Why Do These Trees Refuse to Touch?

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  • Опубліковано 4 лис 2024

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  • @SciShow
    @SciShow  4 роки тому +48

    Go to Brilliant.org/SciShow to try their Beautiful Geometry course. The first 200 subscribers get 20% off an annual Premium subscription.

    • @bcast9978
      @bcast9978 4 роки тому +1

      Kajagoogoo

    • @Musicswagg86
      @Musicswagg86 4 роки тому

      Hank can you please explain this phenomenon www.reddit.com/r/confusing_perspective/comments/a0oxnt/circular_tree_branches/
      I can't find any explanation for it..thanks

    • @MrMyKidd
      @MrMyKidd 4 роки тому +1

      @@Musicswagg86 it is merely an effect of light and has nothing specifically to do with the trees themselves. It can also be observed through a badly scratched piece of glass. It has to do with the way the light is spread out radially from a central source. Any random field of thin lines between the light source and yourself such as branches or scratches in glass will have highlights in the direction of the light source and shadowing in the direction away from the light.
      The result are these "Halos" that appear around the light source.

    • @Musicswagg86
      @Musicswagg86 4 роки тому +1

      @@MrMyKidd thank you

  • @danielberry4728
    @danielberry4728 4 роки тому +602

    They’re just being polite, they don’t want to throw shade.

  • @Deadeye313
    @Deadeye313 4 роки тому +313

    The trees maybe just learned to get along. That could be a crowning achievement.

  • @AndrewPonti
    @AndrewPonti 4 роки тому +15

    "Crown shyness" might be one of the cutest things I've ever heard about trees! This video illustrates just one more thing to show what amazingly complex life trees and plants are.

  • @Shaden0040
    @Shaden0040 4 роки тому +413

    I bet their roots are intertwined though.

  • @yetinother
    @yetinother 4 роки тому +323

    This what happens when you crowd introverts together.

  • @monkg3i
    @monkg3i 4 роки тому +204

    Tree: *touches a different tree*
    All the other trees: It’s treeson then

    • @kregadeth5562
      @kregadeth5562 4 роки тому +3

      Foresthunter 42 stop it with the meme 🛑

    • @Ninjaananas
      @Ninjaananas 4 роки тому +4

      Of course it is treeson, son of trees.

    • @Pining_for_the_fjords
      @Pining_for_the_fjords 4 роки тому +1

      Why don't you make like a tree and get out of here?

    • @rjgonzalez9220
      @rjgonzalez9220 4 роки тому +1

      I am Groot???

    • @noahcarlton4625
      @noahcarlton4625 4 роки тому

      @@Pining_for_the_fjords sorry can't I'm rooted in place.

  • @calamusgladiofortior2814
    @calamusgladiofortior2814 4 роки тому +513

    They respect other tree’s personal boundaries. Nobody likes a tree that gets all handsy with its neighbours. #treetoo

    • @jdhall420
      @jdhall420 4 роки тому +9

      caught this comment right as i was Xing out of the vid, had to come back to drop my like

    • @விஷ்ணு_கார்த்திக்
      @விஷ்ணு_கார்த்திக் 4 роки тому +4

      Except for Strangler Fig Tree

    • @macnutz4206
      @macnutz4206 4 роки тому +4

      @@விஷ்ணு_கார்த்திக் There are those who are rude and pushy, among every group. Of course, it is difficult to ignore them when they are trying to strangle you.

    • @asherdie
      @asherdie 4 роки тому +6

      When they get like that, ask them to leave.

    • @alexandercanella4479
      @alexandercanella4479 4 роки тому +3

      No means no. These white maples dont know how to respect boundaries. Cut them all!

  • @wakawaka1976
    @wakawaka1976 4 роки тому +37

    It’s all for show. Deep down their roots are getting it on. “Lady in the streets but a freak in the bed.”

