Global Fisheries Science Documents Human Impacts on Oceans: The <i>Sea Around Us</i> Serves Civil Society in the Twenty-First Century

Zeller, Dirk; Palomares, Maria Lourdes D.; Pauly, Daniel

doi:10.1146/annurev-marine-030322-113814

Cited by 15 publications

(8 citation statements)

References 60 publications

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“…Systematically distinguishing between pelagic and benthic fishing and increasing the precision of the spatial information associated with catch data would constitute important steps forward to improve our understanding of the depths targeted by fisheries. Our results underestimate fishing pressure overlying euphotic to rariphotic depths because the GFW database only documents vessels with automatic identification systems, which does not capture most small-scale fisheries, especially in the Caribbean, South-West Pacific, and Indian Ocean where catches are systematically underreported 23 , 25 .…”

Section: Resultsmentioning

confidence: 76%

3D ocean assessments reveal that fisheries reach deep but marine protection remains shallow

Jacquemont,

Loiseau,

Tornabene

et al. 2024

Nat Commun

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The wave of new global conservation targets, the conclusion of the High Seas Treaty negotiations, and the expansion of extractive use into the deep sea call for a paradigm shift in ocean conservation. The current reductionist 2D representation of the ocean to set targets and measure impacts will fail at achieving effective biodiversity conservation. Here, we develop a framework that overlays depth realms onto marine ecoregions to conduct the first three-dimensional spatial analysis of global marine conservation achievements and fisheries footprint. Our novel approach reveals conservation gaps of mesophotic, rariphotic, and abyssal depths and an underrepresentation of high protection levels across all depths. In contrast, the 3D footprint of fisheries covers all depths, with benthic fishing occurring down to the lower bathyal and mesopelagic fishing peaking in areas overlying abyssal depths. Additionally, conservation efforts are biased towards areas where the lowest fishing pressures occur, compromising the effectiveness of the marine conservation network. These spatial mismatches emphasize the need to shift towards 3D thinking to achieve ocean sustainability.

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Section: Resultsmentioning

confidence: 76%

3D ocean assessments reveal that fisheries reach deep but marine protection remains shallow

Jacquemont,

Loiseau,

Tornabene

et al. 2024

Nat Commun

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“…The present study synthesises the detailed domestic catch reconstructions undertaken for the EEZs of every Indian Ocean rim country (Supplementary Table S1) plus the foreign fishing data (distant-water fleets) as allocated to Indian Ocean EEZs and high-seas areas (Zeller et al 2016(Zeller et al , 2023. This contribution comprises both domestic waters, defined as the waters within the EEZs of individual countries (Fig.…”

Section: Catch Time-seriesmentioning

confidence: 99%

“…Dark blue denotes the exclusive economic zones (EEZ) of Indian Ocean rim countries that are within the Indian Ocean basin. EEZ and FAO area boundaries taken from the Sea Around Us (Zeller et al 2023). Scale 1:73 000 000. economic cash revenues generated by permitting foreign fishing interests direct, reflagged or joint-venture access to the exclusive economic zones (EEZs) of countries represents a very strong incentive for national fisheries policy (Sheppard 2018;Belhabib et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Here, we present a synthesis of marine fisheries data and analyses for the Indian Ocean basin from 1950 to 2018, building on fisheries research and data activities by the Sea Around Us and Sea Around Us -Indian Ocean (Pauly 2007;Zeller et al 2023), with emphasis on the reconstructed catch and fishing-effort history, as well as resulting catch-per-unit-effort (CPUE) indices. We recognise that reconstructed data may contain errors and may have higher uncertainties than do reported data (Pauly and Zeller 2017;Zeller and Pauly 2019), and we welcome collaborations and opportunities for engagements to correct any potential errors to improve the underlying data.…”

