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Dec
20

Community Ecology: Feel the Love – Crash Course Ecology #4

Interactions between species are what define ecological communities, and community ecology studies these interactions anywhere they take place. Although inte…
Video Rating: 4 / 5

25 comments

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  1. pvtblue says:

    crash course really like their chairs?

  2. Darryl Brice says:

    Can you feel the love???

  3. Ian Nelson says:

    No0ooo! “Nitch” rather than “Neesh”. *dies inside a little* (great series!)?

  4. Xinci Tan says:

    Thanks Hank! Love Crash Course! When nothing else on the internet could
    explain Hutchinsonian Niches to me, you made things perfectly clear. You
    never FTBA :D?

  5. Marx Hamakhan says:

    Isn’t “niche” pronounced like “neesh”?

  6. Bart De Bock says:

    i’d have expected mention of farmer ants in this topic, i mean they’re
    basically ants that do the same that humans do, keeping other animals and
    ‘milking’ them for honeydew. or it gets even better with a certain species
    of ants.
    (following is copy pasted from wikipedia)
    An interesting variation in ant-aphid relationships involves lycaenid
    butterflies and Myrmica ants. For example, Niphanda fusca butterflies lay
    eggs on plants where ants tend herds of aphids. The eggs hatch as
    caterpillars which feed on the aphids. The ants do not defend the aphids
    from the caterpillars but carry the caterpillars to their nest. In the
    nest, the ants feed the caterpillars, which produce honeydew for the ants.
    When the caterpillars reach full size, they crawl to the colony entrance
    and form cocoons. After two weeks, butterflies emerge and take flight.?

  7. Aof E says:

    If enough people say it the same way, then it’s an accent.

  8. alldayeveryday47 says:

    “there will probably will be a lot of blood so you should probably bring
    your poncho” LOL

  9. Zelle13 Forever9 OT12 Hallyu~ says:

    Cool story, bro ~,^

  10. Zelle13 Forever9 OT12 Hallyu~ says:

    Mmmm… No gloating here xp When I commented 5 months ago, almost everyone
    was here solely for school. I wanted to know if I was alone or not. Guess I
    wasn’t hehe No need to call people names or be angry either. It’s
    unproductive, especially if you have a test to be studying for~ Good luck,
    by the by ^^ Hope Hank’s awesome videos helped you understand the topic and
    get a good score XD

  11. Adam Cassidy says:

    yfw its your speakers

  12. Adam Cassidy says:

    I have a test today, you gloat-faced bastard!

  13. feralshad0w says:

    I love your videos, but get rid of the humming please…. It bothers my
    ears, like nails on a chalkboard.

  14. Yourloyalservant says:

    My grade 8 science teacher let us watch Vsauce a week ago.
    /watch?v=9m3dQC6IfwY

  15. Rachael LlamaTyrannosaurus says:

    thanks!

  16. Fiona Reeves says:

    I got to watch this is Bio class today and I nearly crapped myself when
    Hank poped up. My teacher thought i was crazy

  17. inademv says:

    I watch these as background noise. I’ve taken the courses and remember the
    content well but it’s pleasurable to hear it all again in a more casual
    atmosphere and in a much much more enjoyable manner.

  18. magister343 says:

    There are actually a lot of plants (especially in tropical rain forests)
    that steal far more nutrients from their fungal symbiotes than they donate.
    Some hardly bother with photosynthesis at all, because they can use the
    fungus to steal nutrients made by neighboring plants.

  19. Carlos Portela says:

    science ecology love interaction competition interspecies resources?

  20. Matthew Sky Vied says:

    #science #sciencemonday (because science is for every day)?

  21. Guided Notes says:

    Fill in the blanks.
    Community Ecology
    Community Ecology: Feel the Love – Crash Course Ecology #4
    makes things more difficult than we’d like them to be. However, it is
    necessary becomes there is a limited amount of resources on the planet.
    Also, reactions between species are what defines ecological communities.
    All species, even plants compete.
    Important factors in an environment are factors- the population will only
    get as big as these factors will allow. Sometimes, a particular species
    can, over time, eliminate another entirely, this is known as
    . When two species compete this is eventually bound to happen as one
    will be more successful than the other. This is shown by the competitive
    exclusion principle (founded by Gause when he pitted two
    types of protists against each other).
    However, Earth is not a constant circle of competition, predation, and
    extinction for a couple reasons:
    1.
    2.
    Species adapt/ survive by finding a ecological , the sum of all resources
    (abiotic and biotic) that a species uses in an environment. A niche can
    also be called its job; animals find the one that they’re best at to
    provide food and to avoid competitive exclusion. If there was no
    competition, though, animals could live different (better) lifestyles- this
    ideal situation is known as a
    niche. What actually happens, though, is called a niche, meaning
    there’s competition but everyone wins just a little bit.
    Notes on Robert Macarthur:

    Macarthur discovered – when similar species settle into separate niches so
    they can coexist. When organisms behave in such ways it increases their
    odds for survival, traits associated with this behavior start being
    selected (natural selection), when this occurs it is called . Therefore,
    in some ways competition can help evolution.
    In some cases species will form relations with other species in order to
    survive. The relationship may benefit one of them or both of them. In
    both species benefit, in one species benefits and the other remains
    neutral. When species become so reliant on each other that one would die
    without the other it is known as mutualism.
    (Not in Video):
    Type of Interaction Direct Effect on Species 1 Direct Effect on Species 2
    Commensalism + 0
    Mutualism + +
    Interspecific Competition – –
    Predation + –
    Parasitism + –
    0 = No Direct Effect
    + = Positive Effect
    – = Negative Effect ?

  22. Janine Taylor says:

    wow you talk fast! but it was such an interesting video :)

  23. Julie Pratt says:

    I am.

  24. pinkpolarbear24 says:

    Same. Its niche (pronounced nee-sh)

  25. kathmondar91 says:

    Also, the barnacles are very sharp, the whales probably use them as a
    weapon or shield lol!

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