    • @alexv3357
      @alexv3357 4 роки тому +7

      Lady in the canopy but a freak in the soil

    • @asbestos_5036
      @asbestos_5036 4 роки тому +14

      The fact that you said bed instead of sheets pisses me off way more than you can even imagine

    • @emceeboogieboots1608
      @emceeboogieboots1608 4 роки тому +1

      @@asbestos_5036 Yeah...I am gonna make like a tree and get the hell outta here!

    • @jimkid1392
      @jimkid1392 4 роки тому

      @@asbestos_5036 agree

    • @wakawaka1976
      @wakawaka1976 4 роки тому +1

      Asbestos_ don’t like Usher’s song, “Yeah”?
      “We want a lady in the street but a freak in the bed”

  • @leonidas0242
    @leonidas0242 4 роки тому +42

    The trees are Canadian

  • @miloallerton
    @miloallerton 4 роки тому +2

    ‘The secret life of trees’ is a wonderful book and it goes into detail about this phenomenon.

  • @Qwertype315
    @Qwertype315 4 роки тому +46

    surprised theres no parasite hypothesis. same species trees can probably have a lot of parasites, wouldn't want to be in prolonged contact with one

    • @HighDeafRadio
      @HighDeafRadio 4 роки тому +4

      What are ye? A fuckin wize guy or somethin?

    • @Rouverius
      @Rouverius 4 роки тому +6

      Yeah, like the mycorrhizal network between trees?

    • @angieemm
      @angieemm 4 роки тому +11

      There are several of them. I'm in ecological restoration and we've done extensive research (including my university's specialized departments and published professors). We've also done the mycorrhizal and allelopathy. The results are pretty interesting - unfortunately many are published in journals that require exorbitant subscriptions - but I'm sure many are available on Google Scholar. In addition, professors all over academia are really cool and if you email them directly, they're usually more than happy to send you their papers for free, even if they were still published.

    • @Rouverius
      @Rouverius 4 роки тому +1

      @@angieemm Cool. Thanks!

  • @Zeytrixx
    @Zeytrixx 4 роки тому +59

    Fun tree fact:
    In 2017, There were approximately 3.04 TRILLION trees.

    • @dandanthedandan7558
      @dandanthedandan7558 4 роки тому +12

      And now we can add 20 million to that number

    • @Trailtracker
      @Trailtracker 4 роки тому +30

      And then we can subtract a lot

    • @doom-driveneap4569
      @doom-driveneap4569 4 роки тому

      Zeytrixx finish your sentence bro

    • @pauljerome01
      @pauljerome01 4 роки тому +15

      We can then minus the amazon and australia

    • @dhkatz_
      @dhkatz_ 4 роки тому +1

      @@dandanthedandan7558 We cut down tens of millions every day. That didn't make a difference

  • @EliStettner
    @EliStettner 4 роки тому +55

    Nobody:
    Tree McHammer: YOU CAN"T TOUCH THIS.

    • @nategrimm8998
      @nategrimm8998 4 роки тому +10

      Should have said “M. Tree Hammer.” Wicked missed opportunity.

    • @kregadeth5562
      @kregadeth5562 4 роки тому

      Eli Stettner Stop the meme ✋ 🛑

  • @averyjenson
    @averyjenson 4 роки тому

    Man this past week has just been Hank. Making him work.

  • @AuntieHauntieGames
    @AuntieHauntieGames 4 роки тому

    I love tree and plant episodes.
    I believe the 'friction between touching branches' theory the most. A few cottonwoods out by a local lake grow horizontally from the shoreline over the water and there is an almost perfectly horizontal border zone between their lower foliage and the water surface. Probably caused by fishes and agitation during high water days.
    But trees are incredible and, understanding the complexity their hormone systems can actually achieve, it would not surprise me at all to learn that they have some means of signalling to one another or something.
    Either way, it is bound to be a useful mechanism for lessening the sharing of certain fungal and bacterial infections that afflict leaves.

  • @negative.infinity
    @negative.infinity 4 роки тому +1

    In my town there are these two huge old trees growing right next to each other in a field with nothing else around them. The two trees don't touch, but being so close together, they both have grown into the shape of what looks like two halves of one even larger tree. 🌳

  • @bjornsan
    @bjornsan 4 роки тому +1

    Heard about this years ago. Saw it near Meiji temple in Japan and should have pictures of it somewhere. Looks pretty cool.

