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Learn Biology: Ecosystem Definition & Biotic Factors vs. Abiotic Factors

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Uploaded on Jan 21, 2011

Mary Poffenroth, an adjunct professor of biology, hosts this "Learn Biology" video for Mahalo.com. In the video, she discusses what an ecosystem is and the differences between biotic and abiotic factors existing in ecosystems. She talks about how each element interacts within the ecosystem.

Ecosystems come in different forms all across the world. There are terrestrial ecosystems which include most of the land-based systems. Tundras, forests in tropical and temperate areas, grasslands and deserts are all considered terrestrial ecosystems. Freshwater ecosystems cover lakes, rivers and marshlands. Marine ecosystems include the various environments of open-water oceans and coastal sea life.http://www.climate.org/topics/ecosyst...
Ecosystems affect human civilization in a number of ways. Crops and livestock, two primary sources of food for people around the world, are provided through ecosystems. Ecosystems also provide clean
water and oxygen for humans to drink and breathe.http://www.climate.org/topics/ecosyst... Materials, such as wood, are taken from ecosystems and are used to build and make a variety of products.http://www.idahoforests.org/wood_you.htm

Ecosystem Definition
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The biotic factors of an ecosystem refer to all of the living organisms in that particular system. The word "biotic" is taken from the Greek word
bios, which means "life".http://www.thefreedictionary.com/bio- Biotic organisms include fungi, bacteria, plants and animals. All of these organisms work to promote the vitality, adaptation and preservation of the ecosystem. The types of organisms vary from ecosystem to ecosystem.http://www.youtube.com/watch?v=y-wpbh...
The abiotic factors in an ecosystem refer to the non-living components involved in that system. These factors are not living themselves but they do allow biotic organisms to live in their particular ecosystems. Abiotic factors include elements like hydrogen, oxygen, nitrogen, phosphorus and carbon. It also includes sunlight, soil and water.
http://www.mahalo.com/learn-biology-e... abiotic factors in an ecosystem refer to the non-living components involved in that system. These factors are not living themselves but they do allow biotic organisms to live in their particular ecosystems. Abiotic factors include elements like hydrogen, oxygen, nitrogen, phosphorus and carbon. It also includes sunlight, soil and water.

Biotic and Abiotic Factors
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The biotic factors of an ecosystem refer to all of the living organisms in that particular system. The word "biotic" is taken from the Greek word
bios, which means "life".http://www.thefreedictionary.com/bio- Biotic organisms include fungi, bacteria, plants and animals. All of these organisms work to promote the vitality, adaptation and preservation of the ecosystem. The types of organisms vary from ecosystem to ecosystem.http://www.youtube.com/watch?v=y-wpbh...
The abiotic factors in an ecosystem refer to the non-living components involved in that system. These factors are not living themselves but they do allow biotic organisms to live in their particular ecosystems. Abiotic factors include elements like hydrogen, oxygen, nitrogen, phosphorus and carbon. It also includes sunlight, soil and water.
http://www.mahalo.com/learn-biology-e... abiotic factors in an ecosystem refer to the non-living components involved in that system. These factors are not living themselves but they do allow biotic organisms to live in their particular ecosystems. Abiotic factors include elements like hydrogen, oxygen, nitrogen, phosphorus and carbon. It also includes sunlight, soil and water.

Read more by visiting our page at:
http://www.mahalo.com/learn-biology-e...

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