Vulnerability and Decision-Making in Multispecies Fisheries: A Risk Assessment of Bacalao (Mycteroperca olfax) and Related Species in the Galapagos’ Handline Fishery

Pontón-Cevallos, José; Bruneel, Stijn; Jarrín, José R. Marín; Ramírez-González, Jorge; Bermúdez, Rafael; Goethals, Peter

doi:10.3390/su12176931

Cited by 8 publications

(4 citation statements)

References 60 publications

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“…However, the research on decision-making in marine management involves more research results, such as decision-making models and methods, while the research results that systematically comprehensively analyze the literature are relatively few. Furthermore, related research on the systematic review of decision-making in marine management, including decision-making research related to fisheries [18,19], marine resources [20,21], etc., which undoubtedly has an important supporting role for decision-making in marine management research. However, the related researches on a systematic review of decision-making in marine management by scholars usually focus on a specific field of marine management, while the research results that systematically analyze the literature from the comprehensive perspective of marine management are rare.…”

Section: Introductionmentioning

confidence: 99%

Research Status, Hotspots, and Evolution Trend of Decision-Making in Marine Management Using VOSviewer and CiteSpace

Yang

Hua

2022

Mathematical Problems in Engineering

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Clarifying the research status, hotspots, and evolution trend of the field of research on decision-making in marine management has certain reference significance for the scholars and decision makers in the field of decision-making in marine management at the theoretical and practical levels. In view of this, this study used 443 pieces of literature retrieved from the Web of Science from 2002 to 2021 as the data source. It adopted the methods of statistical analysis and bibliometric analysis to conduct knowledge mapping visualization analysis in the field of research on decision-making in marine management. The results show that ①there is a high correlation between the level of economic development among countries/regions and the number of publications, and the geographical distribution is closely related to the intensity of research cooperation; ②the research organizations show the characteristics of the diversified distribution. Moreover, although there is no noticeable difference in scientific research output among research organizations, influential research organizations such as NOAA, The Nature Conservancy, and so forth have emerged; ③the author groups as a whole do not show a high cooperation intensity, but there are also scholars with high cooperation intensity within the internal group and other research groups; ④the research hotspots distribution in the field of decision-making in marine management is relatively extensive and belongs to a multidimensional and multiperspective systematic research. Furthermore, the research focuses on subdivision research hotspots mainly involving ecosystem services, knowledge exchange, decision analysis, multicriteria decision, decision support, fisheries management, specific mathematical models and theories, etc; ⑤from the perspective of the evolution trend, it can also be found that different clusters show the evolution trend of overlapping common features and individual features.

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Section: Introductionmentioning

confidence: 99%

Research Status, Hotspots, and Evolution Trend of Decision-Making in Marine Management Using VOSviewer and CiteSpace

Yang

Hua

2022

Mathematical Problems in Engineering

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“…The set of attributes used, model assumptions, as well as the species assessed play roles to determine the magnitude of the change observed when applying the rPSA. We compare five previously published studies, conducted across 4 continents and 302 species: Sri Lanka (12 species, 11 attributes) (Cotter & Lart, 2011), aquarium trade (61 species, 22 attributes) (Dee et al., 2019), Taiwan (52 species, 12 attributes) (Lin et al., 2020), North America (166 species, 22 attributes) (Patrick et al., 2009) and Galapagos (11 species, 11 attributes) (Pontón‐Cevallos et al., 2020). Figure 6 demonstrates that despite the range of inputs to the PSA, a significant proportion of species is re‐categorized with the rPSA.…”

