Fisheries in Chinese seas: What can we learn from controversial official fisheries statistics?

Kang, Bin; Liu, Min; Huang, Xiaoxia; Li, Jun; Yan, Yunrong; Han, Ching-Chih; Chen, Shaobo

doi:10.1007/s11160-018-9518-1

Cited by 47 publications

(38 citation statements)

References 14 publications

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“…However, this stock has not been assessed due to lack of inclusion in official fishery statistics for China Mainland and Taiwan Province. The Spadenose shark may be overfished in the coastal and offshore fisheries and overexploited on the China Mainland (Kang et al, 2018) and Taiwan Province (Chen et al, 2018;Liao et al, 2019). Correspondingly, this stock has been assessed to be grossly overfished with an LBB estimated depletion rate of 85% (B/B 0 = 0.15) being reasonable.…”

Section: Discussionmentioning

confidence: 99%

Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method

Chen

Tian

et al. 2020

Front. Mar. Sci.

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Five shark stocks in the waters around Taiwan were assessed using the LBB method, addressing the present gap. Among them, only one filter-feeding shark, megamouth shark Megachasma pelagios, qualified as having a healthy status. Of the remaining filter-feeding shark, whale shark Rhincodon typus, was seriously overexploited, possibly even collapsed, spadenose shark Scoliodon macrorhynchos, and other two large sharks (dusky shark Carcharhinus obscurus and silky shark Carcharhinus falciformis) were also overexploited. These stock status estimates for the five shark species using the LBB method were consistent with international agreements such as IUCN, CITES and CMS.

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Section: Discussionmentioning

confidence: 99%

Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method

Chen

Tian

et al. 2020

Front. Mar. Sci.

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“…In recent years, the dramatic decrease in coastal fish resources and significant changes in catch composition in China caused by continuously increasing fishing pressure have attracted a lot of concerns [12,41,42]. For instance, a drastic decline was reported in CPUE in 2011 down to 0.86% of 1959 in the Bohai Sea [12,43] and to 53% of 1991 in the Yellow Sea and the East China Sea in 2000 [44].…”

Section: Discussionmentioning

confidence: 99%

Sustainable Exploitation of Dominant Fishes in the Largest Estuary in Southeastern China

Wang

et al. 2020

Water

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Globally, marine fisheries have declined under multiple stresses including overfishing, climate change, and habitat degradation. The Min River Estuary, as the largest estuary in southeastern China, has confronted this situation over recent decades. In this study, the dominant species of fish stocks in the Min River Estuary, including Coilia mystus, Cynoglossus abbreviates, Collichthys lucidus, Amblychaeturichthys hexanema, Polydactylus sextarius, Harpodon nehereus, and Secutor ruconius, were evaluated by the length-based Bayesian biomass estimator method (LBB). Outcomes could be grouped into three categories as healthy, showing the lowest exploitation rate (E: 0.31–0.43) and highest relative biomass (B/Bmsy: 1.30–1.90), including S. ruconius, C. mystus, and H. nehereus; overfished, with a medium E (0.50–0.58) and B/Bmsy (0.68–0.79), including A. hexanema and C. abbreviates; and collapsed, with the highest E (0.89–0.92) and lowest B/Bmsy (0.03–0.21), including C. lucidus and P. sextarius. Corresponding imperative countermeasures such as using larger-sized mesh gears and reducing fishing intensity should be deployed according to the current status of each species for sustainable fishery exploitation and fish conservation.

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“…Therefore, the reliability and accuracy of this method may be questioned. However, this concern is irrelevant to this study for two main reasons: (a) Chinese fishing effort increased dramatically in the 1980s and 1990s with more efficient fishing rates due to technological advances and has remained stable since the 2000s (Kang et al, 2018), and hence, the impacts of fishing effort on our results are almost negligible; and (b) most importantly, our research focuses on the long-term variability in the YS herring population dynamics rather than on absolute catches in some fixed years. Furthermore, to minimize the uncertainty caused by this method, ensuring the reliability and effectiveness of the results.…”

Section: Validity Of Historical Records As An Indicator Of the Abunmentioning

confidence: 99%

Long‐term variation in the abundance of Pacific herring (Clupea pallasii) from the Yellow Sea in the western North Pacific and its relation to climate over the past 590 years

Yang

Tang

et al. 2019

Fisheries Oceanography

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A qualitative understanding of the long‐term variation in the population dynamics of Yellow Sea (YS) herring is particularly important for clarifying the evolutionary processes and driving mechanisms of the YS large marine ecosystem. Unfortunately, because of a lack of long‐term, continuous, and simultaneous monitoring data, the specific driving processes and mechanisms of climate effects on the population dynamics of YS herring remain largely unknown. In response to this scientific issue, we preliminarily propose the idea of reconstructing long‐term changes in YS herring abundance over the past 590 years (AD 1417–2004) based on historical documents and attempt to explore the impacts of climate on the population. Our results show that YS herring abundance maintained at a relatively high level from AD 1417 to 1870 (during the Little Ice Age); in contrast, the population declined significantly from AD 1870 to 2004 at different rates. In addition, we also found that there were strong relationships between the population abundance of YS herring and the Pacific decadal oscillation (PDO) and drought/flood cycles. We suggest that the fluctuations in YS herring abundance may be influenced by ocean–climatic circulation shifts throughout the North Pacific, especially the PDO.

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Fisheries in Chinese seas: What can we learn from controversial official fisheries statistics?

Cited by 47 publications

References 14 publications

Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method

Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method

Sustainable Exploitation of Dominant Fishes in the Largest Estuary in Southeastern China

Long‐term variation in the abundance of Pacific herring (Clupea pallasii) from the Yellow Sea in the western North Pacific and its relation to climate over the past 590 years

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