  • @dtxas1
    @dtxas1 4 роки тому

    As a Forestry student, learned some things about this stuff. When it comes to gaps, between branches, we think of it as the trees sensing their surrounding and diffrent species have diffrent range on critical point- when trees receive shock. If the other species are foreign it will cause a jump in growth for up to 5 years and slower than normal growth for 10+ years afterwards, when it's the same species, the shock is greater and both individuals slow down thier growth. The critical point is diffrent for all species, it can vary from a centimeter to almost a foot which would be pinus silvestris. This is why its better to add in a mix of other tree species to reduce this shock and boost forest resistances to diseases. In forest, all roots are usually intertwined and they do help their young and poision other spiecies, like video says. It's best seen on populus tremula, since it can multiply by roots, those might be more advanced. The poisioning isn't much, it is used to slow down others growth by a bit, but it helps young to outgrow the competitors.
    I'm not that good with english forestry terms so it might have sounded vague, i base this on Lithuanian forestry standarts as it is where i study for 3 years already.

  • @carboxysome2630
    @carboxysome2630 4 роки тому +6

    There's actually a research I forgot the name, in which genetically related arabidopsis plants planted (too) close to each other move their leaves away from each other in order to let everyone get enough light, if these trees are genetically related this behavior makes perfect sense, just like animals show more alturistic behavior towards more genetically related individuals

  • @Rouverius
    @Rouverius 4 роки тому +20

    My theory is that sometimes when they touch, the honesty's too much.
    🎵 And they have to close their eyes / And hide... 😁

  • @phile5437
    @phile5437 4 роки тому +6

    🎶There's unrest in the forest🎶
    🎶There's trouble with the trees🎶
    R.I.P. Neal Peart

  • @sobertillnoon
    @sobertillnoon 4 роки тому +14

    Is it just me or do the patterns in the canopy kinda resemble the structures within leaves themselves? (Ya know, the plant veins. It's a weird word that starts with an x and gas too few vowels )

  • @camusdelfin5505
    @camusdelfin5505 4 роки тому +37

    2 trees chillin in the forest 5 feet away coz they’re not...

  • @LaurenElizabethYT
    @LaurenElizabethYT 4 роки тому

    What a cute name to call this phenomenon! Awwe, the cute shy little trees☺️🌳

  • @jfikri1
    @jfikri1 4 роки тому

    Simple explanation, the respect each other

  • @PamdaDev
    @PamdaDev 4 роки тому +3

    SO much Hank these past few days.

  • @rosscotheredroo1070
    @rosscotheredroo1070 4 роки тому +1

    Another possible reason is that the trees are all communicating with each other though the fungal network they all share, Being the same species and the same age they have deliberately grown in a way that they are not competing with each other for sunlight or space, reducing the risk of causing damage to each other.

  • @Realmediamashup
    @Realmediamashup 4 роки тому +7

    I thought I was the only one to notice that some trees didn’t touch each other. The cool thing is the trees that do this do not just randomly grow any which way but must on some level make a “conscious” decision which way their branches grow. There can be five or more what I call oak trees right next to each other and their multiple independent canopies cooperate with each other and make one big canopy like they’re all one tree and not one branch or leaf from different trees will touch.

    • @icollectstories5702
      @icollectstories5702 4 роки тому +1

      I am wondering about the use of the word "conscious." The fascinating angle to me is the trees differentiating between "me" and "not-me" in regards to shading and growth. That's at least a sense of identity.😁

    • @Realmediamashup
      @Realmediamashup 4 роки тому

      I just mean that by some means it identifies there is a tree there and adjust its trajectory because of it. It is not a blind sprint for light or area. It conceded that real estate instead of fighting for it. It does seem only to do it with the same type of trees. It’s like making room for your cousin at the dinner table.

