Het ‘fluviatiel’ karakter van het dal van de Overijsselse Vecht

The major part of the valley of the river Overijsselse Vecht has been assigned to the Fluviatile District. Of the various species which are regarded as characteristic for this valley, many have suffered a decline since 1976. Their present distribution supports the upstream delimitation of this part of the Fluviatile District, between the villages Ommen and Hardenberg.