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

Chlorine (cl) - micronutrients, Chlorine (Cl) - Micronutrients The rol...

Chlorine (Cl) - Micronutrients The role of Cl - in plant is not clearly understood. Cl - is required in Hill reaction, the water splitting reaction of photosystem II. In the

Food might become contaminated by harmful bacteria, Three ways in which foo...

Three ways in which food might become contaminated by harmful bacteria. Food may become contaminated:- (i) from the unwashed hands of a food-handler, (ii) by house- flies

Demand for health care in the presence of health insurance, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Plants of estuary, Plants of Estuary The plants of the estuary are of ...

Plants of Estuary The plants of the estuary are of four basic types: Phytoplankton, Marginal marsh vegetation, Mud-flat algae and Epiphytic plants

Atp molecules produced for each glucose molecule, Q. How many ATP molecules...

Q. How many ATP molecules are produced for every glucose molecule used in fermentation? And How many ATP molecules are produced for each glucose molecule used in aerobic respiratio

Explain the transportation of vitamin a, Explain the Transportation of Vita...

Explain the Transportation of Vitamin A? The chylomicra and retinal-binding protein play an important role in the transport of retiuol. This chylomicra complex enters the lymp

Bilateral cleavage, Bilateral Cleavage In some animals (for example tu...

Bilateral Cleavage In some animals (for example tunicates and nematodes, although in different way), the arrangement of 4 blastomeres after second cleavage is almost radially

The cardiac cycle during which the ventricles are filled, What is the stage...

What is the stage of the cardiac cycle during which the ventricles are filled? The filling of the ventricles with blood happens during diastole. The Circulatory System - Ima

Describe the symptoms of edema, Describe the clinical significance and symp...

Describe the clinical significance and symptoms of edema. How does edema (in its different forms listed in your text) appear on medical imaging examinations? Discuss any specific c

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