    • @icollectstories5702
      @icollectstories5702 4 роки тому

      @@Realmediamashup I just found the thought poetic. But I never cede space at the dinner table to a relative - it's survival of the fattest!

  • @k.r.99
    @k.r.99 2 роки тому +1

    These trees have mastered social distancing.

  • @Khether0001
    @Khether0001 4 роки тому +50

    *it is the heebiejeebies...!*
    since they can't see, they must feel the same thing when a fish touches your leg!

  • @angelina6543
    @angelina6543 4 роки тому

    Trees are communicating, they have a loving soul.

  • @CanadianCuttingEdge
    @CanadianCuttingEdge 4 роки тому

    In the pictures, in this video, it clearly shows this shyness within a given tree. Take a look at the major branches of the tree and notice that at the crown of each major section there is an open area there too. So the answer must include something that has nothing to do with the neighbouring trees as it happens within a given tree too.

  • @snelly69
    @snelly69 4 роки тому

    Love the jacket, looks sharp

  • @antnfs
    @antnfs 4 роки тому

    Had the Eastenders’ theme pop into my head looking at that thumbnail. Wild.

  • @MarinusMakesStuff
    @MarinusMakesStuff 4 роки тому +1

    Very interesting, I've been photographing trees in a park near my house because they had the same phenomenon.

  • @happilyham6769
    @happilyham6769 4 роки тому

    I love your jacket in this video.

  • @burgersnchips
    @burgersnchips 4 роки тому +14

    Everyone: remarkable breakthrough new T-Cell cancer treatment
    Sci Show: these trees don't like to touch each other

    • @Calliopa_22
      @Calliopa_22 4 роки тому +1

      burgersnchips Can I please have a link to a vid or article about this. I think my grandfather was involved in this. He went through a new treatment where they modified his T cells. He was the first person to survive the treatment in Brussels.

    • @burgersnchips
      @burgersnchips 4 роки тому +1

      @@Calliopa_22
      www.bbc.co.uk/news/health-51182451

    • @Calliopa_22
      @Calliopa_22 4 роки тому +1

      burgersnchips
      Not the treatment my grandfather was on (no human trials yet) but still very promising. Thanks

    • @burgersnchips
      @burgersnchips 4 роки тому

      @@Calliopa_22
      I expect your grandfather received the older personalised version which was mentioned in the article where they take some blood, filter out the t-cells and replicate them for that specific cancer.
      I hope he's OK and doing well!

  • @aaron4ism
    @aaron4ism 4 роки тому +13

    Tree: "hey imma need about tree feet"
    Other trees: "why we gotta Treet each other this way?"
    Tree: "why yall treet me like a stranger bro... It's been this way"
    Other trees: "All tree of y'all, y'all done or you finished? I'm tryna photosynthesize"
    Wind: I'm going to end their whole career bruh

    • @D8W2P4
      @D8W2P4 4 роки тому +1

      >hey imma need about tree feet
      Well it was about that time I noticed this tree was about 8 stories tall and was a crustacean from the Paleozoic era.

  • @JimFortune
    @JimFortune 4 роки тому +4

    Might it have something to do with disease transmission? I hear when Henry Ford tried to grow his own rubber trees, they were planted close enough to touch, and when one tree got sick, they all did.

  • @phantomfugu5726
    @phantomfugu5726 3 роки тому +1

    Queen Elizabeth has no "crown shyness" problem.

  • @oliviagreen8853
    @oliviagreen8853 4 роки тому +1

    I can relate to the trees, wants to be around others but DO NOT TOUCH my invisible bubble. That’s a no no.

  • @corro202
    @corro202 4 роки тому

    Great video.

  • @BlackTomorrowMusic
    @BlackTomorrowMusic 4 роки тому +3

    I'm not touching you! I'm not touching you!

  • @reesew71
    @reesew71 4 роки тому +55

    Tree said "No homo bro"

    • @ExtremeMadnessX
      @ExtremeMadnessX 4 роки тому

      Trees are hermaphrodites...

    • @cobalt1754
      @cobalt1754 4 роки тому +2

      @@ExtremeMadnessX Most of them are, except for cedar, ash, mulberry, yew, and others.

