Introducing Ecosystems Lesson 3 - SNC 1W PDF
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2023
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This document provides notes on ecosystems, including different types like natural and artificial ecosystems, and their components. It also touches upon topics such as biodiversity, levels of organization within ecosystems, and sustainability.
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Introducing Ecosystems Lesson 3 SNC 1W Learning Goals What is an ecosystem and how is it organized? Why is sustainability important? Ecosystem An ecosystem is all the living organisms that share a region, and interact with each other and their non-living environment....
Introducing Ecosystems Lesson 3 SNC 1W Learning Goals What is an ecosystem and how is it organized? Why is sustainability important? Ecosystem An ecosystem is all the living organisms that share a region, and interact with each other and their non-living environment. The components of an ecosystem are interrelated, which means that changes in one part can affect the other parts. Types of Ecosystems Ecosystems can be divided into 2 groups: 1. Natural Ecosystems An ecosystem that has occurred over time due to the effects of nature. Ex. meadow, forest, pond, stream 2. Artificial Ecosystems An ecosystem that is planned and maintained by humans. Ex. park, farm, zoo, schoolyard Types of Natural Ecosystems Natural ecosystems can be sub-divided into 2 groups: A. Aquatic Ecosystem - An ecosystem that exists in a water body. B. Terrestrial Ecosystems - An ecosystem that exists on land. Examples of Aquatic Ecosystems Ocean Pond River Lake *Marsh or Swamp Stream (purifies air and water, reduces flooding and erosion!) Examples of Terrestrial Ecosystems Rainforest Mountain Grassland Urban/ Artificial Desert Tundra Levels of Organization in an Ecosystem Biodiversity is the number of different species in an ecosystem. Ecology is the study of how species interact with each other and with their environments. ○ Scientists study ecology at various levels of organization. Individual: any living thing or organism Population: all the individuals of a single species that live in the same area Community: all the different populations that live in the same area Ecosystem: all the living organisms in a community (biotic), interacting with the environment (abiotic) Biosphere: includes all the ecosystems on Earth Habitat and Ecological Niche A habitat is the place where an organism lives. Every species interacts with its environment and other species. These interactions are referred to as the species’ ecological niche. The ecological niche of a species includes what it eats, where it lives, and how it behaves. No two species have the same niche. it’s an organism’s role in the environment Sustainability Most ecosystems are sustainable, meaning they are able to maintain natural conditions without interruption, weakening or loss of biodiversity for long periods of time. Class Practice Practice & Activity: Complete the practice questions in the handout. When you are finished: → Complete the Case Study on Artificial and Natural ecosystems.
