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Elsler LG, Oostdijk M, Gephart JA, Free CM, Zhao J, Tekwa E, Bochniewicz EM, Giron-Nava A, Johnson AF. Global trade network patterns are coupled to fisheries sustainability. PNAS Nexus 2023; 2:pgad301. [PMID: 37817775 PMCID: PMC10560747 DOI: 10.1093/pnasnexus/pgad301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 07/12/2023] [Accepted: 08/31/2023] [Indexed: 10/12/2023]
Abstract
The rapid development of seafood trade networks alongside the decline in biomass of many marine populations raises important questions about the role of global trade in fisheries sustainability. Mounting empirical and theoretical evidence shows the importance of trade development on commercially exploited species. However, there is limited understanding of how the development of trade networks, such as differences in connectivity and duration, affects fisheries sustainability. In a global analysis of over 400,000 bilateral trade flows and stock status estimates for 876 exploited fish and marine invertebrates from 223 territories, we reveal patterns between seafood trade network indicators and fisheries sustainability using a dynamic panel regression analysis. We found that fragmented networks with strong connectivity within a group of countries and weaker links between those groups (modularity) are associated with higher relative biomass. From 1995 to 2015, modularity fluctuated, and the number of trade connections (degree) increased. Unlike previous studies, we found no relationship between the number or duration of trade connections and fisheries sustainability. Our results highlight the need to jointly investigate fisheries and trade. Improved coordination and partnerships between fisheries authorities and trade organizations present opportunities to foster more sustainable fisheries.
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Affiliation(s)
- Laura G Elsler
- Stockholm Resilience Centre, Stockholm University, 11419 Stockholm, Sweden
| | - Maartje Oostdijk
- School of Environment and Natural Resources, University of Iceland, 101 Reykjavik, Iceland
| | - Jessica A Gephart
- Department of Environmental Science, American University, Washington, DC 20016, USA
| | - Christopher M Free
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
- Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - Junfu Zhao
- Institute of Marxism, Fudan University, Shanghai 200433, China
| | - Eden Tekwa
- Department of Biology, McGill University, Montreal, QC H3A 1B1, Canada
| | | | - Alfredo Giron-Nava
- Stanford Center for Ocean Solutions, Stanford University, Palo Alto, CA 94305, USA
| | - Andrew F Johnson
- Marine SPACE group, The Lyell Centre, Energy, Geoscience, Infrastructure and Society, Heriot-Watt University, Edinburgh, Currie, Scotland EH14 4AS, UK
- MarFishEco Fisheries Consultants Ltd., Edinburgh, Scotland EH7 5HT, UK
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2
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Zhang X, Ye S, Shen M. Driving Factors and Spatiotemporal Characteristics of CO 2 Emissions from Marine Fisheries in China: A Commonly Neglected Carbon-Intensive Sector. Int J Environ Res Public Health 2023; 20:883. [PMID: 36613203 PMCID: PMC9820055 DOI: 10.3390/ijerph20010883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/28/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
The CO2 emissions from marine fisheries have a significant impact on marine ecology, despite generally being overlooked in studies on global climate change. Few studies have estimated the carbon emissions from marine fisheries while taking into account all pertinent sectors. This study evaluated marine fisheries' CO2 emissions based on three sectors: marine fishing, mariculture, and the marine aquatic product processing industry. Kernel density estimation and the spatial Durbin model were used to investigate the spatial and temporal characteristics and the key socioeconomic drivers of the CO2 emissions from marine fisheries in 11 coastal provinces of China from 2005 to 2020. The results are as follows: (1) marine fishing is the sector that produces the most CO2 emissions; trawling operations generate more CO2 than all other modes of operation combined; (2) China's marine fisheries' CO2 emissions show a rising, then declining, trend, with significant differences in coastal provinces; (3) the development of the marine fishery economy and trade have a positive driving effect on CO2 emissions, the expansion of the tertiary industry does not decrease CO2, the technical advancement and income growth of fishermen are negatively related to carbon emissions, and the effect of environmental regulation has failed to pass the significance test; (4) the carbon emissions of marine fisheries have significant spatial spillover effects.
