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 colorimetric method glucose estimation, Explain the Colorimetri...

Explain the Colorimetric Method Glucose Estimation? Alkaline copper reduction methods are by far the most commonly used methods for glucose estimation. This time honoured metho

Why ph regulation is important for living beings, Q. Why pH regulation is i...

Q. Why pH regulation is important for living beings? How mineral salts participate in this regulation? The prospective of hydrogen (pH) is a measure of the amount of hydrogen i

Can you explain the lichens, Q. What are the lichens? How fungi participate...

Q. What are the lichens? How fungi participate in this ecological interaction? Lichens are formed by mutualist ecological interaction between algae and fungi or between fungi a

Flow cytometry, The following histograms were produced using flow cytometry...

The following histograms were produced using flow cytometry after labelling B-cell lymphocytes with propidium iodide. Histogram A is from a healthy individual while Histogram B is

What is plaque, What is plaque? Plaque is a film over the teeth and hav...

What is plaque? Plaque is a film over the teeth and having of saliva, mucus, bacteria and the substances they produce. It may also have mineral salts of calcium and magnesium.

Define absorption, Define Absorption, Transport and Excretion - Calcium? ...

Define Absorption, Transport and Excretion - Calcium? Calcium (Ca) in food occurs as calcium salts e.g. calcium phosphate or is associated with other dietary constituents e.g.

Etiologic factor of dyslipidemia, Q. Etiologic factor of dyslipidemia? ...

Q. Etiologic factor of dyslipidemia? The causative factors of dyslipidemia/hyperlipidemia may be environmental (dietary/ lifestyle), genetic or secondary to certain disease con

Excretory, what are the excretory organs protozoa

what are the excretory organs protozoa

Viruses, Viruses Viruses are sub cellular, ultramicroscopic infectious...

Viruses Viruses are sub cellular, ultramicroscopic infectious agents of 20 nm-300 nm size range Many of them cause diseases like polio, dengue, small pox, measles, rabies, com

Explain about aerobic respiration, Which is the cell organelle that is spec...

Which is the cell organelle that is specialized in aerobic respiration? The cell organelles that are specialized in aerobic respiration are the mitochondria. Cell Respiratio

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