WorldCat Identities

Bigelow, Keith

Works: 18 works in 22 publications in 1 language and 142 library holdings
Genres: Maps  Atlases  Conference papers and proceedings 
Roles: Author, Redactor
Publication Timeline
Most widely held works by Keith Bigelow
Atlas of Saskatchewan by J. Howard Richards( )

2 editions published in 1999 in English and held by 92 WorldCat member libraries worldwide

"This CD edition of the Atlas of Saskatchewan provides a comprehensive, in-depth view of the province. It conveys geographical, historical, economic and social information in a new, interactive, multimedia environment. It is designed for a broad range of users and offers a valuable learning experience for children and young adults as well as providing an unique reference tool for people of all ages"--Container
North Pacific blue shark stock assessment by P Kleiber( Book )

1 edition published in 2009 in English and held by 3 WorldCat member libraries worldwide

Corrected catch histories and logbook accuracy for billfishes (Istiophoridae) in the Hawaii-based longline fishery by Bill Walsh( )

1 edition published in 2007 in English and held by 2 WorldCat member libraries worldwide

"This paper presents corrected catch histories, standardized catch rates, and evaluations of the accuracy of federally mandated commercial logbooks for billfishes (Istiophoridae: blue marlin, Makaira nigricans; striped marlin, Tetrapturus audax; shortbill spearfish, T. angustirostris; black marlin, M. indica; and sailfish, Istiophorus platypterus) taken as incidental catch by the Hawaii-based longline fishery. The study (March 1994-February 2004) was conducted because billfish misidentifications in logbooks caused by similarities in body size, shape, and coloration have long represented a major challenge in monitoring this fishery. The objective was to improve understanding of the composition and magnitude of incidental billfish catches."
Use of productivity and susceptibility indices to determine stock vulnerability, with example applications to six U.S. fisheries( Book )

1 edition published in 2009 in English and held by 1 WorldCat member library worldwide

Relative abundance of skipjack and yellowfin in the Moro Gulf (Philippine Region 12) by Keith Bigelow( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

"The objective of this study was to utilize NSAP data to estimate relative abundance or standardized CPUE for tuna species in Region 12 (SOCCSKSARGEN) in southern Mindanao for use in the 2014 WCPFC skipjack and yellowfin assessments. This study produced monthly relative abundance indices for yellowfin tuna in the handline fishery and skipjack and yellowfin tuna in the purse seine fishery. A technical report will be produced that contains a larger scope of additional species and inclusion of the ringnet fishery. Bigeye tuna indices were not incorporated into the WCPFC assessment, as they are non-informative due to relatively low catch levels in the Philippines. Unlike many other purse seine fisheries, bigeye tuna identification problems are negligible in the Philippines due to the reliability of the BFAR NSAP catch composition data from port sampling"--Introduction (page 3)
Standardized CPUE for distant-water fleets targeting South Pacific albacore by Keith Bigelow( )

1 edition published in 2009 in English and held by 1 WorldCat member library worldwide

"Longline catch and effort series represent the principal indices of relative abundance within the south Pacific albacore MULTIFAN-CL assessment. However, there have been temporal changes in the catchability of the distant-water longline fisheries, some of which are associated with changes in the species targeted. For example, since 1975 the entire Japan distant-water fleet and a large portion of the Korea fleet have changed the geographic area fished and the configuration of the longline gear by increasing the number of hooks between floats, in order to target yellowfin and bigeye tuna...The objective of this study was to: 1) incorporate operational data into the CPUE analysis in addition to data provided vessels landing at the canneries (Pago Pago and Levuka), 2) statistically disaggregate albacore and bigeye tuna targeting operations and 3) apply traditional GLMs to the albacore targeted fishery to estimate relative abundance indices for assessment"--Introduction
Cost-earnings study of the American Samoa longline fishery based on vessel operations in 2009 and recent trend of economic performance by Minling Pan( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

