scholarly journals EFFECTS OF WAVE LOAD ON THE LONG-TERM VEGETATION DEVELOPMENT AND THEIR RESISTANCE AS GRASS REVETMENTS ON SEA DIKES

2018 ◽  
pp. 87
Author(s):  
Jochen Michalzik ◽  
Sven Liebisch ◽  
Torsten Schlurmann
Keyword(s):  
Ecosystem Services ◽  
Storm Surges ◽  
Coastal Protection ◽  
Wave Load ◽  
Vegetation Development ◽  
Safety Standards ◽  
Wave Basin ◽  
Proper Design ◽  
Sea Dikes

Construction and design processes of revetments, sea dikes and estuarine dikes along the German coastline adhere the paradigm to protect and safeguard reliably the coastal hinterland from wave attack and storm surges. Following these standards coastal protection structures provide only poor ecosystem services in any proper design or maintenance approach. As a result, the EcoDike-project has been started with the aim to quantify and enhance the ecosystem services of revetments, sea dikes and estuarine dikes while preserving or possibly even enhancing the existing safety standards. Therefore, a profound understanding of the complex long-term interactions between wave load and vegetation development on sea dikes is inevitable. To achieve these objectives a typical seadike in prototype scale is tested under realistic and long-term wave loading in the new outdoor wave basin at the Ludwig-Franzius-Institute in Hannover (Germany).

scholarly journals Development of an Outdoor Wave Basin to Conduct Long-Term Model Tests with Real Vegetation for Green Coastal Infrastructures

2019 ◽  
Vol 7 (1) ◽  
pp. 18 ◽  
Author(s):  
Jochen Michalzik ◽  
Sven Liebisch ◽  
Torsten Schlurmann
Keyword(s):  
Ecosystem Services ◽  
Current Trend ◽  
Model Tests ◽  
Water Levels ◽  
Growth Stages ◽  
Wave Load ◽  
Ecological Value ◽  
Wave Basin ◽  
Sea Dikes

The demand for physical model tests with real vegetation is increasing due to the current trend to elucidate the performance and durability of green coastal infrastructures to ensure and promote ecosystem services. To address this demand, a new outdoor wave basin (OWB) was built in August 2017 at the Ludwig-Franzius-Institute in Hannover, Germany. This paper reviews the general characteristics and the ongoing development of the new OWB. First insights into the long-term development of the ecosystem services of different grass revetments are discussed in terms of their ecological value and safety standards of sea dikes. Focus is placed on the resistance and ecological value of different grass mixtures that are typically applied on sea dikes situated along the North Sea. Further research concepts are briefly described to highlight how experiments in the new OWB may contribute to the current understanding and design recommendations of green coastal infrastructures. The operation of the OWB enables the performance of long-term experiments over seasonal growth stages of coastal vegetation using either fresh or seawater with wave load stresses and varying sea water levels. The first conducted experiments with different grass revetment combinations mimic typical storm surge conditions with a constant wave load (with a duration of up to 10 hours every second week) on a natural dike.

scholarly journals Long-Term Assessment of an Innovative Mangrove Rehabilitation Project: Case Study on Carey Island, Malaysia

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Shervin Motamedi ◽  
Roslan Hashim ◽  
Rozainah Zakaria ◽  
Ki-Il Song ◽  
Bakrin Sofawi
Keyword(s):  
Wave Energy ◽  
Ph Value ◽  
Storm Surges ◽  
Coastal Protection ◽  
Coastal Structures ◽  
Mangrove Seedlings ◽  
Salinity Index ◽  
Mangrove Rehabilitation

