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Aerial surveys on seagrass (Zostera spp.) indicate a three to fourfold increase in bed area from 1994 to 2006 with up to 100 km2 or 11% of intertidal flats in the Northfrisian Wadden Sea (coastal eastern North Sea), observed at seasonal maximum in August when flying during low tide exposure 300 to 500 m above ground. When viewed from the air, difficulties(More)
The Wadden Sea along the North Sea coasts of Denmark, Germany, and the Netherlands is the largest unbroken system of intertidal sand and mud flats in the world. Its habitats are highly productive and harbour high standing stocks and densities of benthic species, well adapted to the demanding environmental conditions. Therefore, the Wadden Sea is one of the(More)
High-resolution multispectral remote sensing data from satellite-borne optical sensors have already been used for the classification of sediments, macrophytes, and mussels in the German Wadden Sea. Since the use of those sensors in northern latitudes is strongly limited by clouds and haze, we included synthetic aperture radar (SAR) data, allowing earth(More)
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