187 Works

Technical documentation of the Beaufort Assessment Model (BAM)

Eric H. Williams & Kyle W. Shertzer
The Beaufort Assessment Model (BAM) applies a statistical catch-age formulation implemented with the AD Model Builder software (Fournier et al. 2012) and fitted to multiple data sources simultaneously in a single integrated analysis (Maunder and Punt 2013). In essence, the model simulates a population forward in time while including fishing and biological processes (Quinn and Deriso 1999; Shertzer et al. 2014). Quantities to be estimated are systematically varied until characteristics of the simulated population match...

Community HWRF users guide V3.6A

Christina Holt, Ligia Bernardet, Richard Yablonsky & Timothy Brown
The Weather Research and Forecast (WRF) system for hurricane prediction (HWRF) is an operational model implemented at the National Centers for Environmental Prediction (NCEP) of the National Weather Service (NWS) to provide numerical guidance to the National Hurricane Center for the forecasting of tropical cyclones’ track, intensity, and structure. HWRF v3.6a and this Users’ Guide contain the capabilities of the operational 2014 implementation of HWRF

A tsunami forecast model for Santa Monica, California

The present study documents the development of a tsunami forecast model for Santa Monica, California. Santa Monica is a highly populated major resort town with extensive entertainment areas along the beach, visited every year by thousands of local residents and tourists. Santa Monica is 12.5 km north of Los Angeles International Airport (LAX), a critical facility in the event of a natural disaster. Thus, the forecast model grid covers the communities of Venice Beach, Marina...

The search for juvenile bumphead parrotfish (Bolbometopon muricatum) in the lagoon at Wake Island

Meagan Sundberg, Donald R. Kobayashi, Samuel Kahng, Stephen Karl & Jill P. Zamzow
The bumphead parrotfish (Bolbometopon muricatum) is a large, benthic grazing fish found on coral reefs of the Indo-West Pacific. Bumphead parrotfish do not occur within state waters of the United State (U.S.), but occur in certain U.S. jurisdictions such as the territories of Guam, Northern Mariana Islands, and American Samoa; and in the U.S. Pacific Remote Island Areas (PRIAs) of Palmyra, Jarvis Island, and Wake Island (Mundy, et al. 2011). The bumphead parrotfish is thought...

A tsunami forecast model for Arena Cove, California

Michael C. Spillane
Operational tsunami forecasting by NOAA's Tsunami Warning Centers relies on the detection of tsunami wave trains in the open ocean, inversion of these data (telemetered via satellite) to quantify their source characteristics, and real-time modeling of the impact on threatened coastal communities. The latter phase of the process involves, for each such community, a pre-tested forecast model capable of predicting the impact, in terms of inundation and dangerous inshore currents, with sufficient resolution and within...

Costs, earnings, and employment in the Alaska Saltwater Sport Fishing Charter sector, 2011-2013

Daniel Kevin Lew, G. Sampson, Amber H. Himes-Cornell, James Lee & Brian E. Garber-Yonts
In recent years Alaska's sport fisheries have undergone substantial changes, particularly in the management of the Pacific halibut (Hippoglossus stenolepis) charter fishery. As a result of these regulatory changes, participation in the charter sector Pacific halibut fishery has been capped with a limited entry program and charter vessel operators in some areas have been subject to size restrictions and bag limits on the catch of Pacific halibut during guided trips. Additionally, a halibut catch sharing...

Assessment of a pilot study to collect coral bycatch data from the Alaska commercial fishing fleet

Robert P. Stone, & Sandra Brooke
The North Pacific Groundfish and Halibut Observer Program is a potentially huge source of coral location data that could provide much needed information on high diversity hotspots and vulnerable marine ecosystems. We implemented a pilot project in 2012 and 2013 with experienced fisheries observers to improve data collection on coral bycatch by the Alaskan commercial fishing fleet. Observers were provided with coral identification training in a classroom setting and taxonomic field guides and instructed to...

A handy field guide to the nearshore marine fishes of Alaska

S. W. Johnson, A. Darcie Neff & Mandy R. Lindeberg
This guide culminated from years of research on the importance of the nearshore marine environment to fishery resources in Alaska. We were continually astounded by the abundance and diversity of fishes that use the nearshore, particularly the early life history stages of many species. The lack of a portable field guide, and the difficulty in identifying the young of some species in the field, prompted us to create this guide. We hope "A Handy Field...

Genetic stock composition analysis of Chinook salmon bycatch samples from the rockfish and arrowtooth flounder 2013 Gulf of Alaska trawl fisheries and the Gulf of Alaska salmon excluder device test

Jeffrey Robert Guyon, , Charles. M. Guthrie, J. Bonney, K. McGauley, K. Hansen & J. Gauvin
A genetic analysis of samples from the Chinook salmon (Oncorhynchus t shawytscha) bycatch of the 2013 Gulf of Alaska (GOA) trawl fisheries for Pacific rockfish (Sebastes spp.) and arrowtooth (Atheresthes stomias) flounder was undertaken to determine the stock composition of the sample sets. Samples were genotyped for 43 single nucleotide polymorphism (SNP) DNA markers and results were estimated using the Alaska Department of Fish and Game (ADF&G) SNP baseline. In 2013, genetic samples from the...