  • @Nhoj31neirbo47
    @Nhoj31neirbo47 4 роки тому

    Another reason to love trees. 🌲 🌳

  • @crocowithaglocko5876
    @crocowithaglocko5876 4 роки тому +28

    Simple
    Those trees are introverts

  • @liselottewillems8663
    @liselottewillems8663 8 місяців тому

    get well soon!

  • @tickytacky8078
    @tickytacky8078 4 роки тому

    Lisa: Stop touching me, stop touching me, stop touching me
    Bart: Lisa's breathing!!!

  • @CarthagoMike
    @CarthagoMike 4 роки тому +1

    They respect one another's comfort zone, unlike humans.

  • @Deckzwabber
    @Deckzwabber 4 роки тому

    Many forests are much more social than we usually give them credit for. Trees even maintain family bonds. These trees of the same species and height are probably relatives, stemming from seeds off of the same mother. It makes sense to evolve a system that prevents one falling tree from taking it's siblings with it, even if it means each individual ends up being just a little bit smaller.

  • @BamfIamone
    @BamfIamone 4 роки тому

    It's been all Hank this week Kreygasm

  • @shotforshot5983
    @shotforshot5983 4 роки тому

    Hank Green is your best presenter...

  • @wonderwend1
    @wonderwend1 4 роки тому

    Hank..... the only guy who can make a brown wool jacket look cool

  • @geezzzwdf
    @geezzzwdf 2 роки тому

    I like the theory that presents the groove of trees shared their needs collectively by using chemical signals in their shared biom,
    And in some species
    Have a more familial relationship
    With the older more well establu a.c had trees act as the Mother giving aid to the younger trees.
    And as a side note
    The plants you care for do since you . An
    Instructer I had in high school showed by using a common analog electrical tester. 1 probe in the soil closest to the main stalk the other connected to a mid branch end.
    Play different music
    Watch the meter move. It is amazing

  • @gamedifficulty190
    @gamedifficulty190 4 роки тому

    these trees do understand personal boundaries unlike people I know

    • @stewartjohn8130
      @stewartjohn8130 3 роки тому

      they thought they looked like giraffe patterns.🤍🥰🤍

  • @EduardQualls
    @EduardQualls 4 роки тому

    "contact dendrititis": Don't touch my crown; it itches.

  • @Master_Therion
    @Master_Therion 4 роки тому +32

    So, if a branch gets too close to its neighbor it... leaves?

    • @mtlicq
      @mtlicq 4 роки тому +4

      ooooooohhhhhhhhhhhhhhhhhhhhhhh!!!!!!!

    • @Rouverius
      @Rouverius 4 роки тому +1

      shoot...

    • @lyndsaybrown8471
      @lyndsaybrown8471 4 роки тому +2

      Yes, so they can be best buds

    • @oldschoolman1444
      @oldschoolman1444 4 роки тому +1

      Good one, sounds like something I'd say. =)

  • @wimwiddershins
    @wimwiddershins 4 роки тому

    It seems the gaps also exist between major branches of a single tree. So the cute idea that individual trees are being shy or polite is, dubious. More likely we're noticing the result of physical wear and tear than some "spooky" communication between trees.

  • @blacktimhoward4322
    @blacktimhoward4322 4 роки тому

    A lot of the brothers in my frat had crown shyness too but you get over it

  • @TheFallingFlamingo
    @TheFallingFlamingo 4 роки тому +1

    Can you guys do a video on just how dangerous it is to shower during a thunderstorm? It just seems so impractical, and unbelievable, that there's not some kind of insulator surrounding water lines inside a house and that any current would consistently make the jump from small water droplets instead of discharging through the water nozzle to ground. It also seems unbelievable that it would travel along the fiberglass material most tubs are made of nowadays, as it's a very effective insulator.
    A bath I could understand, but a shower? Just doesn't make any sense to me.

  • @bobbyharper8710
    @bobbyharper8710 4 роки тому

    I noticed after hurricanes there's a huge growth of underbrush which slowly subsides over the years as trees regain their former canopy density. The same is probably true with trees being shaded out.

