Peter Williams

Peter Williams
The Pacific Community | SPC · Oceanic Fisheries Programme

Master of Technology

About

61
Publications
24,794
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899
Citations
Citations since 2017
23 Research Items
508 Citations
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2017201820192020202120222023020406080
2017201820192020202120222023020406080

Publications

Publications (61)
Technical Report
Full-text available
The tuna fisheries assessment report (commonly referred to as the "TFAR") provides current information on the tuna fisheries of the western and central Pacific Ocean and the fish stocks (mainly tuna) that are impacted by them. The information provided in this report is summary in nature, but a list of references (mostly accessible via the internet)...
Conference Paper
Full-text available
This paper provides a broad description of the major fisheries in the WCPFC Statistical Area (WCP-CA) highlighting activities during the most recent calendar year (2021) and covering the most recent summary of catch estimates by gear and species. The provisional total WCP-CA tuna catch for 2021 was estimated at 2,493,571 mt, around 210,000 mt lower...
Technical Report
Full-text available
The tuna fisheries in the western and central Pacific Ocean (WCPO), encompassed by the Western and Central Pacific Fisheries Commission Convention Area (WCPFC-CA), are diverse, ranging from small-scale, artisanal operations in the coastal waters of Pacific states, to large-scale, industrial purse seine, pole-and-line and longline operations in the...
Article
Full-text available
Climate-driven redistribution of tuna threatens to disrupt the economies of Pacific Small Island Developing States (SIDS) and sustainable management of the world’s largest tuna fishery. Here we show that by 2050, under a high greenhouse gas emissions scenario (RCP 8.5), the total biomass of three tuna species in the waters of ten Pacific SIDS could...
Chapter
Full-text available
The eight Pacific Island countries that are the Parties to the Nauru Agreement (Federated States of Micronesia, Kiribati, Marshall Islands, Nauru, Palau, Papua New Guinea, Solomon Islands and Tuvalu), together with Tokelau, manage the largest tuna fishery in the world. As a group, these Small Island Developing States have developed a system to mana...
Technical Report
Full-text available
This report focuses on the primary tuna stocks targeted by the main WCPO industrial fisheries - skipjack (Katsuwonus pelamis), yellowfin (Thunnus albacares), bigeye (T. obesus) and South Pacific albacore tuna (T. alalunga). The report is divided into three parts: the first section provides an overview of the fishery, with emphasis on developments...
Conference Paper
Full-text available
Provides a description of the major tuna fisheries in the WCPFC Statistical Area highlighting activities during the most recent calendar year (2019) and covering the most recent summary of catch estimates by gear and species, including economic conditions.
Chapter
Projected population growth in Pacific Island countries, combined with their narrow resource base, declines in net food production per capita and growing reliance on imported foods will increase food insecurity. We examined whether policies requiring retention of edible, non-target catches by the Western and Central Pacific purse seine fishery coul...
Conference Paper
Full-text available
This report summarises progress on the Project 60 work plan as endorsed by the 2018 Scientific Committee. The main activities undertaken since SC14 were: a paired grab/spill trip, conducted on a Solomon Island flagged purse seiner in March 2019; construction of beta response models of species compositions; and, estimation of species-specific catch...
Conference Paper
Full-text available
The Western and Central Pacific Fisheries Commission (WCPFC) has a responsibility to assess the impact of fishing on non-target species. In this report, we estimate the bycatch of the large-scale purse seine fishery operating primarily in tropical waters of the WCPFC Area east of 140°E. These large vessels, typically greater than 500 tonnes carryin...
Article
Full-text available
Electronic monitoring (EM) consisting of on-board video imagery and on-shore analysis, offers an alternative or supplement to at-sea observer programs in commercial fisheries. In the western and central Pacific Ocean (WCPO), where observer coverage in most tuna longline fisheries has historically been <5%, the advent of EM has been perceived as a t...
Conference Paper
Full-text available
The Western and Central Pacific Fisheries Commission (WCPFC) has a responsibility to assess the impact of fishing on non-target species. In this report, we estimate the bycatch of the large-scale purse seine fishery operating primarily in tropical waters of the WCPFC Area east of 140°E. These large vessels, typically greater than 500 tonnes carryin...
Conference Paper
Full-text available