Wave energy and storm surges threaten coastal ecology and nearshore infrastructures. Although coastal structures are conventionally constructed to dampen the wave energy, they introduce tremendous damage to the ecology of the coast. To minimize environmental impact, ecofriendly coastal protection schemes should be introduced. In this paper, we discuss an example of an innovative mangrove rehabilitation attempt to restore the endangered mangroves on Carey Island, Malaysia. A submerged detached breakwater system was constructed to dampen the energy of wave and trap the sediments behind the structure. Further, a large number of mangrove seedlings were planted using different techniques. Further, we assess the possibility of success for a future mangrove rehabilitation project at the site in the context of sedimentology, bathymetry, and hydrogeochemistry. The assessment showed an increase in the amount of silt and clay, and the seabed was noticeably elevated. The nutrient concentration, the pH value, and the salinity index demonstrate that the site is conducive in establishing mangrove seedlings. As a result, we conclude that the site is now ready for attempts to rehabilitate the lost mangrove forest.

scholarly journals Coastal Lowlands' Inundation Risk Assessment with High-resolution TanDEM-X DEM in Qingdao Coastal Plains, China

2020 ◽  
Vol 382 ◽  
pp. 621-627
Author(s):  
Peng Li ◽  
Miao Li ◽  
Zhenhong Li ◽  
Houjie Wang
Keyword(s):  
High Resolution ◽  
Sea Level Rise ◽  
Sea Level ◽  
Jiaozhou Bay ◽  
Storm Surges ◽  
Weather Conditions ◽  
The Yellow Sea ◽  
Coastal Protection ◽  
Extreme Precipitation Events

Abstract. Global warming plays a principal role on the continuous increasing sea-level rise, which exposes coastal regions worldwide to flooding threat. However, the challenge is that the regional impact of SLR flooding can be variable, especially when considering multiple effects of land subsidence, long-term general sea-level rise and extreme weather conditions like storm surge. In this paper, we build module with high-resolution InSAR-derived precision DEMs with resolution of 4 m, long-term SLR trend and episodic signals of climate change to calculate the relative sea level in AD 2100 on various scenarios over the Jiaozhou Bay, one typical region of the biggest peninsula in China and an important economic centre adjoining to the Yellow Sea. The potential of TanDEM-X DEM for coastal vulnerability mapping in the Qingdao coastal area were evaluated in order to investigate the effect of the accuracy and resolution of coastal topography on the reliability and usefulness of elevation-based sea-level rise assessments. The results reveal that coastal lowland areas over the JiaozhouBay are extremely vulnerable in the following years within 21st century with use of high-accuracy TanDEM-X DEM data, which would be an advantage for further elevation-based dynamic assessments of coastal inundation events considering storm surges, abnormal high tides, and extreme precipitation events. which would be vital for locally coastal protection and decision-making.

scholarly journals Trends and Evolution in the Concept of Marine Ecosystem Services: An Overview

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2060
Author(s):  
Elvira Buonocore ◽  
Umberto Grande ◽  
Pier Paolo Franzese ◽  
Giovanni F. Russo
Keyword(s):  
Ecosystem Services ◽  
Alternative Assessment ◽  
Natural Capital ◽  
Marine Ecosystem ◽  
Management Strategies ◽  
Marine Ecosystems ◽  
Global Ocean ◽  
Coastal Protection ◽  
Policy Dialogue ◽  
Marine Ecosystem Services

The biotic and abiotic assets of the marine environment form the “marine natural capital” embedded in the global ocean. Marine natural capital provides the flow of “marine ecosystem services” that are directly used or enjoyed by people providing benefits to human well-being. They include provisioning services (e.g., food), regulation and maintenance services (e.g., carbon sequestration and storage, and coastal protection), and cultural services (e.g., tourism and recreational benefits). In recent decades, human activities have increased the pressures on marine ecosystems, often leading to ecosystem degradation and biodiversity loss and, in turn, affecting their ability to provide benefits to humans. Therefore, effective management strategies are crucial to the conservation of healthy and diverse marine ecosystems and to ensuring their long-term generation of goods and services. Biophysical, economic, and sociocultural assessments of marine ecosystem services are much needed to convey the importance of natural resources to managers and policy makers supporting the development and implementation of policies oriented for the sustainable management of marine resources. In addition, the accounting of marine ecosystem service values can be usefully complemented by their mapping to enable the identification of priority areas and management strategies and to facilitate science–policy dialogue. Given this premise, this study aims to review trends and evolution in the concept of marine ecosystem services. In particular, the global scientific literature on marine ecosystem services is explored by focusing on the following main aspects: the definition and classification of marine ecosystem services; their loss due to anthropogenic pressures, alternative assessment, and mapping approaches; and the inclusion of marine ecosystem services into policy and decision-making processes.