Smooth sheet bathymetry of the central Gulf of Alaska.

& M. M. Prescott
We assembled 1.75 million bathymetric soundings from 225 lead-line and single-beam echo sounder hydrographic surveys conducted from 1901 to 1999 in the central Gulf of Alaska. These bathymetry data are available from the National Geophysical Data Center (NGDC: http:// www.ngdc.noaa.gov), which archives and distributes data that were collected by the NOS (National Ocean Service), its predecessors, and others. While various bathymetry data have been previously downloaded from NGDC, compiled, and used for a variety of...

Stock assessment update for the main Hawaiian Islands Deep 7 bottomfish complex through 2013 with projected annual catch limits through 2016.

, Annie Yau, Joseph O'Malley, Allen Hia Andrews, Robert Leslie Humphreys, , Minling Pan, Michael Parke & Eric Fletcher
A stock assessment update of the main Hawaiian Islands Deep7 bottomfish complex was conducted through fishing year 2013. This update used the previous benchmark assessment data analysis, modeling, and stock projection approaches with one major improvement in CPUE standardization. This update was conducted using up-to-date re-audited bottomfish catch and effort data from Hawaii state commercial catch reports for the years 1948-2013. Unreported catch was estimated and included in the model using the previous methods. Standardized...

Injury determinations for cetaceans observed interacting with Hawaii and American Samoa longline fisheries during 2008-2012

Amanda L. Bradford & Karin A. Forney
Cetacean interactions (i.e., hookings and entanglements) with the Hawaii and American Samoa longline fisheries observed during 2008 - 2012 were compiled, and the number of cetacean deaths, serious injuries, and non-serious injuries by fishery, species, and management area were assessed. These values form the basis of the mortality and serious injury estimates included in the stock assessment reports of stocks impacted by these fisheries. Injury determinations were made using a revised process for distinguishing serious...

GSICS quarterly. Volume 9, number 1 (2015)

Global Space-Based Inter-Calibration System Coordination Center.

Characterization of the southeastern U.S. Atlantic mid-shelf and deepwater reef fish fisheries.

Michael P. Enzenauer, Simon J. B. Gulak, Bethany M. Deacy &
Observations of the southeastern U.S. Atlantic mid-shelf and deepwater reef fish fisheries (NC through Florida) began in 2007 (Helies and Jamison, 2013). This work was done through the Gulf & South Atlantic Fisheries Foundation soliciting fishing vessels and captains to participate in voluntary observer coverage. The objective was to characterize catch and discards within the snapper-grouper vertical hook-and-line fishery. This approach, while cooperative and inclusive, introduced spatial and temporal sampling biases and did not collect...

An overview of the annual cost survey protocol and results in the Northeast (2007 to 2009).

Chhandita Das
Fisheries vessel cost data are used in virtually every framework, amendment and fishery management plan that requires economic analyses. This document summarizes the results of the annual commercial vessel cost data collection program conducted by the staff of the Social Sciences Branch of the NMFS Northeast Fisheries Science Center in 2007, 2008, and 2009. Information is presented on data collection methodology, data coverage, and data quality. Summary statistics are provided by vessel characteristics. Cost estimation...

Northeast trip cost data : overview, estimation, and predictions.

Chhandita Das
This document gives an overview of the latest eight years of trip cost data, from 2005-2012. It explains the data collection process, types of data collected, and data coverage and quality. Several summary statistics of the data by selected vessel and trip characteristics are also presented. A modeling framework for estimation and prediction of costs is also given. This process will allow estimation of vessel level aggregate trip cost, which in combination with a vessel's...

U.S. Atlantic and Gulf of Mexico marine mammal stock assessments, 2013.

Timothy V. N. Cole, Laura Engleby, , Allison Henry, , Christopher Orphanides, Richard M. Pace, , Marjorie Lyssikatos & Frederick W. Wenzel
The MMPA requires NMFS and USFWS to review these reports annually for strategic stocks of marine mammals and at least every 3 years for stocks determined to be non - strategic. Included in this report as appendices are : 1) a summary of serious injury/mortality estimates of marine mammals in observed U.S. fisheries (Appendix I), 2) a summary of NMFS records of large whale/human interactions examined for this assessment (Appendix II), 3) detailed fisheries information...

Human-caused injury and mortality of NMFS-managed Alaska marine mammal stocks, 2009-2013.

V. T. Helker, & Lauri A. Jemison
The National Marine Fisheries Service (NMFS) is required under the Marine Mammal Protection Act (MMPA) to estimate the annual human-caused mortality and serious injury of marine mammal stocks by source. Revisions to NMFS’ guidelines and methods for distinguishing serious from non-serious injuries pursuant to the MMPA were implemented in 2013. Data from documented interactions between humans and Alaska pinnipeds and cetaceans under the jurisdiction of the NMFS were compiled for the 5-year period from 2009...