WCPFC has responsibilities in: assessing the impact of fishing and environmental factors on non-target species and species belonging to the same ecosystem or dependent upon or associated with the target stocks; to minimize catch of non-target species; to protect biodiversity; and, to adopt, when necessary, conservation and management measures for n...
Preprint
Full-text available
Long-term collection of data and samples appears critical to contribute to our understanding of the impacts of fisheries and climate change on the marine ecosystems, and for the implementation of management measures for sustainable use of the resources. In the western and central Pacific Ocean, the source of 50% of the worldwide tuna catches, sever...
Preprint
Full-text available
Long-term collection of data and samples appears critical to contribute to our understanding of the impacts of fisheries and climate change on the marine ecosystems, and for the implementation of management measures for sustainable use of the resources. In the western and central Pacific Ocean, the source of 50% of the worldwide tuna catches, sever...
Article
Full-text available
Projected population growth in Pacific Island countries, combined with their narrow resource base, declines in net food production per capita and growing reliance on imported foods, will increase their food insecurity. We examined whether policies requiring retention of edible, non-target catches by the Western and Central Pacific purse seine fishe...
Article
The whale shark (Rhincodon typus, Smith, 1828) is a migratory species (classed as Vulnerable by the IUCN) with genetic and circumstantial evidence for inter-ocean connectivity. Given this migratory behaviour, population-wide occurrence trends can only be contextualized by examining the synchrony in occurrence patterns among locations where they occ...
Conference Paper
Full-text available
http://www.wcpfc.int/doc/MI-WP-01/Analysis-implementation-and-effectiveness-key-management-measures-tropical-tunas
Article
Full-text available
Climate change presents an emerging challenge to the sustainable management of tuna fisheries, and robust information is essential to ensure future sustainability. Climate and harvest affect tuna stocks, populations of non-target, dependent species and the ecosystem. To provide relevant advice we need an improved understanding of oceanic ecosystems...
Article
Full-text available
Sustainability of living resource exploitation relies on an ecosystem management approach. Within tropical tuna purse seine fisheries using fish aggregating devices (FADs), such an approach incorporates the reduction of bycatch, in particular vulnerable species such as elasmobranchs. The levels of total bycatch (in mass) from fishing operations usi...
Article
Full-text available
Data on the depth and temperature preferences of bigeye tuna (Thunnus obesus) derived from archival tags were integrated with data on the spatial and temporal distribution of catches from an eastern Australian longline fishery to investigate the relationship between bigeye tuna behaviour and the fishery. Tagged individuals demonstrated variability...
Article
Full-text available
The Secretariat of the Pacific Community (SPC) undertook a large-scale tagging program on tropical tunas from 1989 to 1992. While bigeye tuna were not the focus of this program, more than 8,000 bigeye were tagged and released, with more than 1,000 returns currently received, some up to 12 years after release. In this paper we describe various chara...
Article
Full-text available
Migration and habitat preferences of bigeye tuna, Thunnus obesus, on the east coast of Australia — a project using archival and conventional tags to determine key uncertainties in the species stock structure, movement dynamics and CPUE trends Migration and habitat preferences of bigeye tuna, Thunnus obesus, on the east coast of Australia – a projec...
Article
Full-text available
Meetings of Multilateral High-level Conference on the Conservation and Management of Highly Migratory Fish Stocks (MHLC) in the western and central Pacific Ocean (WCPO) held to date have made significant progress towards the establishment of a Convention for the highly migratory fish stocks in the WCPO. Article 10(3) of the draft Convention infers...
Article
1. INTRODUCTION Bigeye tuna (Thunnns obesus) occur in the western Pacific from approximately 45° N to 45° S, and are captured by a variety of gears, including longline (as adults), purse seine and pole-and-line. They are however primarily taken by longline gear, for which they are a major target species. Smaller but still substantial amounts are ta...
Article
One of the key components to CMM2008-01 adopted at WCPFC-5 in Busan in December 2008, was a prohibition on setting on FADs for a period in 2009, 2010, and 2011. The application of FAD restrictions in other RFMO's has suffered from problems of compliance and monitoring. Here we examined operational level purse seine catch and effort data for almost...

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