Monday, July 9, 2012

Climate change impact on animal species

Climate change is one of tremendous dangers, which might occur in the next 100 years. To date it is of scientific concern to forecast what transformations will happen to the world, including natural environment, technology, social livelihood, etc. Animals are probably the only living creatures, which have already passed the age of major natural alterations dozens of millions years ago, at least some of them did. Do you remember dinosaurs, much depicted by modern film industry? That’s right, this is animal species, which could not overcome severe climate change. Age of tropic climate has been replaced by glacial eras for several times, but what consequences might bring next climate change period for animal habitat?

1.       Temperature shift is one of the most urgent in this context. In particular, it influences on processes in a body of any being, and the nature taken as a whole. Plants can experience severe changes, which leads to meal disorder for animals. Therefore, they may have less food to eat and, in the end, reduction of species sizes or even population quantity is unavoidable. In addition, scholars from Singapore National University state that hot temperature and unstable precipitations will definitely reduce body sizes of animals. In particular, their research gives some examples of possible body mass decline: fish – on 6-22% per 1°, bugs – 1-3%, salamanders   -14%. For the last 50 years certain species have already experienced major body decrease (common frogs (Bufobufo), red deer (Cervuselaphus), and marine iguanas (Amblyrhynchuscristatus).

2.       The emergence of new species and decrease of common ones is also a point to consider. Scientists from Washington University claim that some animals have not much time to avoid climate change influence. The Earth temperature rises due to greenhouse gases, the climate in Western Hemisphere will change dramatically and mammals in the North and South America will have to move into new habitats, which are more suitable for their existence. According to scientific estimates, 9% of American species, as well as 40% of animals from other regions, will not manage to escape climate change due to low speed.

3.       On the contrary, tropical species might also clash with despite the fact that hot climate is essential for them.The key thing is that there are some animal kinds, which possess extra-sensitivity to even the slightest temperature shifts. 

4.       Among already confirmed species, which are likely to survive, there are many carnivore species, armadillos, deer, coyotes and some moose. Many of these animals can move at a fairly long distances to reach the places where they can normally survive quickly.

5.       Massive animal migration to colder planet areas is noticed even today. There are 2 thousand records about changes of animal areal borders. Equatorial species move with a speed of 1,5 km / year to Northern and Southern poles, while birds are flying 12 meters higher. So, the direct influence of climate change on animals and their habitat is a no-doubt-issue, which testifies the probability of species’ survival. 

By Maria Kruk, an author for

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