Chausey cultivates the sea

Elevage of the moules on bouchots: pious some drink planted in the sand, aligned in order Facilitate the mécanisée harvest.

If the fishing to the homards and to the crevettes did and always does wealth of Chausey, a maritime adventure took foot on the l'archipel Norman.

Since 1992, the d'huîtres farm, of bouchot moules and even of palourdes blossoms in waters limpides of the granvillais caillou, under the eye interested biology laboratory and of navy biotechnologie of the university of Caen.

The life to Chausey is only a gigantic flow and reflux. The work in the granit careers was taken to the far in the memories. Of even the work of the varech that, to the century XIXe, was harvested and burned on the spot to make the necessary soude to the factory of ices Glacerie, close to Cherbourg, or again for confectionner let us know them Rouen. Since these remote times of the full-employment, the life in the norman l'archipel slowly withdrew itself to the rhythm of successive departures. First the school, closed in 1972. Then the priest in 1981. And at last the last cows, embarked in 1990. In the other feels, tourism took possession of the Big Island, pouring to each big tide, his attracted flâneurs wave here by promises of mirifiques fishings. The fishing, recently so flourishing in this vivier to homard and big pink crevettes (bouquets) furthermore of 5 000 hectares, took its final neighborhoods in the harbor of Granville. For as much, Chausey always is used as a basis advanced by the granvillais fishermen that installed here their viviers to crustacés. And a new race of sailors took foot on the l'archipel: the cultivateurs of the sea. « If the l'huître and the moule are not unknown on Chausey the conchyliculture represents very here a new activity », confirm Rock-Henri Troude, assistant mayor of Granville and in love declared with l'archipel.

Invisible to the eyes of tourists that attain only to the Big Island, the insulaire conchyliculture groups together today 29 bouchot moules km, 11 hectares of parks to huîtres but also a concession 21 hectares of farm palourdes exploited by the corporation SATMAR, already present in the region with his farm-écloserie naissains d'huîtres to Gatteville-Headlight, close to Barfleur. Well sheltered winds by the rocky barrier of the l'archipel, all these concessions are not accessibles that by tides of a superior coefficient to 70. If one adds thereto conditions particularly delicate navigation, one understands that the trade conchyliculteur does not improvise itself to Chausey. « to work here, it is necessary already to be sea and to well know the sector », confirm Edouard Lapie, former fisherman of Chausey reconverti today in the l'ostréiculture with its sons. « When the ostréiculteurs of the coast use a tracteur to return itself on their parks, we, we must take the boat with an hour of road to the minimum at the start of Granville. Once failed on our sand bench, it remains only four or five hours to work For if the sea descends fast here, she climbs back up equally very quickly. Brief it is necessary to work faster with fresh supplémentaires ». In these conditions, which is the interest to raise huîtres to Chausey? First of all, because there is no longer any place elsewhere. « the Whole coast already is taken. And then, here, the l'huître pushes Really very fast », replies the former fisherman. « to each of our passages on the concession, it is necessary without stop to type on all the pockets to prevent the coquilles from hang itself to the meshes. Ca pushes really very fast », does it underline while joining the gesture to the word.

For the palourde, present in the l'archipel since 1989, the farm method is totally different. Here, one left quasiment zero since this coquillage, sold principally in Italie and in Espagne, generally is fished in sea.
Past master in the reproduction of the huîtres in écloserie and very of the sterile huîtres (triploïdes) being able to be to have consumed all year long, the SATMAR perfected here an original farm method where one sème the coquillage baby squarely sand to harvest two years for it later, as one could do it with potatoes.
Of experimental one, the concession quickly is passed to the commercial stadium. The attained palourdes production today more of 100 tons per year. Seen the price of the kilo of palourde with the retailers poissonniers, that begin becoming interesting bougrement!

This recent success but spectaculaire of navies cultures in the l'archipel are followed closely by the biology laboratory and of navies technology of the university of Caen. The position of the l'archipel and the quality of its preserved waters of all pollution do Chausey an observation field and of unique d'expérimentation in the region, indeed in the whole France, that do not lack to attract the biologistes. The L'archipel possesses thus a Fucus type seaweed (Lutarius Fucus) that does not meet itself that here. Of even, the sea bottom of Chausey are the last ones to preserve a certain type of Zostères (under-navies prairies) décimé elsewhere by a bacterial disease. This wealth of the navy flore does currently the object of studies taken by the students of the universitaire laboratory. Of even, the university chose Chausey to take an applied research program on the reproduction of the seiche, the one of the most important types of the low-norman fishing followed besides since of long years by the caennais universitaire laboratory. The objective is d'optimiser the reproduction of the céphalopode in the l'archipel so that these juvéniles come next grossir the adults stocks seiches captured by the fishermen. In other words, Chausey conforter in his role natural nourricerie for all the fishes and crustacés of the Sleeve West.

Low Magazine Normandie, March 1999, Regional Counsel