Uploaded September 2015 | Updated September 2026, 1 week ago
008 - Energy Flow in Ecosystems
In this video Paul Andersen explains how energy flows in ecosystems. Energy enters via producers through photosynthesis or chemosynthesis. Producers and consumers release the energy from food through cellular respiration. An explanation of gross primary productivity and net primary productivity are included. Energy and biomass in ecological pyramids show energy efficiency.
Do you speak another language? Help me translate my videos:
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Music Attribution
Intro
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: freesound.org/people/CosmicD/sounds/72556
Creative Commons Atribution License
Outro
Title: String Theory
Artist: Herman Jolly
sunsetvalley.bandcamp.com/track/string-theory
All of the images are licensed under creative commons and public domain licensing:
“Atomic Bond - Free Education Icons.” Flaticon. Accessed September 8, 2015. flaticon.com/free-icon/atomic-bond_65469.
“Chemosynthesis.” Wikipedia, the Free Encyclopedia, August 22, 2015. en.wikipedia.org/w/index.php?title=Chemosynthesis&oldid=677338446.
Ebyabe. Silver Springs, Florida: Silver River, July 26, 2009. Own work. commons.wikimedia.org/wiki/File:Ocala_Silver_River01.jpg.
“Hydrothermal Vent.” Wikipedia, the Free Encyclopedia, September 1, 2015. en.wikipedia.org/w/index.php?title=Hydrothermal_vent&oldid=678920124.
Lab", This image has been created during “DensityDesign Integrated Course Final Synthesis Studio” at Polytechnic University of Milan, organized by DensityDesign Research Lab Image is released under CC-BY-SA licence Attribution goes to "Roberta Rosina, DensityDesign Research. English: “A Food Web Consists of All the Food Chains in a Single Ecosystem” [Cit. National Geographic Education], December 1, 2014. Own work. commons.wikimedia.org/wiki/File:Food_Web.svg.
NASA. English: The Maps above Show One Way to Monitor the Carbon “metabolism” of Earth’s Vegetation., January 28, 2014. Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. commons.wikimedia.org/wiki/File:MOD17A2_M_PSN.ogv.
Thompsma. English: Three Different Kinds of Trophic Pyramids Are Illustrated, Including a Pyramid of Numbers (top), Pyramid of Biomass (middle), and Pyramid of Energy)., July 5, 2011. Own work. commons.wikimedia.org/wiki/File:EcologicalPyramids.jpg.
008 - Energy Flow in Ecosystems
In this video Paul Andersen explains how energy flows in ecosystems. Energy enters via producers through photosynthesis or chemosynthesis. Producers and consumers release the energy from food through cellular respiration. An explanation of gross primary productivity and net primary productivity are included. Energy and biomass in ecological pyramids show energy efficiency.
Do you speak another language? Help me translate my videos:
bozemanscience.com/translations
Music Attribution
Intro
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: freesound.org/people/CosmicD/sounds/72556
Creative Commons Atribution License
Outro
Title: String Theory
Artist: Herman Jolly
sunsetvalley.bandcamp.com/track/string-theory
All of the images are licensed under creative commons and public domain licensing:
“Atomic Bond - Free Education Icons.” Flaticon. Accessed September 8, 2015. flaticon.com/free-icon/atomic-bond_65469.
“Chemosynthesis.” Wikipedia, the Free Encyclopedia, August 22, 2015. en.wikipedia.org/w/index.php?title=Chemosynthesis&oldid=677338446.
Ebyabe. Silver Springs, Florida: Silver River, July 26, 2009. Own work. commons.wikimedia.org/wiki/File:Ocala_Silver_River01.jpg.
“Hydrothermal Vent.” Wikipedia, the Free Encyclopedia, September 1, 2015. en.wikipedia.org/w/index.php?title=Hydrothermal_vent&oldid=678920124.
Lab", This image has been created during “DensityDesign Integrated Course Final Synthesis Studio” at Polytechnic University of Milan, organized by DensityDesign Research Lab Image is released under CC-BY-SA licence Attribution goes to "Roberta Rosina, DensityDesign Research. English: “A Food Web Consists of All the Food Chains in a Single Ecosystem” [Cit. National Geographic Education], December 1, 2014. Own work. commons.wikimedia.org/wiki/File:Food_Web.svg.
NASA. English: The Maps above Show One Way to Monitor the Carbon “metabolism” of Earth’s Vegetation., January 28, 2014. Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. commons.wikimedia.org/wiki/File:MOD17A2_M_PSN.ogv.
Thompsma. English: Three Different Kinds of Trophic Pyramids Are Illustrated, Including a Pyramid of Numbers (top), Pyramid of Biomass (middle), and Pyramid of Energy)., July 5, 2011. Own work. commons.wikimedia.org/wiki/File:EcologicalPyramids.jpg.










![Students t-test
Excel file: https://dl.dropboxusercontent.com/u/561402/TTEST.xls
In this video Paul Andersen explains how to run the students t-test on a set of data. He starts by explaining conceptually how a t-value can be used to determine the statistical difference between two samples. He then shows you how to use a t-test to test the null hypothesis. He finally gives you a separate data set that can be used to practice running the test.
Do you speak another language? Help me translate my videos:
http://www.bozemanscience.com/translations/
Music Attribution
Intro
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/
Creative Commons Atribution License
Outro
Title: String Theory
Artist: Herman Jolly
http://sunsetvalley.bandcamp.com/track/string-theory
All of the images are licensed under creative commons and public domain licensing:
1.3.6.7.2. Critical Values of the Student’s-t Distribution. (n.d.). Retrieved April 12, 2016, from http://www.itl.nist.gov/div898/handbook/eda/section3/eda3672.htm
File:Hordeum-barley.jpg - Wikimedia Commons. (n.d.). Retrieved April 11, 2016, from https://commons.wikimedia.org/wiki/File:Hordeum-barley.jpg
Keinänen, S. (2005). English: Guinness for strenght. Retrieved from https://commons.wikimedia.org/wiki/File:Guinness.jpg
Kirton, L. (2007). English: Footpath through barley field. A well defined and well used footpath through the fields at Nuthall. Retrieved from https://commons.wikimedia.org/wiki/File:Footpath_through_barley_field geograph.org.uk 451384.jpg
pl.wikipedia, U. W. on. ([object HTMLTableCellElement]). English: William Sealy Gosset, known as “Student”, British statistician. Picture taken in 1908. Retrieved from https://commons.wikimedia.org/wiki/File:William_Sealy_Gosset.jpg
The T-Test. (n.d.). Retrieved April 12, 2016, from http://www.socialresearchmethods.net/kb/stat_t.php Students t-test](https://i.ytimg.com/vi/pTmLQvMM-1M/mqdefault.jpg)