scholarly journals How Do Trade-Offs and Synergies between Ecosystem Services Change in the Long Period? The Case Study of Uxin, Inner Mongolia, China

2019 ◽  
Vol 11 (21) ◽  
pp. 6041 ◽  
Author(s):  
Zhang ◽  
Li ◽  
Buyantuev ◽  
Bao ◽  
Zhang
Keyword(s):  
Ecosystem Services ◽  
Inner Mongolia ◽  
Stepwise Regression ◽  
Driving Forces ◽  
Extended Period ◽  
Trade Offs ◽  
Development And Utilization ◽  
Long Term Trends

Ecosystem services management should often expect to deal with non-linearities due to trade-offs and synergies between ecosystem services (ES). Therefore, it is important to analyze long-term trends in ES development and utilization to understand their responses to climate change and intensification of human activities. In this paper, the region of Uxin in Inner Mongolia, China, was chosen as a case study area to describe the spatial distribution and trends of 5 ES indicators. Changes in relationships between ES and driving forces of dynamics of ES relationships were analyzed for the period 1979–2016 using a stepwise regression. We found that: the magnitude and directions in ES relationships changed during this extended period; those changes are influenced by climate factors, land use change, technological progress, and population growth.

Economic valuation and the commodification of ecosystem services

2011 ◽  
Vol 35 (5) ◽  
pp. 613-628 ◽  
Author(s):  
Erik Gómez-Baggethun ◽  
Manuel Ruiz-Pérez
Keyword(s):  
Ecosystem Services ◽  
Environmental Policy ◽  
Biodiversity Conservation ◽  
Economic Valuation ◽  
Short Term ◽  
Valuation Of Ecosystem Services ◽  
Equity Of Access ◽  
The Way

In the last decade a growing number of environmental scientists have advocated economic valuation of ecosystem services as a pragmatic short-term strategy to communicate the value of biodiversity in a language that reflects dominant political and economic views. This paper revisits the controversy on economic valuation of ecosystem services in the light of two aspects that are often neglected in ongoing debates. First, the role of the particular institutional setup in which environmental policy and governance is currently embedded in shaping valuation outcomes. Second, the broader economic and sociopolitical processes that have governed the expansion of pricing into previously non-marketed areas of the environment. Our analysis suggests that within the institutional setup and broader sociopolitical processes that have become prominent since the late 1980s economic valuation is likely to pave the way for the commodification of ecosystem services with potentially counterproductive effects in the long term for biodiversity conservation and equity of access to ecosystem services benefits.

The Long-Term Regulation of Safety Standards: The Case of the Electricity Industry in Australia and New Zealand

2012 ◽  
Vol 13 (4) ◽  
pp. 312-332
Author(s):  
Malcolm Abbott
Keyword(s):  
New Zealand ◽  
Electricity Industry ◽  
Political Context ◽  
Safety Standards ◽  
Safety Regulations ◽  
History Of ◽  
The Subject ◽  
Organizational Approach

Throughout much of the history of the electricity industry in Australia and New Zealand the industry has been the subject of safety regulations. Although this regulation has been a constant throughout the life of the industry the organizational approach to regulation has changed over the years. Periodically in Australia and New Zealand history these questions have been raised in a political context, although notably the structure of safety regulators does not get much attention in the standard histories of the industry. The purpose of this paper, therefore, is to discuss some of the general issues that have arisen in the reform of regulation in the case of electricity safety over the longer term and how it relates overall to the development of the electricity industry.

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