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Affiliation(s)
- Xiao Zhang
- School of Business, Ningbo University, Ningbo 315211, China
| | - Shengchao Ye
- School of Business, Ningbo University, Ningbo 315211, China
| | - Manhong Shen
- School of Economics and Management, Zhejiang A&F University, Hangzhou 311300, China
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3
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Martínez-García L, Ferrari G, Cuevas A, Atmore LM, López-Arias B, Culling M, Llorente-Rodríguez L, Morales-Muñiz A, Roselló-Izquierdo E, Quirós JA, Marlasca-Martín R, Hänfling B, Hutchinson WF, Jakobsen KS, Jentoft S, Orton D, Star B, Barrett JH. Ancient DNA evidence for the ecological globalization of cod fishing in medieval and post-medieval Europe. Proc Biol Sci 2022; 289:20221107. [PMID: 36259206 DOI: 10.1098/rspb.2022.1107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Understanding the historical emergence and growth of long-range fisheries can provide fundamental insights into the timing of ecological impacts and the development of coastal communities during the last millennium. Whole-genome sequencing approaches can improve such understanding by determining the origin of archaeological fish specimens that may have been obtained from historic trade or distant water. Here, we used genome-wide data to individually infer the biological source of 37 ancient Atlantic cod specimens (ca 1050-1950 CE) from England and Spain. Our findings provide novel genetic evidence that eleventh- to twelfth-century specimens from London were predominantly obtained from nearby populations, while thirteenth- to fourteenth-century specimens were derived from distant sources. Our results further suggest that Icelandic cod was indeed exported to London earlier than previously reported. Our observations confirm the chronology and geography of the trans-Atlantic cod trade from Newfoundland to Spain starting by the early sixteenth century. Our findings demonstrate the utility of whole-genome sequencing and ancient DNA approaches to describe the globalization of marine fisheries and increase our understanding regarding the extent of the North Atlantic fish trade and long-range fisheries in medieval and early modern times.
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Affiliation(s)
- Lourdes Martínez-García
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway
| | - Giada Ferrari
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway.,Royal Botanic Garden Edinburgh, Edinburgh EH3 5NZ, UK
| | - Angélica Cuevas
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway
| | - Lane M Atmore
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway
| | - Begoña López-Arias
- Laboratorio de Arqueozoología LAZ-UAM, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Mark Culling
- Evolutionary Biology Group, Department of Biological Sciences, University of Hull, Hull HU6 7RX, UK
| | - Laura Llorente-Rodríguez
- Laboratory for Archaezoological Studies, Faculty of Archaeology, University of Leiden, Leiden 2311 EZ, The Netherlands
| | - Arturo Morales-Muñiz
- Laboratorio de Arqueozoología LAZ-UAM, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | | | - Juan Antonio Quirós
- Department of Geography, Prehistory and Archaeology, University of the Basque Country, Vitoria-Gasteiz 48940, Spain
| | | | - Bernd Hänfling
- Institute for Biodiversity and Freshwater Conservation, UHI-Inverness, Inverness, UK
| | - William F Hutchinson
- Evolutionary Biology Group, Department of Biological Sciences, University of Hull, Hull HU6 7RX, UK
| | - Kjetill S Jakobsen
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway
| | - Sissel Jentoft
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway
| | - David Orton
- BioArCh, Department of Archaeology, University of York, York, UK
| | - Bastiaan Star
- Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biosciences, University of Oslo, Oslo 0315, Norway
| | - James H Barrett
- Department of Archaeology and Cultural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim 7012, Norway
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4
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Li B, Liu Z. Measurement and Evolution of High-quality Development Level of Marine Fishery in China. Chin Geogr Sci 2022; 32:251-267. [PMID: 35018077 PMCID: PMC8739376 DOI: 10.1007/s11769-022-1263-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 09/09/2021] [Indexed: 05/11/2023]
Abstract
High-quality development of marine fisheries provides an important advantage for China to build itself into a maritime power and implement the Blue Granary Plan effectively. Based on the concepts of 'new development', 'food security', and the six dimensions of 'openness, innovation, coordination, green, sharing, and security', in this study, we established an evaluation index system for the high-quality development of China's marine fishery sector. We applied the entropy method to evaluate the high-quality development level of China's marine fishery sector from 2000 to 2016 and explored its spatial and temporal evolution rules. Our results indicated that: 1) from 2000 to 2016, China's marine fishery sector was in the primary stage of high-quality development; 2) spatially, the highquality development of marine fisheries showed an upward trend in all provinces, autonomous regions, and municipalities in the country (not including Hong Kong, Macao and Taiwan of China), and with time, the distribution pattern changed from single to multi-polarization; 3) temporally, the development level of high-quality marine fisheries fluctuated during the study period. From 2000 to 2010, the growth rate in openness was relatively slow, but after 2010, it increased rapidly. Notably, innovation is the driving force for high-quality development. The green and security factors provide a solid guarantee for high-quality development. In the high-quality development of a region, economic development is better coordinated, and the distribution of benefits is more inclusive. This study provides a theoretical basis to formulate effective marine fishery policies for the high-quality development of the marine fishery sector in China. Exploring the high-quality development and evolution process of marine fishery is conducive to promoting the sustainable development of marine fishery industry, ensuring marine fishery food security, and alleviating global food crisis.
