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
How to reduce calorie intake from fat? Efforts should be made to increase the nutrition knowledge of the general public through mass media. The foods with lower fat co

Explain about the Enteral feeding in elderly? Enteral, as you may already be aware, is defined as provision of nutrition support through the GI tract or by accessing the gut. Th

PERSONNEL It is important that while allocating nursing, medical and paramedical staffs, the needs of the neonatal unit should not be ignored. The highest priority in the orga

Locomotory Structures Annelids possess three kinds of locomotory structures, namely parapodia, setae and suckers. Parapodia are segmentally arranged, lateral, hollow extensio

Pathophysiology of Acute Renal Failure It is usually reversible but the deviation of physiologic function can be extreme and mortality in pediatric age group remains high. Th

What are the three main parts of a eukaryotic cell? The eukaryotic cell can be divided into two major portions: the cell membrane that divides the intracellular space from the

Determine some assessment measures of Zinc? Measurement of zinc in plasma: This is the most common method. Fasting concentrations of less than 70 μg/litre suggests deficie

Q. What are the tissues that form the skin in vertebrates? The skin of vertebrates is made of epidermis is an external layer of epithelial tissue and dermis a layer of connecti

Explain sol -gel transformation During sol -gel transformation, a three dimensional network is formed by the interlocking of dispersed particles. The liquid phase is entrapped

Q. What are the various biological examples in which lysosomic enzymes play a fundamental role? The remodelation of the osseous tissue, the function of the elimination of the t