"The purpose of this study is to collect cost-earnings information for the longline fishing fleet based in American Samoa. The objectives of the analysis are to examine the economic health of the fleet and assess vessel operations and activities relevant to economic returns to individual vessels and the fleet as a whole. This information is required by the Magnuson-Stevens Fishery Conservation and Management Act to allow fisheries managers to consider potential economic impacts of future regulations. In 2001, O'Malley and Pooley (2002) conducted a similar cost/earnings study of the American Samoa-based longline fishery. Their study found that the majority of vessels were profitable, generating revenues sufficient to meet expenses. This current study serves to update the assessment of the overall fleet's economic performance and to assess how the economic performance of the fleet has changed. This analysis uses both primary and secondary sources of data on fleet operations in 2009 to provide the baseline information needed to support the fishery management. Cost data were collected through in-person interviews during the summer of 2010 (the survey form is presented in the Appendix), while other data were provided by the Western Pacific Fisheries Information Network (WPacFIN), National Marine Fisheries Service (NMFS), and the Pacific Islands Fisheries Science Center (PIFSC). In 2009, 26 boats were active in the American Samoa longline fleet: 1 was Class A (≤ 40 ft), 5 were Class C (50--70 ft), and 20 were Class D (≥ 70 ft). Class A vessels are outboard-enginepowered catamarans, called alias. These boats are generally less than 30 ft in overall length, take 1--3 day trips, have no or limited modern technology, and generally fish less than 350 hooks per set. Fishing by these boats is significantly different from that of the larger vessels"--Introduction. doi:10.7289/V5/AR-PIFSC-H-17-01 (]
Seabird interaction rates in the Hawaii‐based shallow and deep‐set longline fisheries by vessel size as estimated from observer data (2004–2013) by Keith Bigelow( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

"This report provides observed seabird interactions and interaction rates in the Hawaii-based longline fisheries from 2004 to 2013 summarized by calendar year of operation (longline haulback). Seabird regulations initially went into effect in June 2001. Year 2004 was chosen as a start of the analysis as the shallow-set fishery re-opened. Statistics are disaggregated by longline fishery (shallow and deep-set), vessel size (<24 m and >=24 m) and latitude (<23°N and >=23°N). The analysis addresses the SC9 recommendation (para 81(a)), requesting for a comparison of large- and small-vessel interaction rates in order to address the current lack of mitigation by small vessels. The analysis is beneficial in describing interaction rates by fishery, latitude and vessel size"--Page 3
Migration and abundance of bigeye tuna (Thunnus obesus) and other pelagic species, inferred from catch rates and their relation to variations in the ocean environment by Patrick Hyder( Book )

1 edition published in 2009 in English and held by 1 WorldCat member library worldwide

Species composition in the USA purse seine fishery as estimated by logsheets and cannery receipts by Keith Bigelow( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

This paper provides a preliminary analysis on the potential use of cannery receipt data for estimating species composition in the USA western Pacific purse seine fishery. Total tuna catches recorded on logsheets by year were very close (0.5% more in 2014 and 2.8% more in 2015) to those shown by cannery receipts indicating that vessel operators accurately record total catches on daily logsheets. Species composition differed with cannery receipts having a lower percentage of skipjack and higher percentages of both yellowfin and bigeye tuna than reported on logsheets. Cannery data provide catch by species and size categories, and annual trends are illustrated for 2014 and 2015 for size categories of <3 lbs (<1.4 kgs), 3.0-7.5 lbs (1.4-1.8 kgs), 4.0-7.5 lbs (1.8-3.4 kgs), 7.5-20 lbs (3.4-9.1 kgs), and 20 lbs and up (9 or 10 kgs and up). Cannery catches for the USA western Pacific purse seine fleet were compared to SPC-OFP (2016) catch estimates which are conducted with a full species adjustment using observer sampling data corrected for grab sample selection. The SPC-OFP (2016) estimates are lower for skipjack and higher for yellowfin and bigeye tuna. Recommendations are provided to continue analyses with logsheet, observer, cannery, and port sampling data to provide robust estimates of purse catches of key tuna species in the western Pacific. [doi:10.7289/V5/WP-PIFSC-17-005 (]
Environmental effects on swordfish and blue shark catch rates in the US North Pacific longline fishery by Keith Bigelow( Book )

1 edition published in 1999 in English and held by 1 WorldCat member library worldwide

Standardized CPUE for South Pacific albacore by Keith Bigelow( )

1 edition published in 2012 in English and held by 1 WorldCat member library worldwide

"The objective of the present study was to produce one standardized CPUE index per region for vessels targeting south Pacific albacore on a specific trip. Improvements to previous standardizations which included only distant-water fleets include: 1) all logsheet data south of the equator were used from all longline fleets, 2) trips targeting south Pacific albacore were identified by three alternative types of cluster analysis and 3) the GLMs considered a negative binomial distribution instead of the lognormal distribution"
Seabird interaction rates estimated from observer data (2004-2011) in the Hawaii-based shallow and deep-set longline fisheries by Keith Bigelow( )

1 edition published in 2011 in English and held by 1 WorldCat member library worldwide

