Limiting factor - ecosystem, Biology

Limiting Factor - Ecosystem

In all ecosystems one factor, usually abiotic, limits the growth of organisms and is therefore called a limiting factor. The limiting factor is one that outweighs all the other factors that are necessary for the growth of organisms. It is the primary determinant for growth because it lies beyond the minimum and maximum limits o the range of tolerance. For example, phosphorus is a limiting factor in certain aquatic ecosystem. It is the first to be used up. When phosphorus is reduced, the growth of algae is impaired. So, this is an example, where pho3phorus is in short supply and is thus a limiting factor. As mentioned above just as the shortage of any abiotic factor impairs the survival of organisms In an ecosystem, so can an excess.

Any factor that is in excess may b detrimental for the living organisms, directly or indirectly. You may be wondering how' Let us consider an example of a power plan1 from where the hot water pours into a nearby stream. As a result, the temperature or water in the area nearby shoots up from 10° C to 30° C. This sudden therryal vhock IS fatal for many fish and other aquatic organisms. The above example, illustrates the direct effect of excess of a factor. How the factors indirectly affect living beings is illustrated by the following example. If we over-water or flood a patch of land having trees on a prolonged basis then the excess water saturates, the soil by displacing air needed by the trees from the soil pores, thus creating anaerobic conditions. As a result, the roots get deprived of oxygen leading to the death of the trees. The excess of the water thus indirectly affect the survival of trees adversely.

Posted Date: 1/19/2013 12:54:17 AM | Location : United States







Related Discussions:- Limiting factor - ecosystem, Assignment Help, Ask Question on Limiting factor - ecosystem, Get Answer, Expert's Help, Limiting factor - ecosystem Discussions

Write discussion on Limiting factor - ecosystem
Your posts are moderated
Related Questions
What is the central principle of molecular biology?

Q. What are the functions of pantothenic and biotin acid for the body? How are these vitamins obtained? Biotin also known as vitamin B8 is a vitamin that acts in the metabolism

Rothera's Test It is highly sensitive for both acetoacetic and acetone. Although it is one of the oldest methods still it is widely used. Procedure: - Take about 5ml of

A fire hose ejects a stream of water at an angle of 38.8 ° above the horizontal. The water leaves the nozzle with a speed of 26.6 m/s. Assuming that the water behaves like a projec

Are sex-linked diseases associated only to genes of the X chromosome? There are so many X-linked diseases such like, hemophilia B, hemophilia A and adrenoleukodystrophy, but re

Explain the Conjunctival impression Cytology (CIC)? Conjunctival impression cytology (CIC) is a simple, rapid and inexpensive method which is suitable for a field survey. By to

Explain Metastatic carcinoma Metastatic carcinoma:- Cancer that can be  transferred from one part of the body to other unrelated parts.

Asteroid impacts: The hypothesis which links certain mass extinction events with the impact of the comet or asteroid, most particularly the mass extinction 65 million years which

Explain Lamda and Kappa-carrageenan Lamda-carrageenan at a concentration of 0.05% produces thickening and  stabilization. Sodium salts of Lamda and Kappa-carrageenan at a co

What is the life cycle of the hookworms? Adult hookworms within the human intestine release eggs that are eliminated with the human feces. Under adequate conditions of moisture