187 Works

2014 Operational stock assessments for Georges Bank winter flounder, Gulf of Maine winter flounder, and pollock.

Lisa C. Hendrickson, Paul Nitschke & Brian Linton
This document represents the findings of an Operational Assessment of Georges Bank winter flounder, Gulf of Maine winter flounder, and pollock. The meeting was held August 11-13, 2014 at the Northeast Fisheries Science Center, National Marine Fisheries Service, Woods Hole, MA. The Terms of Reference, following the guidance of the Assessment Oversight Panel, are restricted to updating the catch and survey data for each stock and application of the model used in the last benchmark...

A brief description of Greater Atlantic Region fish and invertebrate discard estimation for the 2015 update to the National Bycatch Report

This report describes the discard estimation analysis performed for Greater Atlantic Region (formerly Northeast Region) fish and invertebrates for the National Bycatch Report First Edition Update 2. Estimates of discards that occurred during the 2011, 2012, and 2013 calendar years in all federally managed fisheries in the northeast United States were derived for 34 species of finfish and invertebrates by using a combined discard/kept ratio estimator. Based on this analysis, approximately 63,680 mt (live weight)...

A theoretical examination of the construction and characterization of super-observations obtained by optimality principles guided by information theory.

Robert James Purser
This note characterizes the optimal construction of (possibly) multi-component super-observation (or ‘super-obs’) based upon the criterion of minimizing the information lost in the super-obbing process. It is asserted that, by an artificial intervention that adjusts the weights given to the super-ob, it is possible to ‘structurally precondition’ the assimilation problem to speed up the convergence of a Krylov-based iterative minimization (such as the conjugate gradient method, for example) without significantly changing the convergent limit of...

Injury determinations for humpback whales and other cetaceans reported to NOAA response networks in the Hawaiian Islands during 2007-2012.

Amanda L. Bradford & Edward G. Lyman
Reports of cetaceans with human-caused injuries in Hawaiian waters are made each year to the Pacific Islands Region Marine Mammal Response Network (PIR-MMRN, coordinated by the Pacific Islands Regional Office) and the Hawaiian Islands Entanglement Response Network (HIERN, coordinated by the Hawaiian Islands Humpback Whale National Marine Sanctuary). These injury reports have largely involved humpback whales that were entangled in fishing gear or marine debris or struck by a vessel. Previously, determinations of injury severity...

Atlas of climatic changes in nine large marine ecosystems of the Northern Hemisphere (1827-2013)

G. G. Matishov, S. V. Berdnikov, A. P. Zhichkin, S. L. Dzhenyuk, , V. V. Kulygin, N. A. Yaitskaya, V. V. Povazhniy, I. V. Sheverdyaev, S. V. Kumpan, I. A. Tret’yakova, A. E. Tsygankova, N. N. D’yakov, V. V. Fomin, D. N. Klochkov, M. Shatohin B., V. V. Plotnikov, N. M. Vakul’skaya, V. A. Luchin & A. A. Kruts
The present Atlas of nine Large Marine Ecosystems (LMEs) is a result of long-term international co-operation of the scientists from Russia, Ukraine, and the USA within the frameworks of national research programmes, focusing on climate change, and international data management projects (GODAR UNESCO and IOC UNESCO). The Atlas encompasses LMEs of the Eastern Arctic Seas: Barents Sea LME (including the White Sea subarea), Kara Sea LME, Laptev Sea LME, East Siberian Sea LME, Chukchi Sea...

A review of the Cooperative Hawaiian Bottomfish Tagging Program of the Pacific Islands Fisheries Science Center and the Pacific Islands Fisheries Group.

The Pacific Islands Fishing Group (PIFG) was awarded a NOAA contract for cooperative research on Hawaii bottomfish in 2007. One of the goals of the cooperative research program with the Pacific Islands Fisheries Science Center was to tag bottomfish in the main Hawaiian Islands. The purpose of this report is to review the tagging program and the data collected to date to determine if the program is meeting the goal of providing sufficient information for...

Observer coverage of the 2014 Gulf of Mexico skimmer trawl fishery.

Elizabeth Scott-Denton, Jo A. Williams & Jeffrey R. Pulver
The skimmer trawl fishery in the northern Gulf of Mexico targets inshore areas to harvest penaeid shrimp (Family Penaeidae). The primary species targeted are brown shrimp, Farfantepenaeus aztecus, from May through July, and white shrimp, Litopenaeus setiferus, from August through December. Skimmer trawls have been documented in Louisiana, Alabama, and Mississippi as well as North Carolina. In 2013, Louisiana sold 3,236 resident ($25 per net) and 76 non-resident ($100 per net) commercial skimmer net licenses....

Deployment performance review of the 2014 North Pacific Groundfish and Halibut Observer Program.

