Logistic Growth Video – https://youtu.be/rXlyYFXyfIM
012 – Population Ecology
In this video Paul Andersen explains how population ecology studies the density, distribution, size, sex ration, and age structure of populations. Intrinsic growth rate and exponential growth calculations are included along with a discussion of logistic growth. K-selected and r-selected species are explained along with survivorship curves.
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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:
Agriculture, U. S. Department of. Whooping Crane in Flight in Texas. USDA Photo by John Noll., March 18, 2011. Flickr: 20110214-USDA-JN-0001. https://commons.wikimedia.org/wiki/File:Whooping_Crane_in_flight_in_Texas.jpg.
“Bird on Branch – Free Animals Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/bird-on-branch_61289.
“Canada Lynx.” Wikipedia, the Free Encyclopedia, July 25, 2015. https://en.wikipedia.org/w/index.php?title=Canada_lynx&oldid=672981991.
Headquarters, U. S. Fish and Wildlife Service. Adult Whooping Crane (Grus Americana) with Chick., February 23, 2012. Adult Whooping Crane and Chick. https://commons.wikimedia.org/wiki/File:Adult_Whooping_Crane_and_Chick_(6923604379).jpg.
Husthwaite, Ray. English: Survivorship Curves, 23 April 09. Own work (Original text: I created this work entirely by myself.). https://commons.wikimedia.org/wiki/File:Survivorship_Curves.jpg.
Karine, Gill-Weir. “The Whooping Cranes: Survivors Against All Odds,” n.d. http://www.prairiefirenewspaper.com/2010/09/the-whooping-cranes-survivors-against-all-odds.
Robertson, D. Gordon E. English: Snowshoe Hare (Lepus Americanus), White Morph, Shirleys Bay, Ottawa, Ontario, Canada, January 21, 2013. Own work. https://commons.wikimedia.org/wiki/File:Snowshoe_Hare,_Shirleys_Bay.jpg.
Sasata. English: The Whooping Crane, Grus Americana at the Calgary Zoo., September 11, 2010. Own work. https://commons.wikimedia.org/wiki/File:Grus_americana_Sasata.jpg.
“Standing Up Man – Free People Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/standing-up-man-_10522.
“Tree Silhouette – Free Nature Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/tree-silhouette_46564.
“Turtle Shape – Free Animals Icons.” Flaticon. Accessed September 15, 2015. www.flaticon.com/free-icon/turtle-shape_47331.
Video Rating: / 5
Hank brings us to the next level of ecological study with ecosystem ecology, which looks at how energy, nutrients, and materials are getting shuffled around within an ecosystem (a collection of living and nonliving things interacting in a specific place), and which basically comes down to who is eating who.
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Table of Contents
1) Defining Ecosystems 0:49:1
2) Trophic Structure 4:44:1
a) Primary Producers 5:27
b) Primary Consumers 5:41
c) Secondary Consumers 5:49:1
d) Tertiary Consumers 5:58:2
e) Detrivores 6:08:1
3) Bioaccumulation 8:47
References and image licenses for this episode in the Google doc here: http://dft.ba/-3f2M Support CrashCourse on Subbable: http://subbable.com/crashcourse
Video Rating: / 5
Doesn't that "e" in the equation imply that the newborns start breeding straight away? Or is this only ment for huge time scales.
will E always be 2.71 in any equation?
dab son
that was really helpful
clearly explained!! thank you
Haha I could stop going to class way better than my hour long lectures! Thank you!!
Didn't help at all
Thank you! That really helped.
You saved my life 😭 king of teaching!
omg thank you! so needed!
ayyyy shoutout to anyone in honors bio
Rabbits have no gender
Did anyone else get emotional when he incinerated those rabbits?
Super helpful! Thank you!
I haven't understood how he got to an R of 0.5?
Where can I find your AP biology video arranged sequentially as per topic or as syllabus?
My teacher of the university suck cock, but you are an incredible teacher 🙂
Thanks Mr Anderson, ur a wonderful teacher.
pen pineapple apple pen
Thanks, this was really helpful. Concise and informative. Hope we see more of your videos on ecology.
cool. even at my age I find your lectures ( talks ) interesting and informative.
Types of Ecosystems:
Forest
Rainforest
Desert
Mesa
Grassland
Savanna
Peat
Taiga
Tundra
Mountain
Ocean
That friends is why I do not eat Tuna
I thought deep sea bacterium made up the majority of biomass gaining their energy from chemosynthesis…So aren't they the so called kings
this video is great, ill be watching them all semester. much appreciated to the people/person that made the video.
he reminds me of pewdiepie… but smart..
bimo lads
I'm studying at university and this has helped me MASSIVELY to remember certain things, thank you!
Hhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeellllllllllllllllllllllllppppppppppppppp me understand!
Hank describes those 'magic eye pictures' from 1994. I totally thought of that pissed off dude in the movie Mallrats who freaks out after everyone other than himself at the mall can see the hidden sailboat in the picture
It's funny when I get a compliment on being vegan from a science-driven person 🙂
SUPER-AMAZING-FRUIT-MUNCHING-COMMENT!!!
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I've got a major crush on this dude.
8:50 The increase in a toxin moving up a food chain should be Biomagnification, not Bioaccumulation.
this video is very very bad
I hate this guy because my teacher always makes us take notes to whatever he is talking about and he talks to fast
you guys are such great YouTube people!
loved it
obi wan * can you speak in simple talking? ( you do not need long speaking…)
How come there's no biome ecology?