Fisheries And Oceanic Food Chains

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In some way or another, we all rely on the oceans to survive. They affect weather patterns, global temperatures, provide us with oxygen, all while removing carbon dioxide from the atmosphere. More importantly, they provide us with the food that sustains life. We have always relied on oceans for food. Fishing is not a new invention but in recent history, humans have exploited this source of food. We have had a chronic problem of over fishing, over harvesting the once bountiful supply of fish. According to a National Geographic report, “A study of catch data published in 2006 in the journal Science grimly predicted that if fishing rates continue apace, all the world’s fisheries will have collapsed by the year 2048 (Pristine Seas, National…show more content…
They used their catch logs, purchase records, all sorts of records to come to the conclusion that overfishing has been happening in many parts of the world for centuries. They concluded that in the past, there were far more fish and the fish were much greater in size. Eventually, overfishing switched from freshwater to salt water. This occurred roughly 1000 years ago when taste for freshwater fish in Europe was replaced by a desire for marine fish. Possible causes for this change in taste are the sheer amount of exploitation that left the number of freshwater fish dwindling and a high amount of pollution found in fish remains that were dumped around northwest Europe and England. In the 17th century, a fishing revolution was brought on by the invention of two boats sailing next to each other dragging large nets behind them. This method was made more efficient with the invention of steam powered boats and eventually gas and diesel. Around the same time that engines became more efficient, railroads were being created that connected the ocean shores to inland populations. These advancements, along with more efficient storage methods, led to more fish being caught and sold farther and farther out in the oceans. After WW2, further vessel advancements allowed for the fishing fleets to stay at sea for extended periods of time catching more fish than ever before. Around the 1960’s,
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