, Jason R. Gasper, Jennifer A. Cahalan, , R. Webster & Zoetrope Teresa A'mar
This report contains the analyses and findings of the Alaska Fisheries Science Center’s Fisheries Monitoring and Analysis Division’s Observer Science Committee on the efficiency and effectiveness of observer deployment in 2014. This review is performed as part of the annual review process implemented by the North Pacific Fishery Management Council for the North Pacific Groundfish and Halibut Observer Program. This report is intended to inform the Council, the National Marine Fisheries Service (NMFS), and the...

Net savvy : a practical guide to zooplankton sampler design.

Eric M Keen
Plankton nets are widely used to sample phytoplankton, zooplankton and small nektonic animals. Here I present a step-by-step guide to designing plankton nets that fit the objectives of a study, the logistics of sampling, and the available budget. The primary three key parameters to determine in net design are mesh size, mouth diameter, and overall net length. These 'key three' are related by the Open-Area Ratio (OAR), the ratio of effective filtering area to mouth...

Scotian Shelf right whale aerial survey project July 18-30, 2014

Timothy V. N. Cole & Allison Henry
National Oceanic and Atmospheric Administration (NOAA) funding and Fisheries and Oceans Canada (DFO) collaboration provided the opportunity for the Northeast Fisheries Science Center (NEFSC) right whale aerial survey team to follow right whales into Canadian waters after completing surveys in the waters off the Northeast United States. We completed eight flights in several areas of the Scotian Shelf during July 18- 30, 2014 , under SARA Section 73 Permit # 330996. From a Twin Otter...

Stock assessment update of Summer Flounder for 2015

Mark Terceiro
This assessment of summer flounder (Paralichthys dentatus) is an update through 2014 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. The summer flounder stock was not overfished but overfishing was occurring in 2014 relative to the biological reference points from the 2013 Stock Assessment Workshop (SAW) 57 benchmark assessment (NEFSC 2013; Figures 1-4). Fishing mortality on the fully selected age 4 fish ranged between 0.793...

U.S. Pacific marine mammal stock assessments, 2014.

James V. Carretta, , , Aimée R. Lang, Karin A. Forney, Jason Daniel Baker, , Brad Hanson, Anthony James Orr, Harriet R. Huber, Mark S. Lowry, Jay Barlow, , Deanna Lynch, & Robert L. Brownell
The 2014 Pacific marine mammal stock assessments include revised reports for 11 Pacific marine mammal stocks under NMFS jurisdiction, including six 'strategic' stocks: Hawaiian monk seal, Southern Resident killer whale, Main Hawaiian Islands Insular false killer whale, Hawaii Pelagic false killer whale, California/Oregon/Washington sperm whale, and Western North Pacific gray whale. New abundance estimates are available for three stocks in the Pacific Islands region and five U.S. west coast stocks. New estimates of abundance for...

Program and abstracts of the 2014 Atlantic Salmon Ecosystems Forum

& Tara R. Trinko Lake
On January 8-9, 2014 the Seventh biennial Atlantic Salmon Ecosystems Forum (ASEF) was held on the campus of the University of Maine, Orono. NOAA Fisheries, composed of the Northeast Fisheries Science Center (NEFSC) and the Greater Atlantic Fisheries Office (GARFO), partnered with Project SHARE, the Diadromous Species Restoration Research Network, the U.S. Fish and Wildlife Service, The Nature Conservancy, and the Atlantic Salmon Federation to sponsor, coordinate, and host the conference... This publication contains the...

Development and testing of a tow time data logger to monitor and enforce tow time restrictions in trawl fisheries.

Eric Matzen, Henry O. Milliken & Nick Lowell
Tow time restrictions have been discussed as a potential alternative for sea turtle conservation in fisheries where Turtle Excluder Devices (TEDs) are known to reduce the targeted catch. Although the length of time a turtle can remain submerged in a trawl is still being evaluated, tows less than 1 hour are expected to result in a negligible number of sea turtle mortalities. Discussion about the feasibility of tow time restrictions often results in concerns about...

Estimates of cetacean and pinniped bycatch in Northeast and Mid-Atlantic bottom trawl fisheries, 2008-2013

Marjorie Lyssikatos
This report provides bycatch mortality estimates for 10 species of small cetaceans and pinnipeds caught in Northeast (NEBT) and mid-Atlantic (MABT) bottom trawl fisheries during 2008-2013. Mean annual serious injuries and mortalities from the NEBT fishery were 1.40 (coefficient of variation [CV]=0.58) minke whales (Balaenoptera acutorostrata), 46.48 (CV=0.17) short-beaked common dolphins (Delphinus delphis), 0.43 (CV=0.79) Risso’s dolphins (Grampus griseus), 24.74 (CV=0.15) long-finned pilot whales (Globicephala melas), 3.10 (CV=0.50) harbor porpoise (Phocoena phocoena), 69.60 (CV=0.13) Atlantic...

Pacific Reef Assessment and Monitoring Program. Benthic monitoring summary : Pacific Remote Island Areas (PRIAs) 2015.

