Low impact and fuel efficient fishing—Looking beyond the horizon

Suuronen, Petri; Chopin, Francis; Glass, Chris R.; Løkkeborg, Svein; Matsushita, Yoshiki; Queirolo, Dante; Rihan, Dominic

doi:10.1016/j.fishres.2011.12.009

Cited by 240 publications

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References 70 publications

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“…However, they can have a negative impact on other vulnerable species and produce ghost fishing due to lost or abandoned gillnets (Rihan, 2010). In this sense, ghost fishing is a global concern since lost or abandoned fishing gear can keep generating unquantified mortality during weeks, months or even years depending on the construction of nets, operational depth and environmental conditions (Tschernij & Larsson, 2003;Matsuoka et al, 2005;Brown & Macfadyen, 2007;Suuronen et al, 2012). Due to the negative impact on species and environment, the FAO's code of conduct for responsible fisheries points out that states should cooperate to develop and apply technologies, materials and operational methods that reduce fishing gear losses and the ghost fishing effects of lost or abandoned fishing gear.…”

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Experimental study of ghost fishing by gillnets in Laguna Verde Valparaiso, Chile

Queirolo

Gaete

2014

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ABSTRACT. In 2010, two experiments were carried out in order to study ghost fishing generated by lost or abandoned gillnets. The first experiment was aimed to identify and quantify the number of captured specimens in intentionally abandoned gillnet between 45 and 86 m depth, which were periodically checked up to 156 days after being abandoned. In this experiment, 912 specimens of 12 taxa were caught, mostly invertebrates such as Cancer porteri (81.6%) and Platymera gaudichaudii (9%). After the abandonment, the fish caught were only registered until day 63, while benthic species were captured during all the experiment. The second experiment consisted of checking and registering periodically the loss of height of an abandoned gillnet at 34 m depth in order to determine the reduction of the fishing capacity of the net. After 19 days of abandonment, the functional area of the net was reduced to 40% of the original area, reaching nearly zero after 155 days of abandonment. In order to estimate the potential effect of lost or abandoned gillnets in Chilean hake fisheries (Merluccius gayi gayi), an additional information-collecting process must be carried out, mainly in terms of frequency of gillnets losses. Keywords: ghost fishing, gillnet, artisanal fishery, Chile. Estudio experimental de pesca fantasma por redes de enmalle en Laguna VerdeValparaíso, Chile RESUMEN. Se realizaron dos experimentos en 2010 para estudiar la pesca fantasma que generan las redes de enmalle luego de ser perdidas o abandonadas. El primer experimento tuvo por objetivo la identificación y cuantificación de ejemplares retenidos en redes abandonadas intencionalmente entre 45 y 86 m de profundidad, las que fueron revisadas periódicamente hasta 156 días luego de su abandono. En este experimento se capturó un total de 912 ejemplares pertenecientes a 12 taxa, en su mayoría invertebrados como Cancer porteri (81,6%) y Platymera gaudichaudii (9%). Sólo se registró la captura de peces hasta el día 63 luego del abandono, mientras que especies bentónicas fueron capturadas durante todo el experimento. Por su parte, el segundo experimento consistió en revisar y registrar periódicamente la pérdida de altura de una red de enmalle abandonada a 34 m de profundidad para conocer la reducción de la capacidad de pesca de la red. A los 19 días luego del abandono, el área funcional de la red se redujo al 40% del área original, y llegó prácticamente a cero al cabo de 155 días de abandono. El levantamiento de información adicional debe ser realizado para estimar el efecto potencial de las redes perdidas o abandonadas en la pesquería de merluza común (Merluccius gayi gayi), especialmente en términos de la frecuencia de pérdida de las redes de enmalle.

