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The Destruction Of Delicate Ecosystems: Increase In Jellyfish Population

3920 words - 16 pages

As human population continues to increase with the current population now exceeding 7 billion people so does human reliance on the ocean, however the ocean is not infinite therefore this means that if we fail to use the ocean wisely in a way that is sustainable and will allow for future generation to still access the resources of the ocean we will see great consequence many of which may be irreversible. Our actions on the ocean are greatly affecting the complex ecology of this vast aquatic environment. In this essay I am going to talk about how human as well as climatic activity is affecting one species in particular and what the outcomes of this are.

Jellyfish are one of the oldest organisms on earth dating back more than 300 million years. At this time the ocean would be vastly different to how it appears now they would be no schools of fish or hunting sharks. There would be little diversity, with the ocean consisting only of simple organisms. Fossil records show that within this 300 million year period that jellyfish have existed they have undergone little evolutionary change they appear almost the same today as they did 300 million years ago. It can be said these organisms are amazingly resilient which is truly remarkable considering these creatures are 95% water and do not have a brain. But even with how resilient these organisms are, are they able to withstand the effects caused by humans and global warming? Could it even be said that these organisms are so resilient that these creature may even begin to flourish under these effects where most species are struggling to survive even facing the threat of extinction.

Recent investigation into these remarkable creatures suggest that the effects on the ocean cause both by humans as well the consequence of global warming are resulting in jellyfish taking over coastal waters, with humans coming into contact with them more and more. Jellyfish inhabit every ocean of the world. Over the past few years it has been believed by many that jellyfish are increasing rapidly records show that shockingly jellyfish populations in Japan are now 100 times greater than 20 years ago which is having huge impacts for humans including fishing, tourism and they are even effecting nuclear power plants.

So the key question is what is causing this increase in jellyfish population?

There are a few theories as to why there has been an increase in the number of jellyfish. One contributing factor is believed to be from the result of dead zones. Dead zones are caused by a type of pollution know as Eutrophication, in Greek this word translates to ‘good nourishment’. Eutrophication provides marine ecosystems with excess nutrients. At first this may seem like a positive thing the phase good nourishment seem to draw ideas of providing organism with more then enough nourishment they need to grow and thieve. And...

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