types of environments resulting from the dynamic equilibrium between
the sea, the river and freshwater can be found in the Baix Ter plain.
The interaction between the sea, the river and the sediments it
carries has given rise to a wide variety of ecosystems, with very
subtle variations in the duration of floods, depth, salinity, nutrient
content or type of substrate. The variety of environments and the
diversity of organisms that can be found in them are two of the
most important ecological aspects of the area. A description of
the main aquatic ecosystems found in the Baix Ter follow.
and coastal lagoons
- coastal freshwater
- inland temporary
strongly humanized aquatic environment
Intensive agricultural and herding activities are possible thanks
to high fertility and ease of irrigation in the Lower Ter plain.
As a result we find a characteristic landscape with aquatic environments
created or modified by man. Although they are man-made it does not
mean that they do not have an important paper as a refuge for aquatic
fauna and flora.
Extended rice fields, with summer flooding, result in an accumulation
of birds. We can also find enclosures (fields ‘closed’
by trees) and pasture lands, easily ploughed in these flooded lands.
Although they are quite scarce they support species of flora and
fauna characteristic of temporary environments.
The plain has an extensive system (over 1000km in length) of streams
and irrigation ditches that drain rainwater and/or canalise irrigation
herons pecking in a rice field