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Experimental study of ghost fishing by gillnets in Laguna Verde Valparaiso, Chile

Queirolo

Gaete

2014

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“…The latter enables the development of energy efficient approaches for fishing vessels (e.g. Suuronen et al, 2012) and prediction of fuel costs (Daurès, Trenkel, & Guyader, 2013). …”

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Integrated ecological–economic fisheries models—Evaluation, review and challenges for implementation

et al. 2017

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Marine ecosystems evolve under many interconnected and area-specific pressures. To fulfil society's intensifying and diversifying needs while ensuring ecologically sustainable development, more effective marine spatial planning and broader-scope management of marine resources is necessary. Integrated ecological-economic fisheries models (IEEFMs) of marine systems are needed to evaluate impacts and sustainability of potential management actions and understand, and anticipate ecological, economic and social dynamics at a range of scales from local to national and regional. To make these models most effective, it is important to determine how model characteristics and methods of communicating results influence the model implementation, the nature of the advice that can be provided and the impact on decisions taken by managers. This article presents a global review and comparative evaluation of 35 IEEFMs applied to marine fisheries and marine ecosystem resources to identify the characteristics that determine their usefulness, effectiveness and implementation. The focus is on fully integrated models that allow for feedbacks between ecological and human processes although not all the models reviewed achieve that. Modellers must invest more time to make models user friendly and to participate in management fora where models and model results can be explained and discussed. Such involvement is beneficial to all parties, leading to improvement of models and more effective implementation of advice, but demands substantial resources which must be built into the governance process. It takes time to develop effective processes for using IEEFMs requiring a long-term commitment to integrating multidisciplinary modelling advice into management decision-making. K E Y W O R D Sbio-economic models, comparative model evaluation, fisheries management advice, integrated ecological-economic fisheries models, marine spatial planning and cross-sector management, performance criteria and scales and risks, use and acceptance and implementation and communication and flexibility and complexity | INTRODUCTIONThere is a growing need for tools to evaluate policies and assess tradeoffs in management of marine resources and provision of ecosystem services such as fishing, aquaculture, renewable energy, shipping, conservation and recreation (Cormier, Kannen, Elliott, & Hall, 2015;Degnbol & Wilson, 2008;EU 2014;Langlois, Fréon, Steyer, Delgenés, & Hélias, 2014;White et al., 2012). It is necessary to elaborate and apply common principles and broader, interdisciplinary management evaluation in the use of marine space involving several types of activities and sectors Soma et al., 2013;Stelzenmüller et al., 2013;Sundblad et al., 2014). Policymakers need to know the costs and benefits of conserving ecosystem goods and services to manage them sustainably. Moreover, according to an ecosystembased approach to management, specific pressures, associated uncertainties and risks need to be taken into account (Douvere, 2008;Ehler & Douvere, 2009;Gi...

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“…This result seems counterintuitive. However, studies have shown that the relationship between time spent fishing, fishing gear/method and sustainability is not straightforward [57,58]. In the context of CGSM, time spent fishing depends on many factors, such as the target species, the distance fishers have to go to get to a fishing ground, the period of the year and, undoubtedly, the fishing gear and methods used.…”

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Understanding Artisanal Fishers’ Behaviors: The Case of Ciénaga Grande de Santa Marta, Colombia

2016

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Abstract:We investigate the ecological impact caused by fishing grounds and the fishing gear/methods used by fishers in Ciénaga Grande de Santa Marta (CGSM), an estuarine lagoon located on the Caribbean coast of Colombia. To do so, we build individual and composite ecological sustainable indicators based on the opinions of a group of experienced fishers and a group of scientists. Additionally, we use those indicators to examine the influence of socioeconomic and perceptional factors on fishers' fishing behaviors and how those behaviors may be affecting CGSM fishery resources. Our results suggest that fishers and scientists differ in their opinions about the impact of fishing on CGSM. Additionally, we found that having a higher level of education, sharing household expenses with other family members and spending more hours fishing lead to ecologically-sustainable fishing behavior, while the perception that the government is responsible for CGSM conservation leads to ecologically unsustainable fishing behavior.

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Low impact and fuel efficient fishing—Looking beyond the horizon

Cited by 240 publications

References 70 publications

Experimental study of ghost fishing by gillnets in Laguna Verde Valparaiso, Chile

Experimental study of ghost fishing by gillnets in Laguna Verde Valparaiso, Chile

Integrated ecological–economic fisheries models—Evaluation, review and challenges for implementation

Understanding Artisanal Fishers’ Behaviors: The Case of Ciénaga Grande de Santa Marta, Colombia

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