Energy Flow in Ecosystems

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.

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Music Attribution

Intro
Artist: CosmicD
Creative Commons Atribution License

Outro
Title: String Theory
Artist: Herman Jolly

All of the images are licensed under creative commons and public domain licensing:

[dragonracer]

for ayone at k12 who needs the times for the questions here u go. 0:20, 0:51
1:03 2:19 3:13 3:36 4:53 5:23 5:43 6:31 . hope this helps :)

[Brandi.Nicole]

I cannot believe high school students study this! I never did. Nothing even close to it in HS. Everything was general.
Now as an adult I’m like WT?! and my teens are like, yeah duh - we learned this. You’re generation is going to do so much for our environment. This is so important in understanding our anthropological affects on the environment. You will be the generation that heals our planet! 💕🤗

Very helpful! I want to be able explain this as clearly as you did one day. I appreciate your videos! Thank you so much.

[tankgirl]

You really are such a good teacher. Clear, pleasant and good at using models and examples that are easy to understand. Great job!

[Nightcaat]

Turn on subtitles and slow down the video to 0.75 or 0.5 if it is too fast for you.
Good video. Watched it in class.

[MC-Minority]

A real quick thing I want to add, the energy pyramid. There is a role of the 2nd law of thermodynamics, "energy does not diminish, but the ability to use it does." Something like that, that's why you see only 10% of the energy being passed down, due to respiration taking most of it and keep in mind of that law.

[jennayn]

Yeoo I have a science test on this tmrw so this helped😂

[fouadnara]

I have a Biology test next Tuesday, and you summed up all the 9th grade 3rd season material that is included in this test, I understand everything now :D thx

[susslewussle]

Thanks man. For the people who are complaining its too fast, just turn on subtitles and turn the video speed down to like 0.75 or 0.5. Jeez like srsly guys. Stop being so bloodsucking.

[lexieflexie]

wow!!! i learned much in this video it was helpful thank you much i will share this to all my friends and you sound so excited during this vid

[hunnyfish]

That was helpful. When you say that there is a common misconception that plants respire, do you mean it is a misconception that plants respire with byproducts of CO2 and H2O? Because later on in the video, you said plants use about 60% of energy through respiration.

[ABitOfTheUniverse]

Paul, can you imagine a way we could industrialize these processes; chemosythesis and/or photosynthesis?
If we could take our own waste carbon dioxide and use it to produce sugars, would that be a cost effective way to save on production time such that it might entice corporations to get into the business? It would free up a lot of land that we could use for other things, like sanctuaries, preserves, mining or just to reduce the cost of living so that people could distribute themselves more evenly around the globe and not be so isolated to ports where our other waste products may harm things like aquatic biomes such as coral reefs.

I've been thinking about this for a long time, but in terms of production in space and on other worlds, but the benefits would really help here on Earth, especially with the big panic over CO2 production over the last 20 years or so.

I was thinking on places like Mars and Venus, after reading The Case for Mars by Robert Zubrin. He discussed the Sabatier reaction, CO2 + 4 H2 → CH4 + 2 H2O + energy, but if we could convert that CO2 into C6H12O6, we'd have fuel for life forms as well. On Venus maybe if we could use the SO2 in the atmosphere the way H2S is used in chemosynthesis, we could get the ball rolling for life there.

Lots to think about.

[vanessagomez]

your videos have been crucial while learning during quarantine!!!

[SteveFitzpatrick]

Thank you for these videos! Great learning resources for college-level intro environmental science students.

[girijagirijagaran]

Literally helps me a lot sir thankyou


From INDIA

[heisenberginstitute]

Very helpful we here all appreciate this

[fermingaitan]

Very well explained and very helpfull too!! Good Video

[silvialopes]

Thank you really much for everything you teach! You are so good 😊

[onlyhugs]

Wow! The Video Help me a lot sir . Thanks for making an Perfect video for me cause I have an Lesson relate to this in my Biology book . Thanks for this Video .

[kellyjones]

Thank you, so much.  Can you tell me about what food we can eat that balance our human Ecosytems

[RA-exir]

if u look at him from your peripheral vision all of a sudden it feels like his head is floating in space