Root Density Analysis and Wave Attenuation Ability of Rhizophora Species at Kemaman, Terengganu

Ismail, Isfarita; Husain, Mohd Lokman; Satyanarayana, Behara; Ibrahim, Salihu; Zakaria, Rozaimi

doi:10.26480/esmy.01.2019.18.24

Cited by 4 publications

(6 citation statements)

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“…However, the change in density is very drastic from the bottom layer (0-20 cm) to the next layer above it, (20-40 cm). Table 1 shows the root density (in cm 3 ) for each 20cm level from the ground for each plot from the front to inside the mangrove forest.…”

Section: 1root Density Variabilitymentioning

confidence: 99%

“…The similar method was done for Nypa fruticans at Tumpat, Kelantan [2] and for Rhizophora sp. at Kemaman, Terengganu [3].The Mazda's model was used to find the percentage of wave reduction as these waves enter the mangrove forest. The study of wave reduction and root density vis-a-vis their vertical and horizontal variations were analyzed in detail.…”

Section: Introductionmentioning

confidence: 99%

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Wave Attenuation and Root Density Analysis of Bruguiera Parviflora at Larut Matang, Perak

Ismail

Husain

Zakaria

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Mangrove forests cover the upper intertidal zones of the tropical and subtropical shorelines. They play an important part in ecological, economical, physical, biological, chemical and geomorphological aspects. In Malaysia there are several small rivers and estuaries which are frequented by fishing boats. The present study deals with the physical processes involved in the dissipation of waves from boat wakes by the roots of mangrove vegetations. This study focuses on monostand of Bruguira parviflora at Larut Matang, Taiping, Perak. This study used Mazda’s model to find the percentage of wave reduction as the waves enter the mangrove forest. The main aim of this study is to quantify the wave attenuation capability of Bruguira parviflora and identify the most suitable mangrove vegetation that can be used for erosion control from wave action. For this purpose, a relationship between wave attenuation and vegetation density has been analyzed. The variations in the horizontal and vertical trends of the vegetation were studied to analyze the root density and its impact on the wave reduction. It is found that the root density decrease with increasing distance.

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Section: 1root Density Variabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wave Attenuation and Root Density Analysis of Bruguiera Parviflora at Larut Matang, Perak

Ismail

Husain

Zakaria

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Other affecting factors were collected as mentioned in their method; however, these factors were not well-presented in the result and discussion sections as the focus was only on the width of mangroves. Ismail et al (2019) studied wave attenuation and mangrove density in terms of root density [68]. The Rhizophora species attributing to complex aerial root system was studied.…”

Section: Field Studiesmentioning

confidence: 99%

Mangroves As Coastal Bio-Shield: A Review of Mangroves Performance in Wave Attenuation

Kamil

Takaijudin

Hashim³

2021

Civ Eng J

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Mangroves have been recognized as soft structures that provide coastline protection. The capability of dampening waves helps minimize destruction from catastrophic events including erosive wave attacks, torrential storms, and tsunamis. Mangroves act as the first line of coastal defense in natural tragedies such as during the Super Typhoon Haiyan 2013 and Indian Ocean Tsunami 2004, whereby the leeward mangrove area encountered less damage than the unprotected area. This has further brought the attention of researchers to study the attenuation performance of these coastal vegetations. Based on an extensive literature review, this paper discusses the attenuation mechanism of mangroves, the factors influencing the dissipation performance, studies on mangrove dissipation via different approaches, the dissipation efficiency, mangrove conservation and rehabilitation efforts in Malaysia and implementation of mangrove as coastal bio-shield in other countries. The study highlights that mangrove parameters (such as species, width, density etc.) and wave parameters (such as wave period and incident wave height) are among the contributing factors in mangroves-induced wave attenuation, with different efficiency rates performed by different mangroves and waves parameters. Towards that end, several improvements are proposed for future research such as to incorporate all influencing dissipation factors with specific analysis for each species of mangroves, to perform validation on the studied mangroves attenuation capacity in different settings and circumstances, as well as to address the extent of protection by the rehabilitated mangroves. A systematic and effective management strategy incorporating ecological, forestry, and coastal engineering knowledge should be considered to ensure a sustainable mangroves ecosystem and promising coastline protection by mangroves. Doi: 10.28991/cej-2021-03091772 Full Text: PDF

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“…Microwave can kill various microorganisms. The thermal effect and mechanism of microwave have been a fact which is widely accepted by people, but there still exists the big dispute to the mechanism of non-thermal effects of electromagnetic (Liboff and Mcleod, 1988;Ismail et al, 2019). The work describes the sterilization effect of microwave to domestic sewage and analyze the phenomena and mechanism of microwave sterilization from the experimental and theoretical .…”

Section: Urban Domestic Sewage Impactmentioning

confidence: 99%

The Effect and Mechanism of Urban Domestic Sewage Secondary Sterilization by Microwave

Zhou¹

2019

Appl. Ecol. Env. Res.

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The interactions between electromagnetic field and the biological system can lead to the change of biological morphology, structure, function and other aspects at the different levels of biological targets. The domestic sewage is secondarily disinfected using continuous electromagnetic waves, the microscopic molecules have a certain dipole-moment and the biological molecular aggregates with dielectric properties of the cell may generate dielectric loss under the effect of the applied electromagnetic field. The thermal effect will be produced by putting the microwave energy into the heat of irregular movement which increases biological system's temperature. Under the influence of an applied electromagnetic field, the membrane potentially undergoes conformational changes that would affect K + ion, Na + ion channels open and make the voltage-dependant Ca 2+ ion open, the high concentration of Ca 2+ ion of the membrane into the cell along the potential gradient, which leads to cell death, resulting in the biological non-thermal effects, the greater the changes of cellular transmembrane voltage, the higher the rate of cell death. The experiment results show that the microwave secondary sterilization has a good sterilizing effect, the method has the advantages of high efficiency, low cost, simple operation, easy automation, without adding any substance and does not produce any secondary pollution, etc.

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Root Density Analysis and Wave Attenuation Ability of Rhizophora Species at Kemaman, Terengganu

Cited by 4 publications

References 0 publications

Wave Attenuation and Root Density Analysis of Bruguiera Parviflora at Larut Matang, Perak

Wave Attenuation and Root Density Analysis of Bruguiera Parviflora at Larut Matang, Perak

Mangroves As Coastal Bio-Shield: A Review of Mangroves Performance in Wave Attenuation

The Effect and Mechanism of Urban Domestic Sewage Secondary Sterilization by Microwave

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