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Affiliation(s)
- Bo Li
- Institute of Marine Sustainable Development, Liaoning Normal University, Dalian, 116029 China
| | - Zun Liu
- Institute of Marine Sustainable Development, Liaoning Normal University, Dalian, 116029 China
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5
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Ong JJL, Walter JA, Jensen OP, Pinsky ML. Global hotspots of coherent marine fishery catches. Ecol Appl 2021; 31:e02321. [PMID: 33655574 PMCID: PMC8365744 DOI: 10.1002/eap.2321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/13/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
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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Affiliation(s)
- Joyce J. L. Ong
- Department of Ecology, Evolution and Natural ResourcesRutgers University14 College Farm RoadNew BrunswickNew Jersey08901USA
- Present address:
Asian School of the EnvironmentNanyang Technological University50 Nanyang Avenue639798Singapore
| | - Jonathan A. Walter
- Department of Environmental SciencesUniversity of Virginia291 McCormick RoadCharlottesvilleVirginia22903USA
| | - Olaf P. Jensen
- Department of Marine and Coastal SciencesRutgers University71 Dudley RoadNew BrunswickNew Jersey08901USA
- Center for LimnologyUniversity of Wisconsin‐Madison680 N Park StreetMadisonWisconsin53706USA
| | - Malin L. Pinsky
- Department of Ecology, Evolution and Natural ResourcesRutgers University14 College Farm RoadNew BrunswickNew Jersey08901USA
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6
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Savoca MS, McInturf AG, Hazen EL. Plastic ingestion by marine fish is widespread and increasing. Glob Chang Biol 2021; 27:2188-2199. [PMID: 33561314 PMCID: PMC8247990 DOI: 10.1111/gcb.15533] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 01/19/2021] [Accepted: 01/20/2021] [Indexed: 05/19/2023]
Abstract
Plastic pollution has pervaded almost every facet of the biosphere, yet we lack an understanding of consumption risk by marine species at the global scale. To address this, we compile data from research documenting plastic debris ingestion by marine fish, totaling 171,774 individuals of 555 species. Overall, 386 marine fish species have ingested plastic debris including 210 species of commercial importance. However, 148 species studied had no records of plastic consumption, suggesting that while this evolutionary trap is widespread, it is not yet universal. Across all studies that accounted for microplastics, the incidence rate of plastic ingested by fish was 26%. Over the last decade this incidence has doubled, increasing by 2.4 ± 0.4% per year. This is driven both by increasing detection of smaller sized particles as a result of improved methodologies, as well as an increase in fish consuming plastic. Further, we investigated the role of geographic, ecological, and behavioral factors in the ingestion of plastic across species. These analyses revealed that the abundance of plastic in surface waters was positively correlated to plastic ingestion. Demersal species are more likely to ingest plastic in shallow waters; in contrast, pelagic species were most likely to consume plastic below the mixed layer. Mobile predatory species had the highest likelihood to ingest plastic; similarly, we found a positive relationship between trophic level and plastic ingestion. We also find evidence that surface ingestion-deep sea egestion of microplastics by mesopelagic myctophids is likely a key mechanism for the export of microplastics from the surface ocean to the seafloor, a sink for marine debris. These results elucidate the role of ecology and biogeography underlying plastic ingestion by marine fish and point toward species and regions in urgent need of study.