Section: Discussionmentioning

confidence: 99%

Redefining risk in data‐poor fisheries

et al. 2021

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The productivity susceptibility analysis (PSA) is a widely used method to rapidly assess species risk to fishing activities in data‐poor fisheries. A step in ecological risk assessments and used in data‐poor assessment for sustainable fisheries certification programmes (e.g. MSC) and recommendation lists (e.g. Seafood Watch), the PSA is semi‐quantitative, yet little attention has been given to the theoretical basis of this analysis. Current thresholds designating low‐, medium‐ and high‐risk categories divide the PSA plot by equal area, assuming area corresponds to likelihood. We show that plot area does not correspond to likelihood, however, and existing thresholds need revision due to the non‐uniform distribution of vulnerability scores on the PSA plot. The probability of medium risk assignment increases with the number of attributes used to characterize productivity and susceptibility. Here, we present a novel and statistically robust method to derive vulnerability, where threshold values between the risk categories are adjusted with the number of attributes used in the assessment. Our comprehensive framework accounts for all variations in the method, including logarithmic scaling of axes, weighting of attributes and scoring procedures. Simulated results across a range of conditions and comparative evaluation of 302 species in five studies show that one‐third of species may be re‐categorized with the new PSA approach. Importantly, the existing PSA approach underestimates risk by up to 35% when compared with the new method. These findings have strong implications for management of data‐poor fisheries. We recommend adoption of this approach to the PSA to better resolve species’ risk.

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“…The Galapagos Islands represent an interesting case study to access and explore fishers' LEK concerning mangrove-fishery linkages, as other studies have portrayed them as socialecological laboratory to investigate the early links and interactions between social and natural systems (Gonzaĺez et al, 2008;Pontoń-Cevallos et al, 2020;Riascos-Flores et al, 2021). The archipelago is surrounded by the Galapagos Marine Reserve (GMR), a multi-use marine protected area in which small-scale fisheries, tourism, research, management and conservation sectors depict competing interests and alliances (Heylings et al, 2002;Jones, 2013).…”

Section: Introductionmentioning

confidence: 99%

Fishers’ Local Ecological Knowledge to Support Mangrove Research in the Galapagos

Pontón-Cevallos

Ramírez-Valarezo²,

Pozo-Cajas³

et al. 2022

Front. Mar. Sci.

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Mangroves provide multiple ecosystem services to coastal communities and their fisheries. In the Galapagos, mangroves have been primarily prized for their role as nursery grounds; though, the importance of cultural benefits, including the development of knowledge systems among fishers, needs to be further explored. Fishers’ local ecological knowledge (LEK) has been employed in the past to answer questions about the marine environment; not yet about mangroves. In such regard, this ethnoecological approach can contribute to unveil mangrove habitat-dependence relationships among fishery taxa across the life cycle, connectivity among habitats, and productivity spatial patterns across the archipelago. To access fishers’ LEK, we conducted 35 semi-structured interviews and 2 facilitated community workshops comprising 3 activities. A photo-elicitation method allowed us to extract values given to mangroves (i.e., ecosystem services), from which indirect use values were considered more relevant for fisheries. As such, the accumulation of LEK might have been crucial for the establishment of these values among fishers. By using a species-habitat association method, we revealed a high perceived connectivity between mangroves and other coastal and marine habitats in the Galapagos. Although this suggests an overall weak dependence to the ecosystem, fishers’ anecdotes allowed us to recognize novel species occurrences and exclusive habitat uses (e.g., spawning in Centropomus viridis). By applying Social Network Analysis to species-habitat association results, we learned that certain migratory commercial species (e.g., Lutjanus argentiventris, Seriola rivoliana) might constitute critical links in marine trophic webs and across seascapes. Finally, through scoring and participatory mapping methods, we revealed the prominence of western islands’ mangroves for fishery productivity, which were linked to biophysical attributes, like forest canopy and freshwater. Yet, other locations in central and southeastern islands might also be important, as they hold similar attributes. Interviews to other mangrove users (e.g., naturalist guides, park rangers, scientists; N = 33), and past scientific studies allowed us to triangulate LEK and to find complementarity among knowledge sources. Despite having an explorative focus, our work already showcases the potential of fishers’ LEK in improving mangrove research in the Galapagos, and the arising opportunities for ecosystem-based fisheries management and mangrove protection.

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Vulnerability and Decision-Making in Multispecies Fisheries: A Risk Assessment of Bacalao (Mycteroperca olfax) and Related Species in the Galapagos’ Handline Fishery

Cited by 8 publications

References 60 publications

Research Status, Hotspots, and Evolution Trend of Decision-Making in Marine Management Using VOSviewer and CiteSpace

Research Status, Hotspots, and Evolution Trend of Decision-Making in Marine Management Using VOSviewer and CiteSpace

Redefining risk in data‐poor fisheries

Fishers’ Local Ecological Knowledge to Support Mangrove Research in the Galapagos

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