Expédition Ouessant France Bretagne . Scaph Pro Recherche Océanographique

Описание: Ouessant Island Expedition, Brittany - France
NGO Scaph Pro Marine Research - Cap Ferret
Diving into the World of Kelp

Kelp forests are home to a rich flora and fauna. A kelp can support dozens of species of other algae and attached animals (called epiphytes).

In the Iroise Sea, vast expanses of brown algae sway in the current like a forest in the wind.

The silhouette of these algae is similar to that of a tree, yet they have no roots, trunk, or leaves. They have a holdfast, a stipe, and a frond and reach their adult size [BL1] very quickly, in just one year.

These underwater forests are particularly found on the island of Ouessant, where they find ideal conditions for development: cool, choppy waters and large areas of shallow rocky bottoms (less than 30 meters deep).

The structure of the kelp forest depends on the dominant macroalgae species. These are referred to as engineer species.

All levels of the food chain are present. Finding all the necessary food here, the fauna is abundant and diverse:

crustaceans: lobster, spider crabs,

echinoderms: sea urchins, starfish, etc.

mollusks: abalone, cuttlefish, etc.

fish: pollock, wrasse, wrasse, etc.

It is in this habitat of community interest that gray seals and bottlenose dolphins come to feed.

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L'ONG Scaph Pro Oceanographic Research présente une expédition sous-marine sur l'île d'Ouessant. La faune et la flore y sont décrites.
La mer d’Iroise compte près de 300 espèces de macro-algues : une des plus grandes forêts sous-marines européennes. Une eau fraîche en hiver comme en été, un taux d’ensoleillement important toute l’année, aucune pollution d’origine agricole ou industrielle offrent une grande qualité des eaux. D’ailleurs 12 espèces d’algues sont dites « culinaires » et regorgent de vitamines, de minéraux et d’antioxydants.