Types of pyramind forest
Answers
Answer:
Explanation:
Pyramid of numbers, showing the number of individual organisms at each level
(ii) Pyramid of biomass, showing the total dry weight and other suitable measure of the total amount of
(iii) Pyramid of energy, showing the rate of energy flow and/or productivity at successive trophic levels.
The pyramids of numbers and biomass may be upright or inverted depending upon the nature of the food chain in the particular ecosystem, whereas pyramids of energy are always upright.
Answer:
Ecological pyramids are of three general types namely:
The pyramids of numbers and biomass may be upright or inverted depending upon the nature of the food chain in the particular ecosystem, whereas pyramids of energy are always upright.
Explanation:
Some of the important types of ecological pyramids are discussed below :
Each ecosystem is characterized by the interaction of food chain, the metabolism relationship between the linearly arranged biotic components of an ecosystem.
This characteristic is called the trophic structure. The trophic structure and function at successive trophic levels, that is producers → herbivores → carnivores, may be shown graphically by means of ecological pyramids where the first or producer level constitutes the base of the pyramid and the successive levels, the tiers making the apex.
Ecological pyramids are of three general types namely
(i) Pyramid of numbers, showing the number of individual organisms at each level
(ii) Pyramid of biomass, showing the total dry weight and other suitable measure of the total amount of living matter, and
(iii) Pyramid of energy, showing the rate of energy flow and/or productivity at successive trophic levels.
(iii) Pyramid of energy, showing the rate of energy flow and/or productivity at successive trophic levels.The pyramids of numbers and biomass may be upright or inverted depending upon the nature of the food chain in the particular ecosystem, whereas pyramids of energy are always upright.
1. PYRAMIDS OF NUMBER:
Pyramids of numbers show the relationship between producers, herbivores and carnivores at successive trophic levels in terms of their number. In grassland the producers, which are mainly grasses are always maximum in number.
Pyramids of numbers show the relationship between producers, herbivores and carnivores at successive trophic levels in terms of their number. In grassland the producers, which are mainly grasses are always maximum in number.This number then shows a decrease towards apex, as the primary consumers (herbivores) like rabbits, mice etc. are lesser in number than the grasses; the secondary consumers, snakes and lizards are lesser in number than the rabbits and mice.
Finally, the top (tertiary) consumer’s hawks or other birds are least in number. Thus, the pyramid becomes upright. Similarly, in a pond ecosystem the pyramid is upright. Here the producers which are mainly the phyto-planktons as algae, bacteria etc. are maximum in number.
Finally, the top (tertiary) consumer’s hawks or other birds are least in number. Thus, the pyramid becomes upright. Similarly, in a pond ecosystem the pyramid is upright. Here the producers which are mainly the phyto-planktons as algae, bacteria etc. are maximum in number.The herbivores, which are smaller fish rotifers etc. are lesser in number than producers and the secondary consumers (carnivores), such as small fish eating each other, water beetles etc. are lesser in number than the herbivores. Finally, the top (tertiary) consumers, the bigger fish are least in number. (In a forest ecosystem, however, the pyramid of numbers is somewhat different in shape.
Finally, the top (tertiary) consumer’s hawks or other birds are least in number. Thus, the pyramid becomes upright. Similarly, in a pond ecosystem the pyramid is upright. Here the producers which are mainly the phyto-planktons as algae, bacteria etc. are maximum in number.The herbivores, which are smaller fish rotifers etc. are lesser in number than producers and the secondary consumers (carnivores), such as small fish eating each other, water beetles etc. are lesser in number than the herbivores. Finally, the top (tertiary) consumers, the bigger fish are least in number. (In a forest ecosystem, however, the pyramid of numbers is somewhat different in shape.The producers, which are mainly large-sized trees, are lesser in number, and form the base of the pyramid. The herbivores, which are the fruit-eating birds, elephants, deer’s etc. are more in number than the producers. Then there is a gradual decrease number of successive carnivores, thus making the pyramid again upright. However in a parasitic food chain the pyramids are always inverted.