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Affiliation(s)
- Matthew S. Savoca
- Hopkins Marine StationDepartment of BiologyStanford UniversityPacific GroveCAUSA
| | - Alexandra G. McInturf
- Department of Wildlife, Fish, and Conservation BiologyUniversity of CaliforniaDavisCAUSA
- Animal Behavior Graduate GroupUniversity of CaliforniaDavisCAUSA
| | - Elliott L. Hazen
- Hopkins Marine StationDepartment of BiologyStanford UniversityPacific GroveCAUSA
- Environmental Research DivisionSouthwest Fisheries Science CenterNational Oceanic and Atmospheric AdministrationMontereyCAUSA
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaSanta CruzCAUSA
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7
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Fernandes JA, Rutterford L, Simpson SD, Butenschön M, Frölicher TL, Yool A, Cheung WWL, Grant A. Can we project changes in fish abundance and distribution in response to climate? Glob Chang Biol 2020; 26:3891-3905. [PMID: 32378286 DOI: 10.1111/gcb.15081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 02/05/2020] [Accepted: 02/23/2020] [Indexed: 06/11/2023]
Abstract
Large-scale and long-term changes in fish abundance and distribution in response to climate change have been simulated using both statistical and process-based models. However, national and regional fisheries management requires also shorter term projections on smaller spatial scales, and these need to be validated against fisheries data. A 26-year time series of fish surveys with high spatial resolution in the North-East Atlantic provides a unique opportunity to assess the ability of models to correctly simulate the changes in fish distribution and abundance that occurred in response to climate variability and change. We use a dynamic bioclimate envelope model forced by physical-biogeochemical output from eight ocean models to simulate changes in fish abundance and distribution at scales down to a spatial resolution of 0.5°. When comparing with these simulations with annual fish survey data, we found the largest differences at the 0.5° scale. Differences between fishery model runs driven by different biogeochemical models decrease dramatically when results are aggregated to larger scales (e.g. the whole North Sea), to total catches rather than individual species or when the ensemble mean instead of individual simulations are used. Recent improvements in the fidelity of biogeochemical models translate into lower error rates in the fisheries simulations. However, predictions based on different biogeochemical models are often more similar to each other than they are to the survey data, except for some pelagic species. We conclude that model results can be used to guide fisheries management at larger spatial scales, but more caution is needed at smaller scales.
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Affiliation(s)
- Jose A Fernandes
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Pasaia, Spain
- Plymouth Marine Laboratory, Plymouth, UK
| | - Louise Rutterford
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol, UK
| | - Stephen D Simpson
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol, UK
| | - Momme Butenschön
- Plymouth Marine Laboratory, Plymouth, UK
- Ocean Modeling and Data Assimilation Division, Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
| | - Thomas L Frölicher
- Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Andrew Yool
- National Oceanography Centre, Southampton, UK
| | - William W L Cheung
- Nippon Foundation-Nereus Program, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, BC, Canada
| | - Alastair Grant
- Ocean Modeling and Data Assimilation Division, Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
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8
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Cao L, Chen Y, Dong S, Hanson A, Huang B, Leadbitter D, Little DC, Pikitch EK, Qiu Y, Sadovy de Mitcheson Y, Sumaila UR, Williams M, Xue G, Ye Y, Zhang W, Zhou Y, Zhuang P, Naylor RL. Opportunity for marine fisheries reform in China. Proc Natl Acad Sci U S A 2017; 114:435-42. [PMID: 28096504 DOI: 10.1073/pnas.1616583114] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
China's 13th Five-Year Plan, launched in March 2016, provides a sound policy platform for the protection of marine ecosystems and the restoration of capture fisheries within China's exclusive economic zone. What distinguishes China among many other countries striving for marine fisheries reform is its size-accounting for almost one-fifth of global catch volume-and the unique cultural context of its economic and resource management. In this paper, we trace the history of Chinese government priorities, policies, and outcomes related to marine fisheries since the 1978 Economic Reform, and examine how the current leadership's agenda for "ecological civilization" could successfully transform marine resource management in the coming years. We show how China, like many other countries, has experienced a decline in the average trophic level of its capture fisheries during the past few decades, and how its policy design, implementation, and enforcement have influenced the status of its wild fish stocks. To reverse the trend in declining fish stocks, the government is introducing a series of new programs for sustainable fisheries and aquaculture, with greater traceability and accountability in marine resource management and area controls on coastal development. As impressive as these new plans are on paper, we conclude that serious institutional reforms will be needed to achieve a true paradigm shift in marine fisheries management in China. In particular, we recommend new institutions for science-based fisheries management, secure fishing access, policy consistency across provinces, educational programs for fisheries managers, and increasing public access to scientific data.
