ECOLOGICAL PYRAMIDS Contents 01 ECOLOGICAL PYRAMID Contents 02 PYRAMID OF NUMBERS. Contents 03 PYRAMID OF BIOMASS. Contents 04 PYRAMID OF ENERGY. CONTENTS IMPORTANCE OF ECOLOICAL PYRAMIDS COMPARISON OF INVERTED AND UPRIGHT PYRAMIDS ECOLOGICAL PYRAMIDS •An ecological pyramid is a graphical representation of the relationship between different organisms in an ecosystem. •Each of the bars that make up the pyramid represents a different trophic level, and their order, which is based on who eats whom, represents the flow of energy. •Energy moves up the pyramid, starting with the primary producers, or autotrophs , such as plants at the very bottom, followed by the primary consumers, which feed on these plants, then secondary consumers, which feed on the primary consumers, and so on. •They are also known as Eltonian Pyramid, named after the Charles Elton who developed the concept of Ecological Pyramid. •Some of the common terms used here are as follows: •ECOSYSTEM •TROPHIC LEVELS •BIOMASS BIOMASS refers to the organic material that is used for production of energy. ECOSYSTEM a biological community of interacting organisms and their physical environment. TROPHIC LEVEL The trophic level of an organism is the number of steps it is from the start of the chain. PYRAMID OF NUMBER •Pyramid of the number shows the presence of total no. of organisms of different species at each Trophic level. •Depending upon the size and Biomass of the ecosystem the Pyramid of Number can be upright/ inverted. •No of organism successively decrease as we progress from lower to higher trophic level (i.e. from producer to the consumers). •In the inverted pyramid of numbers, the organism who are dependent on lower trophic level grows closer towards the apex as in case of Parasitic Food Chain •In this food chain primary producer is a large tree which supports a large no. of parasites or hyper-parasites as primary and secondary consumers. Thus the resultant shape of the pyramid is inverted. PYRAMID OF BIOMASS You can Resize without It is aquality graphical losing representation of You can Change Fill biomass (total amount Color & Line Color or organic of living matter in an ecosystem) present in unit area in different trophic levels. FREE The pyramid of biomass PPT may be "inverted“ TOO. TEMPLATES www.allppt.com •Pyramid of Biomass includes the total weight of the organic matter •Pyramid of Biomass measure the total biomass in grams per meter2 or Calories per meter2 and this also signifies the amount of matter lost between successive trophic levels PYRAMID OF BIOMASS YouIncan Resize without case of the losing quality inverted pyramid, You can Change Fill the total weight of the Color & producer is smaller Line Color than the total weight of the primary or secondary consumers. FREE MAINLY HAPPENS PPT IN MARINE TEMPLATES ECOSYSTEMS www.allppt.com PYRAMID OF ENERGY •It is a graphical structure representing the flow of energy through each trophic level of a food chain over a fixed part of the natural environment. •An energy pyramid represents the amount of energy at each trophic level and loss of energy at each is transferred to another trophic level. •Energy pyramid, sometimes called pyramid of productivity, is useful in quantifying the energy transfer from one organism to another along the food chain. The pyramid of energy is always upright since the total energy available for utilization for the successive trophic level is less than the energy available for the previous trophic level. IMPORTANCE OF ECOLOGICAL PYRAMIDS They show the feeding of different organisms in different ecosystems. It shows the efficiency of energy transfer. further damage can be prevented. Maintenance of equilibrium in the nature The condition of the ecosystem can be monitored COMPARISON OF INVERTED AND UPRIGHT PYRAMIDS THANK YOU