Section: Introductionmentioning

confidence: 99%

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Trends in Indian Ocean marine fisheries since 1950: synthesis of reconstructed catch and effort data

et al. 2023

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Context Contrary to other ocean basins, Indian Ocean catches have increased consistently since 1950, although reported data are known to be incomplete. Fish is a crucial food source in the Indian Ocean; however, ineffective management often empowers over-exploitation. Aims We synthesised and reviewed Indian Ocean reconstructed catch and effort data by fishing sector and fishing country at the ocean-basin scale. Methods We aggregated reported and reconstructed unreported catch and effort data for the Indian Ocean and derived catch-per-unit-effort (CPUE) time-series by sector. Key results Indian Ocean rim country catches dominated in the Indian Ocean. Small-scale catches in the Indian Ocean have grown continuously by over 300% from 1.9 × 106 tonnes (Mg) year−1 in 1950 to 6.5 × 106 tonnes year−1 by 2018. By contrast, total industrial catches from the Indian Ocean have reached a plateau at ~8.5 × 106 tonnes year−1 since the late 1990s, after having steadily risen from very low levels in the early 1960s. Unreported catches declined from 45 to 25% of total catches. Total fishing effort, driven by the industrial sector, has increased 30-fold since 1950 from 0.4 × 109 to 11 × 109 kW-days by 2010, whereas CPUE has declined 78%, with steeper declines in the small-scale (>80% since 1950) than in the industrial sector (65% from its 1981 peak). Conclusions The different sectoral patterns in the Indian Ocean compared with other ocean basins are likely to be due to the region’s high dependence on small-scale fisheries and the later onset but swift growth of industrial fishing. The declining CPUE suggests strong decreases in stock biomass caused by strongly increasing fishing effort, especially in the industrial sector. Implications Indian Ocean countries should prioritise lower-impact well-managed domestic small-scale fisheries to maximise long-term, sustainable nutrient supply for local livelihoods.

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“…Prices for FM/FO have risen as competition for both resources has increased while availability has generally weakened. Reduced catches of forage fish, which provide the raw material for the production of FM/FO, have emerged due to over-fishing, natural and climate-induced effects (e.g., El Niño-Southern Oscillation, the Madden-Julian Oscillation), and the increased consumption of forage Fishes 2024, 9, 37 2 of 16 fish resources by society [7][8][9][10]. Another concern that has forced the aquafeed sector to reduce its reliance on FM/FO is public awareness of the negative direct and indirect effects of forage fisheries on marine and coastal ecosystems [11].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Marine Resource-Free Diets on Quality Attributes of Atlantic Salmon

McLean,

Campbell,

Kuhn

et al. 2024

Fishes

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The influence of feeding Atlantic salmon for 90 days on diets that excluded fishmeal (FM) and fish oil (FO) was examined for influence on various quality traits. In addition, the effect of adding krill meal (KM; 0%, 2.5%, and 5%), as a putative feed palatant was also examined. Total replacement of FM/FO had a limited effect on production characteristics, affecting percentage yields of headed and gutted control fish and their standard length (p < 0.05). Variances between dietary groups were observed for pigmentation, and plant protein-based KM-free-fed fish returned deeper hues across their belly, NQC (Norwegian Quality Cut), and back portions (p < 0.03). No differences were measured for relative fin condition. δ13C and δ15N concentrations were lower and higher, respectively (p < 0.05) for fish fed the FM/FO-based diet. δ13C:δ15N likewise differed between treatments with FM/FO-fed salmon expressing higher ratios. Fillet mechanical characteristics varied with fish fed on animal protein-based diets, without KM expressing higher springiness and resilience (p < 0.05). Fish fed plant-based diets were generally preferred by younger taste testers. The results from this trial illustrate that FM/FO can be completely removed from salmon diets without problematic effects on quality and palatability attributes.

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Global Fisheries Science Documents Human Impacts on Oceans: The Sea Around Us Serves Civil Society in the Twenty-First Century

Cited by 15 publications

References 60 publications

3D ocean assessments reveal that fisheries reach deep but marine protection remains shallow

3D ocean assessments reveal that fisheries reach deep but marine protection remains shallow

Trends in Indian Ocean marine fisheries since 1950: synthesis of reconstructed catch and effort data

The Impact of Marine Resource-Free Diets on Quality Attributes of Atlantic Salmon

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