Mitigating the environmental effects of mariculture through single-point moorings (SPMs) and drifting cages

Goudey, Clifford A.

doi:10.1006/jmsc.2000.1033

Cited by 15 publications

(8 citation statements)

References 14 publications

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“…Traditional multi‐point mooring cages are more complicated to install, 83 and the activity range is more fixed, factors that easily cause local marine environmental pollution and thus are not conducive to the production of high quality aquatic products 50 . Single‐point mooring, in contrast, can effectively increase the activity area of the farming facilities as well as significantly reduce the deposition of feed residues, fish excreta and other waste on the seabed, and requires significantly lower hardware, installation and maintenance costs 59,84 . Therefore, single‐point mooring has been recommended as an alternative to traditional multi‐point mooring 49 .…”

Section: Research Progressmentioning

confidence: 99%

“…50 Singlepoint mooring, in contrast, can effectively increase the activity area of the farming facilities as well as significantly reduce the deposition of feed residues, fish excreta and other waste on the seabed, and requires significantly lower hardware, installation and maintenance costs. 59,84 Therefore, single-point mooring has been recommended as an alternative to traditional multi-point mooring. 49 At present, the world's circular farming facilities generally adopt multi-point moorings, while shipshaped farming facilities mostly adopt single-point moorings.…”

Section: Mooringmentioning

confidence: 99%

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Offshore aquaculture in China

Liu

Cui

et al. 2023

Reviews in Aquaculture

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The mariculture industry is planning to move offshore due to the decline of China's inshore fishery resources, the deterioration of the water environment, inefficient industrial structure and other influencing factors. This article first analyses the imbalance between supply and demand of aquatic products, the development space of offshore aquaculture and the supporting policies, thereby concluding that China has significant potential to develop offshore aquaculture. Subsequently, the development status of offshore aquaculture in China is examined. The research progress of China's offshore aquaculture facilities, marine hydrology, environmental carrying capacity, aquaculture technology and the status of aquaculture operation equipment are also summarized. Furthermore, the problems existing in the development of offshore aquaculture are pointed out. On this basis, future development ideas for China's offshore aquaculture can be planned in terms of sea area layout, optimized and improved seed production systems, and research and development of offshore aquaculture technology and pellet feed. The relationship between the development of offshore aquaculture and ecological protection should be coordinated. Additionally, an energy security system can be built based on clean energy, and the development of related industries can be driven through the complementary industrial division of labour. The present work aims to provide a reference for promoting the development of offshore aquaculture in China.

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Section: Research Progressmentioning

confidence: 99%

Section: Mooringmentioning

confidence: 99%

Offshore aquaculture in China

Liu

Cui

et al. 2023

Reviews in Aquaculture

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“…Feed can transfer diseases and has to be monitored [37]. In marine aquaculture, the design, like single point mooring and siting of pens, can be used to reduce disease likelihoods [82].…”

Section: Preventing Diseasesmentioning

confidence: 99%

Taxonomy of Means and Ends in Aquaculture Production—Part 1: The Functions

Björnsdóttir

Oddsson

Thorarinsdottir

et al. 2016

Water

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Abstract:The aquaculture sector has been increasing its share in the total fish production in the world. Numerous studies have been published about aquaculture, introducing a variety of techniques and methods that have been applied or could be applied in aquaculture production systems. The purpose of this study is to present a systemic overview of the functions of aquaculture production systems. Each function of an aquaculture system is applied to carry out a certain purpose. The results are divided into three sets of functions: input, treatment, and output. Input functions deal with what happens before the rearing area, treatment functions are about what happens inside the rearing area, and output functions is what comes out of the system. In this study, five input functions, ten treatment functions, and five output functions are indentified. For each function the controlling parameters or indicators were identified and then a list of possible methods or technological solutions in order to carry out the function was compiled. The results are presented in a system map that aggregates all functions used in different types of aquaculture systems along with their methods of solution. This is the first of four articles that together generate taxonomy of both means and ends in aquaculture. The aim is to identify both the technical solutions (means) that solve different functions (ends) and the corresponding functions. This article is about the functions.

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“…Aquaculture has been the world's fastest growing food production sector in the past 40 years. With over one-third of aquaculture produced in marine waters and this proportion increasing, concerns about pollution and health have increased markedly [1]. The deteriorated marine environment around the fish farm has been criticized by environmentalists because the potential waste pollution, such as uneaten feed and fish wastes, accumulates on the seabed and causes water contamination [2].…”

Section: Introductionmentioning

confidence: 99%

“…To reduce environmental stress, an alternative approach is to allow cages to move in response to the environment. For instance, the use of a single point mooring (SPM) would allow the aquaculture system to maintain a watch circle where the position of the cage depends on the sum of the environmental forces [1].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of a Single-Point Mooring Gravity Fish Cage With Different Deformation-Suppression Methods

Cheng

Aarsæther

et al. 2020

Journal of Offshore Mechanics and Arctic Engineering

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Compared with the multipoint mooring fish cage, the single-point mooring (SPM) fish cage can spread out the fish wastes and uneaten feeds in a larger area, and it can also prevent the local environment from being overwhelmed. Thus, it has attracted much attention recently. In this research, different deformation-suppression methods are applied to the SPM system with a typical Norwegian fish cage aiming to increase the cultivation volume under the action of current and/or wave loads. A well-validated software, fhsim, is used to conduct the full-scale numerical study. The effects of the three deformation-suppression methods, i.e., (i) adding the lower bridles, (ii) adding the frontal rigid frame and (iii) adding the trawl doors, are analyzed under pure current and combined wave–current conditions. The results indicate that all the three deformation-suppression methods can improve the cultivation volume at least by 32% compared to the original SPM fish cage when the current velocity is larger than 0.5 m/s. In addition, moving the conjunction point close to the bottom ring can bring a positive effect on the cultivation volume maintaining with an only small increment in the tension force. This study can provide practical advice and useful guides for the SPM fish cage design.

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Mitigating the environmental effects of mariculture through single-point moorings (SPMs) and drifting cages

Cited by 15 publications

References 14 publications

Offshore aquaculture in China

Offshore aquaculture in China

Taxonomy of Means and Ends in Aquaculture Production—Part 1: The Functions

Numerical Study of a Single-Point Mooring Gravity Fish Cage With Different Deformation-Suppression Methods

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