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9
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Ding Q, Wang Y, Chen X, Chen Y. Effects of economics and demographics on global fisheries sustainability. Conserv Biol 2017; 31:799-808. [PMID: 27921317 DOI: 10.1111/cobi.12873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 11/08/2016] [Accepted: 11/27/2016] [Indexed: 06/06/2023]
Abstract
A good understanding of social factors that lead to marine ecological change is important to developing sustainable global fisheries. We used balanced panel models and conducted cross-national time-series analyses (1970-2010) of 122 nations to examine how economic prosperity and population growth affected the sustainability of marine ecosystems. We used catches in economic exclusive zone (EEZ); mean trophic level of fishery landings (MTL); primary production required to sustain catches (expressed as percentage of local primary production [%PPR]); and an index of ecosystem overfishing (i.e., the loss in secondary production index [L index]) as indicators of ecological change in marine ecosystems. The EEZ catch, %PPR, and L index declined gradually after gross domestic product (GDP) per capita reached $15,000, $14,000, and $19,000, respectively, and MTL increased steadily once GDP per capita exceeded $20,000. These relationships suggest that economic growth and biodiversity conservation are compatible goals. However, increasing human populations would degrade marine ecosystems. Specifically, a doubling of human population caused an increase in the %PPR of 17.1% and in the L index of 0.0254 and a decline in the MTL of 0.176. A 1% increase in human population resulted in a 0.744% increase in EEZ catch. These results highlight the importance of considering social and economic factors in developing sustainable fisheries management policy.
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Affiliation(s)
- Qi Ding
- College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China
- Collaborative Innovation Center for Distant-Water Fisheries, Shanghai, 201306, China
| | - Yali Wang
- Institute of Finance and Economics, Shanghai University of Finance and Economics, Shanghai, 200433, China
| | - Xinjun Chen
- College of Marine Sciences, Shanghai Ocean University, Shanghai, 201306, China
- Collaborative Innovation Center for Distant-Water Fisheries, Shanghai, 201306, China
- Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China
- National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai, 201306, China
| | - Yong Chen
- Collaborative Innovation Center for Distant-Water Fisheries, Shanghai, 201306, China
- School of Marine Sciences, University of Maine, Orono, ME, 04469, U.S.A
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10
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Rick TC, Reeder-Myers LA, Hofman CA, Breitburg D, Lockwood R, Henkes G, Kellogg L, Lowery D, Luckenbach MW, Mann R, Ogburn MB, Southworth M, Wah J, Wesson J, Hines AH. Millennial-scale sustainability of the Chesapeake Bay Native American oyster fishery. Proc Natl Acad Sci U S A 2016; 113:6568-73. [PMID: 27217572 DOI: 10.1073/pnas.1600019113] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Estuaries around the world are in a state of decline following decades or more of overfishing, pollution, and climate change. Oysters (Ostreidae), ecosystem engineers in many estuaries, influence water quality, construct habitat, and provide food for humans and wildlife. In North America's Chesapeake Bay, once-thriving eastern oyster (Crassostrea virginica) populations have declined dramatically, making their restoration and conservation extremely challenging. Here we present data on oyster size and human harvest from Chesapeake Bay archaeological sites spanning ∼3,500 y of Native American, colonial, and historical occupation. We compare oysters from archaeological sites with Pleistocene oyster reefs that existed before human harvest, modern oyster reefs, and other records of human oyster harvest from around the world. Native American fisheries were focused on nearshore oysters and were likely harvested at a rate that was sustainable over centuries to millennia, despite changing Holocene climatic conditions and sea-level rise. These data document resilience in oyster populations under long-term Native American harvest, sea-level rise, and climate change; provide context for managing modern oyster fisheries in the Chesapeake Bay and elsewhere around the world; and demonstrate an interdisciplinary approach that can be applied broadly to other fisheries.
