Words: 725
This report analyses the ways that global warming affect ecosystem with explaining the result of greenhouse and global warming. There are some cases which will be shown with detailed date. Results Greenhouse effect Rise of ICC and temperature Recent sea level rise (Robert A. Erode 2009) (Katz, J. C. I 998) Discussion Greenhouse and global warming The short-wave solar radiations easily go through atmosphere have high speed and then most of the energy absorbed by surface of earth. But the earth radiates atmosphere as long-wave heat energy which is difficult to escape to space because of being held by carbon dioxide, vapor and methane.
Carbon dioxide accounts for 0. 03% of atmosphere over other two gases. As the carbon dioxide increase, the greenhouse effect is enhanced which lead to the average temperature increase and the atmosphere is becoming warmer and warmer. The Earth will warm another 1. 1 to OFF this century because the carbon dioxide emissions from burning fossil fuels and excess deforestation. The most pronounced effects of increasing temperature has been melting of masses of ice around the world and expanding of water. During the 20th century, sea level rose about 15-20 centimeters (roughly 1. 5 to 2. 0 mm/year).
At same time the pH of ocean is decreasing because of increasing the amount of carbon dioxide. The carbon easily dissolves into water when the temperature rises. It means the ocean is being acidified. There three factors, increasing temperature, rising sea level and acidifying ocean, are changing the nature environment . The habitats of animals and plants are losing or disappearing because of the change of his living condition. They need migrate to find new places and try to adapt for it. This recess causes the species endanger and even die out. So we deem the global warming could break the balance of ecosystem.
Rise of temperature Arctic ice cover is the polar bear’s feeding habitat, but it is melting due to temperature increasing. As ice cover disappears gradually, bear deaths increase. May 14, 2008, Polar bears were added to the threatened species list because of global warming. The U. S. Geological Survey reported that the two- thirds of the polar bear could lose after because of global warming. On other side, temperature is an important factor for spreading Of species. There is a survey reporting that species are migrating as the temperature rises. The ranges of many plants and animals are moving toward the poles and toward higher elevations.
Red Orbit reports on research published in the journal Science, deeming that as global warming, the ranges of many plants and animals are moving toward the poles and toward higher elevations with a rate of about 1 mile per year. As the Associated Press writes, they are “fleeing global warming. ” If all the species move to poles and the top of mountain, where do they move next? The answer is “die out’. Rise of sea level There are some little islands and suitable seaside habitat being cover by sea due to rising sea level. The birds of long-distance moving are more vulnerable to the rising of sea level than other species.
As the season changes, a lot of birds migrate to others suite places every year. Some little islands and reefs are important transitional stations for the birds of long-distance moving. They remember the moving route and easily find there islands and reefs to transiently rest. But these transitional stations disappeared now due to the rising of sea level, a great number of them died due to exhausted trip. Although some birds reach to destination, these places is not suit for living and reproducing because of global warming. It leads to species of birds decreased sharply.
As temperatures increased between 1980 and 1 992 at Lake Constance in Central Europe, the proportion of long-distance migrant bird species decreased. The ranges of many European and African birds are likely to shift by at least 600 miles, with a decline in species richness and reduction in average range sizes. Over the last decade, our oceans absorbed excess ICC which is actually changing the pH of the sea. The pH of sea is important living factor for ocean species. As the pH of sea changes, a lot of marine species endanger and even die out. This process is known as ocean acidification.