scholarly journals Structure of the invertebrate fauna in salt marshes of the Wadden Sea coast of Schleswig-Holstein influenced by sheep-grazing

1995 ◽  
Vol 49 (1-4) ◽  
pp. 563-589 ◽  
Author(s):  
H. Meyer ◽  
H. Fock ◽  
A. Haase ◽  
H. D. Reinke ◽  
I. Tulowitzki
Keyword(s):  
Salt Marshes ◽  
Wadden Sea ◽  
Sheep Grazing ◽  
Invertebrate Fauna ◽  
Sea Coast

Monitoring of the invertebrate fauna in Wadden Sea Salt Marshes

1999 ◽  
Vol 29 (S1) ◽  
pp. 127-133
Author(s):  
Hans-Dieter Reinke ◽  
Hans Meyer
Keyword(s):  
Salt Marshes ◽  
Wadden Sea ◽  
Sea Salt ◽  
Invertebrate Fauna

scholarly journals A Diachronic Triangular Perspective on Landscapes: a Conceptual Tool for Research and Management Applied to Wadden Sea Salt Marshes

2021 ◽  
Author(s):  
Mans Schepers ◽  
Erik W. Meijles ◽  
Jan P. Bakker ◽  
Theo Spek
Keyword(s):  
Cultural History ◽  
Salt Marshes ◽  
Cultural Landscape ◽  
Wadden Sea ◽  
Driving Forces ◽  
Landscape Management ◽  
Analytical Framework ◽  
Physical Geography ◽  
Sea Salt ◽  
Conceptual Tool

AbstractStrong disciplinary academic fragmentation and sectoral division in policies lead to problems regarding the management of landscapes. As a result, there is a focus on the preservation and development of either cultural or natural landscapes. We argue that framing landscapes as “natural” or “cultural” will not help sustainable management. The goal of this paper is to show that even what is referred to as nature, virtually always features an intricate combination of physical geography, biology, and cultural history. It provides an analytical framework that visualizes the three forces at play in physical landscapes. Therefore, we introduce a diachronic triangular approach to study and manage landscapes from a holistic point of view, allowing an exchange of different perspectives. To test this approach, we have applied our model to a diachronic case study on Wadden Sea salt marshes. That area has been influenced by physical-geographical, biological, and cultural landscape forces, which are still visible in the landscape to a large extent. By placing different landscape zones in the triangular concept for different time periods, we can identify and visualize these driving forces through time for this specific landscape. These all play their specific roles in the appearance of the landscape over time in a close mutual interconnection. More importantly, we show that the diverse and complex interplay between these forces makes the current-day landscape what it is. We therefore conclude that the diachronic triangular approach provides a conceptual tool to define and operationalize landscape management in the Wadden Sea area. We welcome similar approaches in other landscapes to assess the usefulness of the diachronic triangular landscape approach.

scholarly journals The Influence of Infragravity Waves on the Safety of Coastal Defences: A Case Study of the Dutch Wadden Sea

2021 ◽  
Author(s):  
Christopher H. Lashley ◽  
Sebastiaan N. Jonkman ◽  
Jentsje Van der Meer ◽  
Jeremy D. Bricker ◽  
Vincent Vuik
Keyword(s):  
Wadden Sea ◽  
Infragravity Waves ◽  
Local Conditions ◽  
Wave Overtopping ◽  
Storm Waves ◽  
The World ◽  
Dike Failure ◽  
Water Depths ◽  
Sea Coast

Abstract. Many coastlines around the world are protected by coastal dikes fronted by shallow foreshores (e.g. saltmarshes and mudflats) that attenuate storm waves and are expected to reduce the likelihood of waves overtopping the dikes behind them. However, most of the studies to-date that assessed their effectiveness have excluded the influence of infragravity (IG) waves, which often dominate in shallow water. Here, we propose a modular and adaptable framework to estimate the probability of coastal dike failure by overtopping waves (Pf). The influence of IG waves on wave overtopping is included using an empirical approach, which is first validated against observations made during two recent storms (2015 and 2017). The framework is then applied to compare the Pf  of the dikes along the Dutch Wadden Sea coast, with and without the influence of IG waves. Findings show that including IG waves results in 1.1 to 1.6 times higher Pf  values, suggesting that safety may be overestimated when they are neglected. This increase is attributed to the influence of the IG waves on the design wave period, and to a lesser extent the wave height, at the dike toe. The spatial variation in this effect, observed for the case considered, highlights its dependence on local conditions – with IG waves showing greater influence at locations with larger offshore waves and shallower water depths. Finally, the change in Pf  due to the IG waves varied significantly depending on the empirical wave overtopping model selected, emphasizing the importance of tools developed specifically shallow foreshore environments.

scholarly journals Editorial

2018 ◽  
Vol 97 (3) ◽  
pp. 69-70
Author(s):  
Ad J.F. van der Spek ◽  
Niels van den Berg
Keyword(s):  
Salt Marshes ◽  
Wadden Sea ◽  
Barrier Islands ◽  
Natural Process ◽  
Tidal Channels ◽  
Ecological Value ◽  
The North ◽  
Wide Range ◽  
The North Sea ◽  
A Chain

The Wadden Sea region spans a distance of nearly 500km along the North Sea coast from the Netherlands to Denmark. It consists of a chain of barrier islands which shelter an area of extensive intertidal flats and salt marshes that are dissected by tidal channels and creeks. Moreover, several estuaries are part of this area which is known for its intriguing morphodynamics. The natural process of continuous erosion, transport and deposition of sediment shapes the morphology of the area, which has a high ecological value, especially the intertidal morphology that supports a wide range of wildlife.

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