Revisiting the Regime Problem hypothesis: 25 years later

Izquierdo-Peña, Vanessa; Lluch-Cota, Salvador E.; Hernández-Rivas, Martín E.; Martínez‐Rincón, Raúl O.

doi:10.1016/j.dsr2.2018.11.003

Cited by 10 publications

(15 citation statements)

References 24 publications

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“…The present study reaffirms the influence of environmental parameters in determining the variability in landings of Indian oil sardine in the SEAS, as the earlier studies that examined the sardine production fluctuations around the globe (Chavez et al, 2003;Izquierdo-Peña et al, 2019). We noticed a higher concentration of chl-a in the SEAS during the years of surplus sardine landings, especially in the months of spawning and active feeding of larvae.…”

Section: Discussionsupporting

confidence: 89%

“…Globally, the sardine fishery has shown wide fluctuations during the past 100 years, that is with relatively high abundance during some years and scarce during other years, in addition to their spatial variability (Guiñez et al., 2014; Izquierdo‐Peña et al., 2019; Ma et al., 2019; Schwartzlose & Alheit, 1999). The fisheries of sardines and anchovies across the coast of California, Peru, South Africa and Japan have displayed wide spatio‐temporal fluctuations (Barange et al., 2009; Chavez et al., 2003; Cheung et al., 2010; Oozeki et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, these fluctuations could also help reveal the influence of environmental factors and their corresponding variability in the landings of pelagics, especially for the sardines and anchovies (Checkley et al., 2009; Lluch‐Belda et al., 1989; Lindegren et al, 2013). Global fluctuations in the production of sardines and anchovies seem to be controlled by long‐term variations in environmental parameters, resulting in "regimes" in their fishery in a particular spatio‐temporal domain (Blanchard et al., 2012; Checkley Jr et al., 2017; Izquierdo‐Peña et al., 2019). This relation has been widely studied in the Northeast Atlantic, Mediterranean Sea, China Seas and Pacific coasts and recently reported as a collection of papers in a special issue of the Deep Sea Research‐II (Alheit et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

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Climate impacts on the landings of Indian oil sardine over the south‐eastern Arabian Sea

et al. 2020

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The landings of Indian oil sardine (Sardinella longiceps, Clupeidae) along the southeastern Arabian Sea are about 43.8% of total Indian oil sardine production. The annual landings of this species exhibit large-scale variability with prolonged years of surplus or deficit landings without identified reason. Evaluating Indian oil sardine landings along the Kerala coast during 1961-2017 in relation to environmental variations, we have elucidated a putative link between variability in landings versus environmental parameters and climate indices. The variables examined in this study, such as salinity and temperature along with physical indices such as upwelling and mixed layer depth (MLD) of the ocean help to propose a mechanism to temporal variability in the landings of Indian oil sardine. Colder temperature and timely intense upwelling lead to nutrient enrichment in the surface water, which promotes the growth of phytoplankton (chl-a) and thereby food availability to Indian oil sardine are found during years with surplus catch. Less saline surface waters and shoaling of MLD at these times could lead to the aggregation of fish at particular depths and thereby a good catches. The reverse mechanism, such as more surface saline water, warm temperature, downwelling or weak upwelling, and less nutrient enrichment, leads to deficit landings. Further, it was noticed that the Pacific decadal oscillation and Atlantic multidecadal oscillation have a more pronounced impact on Indian oil sardine landings over the coast of southeastern Arabian Sea than previously reported ENSO associated impacts. All these point towards climate change implications for the Indian oil sardine fishery.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Climate impacts on the landings of Indian oil sardine over the south‐eastern Arabian Sea

et al. 2020

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“…Furthermore, trophic or competitive relationships can also drive community synchrony (Huitu et al 2004 , Loreau and de Mazancourt 2008 ). The nature of fluctuations (e.g., synchronous, anti‐synchronous, lagged) can help point to likely drivers, yet attributing causality to patterns in synchronicity among marine fisheries time series is still debated (Lluch‐Belda et al 1992 , Schwartzlose et al 1999 , Sugihara et al 2012 , Izquierdo‐Peña et al 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Global hotspots of coherent marine fishery catches

