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

Explain the history of plant classification, Explain the History of Plant C...

Explain the History of Plant Classification? Before Darwin's theory of evolution and publication of his epoch making work 'Origin of Species' in 1959 no outstanding basis for

Pentose phosphate pathway, The pentose phosphate pathway also called as the...

The pentose phosphate pathway also called as the phosphogluconate pathway and the hexose monophosphate shunt is a procedure which gives pentoses 5-carbon sugars and NADPH. There ar

Strobilation - types of asexual reproduction, Strobilation - Types of Asexu...

Strobilation - Types of Asexual Reproduction Strobilation is a type of asexual reproduction in which successive segments are separated off from the body one after other. It is

Organic compounds, ORGANIC COMPOUNDS - They are substances having bo...

ORGANIC COMPOUNDS - They are substances having both carbon and hydrogen which are commonly biological in origin. Organic compounds can be micromolecules or macromolecules

Describe what are non degradable pollutants, Question : (a) Briefly de...

Question : (a) Briefly describe what are non degradable pollutants? (b) What do you meant by ichthyosarcotoxic fishes and give two examples of ichthyosarcotoxic fish poiso

Biogenesis of mitochondria, BIOGENESI S OF MITOCHONDRIA De Novo for...

BIOGENESI S OF MITOCHONDRIA De Novo formation i.e. new formation. It is not confirmed. New mitochondria are formed by division (Amitosis) of pre-existing mitochondria.

Define the maintenance of weight loss, Define the Maintenance of Weight Los...

Define the Maintenance of Weight Loss? Once an individual has managed to lose weight to a desirable level, it must not be assumed that the weight loss will be maintained automa

Explain some handy points related to infant feeding, Explain some Handy Poi...

Explain some Handy Points related to Infant Feeding? Points to be kept in mind: • Introduce only one food at a time, giving only small amounts at first • Increase variety s

Explain syphilis and hiv, Syphilis and HIV Most clinicians treat HIV-i...

Syphilis and HIV Most clinicians treat HIV-infected patients with syphilis and normal CSF with standard penicillin doses for the stage of syphilis, but some patients may need

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