How does El Nino affect the fishing industry?
An El Niño reduces the upwelling of cold water off the coast of the Americas. When this happens, fish either die or migrate into areas where they’ll find more to eat. Off California, fish populations may also be reduced. Marine mammals, such as seals and sea lions, that feed on fish may be affected.
How do you think an El Nino event impacts the fishing industry on the west coast of South America?
When this warm water builds up in the western Pacific-Ocean, nutrient-rich cold waters are forced to rise up from the deeper ocean just off of the west coast of South America. This colder nutrient-rich water fosters the growth of the fish population. During an El Niño event the trade winds weaken.
How does El Nino affect fishing in Peru?
The El Niño affects traditional fisheries in Peru and Ecuador. However, when this upwelling of water weakens as in El Niño affected years, warmer, low nutrient rich water spreads along the coast, and the catch is severely affected.
What is the main idea of El Nino fish tale?
During El Niño, the water off the coast of Peru is warmer than usual. Without the cold, upwelled water, less phytoplankton can survive. And with less phytoplankton to eat, fewer anchovies can survive.
What happens to trade winds during El Nino?
During an El Niño event, the easterly trade winds converging across the equatorial Pacific weaken. This in turn slows the ocean current that draws surface water away from the western coast of South America and reduces the upwelling of cold, nutrient–rich water from the deeper ocean, flattening out the thermocline.
What are the impacts of El Nino on fishing in Peru and in CA Why?
During an El Nino year, however, the winds, which blow along the surface of the tropical Pacific Ocean, ease. Why this happens is unclear, but it can have dramatic effects. The warm water sloshes back towards South America, which hides the nutrient-rich cold waters and ensures fish are in short supply.
What are the impacts of El Nino on western North and South America?
The effects of El Niño in South America are direct and stronger than in North America. An El Niño is associated with warm and very wet weather months in April–October along the coasts of northern Peru and Ecuador, causing major flooding whenever the event is strong or extreme.