Long-term coastal erosion assessment along the coast of Karnataka, west coast of India

Sowmya, K.; Sri, M. Dhivya; Bhaskar, Aparna S.; Jayappa, K. S.

doi:10.1016/j.ijsrc.2018.12.007

Cited by 24 publications

(9 citation statements)

References 22 publications

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“…EE has been employed for developing management strategies in various fields; for example, promotion of sustainable agriculture development [8], control of erosion on mountainous areas [9], conservation of karst-related ecosystems [10], mangrove restoration [3], reduction of environmental impacts caused by built infrastructure, or provision of a more natural habitat for species in coastal protection [11][12][13][14][15]. Recently, EE has been highly likely to become an integral part of viable solutions for stabilizing eroded muddy coasts (EMCs) [16,17] because other solutions such as the construction of sea dykes, groins, and revetments cause negative effects on marine and coastal hydro-dynamics [18][19][20][21]. Managed realignment and the absence of active intervention are not popular because these two solutions require the protection of coastal areas as part of erosion control and exclude economic development from eroded areas [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Ecological Engineering and Restoration of Eroded Muddy Coasts in South East Asia: Knowledge Gaps and Recommendations

et al. 2021

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Ecological engineering (EE) was employed for developing strategies for stabilizing eroded muddy coasts (EMCs). However, there was a limited analysis of these EE strategies with respect to design, performance, and lessons learned. This study employed a critical review for addressing the limitations. There were four EE models designed with different restoration interventions for stabilizing EMCs. The models using active interventions have not been cost-effective in controlling erosion because the interventions failed to achieve their goals or were costly and unnecessary. Of the two passive intervention models, the one with structures constructed from onshore proved to be more cost-effective in terms of construction costs, the survival rate of transplanted seedlings, and levels of sea mud accumulation. Interventions with adequate consideration of the muddy coastal ecological processes and the ecological reasoning for the positioning of these interventions play a crucial role in stabilizing EMCs. A passive restoration model using gradually expanded interventions should be promoted in order to ensure sustainable management of EMCs in the future.

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Section: Introductionmentioning

confidence: 99%

Ecological Engineering and Restoration of Eroded Muddy Coasts in South East Asia: Knowledge Gaps and Recommendations

et al. 2021

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“…To assess shoreline movement patterns along the BPK coasts, 442 and 220 transects with a spacing of 100 m were developed perpendicular to the WBK and EBK coasts, respectively (Figure 1). We applied the well‐known algorithms Net Shoreline Movement (NSM), End Point Rate (EPR), and Linear Regression Rate (LRR) that are often used for shoreline dynamic studies (Awad & El‐Sayed, 2021; Bheeroo et al, 2016; Bidorn et al, 2020; Gibbs et al, 2019; Phanomphongphaisarn et al, 2020; Ruggerio et al, 2013; Sowmya et al, 2019). The NSM is used to report the distance between the oldest and latest shorelines for a particular transect, while the EPR is the rate of shoreline change calculated by dividing shoreline movement by the number of years elapsed between the two shoreline positions (Himmelstoss et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…Rising sea level is now a major factor accelerating shoreline recession in many deltas around the world (Boateng et al, 2017; Cai et al, 2009; Fletcher et al, 2012; Islam et al, 2015; Thieler & Hammar‐Klose, 1999, 2000). Unfortunately, human activities such as groundwater and/or hydrocarbon extraction, damming, water management, land use changes, coastal development, etc., have also caused flooding and shoreline retreat during the past half century (Alberico et al, 2012; Anthony et al, 2015; Besset et al, 2019; Bi et al, 2014; Bidorn & Rukvichai, 2018; Bidorn, Solk, et al, 2021; Cai et al, 2019; Cui & Li, 2011; Day et al, 2016; Häglund & Svensson, 2002; Hapke et al, 2006; Jaskólski et al, 2018; Li & Damen, 2010; Ma et al, 2019; Mahapatra et al, 2015; Maiti & Bhattacharya, 2009; Martínez et al, 2018; Ruggerio et al, 2013; Sowmya et al, 2019; Tessler et al, 2018; Wang et al, 2019; Yang et al, 2011). Two‐thirds of the world’s largest cities are situated on coasts, and about 60% of the world’s population live in the coastal zone (Cai et al, 2009; Cicin‐Sain et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Seven decades of shoreline changes along a muddy mangrove coastline of the Upper Gulf of Thailand

