Variability of coastal cephalopods in overexploited China Seas under climate change with implications on fisheries management

Pang, Yumeng; Tian, Yongjun; Fu, Caihong; Wang, Bin; Li, Jianchao; Ren, Yiping; Wu, Rong

doi:10.1016/j.fishres.2018.07.004

Cited by 59 publications

(48 citation statements)

References 48 publications

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“…Moreover, regions characterised by an important temperature variability (e.g. eastern North Sea, Kattegat and the Gulf of Gabès) may be less suitable as cephalopods are highly sensitive to temperature (ectotherms), especially during their embryonic and paralarvae stages, impacting their recruitment success [5][6][7]10,22 .…”

Section: Discussionmentioning

confidence: 99%

“…spawning season, recruitment) in temperate seas (e.g. in the North and Yellow seas) [20][21][22] . According to these observed distributional and behavioural changes, recent predictions highlighted the potential capacity of cephalopods to extent their distribution towards the pole, suggesting a future range expansion of these species [23][24][25] .…”

Section: Alexandre Schickele * Patrice Francour and Virginie Raybaudmentioning

confidence: 99%

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European cephalopods distribution under climate-change scenarios

Schickele

Francour

Raybaud

2021

Sci Rep

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In a context of increasing anthropogenic pressure, projecting species potential distributional shifts is of major importance for the sustainable exploitation of marine species. Despite their major economical (i.e. important fisheries) and ecological (i.e. central position in food-webs) importance, cephalopods literature rarely addresses an explicit understanding of their current distribution and the potential effect that climate change may induce in the following decades. In this study, we focus on three largely harvested and common cephalopod species in Europe: Octopus vulgaris, Sepia officinalis and Loligo vulgaris. Using a recently improved species ensemble modelling framework coupled with five atmosphere–ocean general circulation models, we modelled their contemporary and potential future distributional range over the twenty-first century. Independently of global warming scenarios, we observed a decreasing in the suitability of environmental conditions in the Mediterranean Sea and the Bay of Biscay. Conversely, we projected a rapidly increasing environmental suitability in the North, Norwegian and Baltic Seas for all species. This study is a first broad scale assessment and identification of the geographical areas, fisheries and ecosystems impacted by climate-induced changes in cephalopods distributional range.

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Section: Discussionmentioning

confidence: 99%

Section: Alexandre Schickele * Patrice Francour and Virginie Raybaudmentioning

confidence: 99%

European cephalopods distribution under climate-change scenarios

Schickele

Francour

Raybaud

2021

Sci Rep

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“…Both catch and biomass data for the two stocks of the 14 species were compiled to assess effects from both fishing and climate variability (Table 1). Catch time‐series data are based on Chinese Fishery Statistical Yearbook, Annual Report of Catch Statistics on Fishery and Aquaculture of Japan, Stocks Assessment Reports of Japan, and torchlight fishing vessel in Taiwan (Ministry of Agriculture and Rural Affairs, 1970–2017; Fisheries Agency & Fisheries Research Agency, 2017; Pang et al., 2018). Biomass time‐series data, including estimated resource abundance or catch per unit effort (CPUE) that serve as indices of biomass, are collected from Stocks Assessment Reports of Japan (Fisheries Agency & Fisheries Research Agency, 2017).…”

Section: Methodsmentioning

confidence: 99%

Climate‐induced nonlinearity in pelagic communities and non‐stationary relationships with physical drivers in the Kuroshio ecosystem

Tian

et al. 2020

Fish and Fisheries

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Climate-induced nonlinearity in biological variability and non-stationary relationships with physical drivers are crucial to understand responses of marine organisms to climate variability. These phenomena have raised concerns in the northeastern North Pacific, but are out of the spotlight in the northwestern North Pacific in spite of potential implications for this productive system under increased climate variability. Pelagic communities in the Kuroshio ecosystem have both ecological and economic importance. However, patterns of climate-induced nonlinearity in pelagic communities are not well understood, and existence of non-stationarity in their relationships with physical drivers remains obscure. Here, we compile large numbers of climatic, oceanic and biological long-term time-series data and employ diverse statistical techniques to reveal such climate-induced nonlinearity and non-stationarity. Results show that pelagic communities in the Tsushima and Pacific areas (major areas in the Kuroshio ecosystem) had regime shifts in the late 1990s and late 1980s, respectively. Winter sea surface temperatures in the Kuroshio Current path and in the eastern part of East China Sea, which are respectively affected by the Kuroshio Current and Siberian High, correlate with dominant variability patterns in their pelagic communities. Furthermore, non-stationarity was identified with threshold years in the 1990s in the Tsushima area and in the 1980s in the Pacific area as a possible result of the declined variances in the Siberian High and Aleutian Low, respectively. Our findings provide insights on spatial differentiation of climate-induced nonlinearity and nonstationarity, which are valuable for the management of pelagic communities in the northwestern North Pacific under changing climatic conditions. K E Y W O R D S climate variability, ecological threshold, Kuroshio Current, non-stationary relationship, pelagic species, regime shift 7 3.4 Non-stationarity in community-environment relationships 7 4 DISCUSSION 9 4.1 Similarity and difference between the variability patterns 9 4.2 SST effects on pelagic communities 11 4.3 Climate effects on the SST fields 11 4.4 Climate-induced non-stationarity and its implications for fisheries management 12 ACKNOWLEDGEMENTS 13

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“…Fisheries for cephalopods have expanded over many decades, perhaps in response to their rapid proliferation due to favorable changes in environmental conditions (Rodhouse et al, 2014;Doubleday et al, 2016). Catches of traditionally sought fish have decreased dramatically worldwide in the past few decades, while catches of cephalopods have increased substantially because of their rapid growth, short life span, high turnover rate, and strong phenotypic plasticity (Pang et al, 2018). There is increasing evidence that spatial distribution patterns of marine species are as important as long-term fluctuations in their abundance (Ciannelli et al, 2013), which has significant implications for marine ecology and fisheries management (Puerta et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Although the proportion of cephalopods in catches has been increasing over several decades, it has only accounted for about 5% of the total coastal marine catch during the last decade (Pang et al, 2018). Moreover, catch data are unavailable for each species, which makes fishery-independent survey data more valuable for scientific assessments.…”

Section: Introductionmentioning

confidence: 99%