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
Explain Development of excretory system? The filtration rate of kidney is low and infants find it difficult to eliminate high concentration of solutes. However, by the end of t

1. Describe how the various molecular mechanisms act to regulate transcription of the genes within the lactose operon of E. coli . 2. Transcription of a eukaryotic protein-codi

In the axon of a nerve cell, A. the voltage-dependent conductance of the voltage-gated potassium channel has a faster time course than the voltage-dependent conductance of the

Indications for Coronary Artery Bypass Surgery :  The modalities of treatment for coronary artery disease iuc: (1) medical, (2) angioplasty and stenting, and (3) coronary arte

A container is filled to a depth of 20.0 cm with water. On top of the water floats a 30.0-cm-thick layer of oil with specific gravity 0.700. What is the absolute pressure at the bo

How to Defibrillate? Three shocks should be given initially in a 200J - 200J - 360J sequence. For most recoverable situations, 200J would be adequate and results in least myco

Q Which are the organs and characteristics of the digestive system of earthworms related to the kind of diet of these animals? Small organisms ingested together with soil parti

Low Ca ++ in the body fluid may be the cause of: 1.  Tetany 2. Anaemia 3. Angina pectoris 4. Gout  Tetany cause low ca ++

Give three examples of diseases caused by bacteria, Diseases caused by bacteria contain tonsillitis, blood poisoning, scarlet fever, tuberculosis, typhoid, diphtheria, food poi

Blood functions to maintain homeostasis in the human body through all but which of the following: Answer moving carbon dioxide away from cells following completion of aerobic metab