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Biogeomorphological aspects of a model barrier island and its surroundings - Interactions between abiotic conditions and biota shaping the tidal and terrestrial landscape: A synthesis
Bakker, J.P.; Berg, M.P.; Grootjans, A.P.; Olff, H.; Schrama, M.; Reijers, V.C.; van der Heide, T (2023). Biogeomorphological aspects of a model barrier island and its surroundings - Interactions between abiotic conditions and biota shaping the tidal and terrestrial landscape: A synthesis. Ocean Coast. Manag. 239: 106624. https://dx.doi.org/10.1016/j.ocecoaman.2023.106624
In: Ocean & Coastal Management. Elsevier Science: Barking. ISSN 0964-5691; e-ISSN 1873-524X, meer
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| Author keywords |
Beach; Dune arc complex With dune slacks; Intertidal flats; Island head; Salt marshtidal basin; Wadden sea; Wash-over complex |
| Auteurs | | Top |
- Bakker, J.P.
- Berg, M.P.
- Grootjans, A.P.
- Olff, H.
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- Schrama, M.
- Reijers, V.C.
- van der Heide, T, meer
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| Abstract |
Barrier islands occur in north-western Europe between the North Sea and the Wadden Sea along the coast of Denmark, Germany and the Netherlands. Geomorphological units such as dunes and salt marshes are built by wind, water and sediment. The biota also feed back to the units by trapping sand and silt, transported by water and wind thus (de)stabilizing the local substrate and are able to modify their own abiotic environment. Hence, we refer to them as biogeomorphological units, thus including the role of engineering biota. We consider seven units: tidal basin, island head, intertidal flats, dune arc complex, wash-over complex, island tail with salt marsh, and green beach. We focus on the well-studied West-Frisian island of Schiermonnikoog, the Netherlands, from which we integrated published data. The biogeomorphological units are built with bioengineering species, and in turn provide habitats for plant- and animal species. These communities are subject to succession until climax stages with various timescales. These temporal aspects are derived from long-term measurements in the field, including the study of chronosequences. Biogeomorphological units also affect each other, including feed-backs from animals, plants and micro-organisms. Based on that we present a conceptual model of this particular barrier island. Knowledge gaps that can be identified include 1) interactions among geomorphological units, 2) interactions among these units and bio-engineers to come to biogeomorphological units, and 3) multiple spatial-temporal scales. Human interference such as Aatmospheric deposition applies to all islands and is difficult to manage. Other human interferences may, however, differ among individual islands and their surroundings. They can be managed such as various intensities of fisheries, sand suppletion, extraction of groundwater, the attitude of local people towards artificial sand-drift dikes and livestock grazing. |
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