Ecosystems Biotic and Abiotic Factors PDF

Biotic and Abiotic Factors Objective: I can identify biotic and abiotic factors in an ecosystem. LE Standards: 1.1b An ecosystem is shaped by the nonliving environment as well as its interacting species. The world contains a wide diversity of physical conditions, which creates a variety of environm...

Biotic and Abiotic Factors Objective: I can identify biotic and abiotic factors in an ecosystem. LE Standards: 1.1b An ecosystem is shaped by the nonliving environment as well as its interacting species. The world contains a wide diversity of physical conditions, which creates a variety of environments. 1.1d The interdependence of organisms in an established ecosystem often results in approximate stability over hundreds and thousands of years. For example, as one popu- lation increases, it is held in check by one or more environmental factors or another species. Slide1 Motivation/Activating prior knowledge The prefix “Bio” means life… The prefix “a” means no or not… Knowing this, what can you infer is the meaning of “biotic” and “abiotic” factors? Slide2 Mini-Lesson Ecosystem= Defined area where organisms interact with living and non-living factors of the environment. Slide3 There is “interconnectedness” in each ecosystem! The theme of interconnectedness or interdependence means that the members of an ecosystem are dependent on one another for their survival. For example: plants depend on animals to give off carbon dioxide so they can use it in photosynthesis. Slide4 Mini-Lesson Biotic factors: the living components of the environment and include all of the living things that affect the organism. Examples of biotic factors: animals, trees, parasites, pathogens, seeds, fruits, etc. Slide5 Mini-Lesson Abiotic factors: the nonliving components of the environment and include all of the non-living things that affect the organism. Examples of abiotic factors: temperature, humidity, pH, salinity, oxygen concentration, amount of sunlight, soil type, rainfall, climate, wind and precipitation Slide6 Activity: Place the following in the correct category. Biotic Abiotic 1. Frog 2. Oak tree 3. Water 4. Almond 5. Sunlight 6. Human 7. Rocks 8. Soil 9. Fungus 10. Air Slide7 Regents Questions 1 3 5 2 4 Slide8 Closure: What is the “theme” being portrayed by the cartoon? Why is it important for an ecosystem?  Extended Practice Click the following link to practice using a simulation: http://www.glencoe.com/sites/common_assets/science/virtual_labs/C T08/CT08.html