. For over 100 years, scientists have identified "life invariants" (LHI) representing pairs whose ratio is theorized be constant across species. LHI then promise allow prediction many from field measurements a few important traits. Using in this way, however, neglects any...
Abstract Current fisheries management policies generally require an assessment of stock status, which is a difficult task when population and data are limited. Three simple metrics based on catch length compositions (i.e., that reflect exclusive take mature individuals, P mat ; consist primarily fish optimal size, the size at highest yield from cohort occurs, opt demonstrate conservation large, mega ) can be used to monitor status relative exploitation. The (collectively referred as x were...
Abstract The majority of the world's fisheries, by number, are data‐poor/limited, and there is a growing body literature pertaining to approaches estimate data‐limited stock status. There at least two drivers for assessing status fisheries. first try understand report on global or regional fisheries across many stocks. second attempt assess individual stocks, reporting and/or guiding management decisions. These have led attempts find simple, generic, low‐cost solutions, including broad...
Abstract Performance evaluation of data-limited, length-based methods is instrumental in determining and quantifying their accuracy under various scenarios providing guidance about model applicability limitations. We conducted a simulation–estimation analysis to compare the performance four stock assessment methods: Thompson Bell (TB), spawning potential ratio (LBSPR), integrated mixed effects (LIME), risk (LBRA), varying life history, exploitation status, recruitment error scenarios. Across...
The quantity of data from many small-scale fisheries is insufficient to allow for the application conventional assessment methods. Even though in countries they are moving closed-loop simulations assess performance different management procedures data-limited situations, managers most developing still demanding information on stock status. In this study we use common metric harvest rate evaluate and compare following catch-only length-only models: catch – maximum sustainable yield...
Surplus production represents the processes that affect sustainable fishery harvest and is central to ecology management of marine fishes. Taxonomy life history influence ratio spawning biomass at maximum yield average unfished (SB MSY /SB 0 ), estimating this for individual stocks notoriously difficult. We use a database published landings data stock assessment estimates determine process errors predominate in set by fitting state–space model from each individually. then fit multispecies...
Large scombrids, commercial tuna species, are regularly assessed and managed. However, most of the small many mackerels bonitos, lack accurate catch data to implement traditional stock assessments despite their economic importance in small-scale fisheries. In this study, we analysed different approaches using length composition from multiple fleets with gear selectivity assess scombrids Atlantic Ocean. Using simulated populations, compared two length-based methods (length-based spawning...
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...
A way to explicitly incorporate ageing error into the estimation of von Bertalanffy growth function (VBGF) parameters using a random effects (RE) modeling framework is presented. This RE also accounts for selectivity on curve by characterizing distribution true ages derived from multiple age reads either an exponential or gamma distribution. Simulation testing across four life histories used compare approach with standard nonlinear (SNL) approaches that use primary, average, median in...
While network bandwidth is steadily increasing, it doing so at a much slower rate than the corresponding increase in CPU performance. This trend has widened gap between and speed. In this paper, we investigate improvements to I/O performance by exploiting gap. We harness idle resources compress traffic, reducing amount of data transferred over increasing effective bandwidth. created set compression services within Forwarding Scalability Layer. These transparently decompress as network....
Abstract The Magnuson–Stevens Fishery Conservation and Management Act (MSA) requires active management of all stocks at risk overfishing or otherwise in need conservation management. In the Pacific Council groundfish fishery plan, about two‐thirds more than 90 managed are currently without traditional assessments to help define stock status relation targets. Stock complexes often employed for purposes such situations. guidelines issued response 2006 MSA amendments defined a complex as group...
Abstract Meta‐analysis has been an integral tool for fisheries researchers since the late 1990s. However, there remain few guidelines design, implementation or interpretation of meta‐analyses in field fisheries. Here, we provide necessary background readers, authors and reviewers, including a brief history use meta‐analysis fisheries, overview common model types distinctions, examples different goals that can be achieved using meta‐analysis. We outline primary challenges implementing...