Rapid formation of marsh-edge cliffs, Jiangsu coast, China

Zhao, Yangyang; Yu, Qian; Wang, Dandan; Wang, Ya Ping; Wang, Yunwei; Gao, Shu

doi:10.1016/j.margeo.2017.02.001

Cited by 28 publications

(12 citation statements)

References 71 publications

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“…Previous studies assessing retreat of the cliff, show a clear relation between wave power and cliff retreat (Bendoni et al., 2016; Leonardi & Fagherazzi, 2014; Leonardi et al., 2016; Marani et al., 2011; Zhao, Yu et al., 2017). Eroded sediments originating from the cliff can contribute to growth of vegetation in front of the cliff, thereby stimulating short‐term expansion (Mariotti, 2020).…”

Section: Introductionmentioning

confidence: 90%

Modeling Decadal Salt Marsh Development: Variability of the Salt Marsh Edge Under Influence of Waves and Sediment Availability

Willemsen

Smits

Borsje

et al. 2022

Water Resources Research

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Section: Introductionmentioning

confidence: 90%

Modeling Decadal Salt Marsh Development: Variability of the Salt Marsh Edge Under Influence of Waves and Sediment Availability

Willemsen

Smits

Borsje

et al. 2022

Water Resources Research

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“…The most important ways that vegetation affects bank stability are by increasing the resistance to flow erosion and increasing the strength of the bank material, which retards mass movement (e.g., Li et al 1991;Micheli and Kirchner 2002;Danjon and Reubens 2008;Chen et al 2011;Francalanci et al 2013;Zhao et al 2017). It has been noted in previous studies that root density is important in increasing bank sediment stability, therefore, root density data are examined against shear strength and erosion threshold data.…”

Section: The Relationship Between Bank Sediment Stability and Root Symentioning

confidence: 99%

“…Bank failure takes place both in high-energy and low-energy saltmarshes under erosion, despite prevailing hydrodynamic conditions, because the basic mechanisms are similar (Tal and Paola 2010;Kearney and Fagherazzi 2016). In general terms, the presence of vegetation increases the resistance of bank sediments to erosion and consequently decreases the rate of bank face retreat and the frequency of bank failure (e.g., Van Eerdt 1985a; Danjon et al 2007;De Baets et al 2007;Chen et al 2012;Zhao et al 2017;Best et al 2018;Gong et al 2018), thereby stabilising tidal creek size.…”

Section: Introductionmentioning

confidence: 99%

Controls on creek margin stability by the root systems of saltmarsh vegetation, Beaulieu Estuary, Southern England

Thompson

Collins

2019

Anthropocene Coasts

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The retreat of cliffs (lateral expansion) within tidal creeks results in a net loss of saltmarshes, but this retreat process can be retarded by root systems. To understand the interaction between root presence and bank sediment, quantitative measurements of two saltmarsh species root systems (Atriplex portulacoides and Juncus maritima) were carried out in a saltmarsh in Southern England, and their relationships with bank stability were examined. Computed Tomography (CT) Scanning techniques were used to investigate three-dimensional root architecture. The data obtained (e.g., root volume, diameter, and distribution patterns of roots) were examined alongside more traditional root density measurements. The volumetric percentage, ratio between horizontal (lateral) and vertical roots (H/V ratio), and root diameter distribution are discussed in relation to their influence on bank sediment erosion threshold and shear strength. The results suggest that Atriplex portulacoides is more effective than Juncus maritimus in stabilising banks. This is because root systems that provide a high resistance to flow-induced erosion are better than those that provide a high resistance to gravity-induced erosion in stabilising cliff banks. This conclusion is relevant to future saltmarsh protection and re-establishment.

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“…This long-distance hypothesis is supported by the long-term data of sediment, elevation, and soil salinity revealing the changes before and after the Spartina invasion ( 29 – 31 ). The invasion triggered a clear building process characterized by enhanced sedimentation by Spartina and significant increases of elevation at the local scale ( Fig.…”

Section: Resultsmentioning

confidence: 62%

Long-distance facilitation of coastal ecosystem structure and resilience

Wang

Zhang

Liu

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

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Biotic interactions that hierarchically organize ecosystems by driving ecological and evolutionary processes across spatial scales are ubiquitous in our biosphere. Biotic interactions have been extensively studied at local and global scales, but how long-distance, cross-ecosystem interactions at intermediate landscape scales influence the structure, function, and resilience of ecological systems remains poorly understood. We used remote sensing, modeling, and field data to test the hypothesis that the long-distance impact of an invasive species dramatically affects one of the largest tidal flat ecosystems in East Asia. We found that the invasion of exotic cordgrass Spartina alterniflora can produce long-distance effects on native species up to 10 km away, driving decadal coastal ecosystem transitions. The invasive cordgrass at low elevations facilitated the expansion of the native reed Phragmites australis at high elevations, leading to the massive loss and reduced resilience of the iconic Suaeda salsa “Red Beach” marshes at intermediate elevations, largely as a consequence of reduced soil salinity across the landscape. Our results illustrate the complex role that long-distance interactions can play in shaping landscape structure and ecosystem resilience and in bridging the gap between local and global biotic interactions.

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Rapid formation of marsh-edge cliffs, Jiangsu coast, China

Cited by 28 publications

References 71 publications

Modeling Decadal Salt Marsh Development: Variability of the Salt Marsh Edge Under Influence of Waves and Sediment Availability

Modeling Decadal Salt Marsh Development: Variability of the Salt Marsh Edge Under Influence of Waves and Sediment Availability

Controls on creek margin stability by the root systems of saltmarsh vegetation, Beaulieu Estuary, Southern England

Long-distance facilitation of coastal ecosystem structure and resilience

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