Biodiversity in the bycatch community of Chinese tuna longline fisheries in the Pacific Ocean

Wang, Jiaqi; Gao, Xiang; Xu, Liling; Dai, Libin; Chen, Jessica; Tian, Shu; Chen, Yong

doi:10.1016/j.gecco.2020.e01276

Cited by 3 publications

(4 citation statements)

References 32 publications

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“…The investigated trap records contain species bycatch data in amounts that allow detection of significant and ecologically—relevant temporal and spatial variations in biological properties. This finding is consistent with earlier applications of bycatch data from fisheries for other target species for studying their ecologies and the biodiversity of communities (Ferretti et al, 2008; Wang et al, 2020). However, what makes these data unusual compared with many earlier bycatch studies is their origin from a relatively early time period compared with the timing of intensification of fishing, and their long duration and higher temporal and biological resolution (individual‐level size information).…”

Section: Discussionsupporting

confidence: 91%

“…The investigated trap records contain species bycatch data in amounts that allow detection of significant and ecologicallyrelevant temporal and spatial variations in biological properties. This finding is consistent with earlier applications of bycatch data from fisheries for other target species for studying their ecologies and the biodiversity of communities (Ferretti et al, 2008;Wang et al, 2020).…”

Section: Benefits and Limitations Of Trap Data As Indicators Of Statu...supporting

confidence: 92%

“…Here we investigate the temporal-spatial variability in the bycatch data, which we have recovered. We hypothesise that, as with some other studies employing bycatch data to investigate marine population ecology and biodiversity (Ferretti et al, 2008;McClenachan et al, 2012;Wang et al, 2020), these data can potentially provide new knowledge of the long-term dynamics of the Italian mainland) through which many swordfish migrate towards the spawning area and where historical swordfish harpoon fisheries operate (Romeo et al, 2015b) ecology of this species in the Mediterranean Sea, including whether variations in time and space are random or contain significant patterns. New long data sets such as these could provide new baselines for analyses of past and future effects of human impacts such as exploitation and climate variability/change on swordfish ecology in this region.…”

mentioning

confidence: 58%

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Neglected fishery data sources as indicators of pre‐industrial ecological properties of Mediterranean swordfish (Xiphias gladius, Xiphiidae)

et al. 2022

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Fish population dynamics are driven by variations and trends in multiple forcings at multiple time scales. The forcings include natural and anthropogenic processes, including ocean-climate phenomena, exploitation, eutrophication, and species interactions (e.g., predation, competition) (FAO, 2018a(FAO, , 2018bIPCC, 2019). Cumulatively, these processes drive variations in physiological and demographic rates, productivity, abundance, distribution, and ultimately the potential yields from commercial fisheries.

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Section: Discussionsupporting

confidence: 91%

Section: Benefits and Limitations Of Trap Data As Indicators Of Statu...supporting

confidence: 92%

mentioning

confidence: 58%

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Neglected fishery data sources as indicators of pre‐industrial ecological properties of Mediterranean swordfish (Xiphias gladius, Xiphiidae)

et al. 2022

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“…Identifying biodiversity hotspots and predicting their habitat preferences is very useful for ocean monitoring and conservation (Wang et al ., 2020). The current study elucidates the spatio-temporal diversity ichthyofaunal associated with the coral reef ecosystem of GoM.…”

Section: Discussionmentioning

confidence: 99%

Ichthyofaunal Diversity from Longline Catches in the Gulf of Mannar (GoM), Southeast Coast of India

Ravikumar,

Neethirajan,

Chandran

et al. 2024

Journal of Coastal Research

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Environmental Characteristics Associated with the Presence of the Pelagic Stingray (Pteroplatytrygon violacea) in the Pacific High Sea

Wang

Gao

et al. 2023

Fishes

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The pelagic stingray (Pteroplatytrygon violacea), perhaps the only stingray to inhabit open ocean waters, is highly interactive with longline and purse seine fisheries. The threat to P. violacea posed by high bycatch mortality has received widespread attention. To date, the environmental preference of P. violacea, which is important in designing conservation and management measures, has not been well studied. Based on data collected during a 2016–2019 survey in the Pacific Ocean by national observers of tuna longline fisheries, the relationship between the presence of P. violacea and spatiotemporal and environmental variables was first analyzed using the Generalized Additive Model. The results showed that geographic location (latitude and longitude) was the most influential variable. Monthly, P. violacea is frequently present in the Pacific high sea from December to May. The El Niño–Southern Oscillation had a significant impact on the presence of P. violacea in the Pacific high sea, with both the cold (Ocean Nino Index <−0.5) and warm (Ocean Nino Index >1) phases leading to a decrease in its presence. Regarding the environmental factors, we found that high presence was associated with low salinity (33.0~34.5 psu), a relatively high concentration of chlorophyll (0.2–0.35 mg/m3), and warm water (>20 °C). P. violacea was most likely observed in the waters offshore, closer to seamounts, and with water depths between 4000 and 5000 m. Four areas, including those east of the Solomon Islands and east of Kiribati, areas west of the Galapagos Islands, and areas near the coastal upwelling of northern Peru, related to upwelling systems or seamounts, were identified as the potential key habitats of P. violacea. Predicted distribution maps showed a significant seasonal variation in the presence of P. violacea. Moreover, the yearly change in the presence of P. violacea in the Pacific high sea indicated a possible decreasing trend in recent years. The information first provided here is essential for developing conservation and management measures for P. violacea to prevent the unavoidable ecological consequences of bycatch or other anthropogenic factors.

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Biodiversity in the bycatch community of Chinese tuna longline fisheries in the Pacific Ocean

Cited by 3 publications

References 32 publications

Neglected fishery data sources as indicators of pre‐industrial ecological properties of Mediterranean swordfish (Xiphias gladius, Xiphiidae)

Neglected fishery data sources as indicators of pre‐industrial ecological properties of Mediterranean swordfish (Xiphias gladius, Xiphiidae)

Ichthyofaunal Diversity from Longline Catches in the Gulf of Mannar (GoM), Southeast Coast of India

Environmental Characteristics Associated with the Presence of the Pelagic Stingray (Pteroplatytrygon violacea) in the Pacific High Sea

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