Quantitative characters - population density, Biology

Assignment Help:

Quantitative Characters - Population Density

Density denotes the average number of individuals of a particular species in a unit area. In other words, it represents the numerical strength of a species in a community. A study of density makes it possible to have accurate and direct comparisons of the abundance of species between different areas. Density also gives an idea of the degree of competition between the members of the same species as well as of one species with the other. It is calculated as follows:

Density = Total number of individuals of a species in all the sampling units / Total number of sampling units studied

The value thus obtained is expressed as number of individuals per unit area.

  • Crude density - is the density of individuals of a species throughout the habitat and is determined by random sampling.
  • Ecological density - refers to the density of individuals of a species.

Related Discussions:- Quantitative characters - population density

How to check quality of grains, Q. How to check Quality of grains? Food...

Q. How to check Quality of grains? Food grains for human consumption are whole or broken kernels of cereals, millets and pulses. According to PFA, they shall be free from added

State the study of linked genes, Why is drosophila a convenient animal for ...

Why is drosophila a convenient animal for the study of linked genes? The fruit fly drosophila is suitable for the study of Genetics because it shows many distinct traits but on

Tolerance range, Maximum and minimum range of an animal with the factors of...

Maximum and minimum range of an animal with the factors of Ph Salinity Pressure Relative human

Explain glycogen storage diseases, Glycogen Storage Diseases Glycogen  ...

Glycogen Storage Diseases Glycogen  storage diseases are caused by  genetic defects that result  in  deficiencies in  certain enzymes of  glycogen metabolism. These deficiencie

Accumulation of phenylalanine, Accumulation of phenylalanine and its catabo...

Accumulation of phenylalanine and its catabolic products leads to central nervous system damage. The extent of damage caused to the brain depends on the time at which the insult oc

History of protoplasm, HIS T O R Y - Protoplasm was first seen b...

HIS T O R Y - Protoplasm was first seen by Corti, 1772 F . Dujardin called it "Sarcode" & observed it in animal cell Term "Protoplasm" was given by J.E. Pu

Describe the biological parameters of living organisms, Describe the Biolog...

Describe the Biological parameters of living organisms Biological parameters which include living organisms constitute an important component of soil.  Even though organisms fo

Explain proteins as lubricants, Explain Proteins as lubricants? The muc...

Explain Proteins as lubricants? The mucous of the respiratory tract, oral cavity, vaginal tract and the rectal cavity reduces the irritation which might be caused by materials

Applications of closed heart surgery, Applications :  The first operation ...

Applications :  The first operation conducted was ligation of a patent ductus arteriosus through a left thoracotomy. Same approach is used for repair of coarctation of the aorta,

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd