scholarly journals Incorporating feasibility and collaboration into large-scale planning for regional recovery of coral reef fisheries

2018 ◽  
Vol 604 ◽  
pp. 211-222 ◽  
Author(s):  
KR Jones ◽  
JM Maina ◽  
S Kark ◽  
TR McClanahan ◽  
CJ Klein ◽  
...  
Keyword(s):  
Coral Reef ◽  
Large Scale ◽  
Coral Reef Fisheries

scholarly journals Stokes drift through corals

2021 ◽  
Author(s):  
Joseph J. Webber ◽  
Herbert E. Huppert
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Porous Layer ◽  
Large Scale ◽  
Fluid Layer ◽  
Ocean Waves ◽  
Stokes Drift ◽  
Inviscid Fluid ◽  
Porous Bed ◽  
Vertical Drift

AbstractMotivated by shallow ocean waves propagating over coral reefs, we investigate the drift velocities due to surface wave motion in an effectively inviscid fluid that overlies a saturated porous bed of finite depth. Previous work in this area either neglects the large-scale flow between layers (Phillips in Flow and reactions in permeable rocks, Cambridge University Press, Cambridge, 1991) or only considers the drift above the porous layer (Monismith in Ann Rev Fluid Mech 39:37–55, 2007). Overcoming these limitations, we propose a model where flow is described by a velocity potential above the porous layer and by Darcy’s law in the porous bed, with derived matching conditions at the interface between the two layers. Both a horizontal and a novel vertical drift effect arise from the damping of the porous bed, which requires the use of a complex wavenumber k. This is in contrast to the purely horizontal second-order drift first derived by Stokes (Trans Camb Philos Soc 8:441–455, 1847) when working with solely a pure fluid layer. Our work provides a physical model for coral reefs in shallow seas, where fluid drift both above and within the reef is vitally important for maintaining a healthy reef ecosystem (Koehl et al. In: Proceedings of the 8th International Coral Reef Symposium, vol 2, pp 1087–1092, 1997; Monismith in Ann Rev Fluid Mech 39:37–55, 2007). We compare our model with field measurements by Koehl and Hadfield (J Mar Syst 49:75–88, 2004) and also explain the vertical drift effects as documented by Koehl et al. (Mar Ecol Prog Ser 335:1–18, 2007), who measured the exchange between a coral reef layer and the (relatively shallow) sea above.

scholarly journals Commercial coral-reef fisheries across Micronesia: A need for improving management

Coral Reefs ◽  
2011 ◽  
Vol 31 (1) ◽  
pp. 13-26 ◽  
Author(s):  
P. Houk ◽  
K. Rhodes ◽  
J. Cuetos-Bueno ◽  
S. Lindfield ◽  
V. Fread ◽  
...  
Keyword(s):  
Coral Reef ◽  
Coral Reef Fisheries

scholarly journals Publisher Correction: Productive instability of coral reef fisheries after climate-driven regime shifts

2018 ◽  
Vol 3 (3) ◽  
pp. 502-502 ◽  
Author(s):  
James P. W. Robinson ◽  
Shaun K. Wilson ◽  
Jan Robinson ◽  
Calvin Gerry ◽  
Juliette Lucas ◽  
...  
Keyword(s):  
Coral Reef ◽  
Regime Shifts ◽  
Coral Reef Fisheries

Effectiveness of small locally-managed marine protected areas for coral reef fisheries management in the Philippines

2019 ◽  
Vol 179 ◽  
pp. 104831 ◽  
Author(s):  
Richard N. Muallil ◽  
Melchor R. Deocadez ◽  
Renmar Jun S. Martinez ◽  
Wilfredo L. Campos ◽  
Samuel S. Mamauag ◽  
...  
Keyword(s):  
Coral Reef ◽  
Protected Areas ◽  
Fisheries Management ◽  
Marine Protected Areas ◽  
The Philippines ◽  
Coral Reef Fisheries

scholarly journals Improved Coastal Erosion Prevention Using a Hybrid Method with an Artificial Coral Reef: Large-Scale 3D Hydraulic Experiment

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2801
Author(s):  
Taeyoon Kim ◽  
Seungil Baek ◽  
Yongju Kwon ◽  
Jooyong Lee ◽  
Sung Min Cha ◽  
...  
Keyword(s):  
Coral Reef ◽  
Hybrid Method ◽  
Coastal Erosion ◽  
Large Scale ◽  
Local Scour ◽  
Return Flow ◽  
Structural Failure ◽  
Submerged Breakwater ◽  
Sediment Transportation ◽  
Erosion Mitigation

Coastal erosion, a worldwide social issue, has garnered substantial attention. Numerous methods have been implemented to control coastal erosion problems; however, the presence of rigid structures limits erosion mitigation, thereby causing various challenges. For instance, in the case of submerged breakwaters, local scour in front of the structure and scour caused by the flow occurring in open inlets affect the subsidence and stability of the structure and can also cause structural failure. To solve these problems, this paper proposes a hybrid method of using a submerged breakwater with an artificial coral reef installation; further, this study evaluates the attenuation of waves and mitigation of sediment transportation through large-scale 3D hydraulic experiments. We found that the hybrid method with an artificial coral reef installed in the open inlet shows excellent wave control and plays a clearly beneficial role in the advancement of the shoreline. The artificial coral reef method reduced the return flow generated by the drag force at the breakwater shoulder and open inlet. In addition, scour at the breakwater shoulder was inhibited by collecting the sand escaping offshore. Simultaneously, scour at the open inlet was also mitigated. The application of the hybrid method compensated for the problems caused by local scour and erosion in the submerged breakwater, thereby leading to the improvement of its function. Therefore, the hybrid method proposed in this paper was determined to be applicable not only for submerged breakwaters, but also for various structures for controlling coastal erosion.

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