The purpose of this document is to provide a brief summary of the most recent survey efforts conducted in the Pacific Remote Island Areas (PRIAs) by the Coral Reef Ecosystem Division (CRED) of the NOAA Pacific Islands Fisheries Science Center as part of the Pacific Reef Assessment and Monitoring Program (Pacific RAMP). A more detailed assessment of coral populations and reef community structure in the PRIAs will be summarized in a forthcoming annual report.

Pacific reef assessment and monitoring program. Benthic monitoring summary : America Samoa 2015.

The purpose of this document is to provide a brief summary of the most recent survey efforts conducted in the islands of American Samoa by the Coral Reef Ecosystem Division (CRED) of the NOAA Pacific Islands Fisheries Science Center as part of the Pacific Reef Assessment and Monitoring Program (Pacific RAMP). A more detailed assessment of coral populations and reef community structure in American Samoa will be summarized in a forthcoming annual report.

A tsunami forecast model for Elfin Cove, Alaska.

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 (transmitted 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...

Coral reef fish biomass and benthic cover along the north coast of Timor-Leste based on underwater visual surveys in June 2013.

Kaylyn McCoy, Paula Ayotte, , Kevin Lino, Brett Schumacher & Max Sudnovsky
Coral reef fish and benthos were surveyed at 150 shallow-water coral reef sites across the north coast of Timor-Leste in June 2013 during a 21-day survey mission. This project was conducted by the National Oceanic and Atmospheric Administration (NOAA), Pacific Islands Fisheries Science Center's Coral Reef Ecosystem Division (CRED) using consistent methods, survey design, and personnel. The goal of the survey work was to generate baseline data on the nearshore coral reef fish assemblages and...

Methods for the Alaska groundfish first-wholesale price projections: Section 6 of the Economic Status of the Groundfish Fisheries off Alaska.

For a signifcant portion of the year there is a temporal lag in ofcially reported first-wholesale prices. This lag occurs because the prices are derived from the Commercial Operators Annual Report which is not available until after data processing and validation of the data in August of each year. The result is a data lag that grows to roughly a year and a half (e.g., prior to August 2014 the most recent available official prices...

Pacific Reef Assessment and Monitoring Program. Fish monitoring brief : American Samoa, 2012.

The purpose of this document is to outline the most recent survey efforts conducted by the Coral Reef Ecosystem Division (CRED) of the NOAA Pacific Islands Fisheries Science Center as part of the long-term monitoring program known as the Pacific Reef Assessment and Monitoring Program (Pacific RAMP). More detailed survey results will be available in a forthcoming annual status report.

Optimizing biological parameterization in the egg escapement model of the market squid, (Dorytheuthis opalescens), population off California.

Jenny McDaniel, Emmanis Dorval, Julianne Taylor & Dianna Porzio
Over the last two decades, the market squid (Doryteuthis opalescens) fishery has been one of the most productive and valuable fisheries off California. In 2005, the California Department of Fish and Wildlife (CDFW) established a management plan including fishery controls rules with a seasonal catch limitation and a weekend closure of the fishery. In the absence of adequate information to establish a maximum sustainable yield (MSY), the egg escapement method was identified as the best...

Mortality determinations for Baleen whale stocks along the Gulf of Mexico, United States east coast, and Atlantic Canadian provinces, 2008-2012

Allison Henry, Timothy V. N. Cole, Lanni Hall, Wayne Ledwell, David Matthew Morin & Andrew Reid
The Northeast Fisheries Science Center (NEFSC) developed criteria to evaluate reports of human-caused mortality to baleen whales. The criteria minimize the likelihood of incorrectly assigning whale mortalities t o human causes and provide a minimum count of human-caused events. This report describes determinations made for reports received from 2008 - 2012 involving North Atlantic right (Eubalaena glacialis), humpback (Megaptera novaeangliae), fin (Balaenoptera physalus), sei (B. borealis), blue (B. musculus), minke (B. acutorostrata), and Bryde's (B....

2012 final report on the performance of the northeast multispecies (groundfish) fishery (May 2012-April 2013).

Tammy Murphy, Andrew W. Kitts, David Records, Chad K. Demarest, Daniel Caless, John Walden & Sharon Benjamin
This report provides an evaluation of the economic and social performance of active limited access Northeast groundfish vessels for the 2012 fishing year (May 2012 through April 2013). Table 1 contains a summary of major trends for the fishery for the period 2009-2012. The report focuses on changes during 2011-2012, with a brief discussion for some performance indicators of trends from 2009 onward. For the first time in its three year history, this annual report...

PIFSC report on the American Samoa longline fishery, year 2013.

During 2013, the American Samoa longline fishery continued to experience very challenging conditions with respect to declining catch of its primary target species, albacore tuna. This was also the case for most other marketable species. However, increasing catches of species, such as mahimahi, wahoo and yellowfin tuna, may indicate the beginning of an adaptation of this fishery to target species that fetch better prices in local fresh fish markets than at the cannery in Pago...

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