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

Is the embryonic development in birds indirect or direct, Q. Is the embryon...

Q. Is the embryonic development in birds indirect or direct? The embryonic development is direct there is no larval stage. Q. What are the predominating chemical compounds

What would we conclude from pcr/dgge, What would you conclude from PCR/DGGE...

What would you conclude from PCR/DGGE (denaturing gradient gel electrophoresis) analysis of a sample that yielded one band by PCR and one band with DGGE? One band by PCR and two ba

Sketch cis-trans isomer of the first molecule, Please help with the followi...

Please help with the following: a) Draw a diagram (showing all the C and H atoms, and their bonds) for a hydrocarbon with 5 carbons with a double bond between carbons 2 and 3.

What are the cells that form the cartilaginous tissue, What are the cells t...

What are the cells that form the cartilaginous tissue? The main cells of the cartilages are the chondrocytes, originate from the chondroblasts that secrete the intersticial ma

Diaphragmatic hernia, Diaphragmatic Hernia: In this condition there  i...

Diaphragmatic Hernia: In this condition there  is a slight herniation ofabdominal organs  (stomach intestine and liver) or extreme protrusion of abdominal contents into the th

Eastern/western/venezuelan equine encephalitis, Eastern/Western/Venezuelan ...

Eastern/Western/Venezuelan equine encephalitis This encephalitis causing group of viral diseases of wild birds including pheasants, chickens, turkeys, ducks and pigeons with a

Hypoglycemic effects of dietary factor, Define Hypoglycemic effects of Diet...

Define Hypoglycemic effects of Dietary Factor with antinutritional effect? Of the different carbohydrate foods tested for starch digestibility and blood glucose response, those

What are the four types of weak bonds, What are the four types of weak bond...

What are the four types of weak bonds, and how do they differ from each other and from covalent bonds? When you eat a salad with lettuce, croutons, hard-boiled egg, bacon bits,

How much proteins should be taken for management of obesity, How much Prote...

How much Protein should be taken for Management of Obesity? Adequate amount of proteins should be included in the diet to ensure proper metabolism and prevent weakness which is

Reproduction, what are the methods of seed formation

what are the methods of seed formation

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