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
The DNA replication is a biological procedure which happens in all living organisms and copies their DNA; it is the basis for biological inheritance. The process will starts when o

Define the term price mechanism and how it works. The price mechanism and its working: The above demonstrated diagram assumes the market is into equilibrium, whereby deman

The pancreas produces insulin, a hormone that is specifically produced in the beta cells of the pancreas and it is responsible for the regulation of blood glucose. After carefull c

Cell membrane lining the inner surface of the cell wall The cell membrane lining the inner surface of the cell wall is made up of phospholipids (45%) and proteins (55%). Some

How do the availability of water and light and the climate affect the growth of a population? The availability of water and light and the climate are abiotic factors that limi

Regeneration Leading To Asexual Reproduction Regeneration is described as the replacement of the lost parts of the body of an organism. This capacity is present in approximat

What is the difference between recessive allele and dominant allele? The Dominant allele is the allele that determines phenotypical features that manifest in heterozygous or ho

Assessment of Peripheral Vascular Disorders History Obtain the following information by interviewing the patient and family members Previous vascular surgery, previ

What is Subphylum Vertebrata explain? This large group of animals takes its name from its distinguishing feature: the vertebral column, or the backbone. The backbone made of se

Hypertensive emergencies are one of the important categories of hypertension and characterized by severe elevations in BP that are complicated by evidence of progressive target org