Ecosystem types and characteristics
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The document discusses ecosystems, defining an ecosystem as a biological entity consisting of biotic and abiotic components that interact with each other and their environment. It notes that microbes play an important role in all ecosystems, including the human intestine. The document also outlines the typical flow of energy and inorganic nutrients through ecosystems, with the sun as the primary energy source and heat as the ultimate fate of energy, while nutrients are cycled through producers, consumers, decomposers, and an inorganic nutrient pool.
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Ecosystem types and characteristics
- 2. ECOSYSTEM The term ‘ECOSYSTEM’ was given by A.C TENSLEY in 1933. Ecosystem is a biological entity including both biotic and abiotic components and their interaction with one another and with environment.
- 9. MICROBES • MICROBES PLAYS A VERY IMPORTANT ROLE IN ENVIRONMENT AS THEY PRESENT IN EVERY ECOSYSTEM EVEN IN HUMAN INTESTINE.
- 11. ENERGY FLOW IN ECOSYSTEM SUN PRODUCER CONSUMER DECOMPOSER INORGANIC NUTRIENT POOL HEAT HEAT HEAT
- 12. To summarize: In the flow of energy and inorganic nutrients through the ecosystem, a few generalizations can be made: 1. The ultimate source of energy (for most ecosystems) is the sun 2. The ultimate fate of energy in ecosystems is for it to be lost as heat. 3. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another. 4. Decomposers remove the last energy from the remains of organisms. 5. Inorganic nutrients are cycled, energy is not.