Intro to Ecology: Why Did All These Elephants Die?: Crash Course Biology #5

Ecology is the study of the interactions of living things with each other and their environment. It’s a field that not only lets us explore the interconnections between living things, but also how our environment affects us, and how we influence it in turn. In this episode of Crash Course Biology, we’ll get an overview of the field of ecology, see how matter and energy are conserved and transferred through ecosystems, and follow an ecological mystery surrounding the deaths of hundreds of elephants in Botswana, Africa.

Chapters:
An Ecological Mystery 00:00
Biotic & Abiotic Factors 1:13
Ecosystems 3:15
Fields of Ecology 5:54
Trophic Levels 7:04
Energy Flow through Ecosystems 9:25
Review & Credits 11:48

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Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Tawny Whaley, Sean Saunders, Katie, Tori Thomas, DL Singfield, Ken Davidian, Stephen Akuffo, Toni Miles, Steve Segreto, Kyle & Katherine Callahan, Laurel Stevens, Burt Humburg, Aziz Y, Perry Joyce, Scott Harrison, Mark & Susan Billian, Alan Bridgeman, Rachel Creager, Breanna Bosso, Matt Curls, Jennifer Killen, Jon Allen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Eric Koslow, Jennifer Dineen, Indija-ka Siriwardena, Jason Rostoker, Ken Penttinen, Nathan Taylor, Les Aker, William McGraw, ClareG, Rizwan Kassim, Constance Urist, Alex Hackman, Pineapples of Solidarity, Katie Dean, Stephen McCandless, Wai Jack Sin, Ian Dundore, Caleb Weeks
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Want to find Crash Course elsewhere on the internet?

[G-Tarun]

Love how this series rigorously covers concepts, but also takes care to show science in action, and the discipline of biology itself. Looking forward to learning with Dr. Sammy throughout this series!

[BoothbyGardens]

I've been gardening for a few years and have wanted to get into the science of what I'm growing. Low and behold a new biology crash course AND botany crash course show up! Thanks for helping me dip my toes in how things are living in my garden.

[SavageSketchbook]

Thanks for these videos helps me a lot.

[CaseyMarkov]

I feel bad for the jellyfish behind the guy I think we need to #freethejellyfish

[brucefrizzell]

Well done .
Greetings from
Lampasas Texas .

[NickGamerBmv]

Like your vids because of the knowledge you give us all

[nietzschescodes]

so what the ecologists did for the elephants? did they remove the cyanobacteria from the water so they don't kill more elephants?

[mpumilanga]

Batswana is the people

BOtswana is the country

[francoislacombe]

Those jellyfish in the background, are they real or are they some sort of prop or animation? 🤔

[shadebug]

I only just realised that an entomologist is a spider man so that intro…

[vosgressukhoi]

How much protein is produced in human body per day?

[OlTrev]

I love Dr. Sammy, but part of me thinks the dude from Casual Geographic would be a great guest host. 😅

[hienable]

I knew it! Climate change was somehow responsible for the massive die-offs! Everything is caused by it! Last week my girlfriend broke up with me because of climate change! Yesterday I stepped on some Legos, all because of the pesky climate change!
All jokes aside, thank you Dr Sammy and team for putting so much effort into these videos! These must've took so much time and effort. Good job!

[DracarmenWinterspring]

4:49 - description not relatable to a non-American audience... "size 18 feet" sounds tiny to me :P

[storytellerarchive]

heat death min 1:15 => skipt to min 11 for anser was kinda right lol

[cyrene]

Omg I get so upset about poachers destroying species. Humans are monsters! 😭😭😭

[multipletanksyndrome]

We have no idea of the ramifications of climate change.