Sok

Bidorn

Burnett

et al. 2022

Earth Surf Processes Landf

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This study evaluates the historical coastal change and development along the eastern coastline of the Upper Gulf of Thailand between 1953 and 2019 based on a series of aerial photographs and satellite images. Long-term ($70 years) and short-term ($10 years) shoreline movement rates were analysed using the Digital Shoreline Analysis System (DSAS). Results of this analysis indicate that the shoreline along the western coast (WBK) of the Bang Pakong River mouth has undergone severe coastal degradation, with a land loss of about 980 ha over the last seven decades. Meanwhile, the eastern coastline (EBK) has developed continuously over this time span, resulting in a land growth of about 552 ha. Based on historical shorelines recorded since 1954, the shoreline recession along the WBK coast accelerated over five decades. The average shoreline change rate reached approximately À9 m/year in 2002 and is shown to be related to land subsidence, which was due to groundwater

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“…The restoration has been undertaken using ecological engineering solutions [34][35][36] or engineering solutions [37][38][39][40]. Engineering solutions negatively affected marine and coastal hydro-dynamics [37][38][39][40]. Ecological engineering solutions have had limited success in controlling the erosion in South East Asia [41].…”

Section: Current Restoration Of Eroded Mangrove Forests and Remaining Challengesmentioning

confidence: 99%

Configuration of Allocated Mangrove Areas and Protection of Mangrove-Dominated Muddy Coasts: Knowledge Gaps and Recommendations

Phong

Luom

2021

Sustainability

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Mangrove-dominated muddy coasts have been allocated for developing livelihood models, particularly in developing countries. Uncontrolled allocation causes the mangrove forests to be vulnerable and even severely eroded. Restoration of vulnerable and eroded coastal areas has been merely conservation-driven, leaving livelihood-oriented mangrove forests unprotected. As a consequence, mangrove-dominated muddy coasts have not been well-protected. How livelihood-oriented mangrove forests are configured towards protecting coasts and protecting local livelihoods remains a challenge. This study employed a critical review for addressing this matter. The results reveal that there is limited practical knowledge of configuring livelihood-oriented models for protecting the coasts. The configuration process reported in this study is merely based on technical recommendations in South East Asia to date. The recommended configuration commences with the first stage of voluntarily designating a certain percentage of allocated forests on the seaward side to protect coasts, relocating livelihood models in the gaps among current stands of mangrove forests landward. Abandoned ponds are ecologically restored using sediment trapping structures for providing suitable substrate for promoting regrowth of local mangrove species as the second stage, followed by designation of an appropriate percentage as mangrove belts on the seaward side. The two-step configuration is highly likely to be replicable and applicable nationally and regionally due to full consideration of different political, sociocultural, and environmental characteristics in Vietnam and Indonesia.

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Long-term coastal erosion assessment along the coast of Karnataka, west coast of India

Cited by 24 publications

References 22 publications

Ecological Engineering and Restoration of Eroded Muddy Coasts in South East Asia: Knowledge Gaps and Recommendations

Ecological Engineering and Restoration of Eroded Muddy Coasts in South East Asia: Knowledge Gaps and Recommendations

Seven decades of shoreline changes along a muddy mangrove coastline of the Upper Gulf of Thailand

Configuration of Allocated Mangrove Areas and Protection of Mangrove-Dominated Muddy Coasts: Knowledge Gaps and Recommendations

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