An approach to design spatial configuration of artificial reef ecosystem

Lan, Chun-Hsiung; Chen, Chung-Chiang; Hsui, Che-Yu

doi:10.1016/j.ecoleng.2004.04.004

Cited by 25 publications

(3 citation statements)

References 18 publications

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“…These were generally non‐biological studies which did not focus on a particular artificial reef, but described outcomes such as meetings or interviews with stakeholders (e.g. Milon, ; Murray, ; Murray & Betz, ), or other areas relevant to artificial reef deployment such as engaging stakeholders in the site selection process (Lan, Chen, & Hsui, ; Shipley & Cowan, ). In these cases, we stated the objective as “not required” (Table ).…”

Section: Review Of the Current Literature In The Use Of Designed Artimentioning

confidence: 99%

Managing the development of artificial reef systems: The need for quantitative goals

et al. 2018

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Fisheries enhancement initiatives are a potentially useful tool for managers to supplement traditional approaches. Habitat‐based enhancements often deploy artificial reefs with the aim to increase the available structure to augment local production, yet current assessment approaches make it difficult to assess whether these reefs achieve pre‐deployment goals. This makes it hard for managers to determine whether artificial reefs could improve their fishery outputs, potentially leading to missed opportunities and reduced production. We reviewed 270 research articles to determine whether existing monitoring studies identify whether artificial reefs meet their pre‐deployment goals, thereby providing some evidence of their suitability for certain fisheries. We found only 62% of these studies clearly articulated the original goals of the reef. Goals were qualitative, and most studies were conducted over insufficient time frames to allow for ecological communities to stabilize and mature. It is therefore difficult to determine the success or failure of many artificial reefs in addressing the management issues for which they were deployed. In the light of these findings, we think the setting of explicit quantitative goals (which may be biological, social or economic), and monitoring the performance of reefs against these goals, could stimulate the broader application of artificial reefs in fisheries management strategies. Such an approach has been successfully adopted in aquaculture‐based fisheries enhancement, and we explain how current evaluation methods such as harvest strategies can be easily adapted to quantitatively monitor artificial reef performance.

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Section: Review Of the Current Literature In The Use Of Designed Artimentioning

confidence: 99%

Managing the development of artificial reef systems: The need for quantitative goals

et al. 2018

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“…The flow is separated by the presence of the AR unit in such a way that a part goes upwards to form an upwelling, which favors the vertical exchange of water [19]. This effect increases the transport of nutrients from the bottom and it also serves to improve their diffusion around the reef area [22,23], causing the attraction of fish. At the same time, the other part of the separated flow will cross the reef, introducing changes in the velocity field.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Analysis of the Velocity Field Inside an Artificial Reef. Application to the Ares-Betanzos Estuary

Caamaño

Galdo

Carballo

et al. 2022

JMSE

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The placement of artificial reef (AR) units on the seabed modifies the velocity field of the water, making the nutrients circulate properly and creating the necessary habitat for the settlement of the desired species. This paper proposes a methodology for determining the circulation in the vicinity of one specific AR unit module previously defined in the existing literature. This has been based on both the application of three-dimensional hydrodynamic criteria and computational fluid dynamics (CFD) together with their validation using towing tank tests. In order to achieve the goals, the starting points are both the initial design of the AR units and the 3D hydrodynamic circulation model in the estuary. The latter predicts the nutrient supply to each module by taking into account the variation of speeds with height. From the vertical profile of circulation velocities, developed for each implantation site, a CFD tool is used to determine the circulation of nutrients in the vicinity of the AR unit, around 5 times the AR size. Then, the results are validated by carrying out towing tank experiments. The main contribution is to combine a circulation model of the estuary together with a CFD model validated with towing tank tests. Although this work was applied to the Ares-Betanzos estuary, it can be extrapolated to other zones worldwide.

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“…The flow fields generated by artificial reefs are considered to be the source of the major benefits that these structures may have on marine environments. By deploying artificial reefs into open biological environments, there will certainly be disruptions to the original smooth flow fields; however, the new currents generated may facilitate salt transport, enriching coastal ecosystems and providing vital sources and an ideal habitat for reef fish [16][17][18]. Different configurations can in fact influence the flows passing through these structures, generating specific currents that could aid the deposition of solid material as well as the exchange of nutrients between multiple layers, with a consequent beneficial aspect for fish expansion [19,20].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of Turbulence Features Induced by Typical Artificial M-Shaped Unit Reefs

et al. 2021

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Artificial reefs are considered to have the function of repairing and improving the coastal habitat and increasing the fishery production, which are mainly achieved by changing the regional hydrodynamic conditions. The characteristics of flow turbulence structure are an important part of the regional hydrodynamic characteristics. Different methods are used to evaluate the performance of artificial reefs according to their shape and the purpose for which the reef was built. For this study, the M-shaped unit reefs, which are to be put into the area of Liaodong Bay, were selected as the research object and have never been fully investigated before. Experimental tests were conducted to assess the effect of these M-shaped artificial reefs on the vertical and longitudinal turbulent intensity under different hydraulic conditions and geometries, and datasets were collected by using the Particle Image Velocimetry technique implemented within the experimental facility. The distribution and variation characteristics of the turbulence intensity were analyzed, and the main results obtained can confirm that in the artificial reef area, there was an extremely clear turbulent boundary. Furthermore, the area of influence of the longitudinal turbulence was identified to be larger than that of the vertical turbulence, and the position where the maximum turbulence intensity appeared was close to where the maximum velocity was measured. Finally, results demonstrate that low turbulence conditions are typically located in front of the unit reef, the general turbulence area is located within the upwelling zone, and the more intense turbulence area is located between the two M-shaped monocases. These results are extremely important, because they provide the local authorities with specific knowledge about what could be the effect of these M-shaped reefs within the area where they will be implemented, and therefore, specific actions can be taken in consideration with the geometrical setup suggested as an optimal solution within this study.

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An approach to design spatial configuration of artificial reef ecosystem

Cited by 25 publications

References 18 publications

Managing the development of artificial reef systems: The need for quantitative goals

Managing the development of artificial reef systems: The need for quantitative goals

Numerical and Experimental Analysis of the Velocity Field Inside an Artificial Reef. Application to the Ares-Betanzos Estuary

An Experimental Investigation of Turbulence Features Induced by Typical Artificial M-Shaped Unit Reefs

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