Types of biodiversity, Biology

(i)     Genetic  Bio- Diversity:

All forms of life on earth contain genes. Genes are carrier of hereditary characteristic from one generation to another.

" genetic diversity includes differences in the genetic makeup within same species". Within any given species there can be several differences in the colour, shape, size, resistance against diseases and resilience to survive under adverse environmental conditions. Such different characteristics within the same species are known as 'genetic biodiversity'. The species having large no of varieties-or races are considered as rich and more diverse in genetic makeup. The genetic diversity increases environment viability and contribute in the evolution of new species.

(ii)    Species diversity:

It refers to the presence of variety of species within a specific region. Species diversity of a region is measured on the basis of two parameters these are "species richness" and "species evenness or equitability"

Species richness refers to the no of species per unit area.

Species evenness shows the evenness in no of individuals of that species. This can be understood by following example.

There are three sample areas:

Sample area 1: in this sample area there are three species of birds. One species has four individual and other two have one each. This sample area shows species richness.

Sample area 2: this sample area have three species of birds each having two individuals. This area shows species evenness and it is more diverse than sample area one.

Sample area 3:  it has six individuals, two each from birds,mammals and insects. This sample is most diverse than the other two sample areas.

In the above example each has equal no of species but varying no of individual per species.

(iii)      Ecosystem diversity:

 It is defined as the diversity of habitats, communities, and ecological processes within the biosphere. It describes the no of niches, trophic levels and various ecological processes that sustain energy flow, food webs and the recycling of nutrients. The number of ecosystem may vary within a geographical region. It is measure of ecosystem diversity of a region.

Posted Date: 7/11/2012 7:35:03 AM | Location : United States







Related Discussions:- Types of biodiversity, Assignment Help, Ask Question on Types of biodiversity, Get Answer, Expert's Help, Types of biodiversity Discussions

Write discussion on Types of biodiversity
Your posts are moderated
Related Questions
TEMPERATURE Temperature is a major physical environmental factor which profoundly influences the vital activities of living organisms like, metabolism, growth and reproduction.

Define Absorption, Storage and Elimination of niacin? Nicotinic acid and nicotinamide are rapidly absorbed from the intestine rather than the stomach. At low concentrations, a

Q Which are the molecules that make possible active transport during membranes? Active transport is prepared by specific membrane proteins. These proteins are known as "pumps"

Q. Can you explain Tannins? Tannins are another class of compounds which interfere with the absorption of minerals like iron and reduce the availability of proteins by bindin

what are the examples of parasitic plants

Q. What is the function of the immune system? The immune system performs specific defense against agents the antigens that are harmful to the body or foreign. Exogenous anti

Explain about Extra low Interstitial Extra low Interstitial (ELI) contains low levels of oxygen dissolved in interstitial sites in the metal. Lower amounts of oxygen and iron i

Q. What is the pineal gland? The pineal gland also known as epiphysis or pineal body is situated centrally in the head. It secretes the hormone melatonin. A hormone produced at

What is a biodigester? A biodigester is equipment that creates carbon dioxide, hydrogen sulfide and fuel gases (biogases) like methane from organic material under decomposition

Q. Describe Ecosystem Diversity? Ecosystem diversity means the variation between different types of ecosystems. Different species of animals, plants and micro-organisms interac