Fall Run Salmon Research Paper

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Fall Run Salmon What is a fall run salmon? A fall run salmon is any type of salmon that does upstream migration only during the fall. That’s where they get their name “fall run” from. Life History Fall run salmon, on average, live between three and eight years (NOAA, 2009). This life cycle begins with an adult female salmon preparing a redd, or nest, in the graveled area of the river where she was born. She does this by rapidly moving her tail fin to displace gravel. She then proceeds to lay anywhere from 2,000 to 17,000 eggs in four to five different redds before covering them again with gravel. A male salmon will come and fertilize these eggs and then go look for other eggs to fertilize. In the time it takes for…show more content…
Most of the streams and rivers that salmon spawn, hatch, mature, and return to have lush and grassy banks with deciduous trees alongside. These trees and small plants provide excellent shade for the water, creating a place where salmon can hide and feel safe from predators, and keeping the “pools” along the banks cool like the salmon require (SNH). The cold water also is important during the incubation phase of salmon eggs, because if the water warms too quickly, the eggs will hatch prematurely and the young salmon are less likely to survive (SNH). The trees, grass, and plants gain benefits from this river habitat as well, such as adequate water and…show more content…
Because many insects live in these producers, they often fall into the water, and the young salmon can eat them on their way to the ocean (SNH). This process benefits the salmon, yet has no effect on the trees. Unfortunately for the insects, it is a form of predation because they soon become tasty treats for the salmon fry (SNH). Salmon are not the only secondary consumers in these rivers, and are actually the prey to many hungry predators in both fresh and salt water. While growing up in these cold and peaceful streams, salmon have to be aware of various birds such as blue heron and kingfishers, fresh water otters, American eels and the famous grizzly bear (Green, 2003). In salt water, salmon are prey to seals, sharks, seagulls, cod and others (Green, 2003). Community Structure & Food

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