Hello, today i will tell you how the climate change impacts sea life.At first I’ll explain how the climate change impacts the sea. Then I’ll talk about how the sea lifereacts to the carbon dioxide and I will take a closer look at some of the living beings and at the endI will tell you how you can diminish the consumption of carbon dioxide.How the sea is getting warm and acidifiesThe life under water is getting amongst other things due to big amounts of carbon dioxide messedup. Per year the sea absorbs about one third of the expelled carbon dioxide and warms up steadilybecause of this.

This has far reaching consequences for the whole ecosystem. The sea hasalready warmed up to 3.000 meters into the depths, whereby the sea level ascends, becausewarm water expands. (The world wide average of the warming since 1955 is at 0,04 degreeCelsius.)When the sea absorbs carbon dioxide, it reacts with water and becomes carbonic acid, which isdecreasing the ph value of the water. As a result of this the sea is getting sourer. Seawater is lightlybasic.

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So when the sea is getting sourer it doesn’t mean they are getting sour in the taste. Theyare getting less basic.Impact on the living beingsNot all sea creatures are equally affected by acidification. In August 2013 some researchers fromthe Alfred Wegener institute were able to show that especially urchins, corals, starfishes andmollusks suffer under it.Affected by the acidification of the seas are initially creatures which are forming calcareousskeletons. The ability to form slipcovers decreases with a dropping ph value. Mussels for exampleare particularly in danger when the ph value falls under 7,6. The water debilitates the sticky threadsfrom the mussels.

In sour water, the otherwise stable threads, can’t cure out, whereby they tearapart and the mussels are losing their grip on the ground. For starfishes, crabs, or fishes theybecome an ease prey.Crabs, urchins and corals have the problem that their chalky slipcovers are getting assaulted bythe sour water. Because of this they can’t be chows for other creatures, which can cause to farreaching consequences, because this species is often educating the base of the food chain in theseas.

Corals are dyingIn September 2012 the Potsdam institute predicted that more than two third of all the coral reefscould be destroyed in 2030. The reason for this are the acidification and the warm seawater. Atemperature rise of only two degrees can be lethal for the corals, because they repel unicellularorganisms with which they’re living in symbiosis. This can cause them to starve to death.


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