Marine Ecosystem Enhancement on a Geotextile Coastal Protection Reef - Narrowneck Reef Case Study -

Jackson, LA; Reichelt, Russell; Restall, Simon; Corbett, Bobbie; Tomlinson, Rodger Benson; McGrath, John

doi:10.1142/9789812701916_0318

Cited by 19 publications

(19 citation statements)

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“…The overall performance of the reef has been presented previously by Jackson et al (2003), , Jackson, Reichelt et al (2005), and Jackson et al (2007). In addition there have been regular six-monthly reports on the impact of the reef on the adjacent shoreline, for example: Blacka et al (2007) and Strauss et al (2012).…”

Section: Monitoring Programmentioning

confidence: 90%

Long Term Performance of a Submerged Coastal Control Structure: A Case Study of the Narrowneck Multi-Functional Artificial Reef

Jackson

Tomlinson

Corbett³

et al. 2012

Int. Conf. Coastal. Eng.

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In response to the increasing occurrences of beach erosion along Surfers Paradise and Main Beaches -Gold Coast, Australia, the Northern Gold Coast Beach Protection Strategy [NGCBPS] was developed to widen the beach by 20-30m as well as improving surfing conditions as a secondary objective. The strategy, implemented in 1999-2000, involved large-scale beach nourishment and construction of a submerged breakwater "reef" to act as a control point at Narrowneck. Construction of the reef involved innovative filling and placement methods using very large sand filled geotextile containers coupled with significant advances with regards to design of the geotextile material and containers. In the 11 years since construction, there has been substantial monitoring of the project since its completion in late 2000 including: -video imaging using webcams; hydrographic and beach surveys; aerial and oblique photography; surf and surf safety observations and GPS surfing track plots; and geotextile container condition and stability. This paper presents an update on the performance of the reef over the last four years. In particular, the response of the structure and the shoreline to a series of major storm events in 2009 has been examined. The results have shown that the erosion caused by these major events was accommodated within the wider beach created in 1999. Over the next 2 years there was a gradual recovery in the lee of the reef with a subtle groyne effect resulting in an even larger increase in the width of the updrift beach. A detailed underwater condition survey was also undertaken in 2011, to determine changes in the condition of the geotextile containers. This revealed a number of containers missing or damaged, and that seaward containers were covered by sand. The marine habitat which has been a feature of the reef has been impacted by the increased coverage of sand, but still shows high abundance and biodiversity.

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Section: Monitoring Programmentioning

confidence: 90%

Long Term Performance of a Submerged Coastal Control Structure: A Case Study of the Narrowneck Multi-Functional Artificial Reef

Jackson

Tomlinson

Corbett³

et al. 2012

Int. Conf. Coastal. Eng.

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“…However, the re-design of this technique and integrating other new technology has resulted in making this soft structure more resistant and durable over greater time periods. The use of these containers has been widely used in the coastal zones of United States (Harris & Sample, 2009), Australia (Jackson et al, 2004), and the Republic of Korea (Shin & Oh, 2007) with positive outcomes in terms of coastal protection and ecological enhancement.…”

Section: Marine Soft Engineering Technologymentioning

confidence: 99%

Sea level rise impacts in coastal zones: Soft measures to cope with it

Linares¹

2012

DJIM

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Sea level rise impacts are projected to cause multiple negative consequences in coastal zones such as coastal erosion, flooding, flood-related health problems, property damage, and socio-economic impacts. Thus, it is imperative to assess adaptation measures to minimize these devastating projections. Several strategies that respond to sea level rise (such as Retreat, Accommodate, Protect) have been developed. Within the Protect Responsive Strategy, "hard" and "soft" adaptation options have been widely implemented in coastal zones. This paper examines several "soft" adaptation options (beach nourishment, dune restoration, afforestation and reforestation, and marine soft engineering technology), which provide interesting possibilities in response to sea level rise in coastal zones. Advantages and disadvantages of these "soft" options are analyzed from an ecological and socio-economic perspective. The paper concludes with proposed recommendations that could support "soft" structure approaches in coastal zone areas.

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“…Moreover, the use of geotextile tubes to create artificial dunes reduces costs, time and environmental damage, with the advantage of being adaptable to the morphology of the dune system and using locally available sand (Oumeraci et al, 2003;Stokes et al, 2012). Recent examples of successful application of geotextile tubes come from the coastal zones of USA (Harris and Sample, 2009), Australia (Jackson et al, 2004) and the Republic of Korea (Shin and Oh, 2007), where positive outcomes were obtained in terms of coastal protection. However, very little is known on the effects of dune recovery with geotextiles on biotic communities, if compared to the several studies on the ecological impacts of both beach nourishments (reviewed in Goldberg, 1988;Peterson et al, 2006;Speybroeck et al, 2006) and hard-engineering interventions (Bertasi et al, 2007;Dugan et al, 2008;Martin et al, 2005;Sobocinski, 2003).…”

Section: Introductionmentioning

confidence: 99%

Macrofaunal community abundance and diversity and talitrid orientation as potential indicators of ecological long-term effects of a sand-dune recovery intervention

Nourisson

Bessa

Scapini

et al. 2014

Ecological Indicators

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a b s t r a c tIn the last decades the increasing urban development on coastal areas have produced extensive modifications on shores all over the world, making critical the active management of pressures on sandy beaches. The use of engineering solutions to counteract beach erosion has been significantly increasing; the ecological indicators used to monitor these interventions generally focus on short-and medium-term effects, while little is known on their effectiveness on long-term temporal scales. The following ecological indicators have been tested in the present study: (a) macrofaunal community abundance and diversity and (b) orientation behaviour of Talitrus saltator, a talitrid amphipod widespread on Mediterranean and European Atlantic sandy beaches. Two sites were considered on a sandy beach of the Portuguese Atlantic coast, one located in front of a natural dune and the other at about 500 m of distance, where the dune had been rebuilt between 2000 and 2008 using geotextile tubes. In 2011 and 2012, macrofauna sampling and orientation experiments on T. saltator were performed at both sites in spring and autumn; contemporaneously the main environmental variables were registered. Macrofaunal data were analysed through multivariate statistical tests, and for the orientation distributions the circular statistics were calculated and multivariate analyses for angular data were performed. Geotextiles appeared to be successful in stabilising the recovered dunes; accordingly, the diversity of the macrofaunal communities and the orientation performances of T. saltator showed no differences between the altered and control sites. Significant reductions were nevertheless observed in the artificial-dune site regarding the abundance of T. saltator and, to a lesser extent, macrofaunal densities, likely ascribable to the presence of geotextiles instead of a vegetated natural dune, preventing invertebrates to burrow into the sand. These results, complementing a more comprehensive study on these two sites, indicate the abundance of T. saltator as the best indicator to follow long-term effects of this kind of soft-engineering intervention. The use of this bioindicator may be recommended for the late phases of monitoring procedures in dune-recovery processes.

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Marine Ecosystem Enhancement on a Geotextile Coastal Protection Reef - Narrowneck Reef Case Study -

Cited by 19 publications

References 1 publication

Long Term Performance of a Submerged Coastal Control Structure: A Case Study of the Narrowneck Multi-Functional Artificial Reef

Long Term Performance of a Submerged Coastal Control Structure: A Case Study of the Narrowneck Multi-Functional Artificial Reef

Sea level rise impacts in coastal zones: Soft measures to cope with it

Macrofaunal community abundance and diversity and talitrid orientation as potential indicators of ecological long-term effects of a sand-dune recovery intervention

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