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Ponsero, Alain; Le Mao, Patrick; Yesou, Pierre; Allain, Jeremy; Vidal, Justine. |
The national nature reserve of Saint-Brieuc Bay, located in the north of Brittany, is a site of international importance for the wintering of the Black-bellied Brent goose Branta bernicla bernicla although its preferred food, eelgrass, is completely absent. Local monitoring points out that the green seaweeds Ulva armocicana represents 90% of the food eaten by the Brent geese. These algae are responsible for the spectacular green tides which greatly impact this bay each summer. The 400 odd tons consumed each winter by the Brent geese are insufficient to curb this phenomenon. However, the resorption policy of the nitrogenized surpluses arriving in the bay in order to fight against the aestival green tides could, in the long term, reduce this food resource... |
Tipo: Text |
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Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6857.pdf |
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