University:
Acadia University
Course:
BIOL 2663 | Marine Biology
Academic year:

2024
Views:

263

Pages:

4
Author:

Nabila N.

Food Chains and Food Webs: Understanding Ecosystems This presentation will explore the intricate relationships within ecosystems, explaining the vital roles of food chains and food webs Introduction to Ecosystems Ecosystems are communities of living organisms interacting with their environment. They are interconnected systems with complex relationships between plants, animala, and their surroundings. They encompass various biomes, from forests and grasslands. to oceans and deserts. Each biome has unique characteristics, influencing the organisms that inhabit it. Producers, Consumers, and Decomposers Producers Producers are organisms like plants that create their own food through photosynthesis Consumers Consumers rely on other organisms for food. They can be herbivores, carnivores, or omnivores. Decomposers Decomposers like fungi and bacteria break down dead organisms. returning nutrients to the ecosystem Energy Flow in Food Chains Producers Autotrophs Primary Consumers Herbivores Secondary Consumers Camivores Tertiary Consumers Top Predators Predator-Prey Relationships Predator The hunter 1 Prey The hunted 2 Forest Crane Interconnected Food Webs Multiple Chains Food webs depict the complex interactions between different species. Ecosystem Stability Interconnections ensure stability, as populations are not solely reliant on one food source. Keystone Species and Trophic Levels 1 Keystone Species Disproportionate impact on ecosystem 2 Trophic Levels Position in food chain Importance of Biodiversity in Ecosystems Resilience Diversity increases resilience to disturbances Stability Stability through interconnectedness. Sustainability Sustaining healthy ecosystems for future generations.