Fish Migration

In: Science

Submitted By jaipes21
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Oceanic Climate Change Promoting Fish Distribution

The world’s oceans cover roughly 70% of the Earth’s surface and are experiencing changes in warmer water climates, which is measured by weather statics generally over a thirty-year time span, but changes in just one-decade can give researches an idea of how the ocean’s climate will look in the future. The world’s ocean surfaces have experienced a warmer climate in the last century and current hot spots, which are volcanic regions underneath the earths crust, have even raised two to three times the global average. These areas put off a large amount of heat from volcanic eruptions. Marine researchers have been able to examine the effects of greenhouse gases and global warming in the oceans with a wide array of fish species. All species have thermal tolerance ranges in which they can live; as a result, a vast number of fish species are predicted to become extinct when suitable habits become nonexistent. Increasing oceanic climates is shown to have an effect on the migration movements towards the poles, depth levels, and range expansion or contractions in which fish species can tolerate. Though marine species are constantly moving between habitats, the changes in climates are increasing the magnitude and speed of these distributions (pole ward and depth migrations) in all latitude zones of the world’s oceans.

In relation to oceans covering majority of the world’s surface area, it also absorb a far greater majority of the heat from the sun’s rays than the atmosphere. Humans greatly influence these climate changes by land-use emissions, agriculture, industrial, and fossil fuels 1. This increase in warmer oceanic climates is due to greenhouse gases (i.e. carbon dioxide) trapping energy from the sun in the atmosphere, which then warms the ocean’s surface. When top layer of the ocean increases in temperature, then…...

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