White paper on Gulf of Mexico mercury fate and transport.

, Mark Cohen, Chad Hammerschmidt, William Landing, Darren Rumbold & James Simons
This white paper provides back ground and rationale for the priorities laid out in the Action Plan and summarizes our current understanding of mercury in the Gulf of Mexico ecosystem. In addition, the Action Plan emphasizes the identification of special at-risk consumers who ingest larger than average amounts of Gulf of Mexico fish, especially fish with higher than average mercury concentrations . For this reason, we have structured this white paper starting with mercury exposure...

Multi-bank power supply system for small towed hydrophone arrays.

Emily T. Griffiths, J. Scott Ferguson, & Shannon Rankin
Passive acoustic monitoring is quickly becoming a standard component of shipboard cetacean population surveys. Power supplies on survey vessels are often electronically noisy and result in poor quality recordings. An independent battery-powered voltage supply is regularly necessary for high quality recordings. Here we describe the design of a simple system to provide independent, single-sided 12 V power for a towed hydrophone system, such as the Southwest Fisheries Science Center's (SWFSC) Acoustic Recording System (ARS, Rankin...

Assessment of the Pacific sardine resource in 2015 for U.S.A. management in 2015-16.

Kevin T. Hill, , Emmanis Dorval & Beverly J. Macewicz
The following Pacific sardine assessment update was conducted to inform U.S. fishery management for the fishing year that begins July 1, 2015 and ends June 30, 2016. Model 'T' represented the final base model from the most recent stock assessment review (STAR) conducted in March 2014 (Hill et al. 2014, STAR 2014). This update assessment appends Model T with one additional year of data from fishery-dependent and -independent sources and is based on similar parameterizations...

Serious injury determinations for small cetaceans and pinnipeds caught in commercial fisheries off the Northeast U.S. coast, 2012.

Gordon T. Waring, Elizabeth Josephson, Marjorie Lyssikatos & Frederick W. Wenzel
The Marine Mammal Protection Act (MMPA) requires the National Marine Fisheries Service (NMFS) to estimate annual levels of human-caused mortality and serious injury to marine mammal stocks (section 117) and to categorize commercial fisheries based on their level of incidental mortality and serious injury of marine mammals (section 118). A serious injury is defined as an injury that is more likely than not to result in mortality. Serious injury (SI) determinations were addressed at NMFS-convened...

Sources of human-related injury and mortality for U.S. Pacific west coast marine mammal stock assessments, 2009-2013.

James V. Carretta, , Sarah Margaret Wilkin, Justin Greenman, Kristin Marie Wilkinson, Monica DeAngelis, Justin Viezbicke, Daniel D. Lawson, Jeremy D. Rusin & Jason Earl Jannot
This report contains updated records of human-caused injury and mortality to pinnipeds and cetaceans from 2009 to 2013 for marine mammal populations that occur in U.S. west coast waters and which are evaluated in Pacific region marine mammal stock assessment reports (SARs) (Carretta et al. 2013a, 2013b). Mortality records, while included in this report, were obviously not evaluated for SI/NSI status. Subsistence and directed takes (i.e., gray whales taken by Russian natives) are not reported...

Estimates of cetacean and pinniped bycatch in the 2013 New England sink and Mid-Atlantic gillnet fisheries

Joshua M. Hatch & Christopher Orphanides
This report provides estimated bycatch of 8 species of small cetaceans and pinnipeds bycaught in the New England sink (NESG) and mid-Atlantic (MAG) gillnet fisheries. The 2013 serious injuries and total mortalities in the NESG fishery were 399 (coefficient of variation [CV] = 0.33) harbor porpoises (Phocoena phocoena phocoena),104(CV=0.47)short-beaked common dolphins (Delphinus delphis delphis),4(CV=1.03)Atlantic white-sided dolphins (Lagenorhynchus acutus), 27 (CV = 0.95) common bottlenose dolphins (Tursiops truncatus truncatus), 23 (CV = 0.97) Risso's dolphins (Grampus...

Revised stock boundaries for false killer whales (Pseudorca crassidens) in Hawaiian waters.

Amanda L. Bradford, , Robin W. Baird, Karin A. Forney & Nancy C. Young
Three populations of false killer whales (Pseudorca crassidens) have been identified in the U.S. Exclusive Economic Zone of the Hawaiian Archipelago (Hawaiian EEZ): 1) a main Hawaiian Islands (MHI) insular population, 2) a pelagic population, and 3) a Northwestern Hawaiian Islands (NWHI) population. Spatially-explicit stock boundaries are needed to assess and manage each population. New data, primarily satellite telemetry data, were collected that indicate the existing stock boundaries should be refined. These data were used...

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