The role of breakwaters on the rehabilitation of coastal and mangrove forests in West Kalimantan, Indonesia

Akbar, Aji Ali; Sartohadi, Junun; Djohan, Tjut Sugandawaty; Ritohardoyo, Su

doi:10.1016/j.ocecoaman.2017.01.004

Cited by 37 publications

(26 citation statements)

References 31 publications

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“…Furthermore, a much larger area can be influenced and protected using longer reef structures and increasing the vertical relief that, in turn, can elevate the intertidal bed and create other important shallow habitats, like mangroves 63,64 . Breakwater structures have often found to play a successful role to rehabilitating mangrove forests in subtropical regions 65 . Therefore, oyster breakwater reefs not only have the potential for stabilizing the tidal flats but also useful for restoring or enhancing other ecologically important habitats such as salt marsh, offering favorable conditions for many organisms to dwell and grow (so-called Window of Opportunity) 66 .…”

Section: Discussionmentioning

confidence: 99%

Oyster breakwater reefs promote adjacent mudflat stability and salt marsh growth in a monsoon dominated subtropical coast

Chowdhury

Walles

Sharifuzzaman

et al. 2019

Sci Rep

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Oyster reefs have the potential as eco-engineers to improve coastal protection. A field experiment was undertaken to assess the benefit of oyster breakwater reefs to mitigate shoreline erosion in a monsoon-dominated subtropical system. Three breakwater reefs with recruited oysters were deployed on an eroding intertidal mudflat at Kutubdia Island, the southeast Bangladesh coast. Data were collected on wave dissipation by the reef structures, changes in shoreline profile, erosion-accretion patterns, and lateral saltmarsh movement and related growth. This was done over four seasons, including the rainy monsoon period. The observed wave heights in the study area ranged 0.1–0.5 m. The reefs were able to dissipate wave energy and act as breakwaters for tidal water levels between 0.5–1.0 m. Waves were totally blocked by the vertical relief of the reefs at water levels <0.5 m. On the lee side of the reefs, there was accretion of 29 cm clayey sediments with erosion reduction of 54% as compared to control sites. The changes caused by the deployed reefs also facilitated seaward expansion of the salt marsh. This study showed that breakwater oyster reefs can reduce erosion, trap suspended sediment, and support seaward saltmarsh expansion demonstrating the potential as a nature-based solution for protecting the subtropical coastlines.

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Section: Discussionmentioning

confidence: 99%

Oyster breakwater reefs promote adjacent mudflat stability and salt marsh growth in a monsoon dominated subtropical coast

Chowdhury

Walles

Sharifuzzaman

et al. 2019

Sci Rep

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“…Dengan demikian berdasarkan hasil penelitian ini dapat diketahui bahwa fenomena abrasi dan kekeruhan perairan di Tanjung Pontang memang nyata terjadi karena telah berhasil diidentifikasi oleh berbagai macam metode penelitian dan dibuktikan mekanisme transpor sedimennya pada penelitian ini. Dengan demikian usaha mitigasi diperlukan untuk mencegah abrasi di daerah tersebut supaya tidak terus mengikis pesisir utara Kabupaten Serang semakin berkurang luasannya dengan cara penanaman mangrove, (Akbar et al, 2017a;Akbar et al, 2017b;Thampanya et al, 2006;Hashim et al, 2010), pembangunan Alat Pemecah Ombak (APO) (Hartati et al, 2016), dan menggunakan metode eco-hybrid (Indriasari & Akhwady, 2017).…”

Section: Bahan Dan Metodeunclassified

Pemodelan Hidrodinamika Dan Transpor Sedimen Di Sekitar Tanjung Pontang, Kabupaten Serang – Banten

