Pyramid of energy - ecological pyramids, Biology

Pyramid of Energy - Ecological Pyramids

When we wish to compare the functional roles of the trophic levels in an ecosystem, an energy pyramid is probably the most informative. It overcomes some of the objections pertaining to the pyramid of numbers and biomass. An energy pyramid more accurately reflects the laws of thermo dynamics; with loss of energy being depicted at each transfer to another trophic level hence the pyramid is always upright. Energy pyramids in the case of aquatic ecosystem are also upright, even where the pyramid of biomass is inverted.

1124_Pyramid of Energy - Ecological Pyramids.png

Figure:  Pyramid of energy.

In energy pyramids, a given trophic level always has smaller energy content than the trophic level immediately below it. This is due to the fact that some energy is always lost as heat in going from one trophic level to the next. Each bar in the pyramid indicates the amount of energy utilised at each trophic level in a given time, annually per unit area. The unit of measurement is kcal/m2/yr.

Posted Date: 1/19/2013 12:58:19 AM | Location : United States







Related Discussions:- Pyramid of energy - ecological pyramids, Assignment Help, Ask Question on Pyramid of energy - ecological pyramids, Get Answer, Expert's Help, Pyramid of energy - ecological pyramids Discussions

Write discussion on Pyramid of energy - ecological pyramids
Your posts are moderated
Related Questions
Define Interaction of Folate with Vitamin C? Vitamin C: Anaemia is observed in vitamin C deficient patients. Normochromic, normocytic or macrocytic or megaloblastic ana

CELL SURFACE JUNCTIONS (1 )      Desmosomes (Maculae adherence) - Thickened circular areas on P.M. of adjacent cells with radiating fibrils in cytoplasm. These fibrils calle

What is the main means by which autotrophic beings obtain energy? The major means by which autotrophs obtain energy is photosynthesis (There are also chemosynthetic autotrophs)

Explain the Composition of MacConkey Agar? Bactopeptone - 17.0 gm Protease Peptone - 3.0 gm Lactose - 10.0 gm Bile salt mixture - 1.5 gm Sodium chloride - 5.0 gm

PHOTOTHERAPHY AND EXCHANGE TRANSFUSION: This section will enable you to acquire skills related to phototherapy and exchange transfusion. You will also review the indication

The initial evaluation of new onset heart failure should include an electrocardiogram, chest radiograph, and B-type natriuretic peptide assay. The cardiac rhythm may be normal sinu

What organisms make starch? What is it used for? What organisms make glycogen? What is it used for?

Explain the term- Latent Squint (Anisophoria or Heterophoria) This eye condition occurs when the balance of extra-ocular muscles is altered. There is a tendency of the eye to

The three charges in the are at the vertices of an isosceles triangle. Let q = 7.00 nC and calculate the electric potential at the midpoint of the base.

Define methods used in combination with pasteurization? Typical other methods used in combination with pasteurization include: 1.  Refrigeration as in the case of   milk