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

Define surgery, Define Surgery? Surgery ! Does the word itself not crea...

Define Surgery? Surgery ! Does the word itself not create a feeling of anxiety and bring our thoughts towards a debilitating state of health which would be accompanied by pain,

Action of antibodies against virus and against bacteria, Q. How different a...

Q. How different are the actions of antibodies against virus and against bacteria? Why is the cellular immune response activated in case of chronic viral infection? The antibod

Describe dna replication in details, Describe DNA replication in details? ...

Describe DNA replication in details? Replication :  DNA replicates itself by first breaking the hydrogen bonds between the nitrogen base pairs, and "unzips" itself into two s

Explain functional property of gelation/viscosity, Explain Functional prope...

Explain Functional property of Gelation/Viscosity  Mode of action  Protein-protein interactions produce matrix formations and setting Food system Salad dressings,

Explain the precautions for sub-culturing of a culture, Explain the Precaut...

Explain the Precautions for Sub-Culturing of a Culture 1. Sterilization of inoculating wire before and after the transfer is a must. Sterilized wire should not be kept on labor

Zoonotic diseases, Zoonotic Diseases The term zoonosis (zoonoses, plura...

Zoonotic Diseases The term zoonosis (zoonoses, plural) was coined by Rudolf Virchow to describe the disease transmitted from animal to man and vice versa. Zoonoses have been de

Genotype for each individual, The allele that causes albinism (p) is recess...

The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no

Genetic reservoir - conservation of wildlife, Genetic Reservoir - Conservat...

Genetic Reservoir - Conservation of Wildlife  Despite the present and future economic and health importance to human beings, very little is known about most of the earth's 1.

What do you mean by alpha diversity, Q. What do you mean by Alpha diversity...

Q. What do you mean by Alpha diversity? Alpha (a) richness refers to the number of species found in small, homogenous area. Alpha diversity refers to the diversity in a partic

What an enzyme is called, The substance that is worked on by an enzyme is c...

The substance that is worked on by an enzyme is called: a. product b. coenzyme c. substrate d. inhibitor

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