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

How can coacervates be formed of phospholipids, How can coacervates be form...

How can coacervates be formed of phospholipids or polypeptides? Phospholipids are amphipathic molecules, i.e., they present a polar portion and a nonpolar portion. In contact w

Explain subphylum urochordata, Subphylum Urochordata : (13,000 species, se...

Subphylum Urochordata : (13,000 species, sea squirts) Notocord is dorally situated, nerve tube dorsally situated and is hollow, chordate characteristics seen mainly in bilatera

Define the term -aqueous movement and outflow, Define the term -Aqueous Mov...

Define the term -Aqueous Movement and Outflow There are two movements of the aqueous humour that occur-thermal flow and bulk flow. Thermal flow is, an internal circulation of

Indications for surgery, Indications 1) Symptomatic patient with normal...

Indications 1) Symptomatic patient with normal LV function (ejection fraction 2 0.5 at rest). If they are in class In or IV NYHA, surgery is recommended. In this group of pat

Concepts and definitions in relation to nutrient requirement, Concepts and ...

Concepts and Definitions in Relation to Nutrient Requirements 1) The probability concept describes the relationship between the levels of intake and the probability of risk of

Explain about the terms - bursae and captacula, Explain about the terms - b...

Explain about the terms - bursae and captacula? Paired water-filled sac located at base of each arm of a brittle star. Cilia in bursae circulate water. Its surface is significa

Determine about the chloroplast, Determine about the Chloroplast One of...

Determine about the Chloroplast One of the most distinguishing features of all eukaryotic plant cells is that in addition to mitochondria, they contain special light harvesting

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