Great part of the vegetal landscapes or vegetation units of Catalonia
are present in the river basin of the Ter thanks to the coexistence
of many different environments in a relatively small space. The
last section (the gironina and empordanesa river basins) is formed
by irrigated land and dry land crops; and right on the river mouth
small patches of glasswort and other coastal vegetation can be found.
riversides have their own vegetation, known as riverside vegetation;
mainly plants that must keep their roots wet or moist. These
conditions are only found on the riversides, ponds and wetlands
and never beyond a few meters, and for this reason, the riverside
vegetation forms narrow strips that follow the watercourse.
It’s dominated by the riverside forest, formed by different
species of trees that distribute their space depending on
environmental conditions: alder groves, willows, poplar groves,
black poplars and elm trees (the last ones found in the last
section of the river, where proximity to the sea requires
a certain tolerance to salt).
addition to the riverside forest the herbaceous vegetal communities
are also very important, especially the common reed and cattail
beds, formed by different cane species: the common reed (Phragmites
australis) and the narrow leaf cattail (Typha angustifolia)
that with flooded roots, grow on the riverbanks, under the rivers
or suspended on the water.
forests have suffered from mans’ actions; they has been exploited
intensively and have been substituted by crops and black poplars,
whilst reed beds have been burned or cut down thus destroying the
nesting sites of many aquatic birds.
Besides, it is important to emphasize the presence of Stachys
maritima, a protected species characteristic of
sand dunes, which is found on the Lower Ter beaches in one of the
most important colonies to be found in the Iberian peninsula; and
object of an exhaustive study.