Polders
are fertile clay soils, which are protected from high seas and the threat of
flooding by knowledgeable management of the water table. Though called the
Triaize Poulders these recovered lands in fact cover an area from the sea dykes
at l'Aiguillon-sur-mer and the lands around the Anse de
l'Aiguillon, almost back to Luçon. Created over three hundred years ago these polders are
today given over to grazing by cattle and cereal production.
Over the
tens of kilometres of these polders are protected and separated from the coast
by encircling dykes and the discharge channels of the Canal de Luçon and the
Canal Vieux with their tidal gates and locks.
This landscape is devoid
of trees except for the hardy Tamarisk which forms barriers to the westerly
winds. It is a landscape of black soils where Montagu's Harriers and Marsh
Harriers flourish, where one can spot the 5 species of Herons that frequent the
Vendée and during the autumn the migrating ducks and geese find respite on their
journey south.