Plant communities of the lagoons of the Portuguese Coastal Superdistrict -a multivariate approach

The Portuguese Coastal Superdistrict (Western Portugal) is a transitional b iogeographical unit between the Mediterranean and Eurosiberian Regions. Due to the multiple influences which impact on the region, a wealth of taxa ar e found there making large areas suited for biodiversity conservation. In t his study, the flora and vegetation of the lagoons and the marshes of this Superdistrict are characterized, and the exotic weed taxa causing problems in natural communities are emphasised.