UNDERSTANDING FOOD WEBS.pptx Sangha saab

Make by Davinder Singh

1. UNDERSTANDING FOOD WEBS THE INTERCONNECTEDNESS OF ECOSYSTEMS

2. INTRODUCTON TO FOOD WEBS FOOD WEB, A COMPLEX NETWORK OF INTERCONNECTING AND OVERLAPPING FOOD CHAIN SHOWING FEEDING RELATIONSHIPS WITHIN A COMMUNITY. A FOOD CHAIN SHOWS HOW MATTER AND ENERGY FROM FOOD ARE TRANSFERRED FROM ONE ORGANISM TO ANOTHER, WHEREAS A FOOD WEB ILLUSTRATES HOW FOOD CHAIN INTERWINE IN AN ECOSYSTEM. FOOD WEBS ALSO DEMONSTRATE THAT MOST ORGANISMS CONSUME OR ARE CONSUMED BY MORE THAN ONE SPECIES, WHICH FOOD CHAIN OFTEN DO NOT SHOW.

3. FOOD WEB

4. COMPONENTS OF A FOOD WEB Producers: Organisms that make their own food (e.g., plants, algae). Consumers : Organisms that eat other organisms.   Primary Consumers : Herbivores that eat producers.   Secondary Consumers : Carnivores that eat primary consumers.   Tertiary Consumers : Top predators that eat secondary consumers. Decomposers : Organisms (e.g., fungi, bacteria) that break down dead organic material.

5. EXAMPLE OF FOOD WEB

6. ENERGY FLOW IN FOOD WEB Energy flows from producers to various consumer levels. Concept of Energy Transfer :   - Only about 10% of energy is transferred from one trophic level to the next.

7. IMPORTANCE OF FOOD WEBS IN ECOSYSTEM Biodiversity : Supports a rich variety of life. Stability: A diverse food web can better withstand environmental changes. Nutrient Cycling : Decomposers play a vital role in recycling nutrients.

8. HUMAN IMPACT ON FOOD WEBS Overfishing : Disrupts marine food webs. Pollution: Can affect the health of various trophic levels. Habitat Destruction : Leads to loss of species and imbalance in food webs .

9. CONCLUSION food webs are not just diagrams; they are a representation of the complex and interconnected nature of life on Earth. They help us understand the importance of each organism in maintaining ecosystem balance and the potential consequences of disrupting this balance.

10. FOOD CHAIN IN NATURE IS ITS GREATEST IRONY. THE DEATH OF ONE IS A CELEBRATION FOR ANOTHER .

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