"Seabird interactions have occurred in both the shallow (swordfish targeting) and deep-set (tuna targeting) U.S longline fisheries that are based in Hawaii. Incidental seabird interactions are documented by fishery observers from the Pacific Islands Regional Observer Program...Annual fleet-wide estimates are reported in Part 1 of the U.S. Annual Report of the WCPFC (2010) by raising the number of observed interactions by a factor determined according to the design of the observer sampling program. The Pacific Islands Regional Office (PIRO) of the National Marine Fisheries Service (NMFS) provides additional seabird information as an annual report on Seabird Interactions and Mitigation Efforts in the Hawaii Longline Fisheries. The most recent summary (NMFS 2010) describes observed and estimated total numbers of interactions with Laysan (Phoebastria immutabilis) and blackfooted (P. nigripes) albatrosses and other seabird species, notes the levels of observer coverage on Hawaii-based longline vessels, describes sightings of short-tailed albatrosses and any interaction, i.e., hooking or entanglement in fishing gear, within the Hawaiibased pelagic longline fisheries"--Page 1
Student demographic trends in Seattle and adjacent region by John Fotheringham( Book )

1 edition published in 1990 in English and held by 1 WorldCat member library worldwide

Length-weight relationships for 73 species and species groups as reported in the 2011-2013 national bycatch reports for pelagic longline fisheries in Hawaii and American Samoa by Daniel S Curran( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

"This report provides summaries of length-weight relationships for pelagic species reported in the Hawaii and American Samoa based longline fisheries. NOAA periodically produces a National Bycatch Report (NBR) estimating total weight by species or species group for all species taken by these fisheries. Past reports have utilized both unpublished and published estimates of lengthweight relationships to apply an average weight for an individual of each species to the total number reported in a fishery. The data sources used to generate the length-weight regression coefficients necessary to convert average length of a species (from observer collected length frequency data) have not been well documented. This report provides documentation on the data sources, sample sizes, size ranges, and assumptions used to generate the length-to-weight conversion equations for each species/species group as reported in the NBR report for 2011-- 2013 catch estimates. This report does not reflect any new regression analyses, it is an attempt at documentation of where the regression coefficients used in the NBR summaries originated"--Introduction [doi:10.7289/V5CF9N42 (]
Evaluation of longline mitigation to reduce catches of North Pacific striped marlin in the Hawaii-based tuna fishery by Keith Bigelow( )

1 edition published in 2010 in English and held by 1 WorldCat member library worldwide

"Striped marlin in the North Pacific are primarily harvested in longline fisheries targeting species such as tunas (Thunnus spp.) and swordfish (Xiphias gladius). Annual catches have declcined from ~17,000 mt in the early 1960s to ~3,000 mt in 2006 (Figure 1). Striped marlin are primarily harvested by longline fisheries from Japan in the northwest Pacific and the USA in the central Pacific with smaller catches from Korea and Chinese-Taipei longline fleets and are also targeted in coastal fisheries off Japan and ChineseTaipei and support valuable recreational fisheries off Australia, New Zealand, Mexico and the United States...Given the high estimated fishing mortality, the objectives of this study were to conduct analyses of potential longline catch reductions of N. Pacific striped marlin while maintaining target bigeye tuna catches. Longline mitigation was based on modification of longline gear and spatially closed areas. The analysis was conducted on the Hawaii-based longline fishery which comprises ~10% of the total N. Pacific catch of striped marlin since 2000 and is well suited to analyses of longline mitigation because detailed operational and catch data have been gathered by the Pacific Islands Regional Observer Program (PIROP) since 1994. The Hawaii-based pelagic longline fishery is composed of two sectors which target bigeye tuna (Thunnus obesus) with deep gear and swordfish (Xiphius gladius) with shallow gear. The median depth of the deepest hook on 266 deep sets was 248 m, whereas that on 333 shallow sets was 60 m (Bigelow et al. 2006). The study considered the deep set fishery due to larger striped marlin catches and potentially greater mitigation options as deep gear fishes at a greater range of depth and habitat than
Relative abundance of yellowfin tuna for the purse seine and handline fisheries operating in the Philippines Moro Gulf (Region 12) and High Seas Pocket #1 by Keith Bigelow( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Port sampling data were used to estimate effort, catch, CPUE, standardized CPUE, and species composition from the purse seine fishery operating in the southern Philippines (Region 12, SOCCSKSARGEN) and High Seas Pocket #1 and the handline fishery operating in Region 12. A quarterly standardized CPUE index was produced for the purse seine (2005 to 2016) and handline (2004 to 2016) fishery for use in the 2017 WCPFC yellowfin tuna assessment. Standardized CPUE was estimated using Generalized Linear Models (GLMs) and removing effects due to vessel and area (fishing ground). The index for the 2014 assessment used a GLM that predicted monthly CPUE with year, month, and vessel effects. The current index predicted quarterly CPUE with a YR:QTR, Area (fishing ground) and Vessel effects. A combined YR:QTR effect was estimated to be consistent with other fishery CPUE standardization methods used in the assessment. There were 12 Area designations in the database; however, Area was relatively non-informative in the model as fishing trips were dominated by a few areas
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English (22)