Three Zones: Core, Buffer and Transition

To carry out the complementary activities of biodiversity conservation and sustainable use of natural resources, biosphere reserves are traditionally organized into three interrelated zones, known as the core area, the buffer zone, and a transition zone or 'area of cooperation.

Ecological balance is a term used to describe the equilibrium between living organisms such as human beings, plants, and animals as well as their environment. The tiger is a unique animal which plays a pivotal role in the health and diversity of an ecosystem. It is a top predator which is at the apex of the food chain and keeps the population of wild ungulates in check, thereby maintaining the balance between prey herbivores and the vegetation upon which they feed.According to the Global Tiger Initiative, tigers are indicators of the ecological wellness of planet earth. Being the dominant predators of the ecosystem, they ensure that the numbers of herbivores like deer are kept balanced.

Guggal or Commiphora wightii grows in the wild in the arid and semi-arid regions of Pakistan and northern India; its resin, guggal-gum, is prescribed in Ayurveda for heart ailments, obesity and arthritis.

Kailash Sankhala (30 January 1925 – 15 August 1994) was an Indian naturalist and conservationist. He was the Director of Delhi Zoological Park and Chief Wildlife Warden of Rajasthan. He is best known for his work in preserving tigers. Sankhala was the first Director of Project Tiger, a conservation programme set up in India in 1973. He was well known as "The Tiger Man of India" and was awarded the Padma Shri in 1992.

Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
Speciation occurs from standing genetic variation when reproductive isolation between 2 or more populations evolves from alleles already present within the common ancestral population, rather than from new mutations. This seasonal difference contributes to strong (although still incomplete) reproductive isolation.
Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time.
This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.

Gamma Diversity: It is the third category of inventory diversity. It is defined as the diversity of a larger unit such as an island or landscape. It is considered to be the overall diversity of a group of areas of alpha diversity. Gamma diversity equals alpha diversity x beta diversity. Thus, it is the inclusive diversity of all the habitat types within an area (region). The epsilon or regional diversity is defined as the total diversity of a group of areas of gamma diversity. 

The Deccan Plateau is famous for its biodiversity. The area is home to an exotic range of flora and fauna. Two of India’s most significant elephant conservation regions, the Anamalais-Nelliampathis and the Nilgiris-Eastern Ghats are located in this area.

Tropical latitudes receive more solar energy than temperate regions, which leads to high productivity and high species diversity.
Tropical regions have less seasonal variations and have a more or less constant environment. This promotes the niche specialization and thus, high species richness.
Temperate regions were subjected to glaciations during the ice age, while tropical regions remained undisturbed which led to an increase in the species diversity in this region.

The disappearance of cheetah from India and its exist- ence in other parts of the world is an example of expirtation.
Cheetahs face habitat loss driven by conversion of wilderness areas into managed land dedicated to agriculture or livestock. People will then sometimes kill cheetahs if they perceive the animals as a threat to their livestock, even though cheetahs rarely take domesticated animals.

Silent valley is tropical evergreen forest in Kerala declared as National reserve forest because it contains very rare species of plants and animals.

Selection cutting, also known as selection system, is the silvicultural practice of harvesting trees in a way that moves a forest stand towards an uneven-aged or all-aged condition, or 'structure'. 
Selection cutting or systems are generally considered to be more challenging to implement and maintain than even aged management, due to the difficulty of managing multiple age classes in a shared space, but there are significant ecological benefits associated with it.

A vulnerable species is a species of animals or plants which are likely to become endangered unless something changes. Something has to be done to remove the things that are harmful to their survival, and their rate of reproduction needs to increase.