The Undersecretariat of Fisheries (Subpesca) expressed concern about the intrusion of red tide in inland areas of Aysen Fjord eventual product of the construction of the Crow River. a Durante filling will be a period of 15-24 months in the fjord will receive only the amount of 3m3 / s of fresh water, creating a local and temporary increase in salinity. This can lead to an intrusion into the fjord, the pen saline. The importance of the above is that the presence of harmful microalgae Alexandrium catenella in the fjord is limited by salinity. The incumbent will analyze this situation, modeling the likely intrusion of Alexandrium catenella on domestic sectors of the estuary and provide measures to mitigate or repair says the technical report that the agency has entered the system of Environmental Impact Assessment (SEIA) in the context of assessment study of the Southern Energy Society of Swiss-Australian miner Xstrata Copper, which intends to build a hydroelectric dam in the Aysen Region.
Alexandrium catenella is a real pest in this area today and is directly responsible for the occurrence of the phenomenon known as red tide, which has generated several deaths on the coast and incalculable economic losses to thousands of families of fisherfolk in the southern sea. But this observation is not unique. Adding to her irretrievable loss of flora and fauna of extraordinary conditions, such as a desaparicion final pristine bodies and without the presence of exotic biota and Meullin Yulton lakes, Lake Mud Hens, the river and eventually the River Drainage Cuervoa by making a consumptive use of 98% of the total flow of this river. .