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

Falling death rate, State the changes in society which could contribute to ...

State the changes in society which could contribute to a falling death rate. The changes in society which could contribute to a falling death rate are:  (i) improvements in

Proteins, assignment on the topic proteins

assignment on the topic proteins

Chest examination of new born, Chest Observe for retraction of the...

Chest Observe for retraction of the intercostal muscle which is indicative of severe respiratory distress (a sign of hyaline membrane  disease).  Inspect the brea

Assessment of acute rheumatic fever, Assessment   While assessing the p...

Assessment   While assessing the patient with rheumatic fever, a detailed history including, problematic environmental factors or recent exposure to streptococcal infection is

Amino acid sequence, Amino acid sequence  is also known as the primary stru...

Amino acid sequence  is also known as the primary structure of a protein/polypeptide; the series of amino acids in a protein/polypeptide controlled by the series of DNA bases.

Animals of the open water zone, Animals of the open water zone The li...

Animals of the open water zone The limnetic region of this zone contains certain fishes as well as rotifers, zooplankton such as crustacean and protozoan. In the profundal zo

What are the main complications of diabetes mellitus, Why do diabetic patie...

Why do diabetic patients often undergo dietary sugar restriction? What are the main complications of diabetes mellitus? Diabetic patients are often advised to ingest fewer carb

Blood be enhanced during vigorous activity, The percentage of oxygen absorb...

The percentage of oxygen absorbed from the air in the lungs is always about the similar, so how can the oxygen supply to the blood be enhanced during vigorous activity? Breathi

Define institutional and cultural barriers - infuse biology, Define Institu...

Define Institutional and Cultural Barriers - Infuse Biology? Inside the university, the departmental promotion and tenure committees understand well the value of contribution t

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