Wave attenuation in mangroves: A quantitative approach to field observations

Horstman, Erik; Dohmen-Janssen, Catarine M.; Narra, Pedro; Berg, N.J.F. van den; Siemerink, Martijn; Hulscher, Suzanne J.M.H.

doi:10.1016/j.coastaleng.2014.08.005

Cited by 186 publications

(126 citation statements)

References 27 publications

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“…During the past decades, most researchers focused on the wave attenuation by the submerged and emerged vegetation canopy rooted at the bottom, using field observation (e.g., Knutson et al, 1982;Mӧller et al, 1999;Bradley and Hauser, 2009;and Horstman et al, 2014), lab experiments (e.g., Fonseca and Cahalan, 1992;Augustin et al, 2009;Stratigaki et al, 2011;Koftis et al, 2013;Anderson and Smith, 2014;Hu et al, 2014;Ozeren et al, 2014;Wu and Cox, 2015;Wang et al, 2016), numerical methods (e.g., Li and Xie, 2011;Ma et al, 2013;Maza et al, 2013;Marsooli and Wu, 2014;Zhu and Chen, 2015;Chakrabarti et al, 2016), and analytical study.…”

Section: Introductionmentioning

confidence: 99%

Three-Layer Analytical Solution for Wave Attenuation by Suspended and Nonsuspended Vegetation Canopy

Zhu

Zou²

2017

Int. Conf. Coastal. Eng.

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A generalized three-layer analytical solution for the wave attenuation by suspended and non-suspended vegetation canopy is developed in this study. The analytical solution reduces to the two-layer analytical solution by Kobayashi et al. (1993) for the non-suspended vegetation canopy rooted at the sea bed. The present theory is verified using laboratory experiments and field observations of a suspended and non-suspended as well as emerged and submerged vegetation canopy. The wave attenuation increase with the drag coefficient, blade diameter and length, canopy density and length, the elevation of the bottom of the canopy and the incident wave height. The influences of wave frequency and water depth on wave attenuation are more complex. They affect the wave attenuation mainly by changing the wave flow velocity encountered by the vegetation canopy. As a result, the canopy vertical position has significant impact on the relationship between the wave attenuation and wave frequency.

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Section: Introductionmentioning

confidence: 99%

Three-Layer Analytical Solution for Wave Attenuation by Suspended and Nonsuspended Vegetation Canopy

Zhu

Zou²

2017

Int. Conf. Coastal. Eng.

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“…(2) using four wave reduction rates for four separate locations spaced 1, 40, 180, 290 and 350 m. Different reduction rates r have been applied. Wave reduction rates as a function of per meter mangrove forest vary widely depending on the location: 0.001-0.004 per meter for Vinh Quang coast, Vietnam (Mazda et al 2006) 0.004-0.012 per meter for Red River Delta, Vietnam (Quartel et al 2007) 0.002-0.014 per meter for Katang/Pailan, Thailand (Horstman et al 2012) To determine the design dyke height, the wave overtopping rate was calculated based on the equation given in EAK (2002):…”

Section: Methodsmentioning

confidence: 99%

Dyke design, floodplain restoration and mangrove co-management as parts of an area coastal protection strategy for the mud coasts of the Mekong Delta, Vietnam

Albers¹,

Schmitt

2015

Wetlands Ecol Manage

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The dynamic coastlines in the Lower Mekong Delta of Vietnam are threatened by the impacts of climate change, particularly by the increased intensity and frequency of storms and floods, as well as by rising sea levels. The most effective coastal protection systems consist of different elements arranged in series, for instance natural floodplains vegetated with mangroves and a sound dyke line. However, the unsustainable use of natural resources and development in the coastal zone are threatening the protection function of the mangrove forest belt. In sites where severe erosion has destroyed the mangrove belt, restoration of floodplains and mangrove rehabilitation is only possible after the wave energy has been reduced by physical barriers. This can be achieved with bamboo fences, which reduce erosion and stimulate sedimentation. Restoration of the eroded floodplains creates the preconditions for rehabilitation of the destroyed mangrove forest. Mangrove management is an important element of an area costal protection strategy.

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“…Wave attenuation is an important focus in contemporary mangrove ecosystem service research, with numerous laboratory and field studies quantifying the processes contributing to wave attenuation, and the degree of attenuation under different hydrodynamic and meterological conditions [6,51]. An appreciation of hydrodynamic energy attenuation services by mangrove vegetation was only interpreted in one report in 1875, where mangroves in Tanzania were observed to "grasp the depths and grapple with the floods" in the Rufiji Delta [52] (p. 183).…”

Section: Wave Attenuationmentioning

confidence: 99%

Ecosystem Services and Disservices of Mangrove Forests: Insights from Historical Colonial Observations

Friess

2016

Forests

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Ecosystem services are now strongly applied to mangrove forests, though they are not a new way of viewing mangrove-people interactions; the benefits provided by such habitats, and the negative interactions (ecosystem disservices) between mangroves and people have guided perceptions of mangroves for centuries. This study quantified the ecosystem services and disservices of mangroves as written by colonial explorers from 1823-1883 through a literature survey of 96 expedition reports and studies. Ecosystem disservices were most commonly discussed (60%), with settlers considering mangroves as reservoirs of diseases such as malaria, with wide-ranging implications, such as the global drainage of wetlands in the 19th-20th centuries. Multiple ecosystem services were discussed, especially provisioning services for export, representing colonial views of new lands as ripe for economic use. Interestingly, regulating services of mangroves such as erosion control and sediment accretion that are a focus of much contemporary research were recognized as early as 1865. This study shows that the ecosystem service paradigm has a long history in mangroves. We should not underestimate mangrove ecosystem disservices, and how contemporary perceptions of mangroves may be influenced by such historical viewpoints. Archival materials provide a rich resource to study human-environment interactions, and how they change through time.

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Wave attenuation in mangroves: A quantitative approach to field observations

Cited by 186 publications

References 27 publications

Three-Layer Analytical Solution for Wave Attenuation by Suspended and Nonsuspended Vegetation Canopy

Three-Layer Analytical Solution for Wave Attenuation by Suspended and Nonsuspended Vegetation Canopy

Dyke design, floodplain restoration and mangrove co-management as parts of an area coastal protection strategy for the mud coasts of the Mekong Delta, Vietnam

Ecosystem Services and Disservices of Mangrove Forests: Insights from Historical Colonial Observations

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