Danube-Auen National Park on both land and water, and other invertebrates, the total number of species in Donau-Auen National Park is estimated to be at least 5,000. Danube-Auen National Park Donau-Auen National Park () covers 93 square kilometres in Vienna and Lower Austria and is one of the largest remaining floodplains of the Danube in Middle Europe. The German word Aue (variant Au) means "river island, wetland, floodplain, riparian woodland", i.e. a cultivated landscape in a riparian zone. The words Aue and Au occur in a large number of German place names—including Donau, the German word for the Danube River—and refer to forests,
German name German name Personal names in German-speaking Europe consist of one or several given names ("Vorname", plural "Vornamen") and a surname ("Nachname, Familienname"). The "Vorname" is usually gender-specific. A name is usually cited in the "Western order" of "given name, surname", unless it occurs in an alphabetized list of surnames, e.g. "Bach, Johann Sebastian". In this, the German conventions parallel the naming conventions in most of Western and Central Europe, including English, Dutch, Italian, and French. There are some vestiges of a patronymic system as they survive in parts of Eastern Europe and Scandinavia, but these do not form part of