Global

past and present trends on ecosystem loss

Submitted by sybil.bory on

Source: 

http://en.wikipedia.org/wiki/Biodiversity

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past and present trends on ecosystem loss

This picture is about past and present trends on ecosystem loss. The figure includes the marine, terrestrial , freshwater and vertebrate species. This all species decrease a lot during the 40 years.

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terrestrial ecosystem loss

Submitted by sybil.bory on

Source: 

http://en.wikipedia.org/wiki/Biodiversity

Image: 

terrestrial ecosystem loss

Now I’m going to speack about terrestrial ecosystem loss. This picture is about deforestation, the net loss of forest is mainly in the south of America. However the net gain of forest is located mainly in America AND EUROPE

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marine dead zone to present

Submitted by sybil.bory on

Source: 

http://en.wikipedia.org/wiki/Biodiversity

Image: 

marine dead zone to present

THE FOLLOWING MAP SHOWS HOW MARINE DEAD ZONES ARE GLOBALLY DISTRIBUTED. MOREOVER, THE BAR CHART SHOWS THE DRAMATICALLY INCREASING NUMBER OF DEAD ZONES FROM THE BEGINNING OF THE PAST CENTURY TO THE PRESENT DAYS.

AS YOU CAN SEE, THE LARGEST AMOUNT OF DEAD ZONES IS CONCENTRATED AROUND INDUSTRIAL AND RICH COUNTRIES SUCH AS THE USA, EUROPE AND JAPAN WHERE POLLUTION LEVELS ARE VERY HIGH AND FISHING IS BROUGHT TO AN EXCESSIVE EXTENT.

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fishing trend to present

Submitted by sybil.bory on

Source: 

http://en.wikipedia.org/wiki/Biodiversity

Image: 

fishing trend to present

About marine, i ‘m going to speak about fishing . The fishing increase since 1960 and currently we have 10 million tons fishing.

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Marine ecosystem loss

Submitted by sybil.bory on

Source: 

http://en.wikipedia.org/wiki/Biodiversity

Image: 

Marine ecosystem loss

On this picture you can see the marine ecosystem loss with on the left the key ecosystem services and on the right the major loss mechanisms. On the right you have dredging and boating effects. Coastal salinity chenges beacause of altered water flow for irrigation. THE POLLUTION DISCHARGED INTO THE SEA BY DIVERSE HUMAN ACTIVITIES CAUSES EUTROPHICATION WHICH REDUCES THE LIGHT AND THE OXYGEN IN THE WATER. ALL THOSE ASPECTS PLAY AN IMPORTANT AND CRITICAL ROLE  IN DAMAGING MARINE ECOSYSTEMS.

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