Ong

Walter

Jensen

et al. 2021

Ecological Applications

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Although different fisheries can be tightly linked to each other by human and ecosystem processes, they are often managed independently. Synchronous fluctuations among fish populations or fishery catches can destabilize ecosystems and economies, respectively, but the degree of synchrony around the world remains unclear. We analyzed 1,092 marine fisheries catch time series over 60 yr to test for the presence of coherence, a form of synchrony that allows for phase-lagged relationships. We found that nearly every fishery was coherent with at least one other fishery catch time series globally and that coherence was strongest in the northeast Atlantic, western central Pacific, and eastern Indian Ocean. Analysis of fish biomass and fishing mortality time series from these hotspots revealed that coherence in biomass or fishing mortality were both possible, though biomass coherence was more common. Most of these relationships were synchronous with no time lags, and across catches in all regions, synchrony was a better predictor of regional catch portfolio effects than catch diversity. Regions with higher synchrony had lower stability in aggregate fishery catches, which can have negative consequences for food security and economic wealth.

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“…This extensive review has identified the research gaps which have to be addressed to develop good predictive models. In a recent study conducted by updating the time series data of small pelagics to check the whether the regime change problem exists, Izquierdo-Peña et al (2019) observed that the multi-decadal synchrony remains clear for the Kuroshio and Humboldt systems and but there is no single worldwide model of variability tele-connecting all small pelagics.…”

Section: Introductionmentioning

confidence: 99%

Similarities between Indian oil sardine Sardinella longiceps Valenciennes, 1847 and global sardine fisheries and its management

Kripa¹,

Mohamed²,

Padua³

et al. 2019

J. Mar.Biol.Ass.India

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Small pelagic fishes categorized as Herrings, Anchovies and Sardine (HAS) in FAO fisheries statistics have contributed to world fish landings considerably; ranging from 42.7% of the world marine fish production in 1964 and to a low of 19% in 2014. An analysis of commercially important sardine fishery across the globe during last six decades from 1956 to 2015 was attempted which indicated that there is considerable variation in the magnitude of production between countries and species. Comparison of variation in fishery of four species of Sardinops, one species of Sardina and seven species of Sardinella clearly indicated that the landing of oil sardine (Sardinella longiceps) from the Indian sub-continent is considerably higher than that of most major sardine species across the globe. During the last decade (2006 to 2015), the average landing of oil sardine was 0.50 x 10 6 tonnes and was ranked second among sardine group, first being Sardina pilchardus (1.11 x 10 6 tonnes). In the present manuscript, the spatial pattern of the contribution of each country to world sardine production (long term and decadal average) and its deviation have been plotted on a GIS platform. The extensive investigations spanning over 60 years on the large scale fluctuations on sardine-anchovy fisheries in the Pacific and Atlantic has identified impacts of regime shifts and other environmental variations, eco-biological changes, overfishing or a combination of all these on the decline and revival of sardine biomasses. Similar detailed investigations covering larval ecology and sardine habitat variations are yet to be attempted for the tropical Asian sardine resources. Considering the global significance of oil sardine population along the coastal upwelling zone of southeastern Arabian Sea, it is suggested that collaborative integrated research on small pelagics of Southeast Asia be planned and developed to increase the efficiency of predictive modelling. The various management measures adopted globally for sardines is also presented which would support decision making for planners to support the livelihood of fishers when sardine stocks decline drastically.

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Revisiting the Regime Problem hypothesis: 25 years later

Cited by 10 publications

References 24 publications

Climate impacts on the landings of Indian oil sardine over the south‐eastern Arabian Sea

Climate impacts on the landings of Indian oil sardine over the south‐eastern Arabian Sea

Global hotspots of coherent marine fishery catches

Similarities between Indian oil sardine Sardinella longiceps Valenciennes, 1847 and global sardine fisheries and its management

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