  • @WSUGLUE
    @WSUGLUE 4 роки тому

    It would be nice to see a video about Poland’s Crooked Forest 🧐

  • @camronreynosa4958
    @camronreynosa4958 4 роки тому +2

    Never noticed this in fact ive taken notice that trees intertwine when too close.
    Edit: nvm that as you guys are talking about specific trees

  • @thshm2938
    @thshm2938 3 місяці тому

    I don't think the trees in my village are not that polite to each other 😂😂

  • @kori8266
    @kori8266 4 роки тому

    we want sicshowkids back

  • @Dfender67
    @Dfender67 3 роки тому

    Call it Considerate Crowning as they give a little space so their babies can get some light too!🌱

  • @tomfieselmann5906
    @tomfieselmann5906 4 роки тому

    German research a decade+ago mentioned a small electrical discharge between neighboring trees causing the space between crowns. Sort of a communication method...

  • @Nyambui
    @Nyambui 4 роки тому

    This comment section taught me how much I like tree jokes.

  • @ClevendSteamer
    @ClevendSteamer 4 роки тому

    Not related but....
    Can you all make a video about starch extraction and processing methods from various plants and starches different uses? I was reading up on it today and wondered if you all had a video about just starch, but then could not find one from you all.

  • @The_sinner_Jim_Whitney
    @The_sinner_Jim_Whitney 4 роки тому

    I believe it's due to mechanical breakage due to wind and such, along with trees of the same species chemically 'communicating' (for lack of a better term, to avoid more of said mechanical breakage than necessary. It's been proven that plants of the same species (and in some cases similar species) can influence one another's growth and behavior in the same area based on the conditions around them, to compensate for drought, parasites, fire, and other such forest conditions. Pretty cool stuff.
    I've been in forests that exhibited this 'crown shyness', it's pretty weird to be there but you just can't put your finger on why it's weird until you look straight up and see what's different. I've noticed it most often in forests that livestock (cattle and horses from my experience, probably others) populate relatively heavily. I don't know if that has more to do with the presence of livestock (and its manure/urine) itself, the lack of dense undergrowth due to livestock eating most of it, neither, or both. Pretty interesting.

    • @celinak5062
      @celinak5062 4 роки тому

      Lack of undergrowth, hope it isn't just a sign of grassification

    • @The_sinner_Jim_Whitney
      @The_sinner_Jim_Whitney 4 роки тому

      Celina K No, these are healthy, mature hardwood forests that get PLENTY of rain and all 4 seasons. I'm in West Virginia, and the majority of my time spent in the woods has been in WV, OH, KY, PA, TN, and NC. We don't have to worry about that (yet). Cattle and horses just graze on most of the undergrowth as far as I've ever been able to gather, at least anywhere near trails or water.

  • @rjgonzalez9220
    @rjgonzalez9220 4 роки тому

    Imagine that a tree that have more respect than some people I know.

  • @wakawaka1976
    @wakawaka1976 4 роки тому +1

    Plant life is smarter than we think... smarter like a jellyfish.

  • @over7532
    @over7532 4 роки тому +2

    Leaf it to scishow to branch out to the root of the answers

    • @adnanw1367
      @adnanw1367 4 роки тому +1

      - Greenit - I was reading that in a book about anti gravity , it’s impossible to put down

  • @paulgar8
    @paulgar8 4 роки тому

    Quick Questions: I am fascinated by rocket launches.
    1. Aside from the possibility of tons of rocket and rocket fuel falling on you, how close could you stand to a rocket launch?
    2. What is the DB level at the pad during liftoff?

  • @messyjetski2549
    @messyjetski2549 4 роки тому

    maybe it helps protect against diseases or parasites that are transferred via leaf to leaf contact. or it could be related to maximizing light/leaf. or maybe they've just known their neighbors long enough to know they'd rather not...

