By Kalpana Palkhiwala
Deputy Director (M & C), Press Information Bureau, New Delhi.
New Delhi, India, Oct 15, 2010 (Washington Bangla Radio / PIB)
Biological diversity, encompasses all life forms on earth. Biodiversity
maintains the ecological balance and continues evolutionary processes.
The very survival of humankind depends on these core ecological
functions. The indirect ecosystem services provided through biodiversity
include: photosynthesis, pollination, transpiration, maintaining the
balance of atmospheric gases, maintaining hydrological cycles, chemical
cycling, nutrient cycling, pest control, etc. Biodiversity also has
aesthetic and recreational value. Conservation and sustainable use of
biodiversity is therefore fundamental to ecologically sustainable
development. In fact the very survival of humankind depends upon
Biodiversity manifests itself at three
levels: species diversity which refers to the numbers and kinds of
living organisms, genetic diversity which refers to the genetic
variation within a population of species, and ecosystem diversity which
is the variety of habitats, biological communities and ecological
processes that occur in the biosphere.