Section 4.2 ppt..ppt - Lesson Overview Niches and Community...

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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions Lesson Overview Lesson Overview 4.2 Niches and 4.2 Niches and Community Interactions Community Interactions
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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions Tolerance Every species has its own range of tolerance , the ability to survive and reproduce under a range of environmental circumstances. A species’ tolerance for environmental conditions, then, helps determine its habitat —the general place where an organism lives.
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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions Defining the Niche An organism’s niche describes not only the environment where it lives, but how it interacts with biotic and abiotic factors in the environment. Also the way in which the organism uses them to survive and reproduce.
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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions Resources and the Niche The term resource can refer to any necessity of life, such as water, nutrients, light, food, or space. For plants, resources can include sunlight, water, and soil nutrients. For animals, resources can include nesting space, shelter, types of food, and places to feed.
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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions Physical Aspects of the Niche Part of an organism’s niche involves the abiotic factors it requires for survival. Most amphibians, for example, lose and absorb water through their skin, so they must live in moist places. If an area is too hot and dry, or too cold for too long, most amphibians cannot survive.
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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions Biological Aspects of the Niche Biotic factors it requires for survival, such as when and how it reproduces, the food it eats, and the way in which it obtains that food. Ex. Birds on Christmas Island in the Indian Ocean live in the same habitat prey on fish of different sizes feed in different places. Thus, each species occupies a distinct niche.
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Lesson Overview Lesson Overview Niches and Community Interactions Niches and Community Interactions The Niche What is a niche?
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  • Fall '17
  • isaac
  • Biological interactions, Sea urchin

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