  • @outdoorsy01
    @outdoorsy01 4 роки тому

    I call it movement sensitivity.. the tree can sense where potentially damaging movement will occur. Obvious example is alongside a path or next to a road. You wont find the edges all smashed and broken.. they even make a nice little HGV pattern or a wing mirror pattern. All of these shapes have not been broken over time to remain this way. Most branches and leaves simply wont extend into danger. Simple

  • @AngryDuck79
    @AngryDuck79 4 роки тому

    Instead of "crown shyness" I keep hearing "crownshine" and I like that way better.

  • @CasandraKrammerDesign
    @CasandraKrammerDesign 4 роки тому +8

    It’s all about the respect bro! ✊

  • @RedForeman
    @RedForeman 4 роки тому

    "I'm not touching you"
    Says my little brother before I throw him across the room.

  • @jorenzlorenz
    @jorenzlorenz 4 роки тому

    Trees know personal space.

  • @gunners6034
    @gunners6034 4 роки тому

    The pictures shows that there are gaps between bigger branches of the same tree so mechanical damage factor should be the explanation.

  • @AlabasterJazz
    @AlabasterJazz 4 роки тому

    Not to be confused with "crowning" shyness, which is when an infant about to be born sees all the people in the delivery room, decides to be introverted, and refuses to leave the womb

  • @alexr5118
    @alexr5118 4 роки тому

    This says a lot about our society 😳😔

  • @ash-oholic
    @ash-oholic 4 роки тому +106

    It's because of the "no homo" tree code everyone signed when they joined the fraternity

  • @TheJamesRedwood
    @TheJamesRedwood 4 роки тому

    What about root contact? Have they looked for allele activity down there? If the roots touch underground this may send a signal to inhibit crown width.
    Or perhaps it's mycorrhizal fungi particular to those trees providing the allelopathic triggers that manifest in the crown.

  • @_AVF
    @_AVF 3 роки тому

    What about maybe a Mycorrhizal network?
    The trees communicating with each other through the fungus beneath them.

  • @rabokarabekian409
    @rabokarabekian409 4 роки тому

    Another related mystery, check out how shrubs rarely touch their own branches and twigs or those of others either. Evolution or some sort of sensory reaction? I gots no idee, personally.

  • @1KingJacob
    @1KingJacob 4 роки тому +1

    Maybe the roots communicate?

  • @Hansulf
    @Hansulf 4 роки тому

    The two things that came to my mind When reading the title were the 2 first explanation. What I call autospoiler...

  • @davidsi5376
    @davidsi5376 4 роки тому +1

    What about: leaf eating bugs (caterpillars) are prevented from crossing freely from tree to tree when trees avoid touching (by some mechanism).

  • @3Ppaatt
    @3Ppaatt 4 роки тому

    "The trees tower over me" I said understandingly.

  • @nun-yahbidness2767
    @nun-yahbidness2767 4 роки тому

    SciShow: Why do these trees refuse to touch?
    SciShow: We don’t know.

  • @MtnTow
    @MtnTow 4 роки тому

    In the first 3 secs id say to allow nutrient flow. Like a walless vein.

  • @arnaldorentes5371
    @arnaldorentes5371 4 роки тому

    It seems to me that in forest communities the smallest differences are explored in the competition between individuals. Demand for light, shape, capacity and speed of growth are always different between species, even if only a little. But in a group where everyone is identical, having reached the maximum size for their species in that location and environmental conditions, growing more would be a waste of resources. I think that's it.

  • @Bc232klm
    @Bc232klm 4 роки тому +1

    Did you make this after seeing that Reddit post...?

  • @zw5509
    @zw5509 4 роки тому +3

    Black walnut shows allelopathy around existing trees. Trees are engineering marvels.

  • @klausgartenstiel4586
    @klausgartenstiel4586 4 роки тому

    i think i'll go for number two.
    yeah,

  • @Eneov
    @Eneov 4 роки тому

    Crown shyness sounds like something a court jester would have when performing for royalty

  • @KingSkrap
    @KingSkrap Рік тому

    If no one else is gonna say it, I will.
    This would be an epic spot to trip on shrooms