Prihantono

Fajrianto

Kurniadi

2018

Jurnal Kelautan Nasional

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Tanjung Pontang yang terletak di Provinsi Banten mengalami abrasi pantai dan kekeruhan yang cukup serius. Penelitian abrasi pantai ini telah dibuktikan oleh peneliti lain berdasarkan analisis perubahan garis pantai menggunakan citra satelit dengan tahun yang berbeda, namun penelitian dengan menggunakan pemodelan transpor sedimen belum pernah dilakukan di daerah tersebut. Pemodelan numerik hidrodinamika dan transpor sedimen menggunakan perangkat lunak MIKE 21 telah berhasil dilakukan pada penelitian ini untuk membuktikan proses abrasi dan kekeruhan di sekitar Tanjung Pontang. Hasil pemodelan hidrodinamika dengan parameter angin menunjukkan adanya arus sejajar garis pantai pada saat musim barat dan musim timur. Pada saat musim barat arus sejajar pantai di Tanjung Pontang dominan bergerak ke arah timur, sedangkan pada saat musim timur sebagian arus sejajar pantai di Tanjung Pontang bergerak ke arah timur, dan sebagian bergerak ke selatan menuju Teluk Banten. Selain itu analisis perubahan bed level menunjukkan adanya penurunan bed level yang mengindikasikan abrasi di sekitar Tanjung Pontang dan adanya sedimentasi di Sungai Ciujung Baru. Kekeruhan terjadi di sekitar Tanjung Pontang dan Teluk Banten disebabkan oleh karena adanya tingginya sedimen tersuspensi di Sungai Ciujung Lama dan terbawa oleh arus sejajar garis pantai di sekitar Tanjung Pontang.

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“…Abrasion occurring along the coastline of West Kalimantan has damaged mangrove ecosystems up to 20 m/year for the past 40 years. Changes in land use which also contributed to the destruction of mangrove ecosystems were triggered by rapid reclamation, an increase in coconut plantations and settlements since the 1950s, followed by extensive shrimp pond expansion in the early 1980s (Akbar et al 2017). Damage to the mangrove ecosystem plays a role in changing the coastline to reverse (Ritohardoyo et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…201 of 2004 indicates that it is in a severely damaged category, with a density value of <1000 stands/ha. Akbar et al (2017), also added that Karimunting Bay had experienced a period of coastal damage due to considerable abrasion. Abrasion has resulted in damage to mangroves on the West Kalimantan coast.…”

Section: Introductionmentioning

confidence: 99%

Potentials of mangrove ecosystem as storage of carbon for global warming mitigation

et al. 2020

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Abstract. Dinilhuda A, Akbar AA, Jumiati, Herawati H. 2020. Potential of mangrove ecosystem as carbon storage for global warming mitigation. Biodiversitas 21: 5353-5362. The mangrove ecosystem in Karimunting Bay of West Kalimantan, Indonesia is one of the conservation areas with an area of 138.2 ha. Vegetation making up of that mangrove ecosystem is dominated by Avicennia marina. The existence of mangroves has a role in carbon storage. The ability to store carbon in mangrove forest ecosystems is four times greater than in other tropical forests around the world. Mangrove stems have the greatest ability in storing carbon by up to 55.52%. The research objective was to analyze the potential for carbon storage in the fringe mangrove ecosystem which was dominated by A. marina. This research method is based on a survey of vegetation density in the field. The survey was carried out in Karimunting Bay in three parts of the bay, north, central, and south. Each part of the bay consists of two locations, namely at the front of the breakwater towards the sea and behind the breakwater towards the land. Each location consisted of a plot of 10 x 10 with five replications. The vegetation parameters measured are the types of growth forms, the mangrove ecosystem species, and the diameter and height of the trees, as well as environmental parameters (pH, temperature, and salinity). Destructive method was used on A. marina stems for estimating analysis of mangrove carbon storage in the laboratory. A. marina stem samples were used to test the carbon content with LOI (Lost on Ignition) analysis. Analysis of changes in mangrove area is based on the 2009 and 2019 landscape images. The results show that the mangrove ecosystem of Karimunting Bay has a total density of 177,480 individuals/ha. The amount of carbon storage reached 99,231 mg/ha in 2019 and predictions of total carbon storage over the last 10 years are as much as 13,717,951 tons. Deposits of carbon in fringe mangrove illustrate the carbon dioxide absorption potential of 36,390,608 tons of CO2. The amount of CO2 absorption in fringe mangrove ecosystem type plays a role in reducing greenhouse gas (GHG) emissions with a conditional target according to the Nationally Determined Contribution (NDC) in 2030 of 834 million tons of CO2 to prevent temperature increases.

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The role of breakwaters on the rehabilitation of coastal and mangrove forests in West Kalimantan, Indonesia

Cited by 37 publications

References 31 publications

Oyster breakwater reefs promote adjacent mudflat stability and salt marsh growth in a monsoon dominated subtropical coast

Oyster breakwater reefs promote adjacent mudflat stability and salt marsh growth in a monsoon dominated subtropical coast

Pemodelan Hidrodinamika Dan Transpor Sedimen Di Sekitar Tanjung Pontang, Kabupaten Serang – Banten

Potentials of mangrove ecosystem as storage of carbon for global warming mitigation

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