Lecture 9 The Ecosystem
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Transcript of Lecture 9 The Ecosystem
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12/10/09 Lecture 9: THE ECOSYSTEM 1
bio 1.0
Online bioscience course for grades 6-12
Fall 2009
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12/10/09 Lecture 9: THE ECOSYSTEM 2
bio 1.0
Class mechanics…
• Attend the online Office Hour on Tuesdays at 3 PM via tokbox-Discuss previous week’s video lecture• Online video lecture e-mailed every Wednesday-view lecture and prepare to discuss the following Tuesday• Comment on video lecture using website discussion board• Online Final Exam given 12/16/2009
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12/10/09 Lecture 9: THE ECOSYSTEM 3
bio 1.0
Lecture 9: The ecosystem
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12/10/09 Lecture 9: THE ECOSYSTEM 4
bio 1.0
Communities and Ecosystems:
http://www.youtube.com/watch?v=GYrZEid_BeM
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12/10/09 Lecture 9: THE ECOSYSTEM 5
bio 1.0
Take Homes:
I. EcosystemsII. Food websIII. BiomesIV. NichesV. The biosphere
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12/10/09 Lecture 9: THE ECOSYSTEM 6
bio 1.0
Ecosystems :
http://en.wikipedia.org/wiki/Ecosystem
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12/10/09 Lecture 9: THE ECOSYSTEM 7
bio 1.0
Central concept of ecosystems:
Central to the ecosystem concept is the idea that living organisms interact with every other element in their local environment.
http://en.wikipedia.org/wiki/Ecosystem
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12/10/09 Lecture 9: THE ECOSYSTEM 8
bio 1.0
Take Home IEcosystems
Ecosystems describe the networks of interactions between all organisms and their environments…
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12/10/09 Lecture 9: THE ECOSYSTEM 9
bio 1.0
Food webs:
http://en.wikipedia.org/wiki/Food_web
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12/10/09 Lecture 9: THE ECOSYSTEM 10
bio 1.0
Bill Nye the Science Guy-Food Web:
http://www.youtube.com/watch?v=7lmvBWEqusk
http://www.youtube.com/watch?v=rnIOTMpydpg
http://www.youtube.com/watch?v=T_vyDFW0TVU
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12/10/09 Lecture 9: THE ECOSYSTEM 11
bio 1.0
Photosynthesis:
http://www.youtube.com/watch?v=03TM6vp9HPk
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12/10/09 Lecture 9: THE ECOSYSTEM 12
bio 1.0
Take Home II
Starting with energy from the Sun being converted to sugar viaphotosynthesis food webs describe the energy flow from microbes to humans in the planetary ecosystem…
Food webs
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12/10/09 Lecture 9: THE ECOSYSTEM 13
bio 1.0
Biomes:
http://en.wikipedia.org/wiki/Biome
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12/10/09 Lecture 9: THE ECOSYSTEM 14
bio 1.0
Biomes video:
http://www.youtube.com/watch?v=ag5ATGEplbU
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12/10/09 Lecture 9: THE ECOSYSTEM 15
bio 1.0
Take Home III
Biomes are climatically and geographically defined areas of ecologically similar climatic conditions such as communities of plants, animals, and soil organisms, and are often referred to as ecosystems. Biomes are defined by factors such as plant structures (such as trees, shrubs, and grasses), leaf types (such as broadleaf and needleleaf), plant spacing (forest, woodland, savanna), and climate.
Biomes
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12/10/09 Lecture 9: THE ECOSYSTEM 16
bio 1.0
Niche:
http://en.wikipedia.org/wiki/Ecological_niche
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12/10/09 Lecture 9: THE ECOSYSTEM 17
bio 1.0
Ecological Niche of Brine Shrimp:
http://www.youtube.com/watch?v=cjylhrA6AmA
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12/10/09 Lecture 9: THE ECOSYSTEM 18
bio 1.0
Take Home IV
A niche is how an organism makes a living.
Niches
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12/10/09 Lecture 9: THE ECOSYSTEM 19
bio 1.0
Biosphere:
http://en.wikipedia.org/wiki/Biosphere
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12/10/09 Lecture 9: THE ECOSYSTEM 20
bio 1.0
DISH TV channel 212:
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12/10/09 Lecture 9: THE ECOSYSTEM 21
bio 1.0
Biosphere video:
http://www.youtube.com/watch?v=_iRhSrwWcKQ
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12/10/09 Lecture 9: THE ECOSYSTEM 22
bio 1.0
Chlorophyll monitoring from space:
http://earthobservatory.nasa.gov/GlobalMaps/view.php?d1=MY1DMM_CHLORA
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12/10/09 Lecture 9: THE ECOSYSTEM 23
bio 1.0
Take Home V
The biosphere is the global sum of all ecosystems on Earth.
The biosphere
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12/10/09 Lecture 9: THE ECOSYSTEM 24
bio 1.0
Next Week:
Computers in biology
An overview of the use of computers in biology and the revolution they have caused…
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12/10/09 Lecture 9: THE ECOSYSTEM 25
bio 1.0
instructorMark E Minie PhD