The other day I saw this picture in the newspaper showing a tiger running across the road in the middle of the forest with vehicles going at high speeds around it. Well, having being in the field of environment for the past two years, I’ve read a lot about issues with infrastructure development in forests but only when you see a picture like this does reality strike you.
Here you have a highly endangered predatory cat, and supposedly millions of dollars are being spent in protecting it. But why in the world then do we have vehicles going at high speed in the middle of tiger reserves?
What these roads lead, to among other things, is Habitat Fragmentation. Among the very many threats to biodiversity, this one probably takes the cherry.
Every creature needs a viable population for its survival (a population large enough and genetically diverse enough to propagate the species). A population can only be sustained if there is enough food available for that population. And food depends critically on how much continuous habitat is available, especially for animals higher up on the food chain.
How does small road through a big jungle possibly affect the habitat, you ask?
A road through the jungle effectively cuts the forests into two small sub-forests as far as the animals are concerned. There is good likelihood that animals on one side of the road will remain on that side and not cross.
A few hundred years ago, small villages and towns occupied positions around big forests. Now, a small forest is encroached from all sides by villages and cities. The road through the forest is nothing but a knife through the heart of the forest.
The situation of forests now has been aptly described as “Islands of habitat in a sea of disturbance”. Habitat fragmentation causes tremendous pressure on individuals to find food and water and mates in a very restricted area and this often leads to death of remaining population, or entering of animals into surrounding villages, and man-animal conflict. The temporary loser may be the animal, but really who is to say that we are not hurting ourselves. Is there any comparison between 3 billion years of evolutionary legacy and a quicker drive?