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11
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Zhu Y, Cheng Q, Rogers SM. Genetic structure of Scomber japonicus (Perciformes: Scombridae) along the coast of China revealed by complete mitochondrial cytochrome b sequences. Mitochondrial DNA A DNA Mapp Seq Anal 2014; 27:3828-3836. [PMID: 25230701 DOI: 10.3109/19401736.2014.958671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The phylogeography history and contemporary agents of selection for many marine fisheries, characterized by widespread species distributions in the face of significant harvest, remains poorly understood. Chub mackerel (Scomber japonicus) are a widespread species in the Indo-Pacific and represent one of the top five commercially fished species in the world, yet their phylogeographic history remains unknown. We characterized the genetic diversity, structure and demographic history of S. japonicus throughout adjacent Chinese seas (from the Yellow Sea to the South China Sea). Using 220 individuals from 11 sites, we inferred 55 distinct haplotypes from complete mitochondrial cytochrome b gene sequences. Haplotype diversity ranged from 0.505 to 0.967 and nucleotide diversity ranged from 0.00056 to 0.01042. Genetic differentiation (Fst) statistics suggested that the highest level of differentiation existed between the SanYa and SanSha localities (Fst = 0.86977), while the lowest levels of differentiation occurred between the DongGang and ShiDao localities (Fst ∼ 0). Kimura's genetic distances ranged from 0.001 to 0.011 within and from 0.001 to 0.018 between populations. Hierarchical analysis of molecular variance, Neighbor-joining and median-joining network analyses identified significant phylogeographic structure with two localities (SanYa, Hainan of the South China Sea and LianYunGang, Jiangsu of the East China Sea) explaining most of the genetic variation observed, while the remaining populations were poorly differentiated.
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Affiliation(s)
- Yuxia Zhu
- a Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization , Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Shanghai , China and
| | - Qiqun Cheng
- a Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation and Utilization , Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences , Shanghai , China and
| | - Sean M Rogers
- b Department of Biological Sciences , University of Calgary , Calgary , Alberta , Canada
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12
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Ardura A, Planes S, Garcia-Vazquez E. Applications of DNA barcoding to fish landings: authentication and diversity assessment. Zookeys 2013; 365:49-65. [PMID: 24453550 PMCID: PMC3890670 DOI: 10.3897/zookeys.365.6409] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 10/23/2013] [Indexed: 11/24/2022] Open
Abstract
DNA barcoding methodologies are being increasingly applied not only for scientific purposes but also for diverse real-life uses. Fisheries assessment is a potential niche for DNA barcoding, which serves for species authentication and may also be used for estimating within-population genetic diversity of exploited fish. Analysis of single-sequence barcodes has been proposed as a shortcut for measuring diversity in addition to the original purpose of species identification. Here we explore the relative utility of different mitochondrial sequences (12S rDNA, COI, cyt b, and D-Loop) for application as barcodes in fisheries sciences, using as case studies two marine and two freshwater catches of contrasting diversity levels. Ambiguous catch identification from COI and cyt b was observed. In some cases this could be attributed to duplicated names in databases, but in others it could be due to mitochondrial introgression between closely related species that may obscure species assignation from mtDNA. This last problem could be solved using a combination of mitochondrial and nuclear genes. We suggest to simultaneously analyze one conserved and one more polymorphic gene to identify species and assess diversity in fish catches.
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Affiliation(s)
- Alba Ardura
- University of Oviedo, Department of Functional Biology. C/ Julian Claveria s/n. 33006-Oviedo, Spain
| | - Serge Planes
- USR 3278 CNRS – EPHE. Centre de Recherche Insulaire et Observatoire de l’Environnement (CRIOBE) BP 1013 - 98 729, Papetoai, Moorea, Polynésie française
- Centre de Biologie et d’Ecologie Tropicale et Méditerranéenne, Université de Perpignan, 52 Av. Paul Alduy - 66860 Perpignan cedex, France
| | - Eva Garcia-Vazquez
- University of Oviedo, Department of Functional Biology. C/ Julian Claveria s/n. 33006-Oviedo, Spain
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