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

Why is the sun the motor of the water cycle, Q. Why is the sun the "motor" ...

Q. Why is the sun the "motor" of the water cycle? The sun can be considered the motor of the water cycle for the reason that upon its energy the transformation of liquid water

Define nutritional availability - microbial survival, Define Nutritional Av...

Define Nutritional Availability - Microbial Survival and Growth? Food borne microbes are chemotrophs. Generally the types of microorganisms present on a particular food are the

Tapetum - anther wall layers, Tapetum - Anther Wall Layers Tapetum is ...

Tapetum - Anther Wall Layers Tapetum is the innermost and most important layer of the anther wall. It is generally composed of a single layer of cells. These cells completely

Explain about the dehydration, Explain about the Dehydration? Dehydrati...

Explain about the Dehydration? Dehydration is defined as the excessive loss of body water. It may occur because of inadequate intake, or abnormal loss of body water or a combin

Explain the differance between pinocytosis and phagocytosis, Explain the di...

Explain the differance between Pinocytosis and Phagocytosis? Pinocytosis and Phagocytosis : The cell membrane occasionally invaginates or indents to capture extracellular flu

Assessment of wilm tumour, Assessment   The child with wilm's tumour wi...

Assessment   The child with wilm's tumour will present you with a large mass in the loin or an enlarging abdomen. This mass may be noticed accidently by  the parent of  the chi

Study of human age pyramids, Q. What are the analyses provided by the study...

Q. What are the analyses provided by the study of human age pyramids? The study of human age pyramids able to provide the following analyses, proportion of individuals at an ec

#titlemicrobiology.., topics relating research on microorganisms and their ...

topics relating research on microorganisms and their application ?

Dietary approach for pectic ulcer, Q. Dietary approach for pectic ulcer? ...

Q. Dietary approach for pectic ulcer? Let us now move on to understand the dietary approach. We shall begin with the nutrient requirements of the patients. However before we ta

Different modes of nutrition, Explain different modes nutrition like Autotr...

Explain different modes nutrition like Autotroph,hetrotroph,saprotroph,holozoic

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