Introduction to Dendrochronology

Now that we've gone over all the basics in our study of botany, it's time to start digging into some more advanced topics. First we will examine the field of dendrochronology over five tutorials. This is the study of trees over time, and as such, it is the study of tree rings. These are rings that are visible in the wood within a tree due to annual cycles of growth. The study of these rings has far more wide-reaching application than one would initially imagine, so let's get right into introducing this fascinating topic now!
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[@reallifepsych3309]

Here for every Professor Dave video!

[@azadprasad856]

The jingle at the starting still feels so soothing.

[@deadbzeus]

I was thrown off by no "Hey Professor Dave here, let's talk about dendrochronology" before the intro. Thank you so much for all your hard work and great videos!

[@StaticBlaster]

Love this channel. You can learn everything pretty much. Biology, finance, accounting, math, etc...

[@glennpearson9348]

Excellent! I learned so much from my grandfather, who was a soil scientist and conservation scientist with the Soil Conservation Service (back before it became the NRCS). Really looking forward to Professor Dave's deep dive into the fascinating topic of dendrochronology and adding to my knowledge of this topic.

[@PatrickFestaPatman]

I thought I was just going to take a quick look at this video, but found myself watching the whole thing. Shared in my 'science' playlist.

[@MossyMozart]

Ditto.

[@NitiKatyayana]

WOW. Really insightful explanation in such a simple manner. Huge thanks.

[@DirtCobaine]

I always have these random thoughts throughout the day which often lead to me wondering about something specific yet random and I absolutely love it when I look it up and I find a fairly recent upload on the very topic of my questions! It seems as though there’s a group of people out there who think relatively the same as I and roughly at the same time lol synchronicity at it’s finest

[@Daisy-cz1tv]

He knows all about the science stuff, professor Dave explains. Is that right?? i sing this all day. wanna know if it's right? I really respect Professor Dave and love him. I have learnt math, chemistry and now learning physics and astronomy. Thank you sir!🙏🏼

[@ProfessorDaveExplains]

Close! "He knows a lot about the science stuff."

[@Daisy-cz1tv]

@@ProfessorDaveExplains Hahaha, thank you sir !

[@GapWim]

3:22 _”Trees are like books”_ They’re both made of wood. … I’ll see myself out now.

[@danbeck6741]

What do a nuclear reactor and volcanic eruptions have to do with dendro? A very exciting field indeed. Neutron Activation Analysis (NAA) of tree rings dates the rings based upon content absorbed worldwide from eruptions. Looking forward to seeing the rest of your series on dendro!

[@RailfannerAviation]

Great job Prof. Dave!

[@altayebofficial]

Very excited for that great work Keep going 💙

[@malms4026]

Imagen getting all the information from all of Daves videos into your head. Mmmmmh, Nice

[@The8BitPianist]

Treerings are much more interesting than I'd thought!

[@safazalreshi5593]

Love for prof. Dave from Kashmir A big fan

[@SolanaBoschilia]

It would be nice to point the difference in growth and consequently the rings of trees in temperate and tropical regions.

[@ProfessorDaveExplains]

It's all coming, it's a five part series.

[@CaptWesStarwind]

Another great one. Also really enjoying all the new subjects you are covering now.

[@Mark-Wilson]

i learn so much from your videos

[@robertschlesinger1342]

Very interesting and worthwhile video.

[@khyrunnaharzoma2626]

your geography-related videos are so helpful thanks a lot

[@fuzzypix1]

I'm curious, but since you have done some series on botany, will there ever be a series on zoology?

[@ProfessorDaveExplains]

Yes there will be a massive zoology playlist! It's being written right now.

[@fuzzypix1]

@@ProfessorDaveExplains YES!! I can't wait

[@slurky3992]

@@ProfessorDaveExplains Lets freaking gooooooo!!!! Love the content prof

[@Anthony-ct3cv]

Yo I noticed you respond to comments so i'll try my luck I'm new to the climate science field (very excited for my research) and absolutely love watching your systematic debunking videos like the ones where you drag kent hovind through the mud or demolish that one nut decrying abiogenesis, so I was thinking of combining my two favorite things in the world Any chance you make a similar debunking video on climate change deniers? That would be spectacular

[@ProfessorDaveExplains]

So I'm planning extensive content on ecology and environmental science, so tons of climate related tutorials will be in there, maybe I'll cap it off with a video debunking climate denial! But it's gonna be a little while.

[@shahabbaloch8338]

Makes me love science.

[@slurky3992]

I’m actually really interested in this topic and yet today is my first day even knowing about the topic

[@sidharthsingh7515]

Prof Dave. I like to look into far out theories as a hobby. I've recently happened upon a new-ish theory that states that during the beginning of megafauna period, there were equally giant trees which were petrified due to the icy conditions post glaciation. Now people have been stating that the Devil's Tower is the 'stump' of such a tree. There are a couple of hypotheses that I want to test regarding this; a) If athroprods, during changing levels of oxygen, exhibit a maximum growth level due to inhibition regarding the structural strength of chitin - then, similarly in changing CO2 events; do cuticle containing plants have a maximum load bearing capacity with respect to the overall structure of the tree/plant? b) If these megaflora are similar to present day trees, do the petrified remains exhibit the same dendrochronology we find in modern stump patterns? c) Some claim that these petrified trees have centralized hydrocarbon complexes some of which contain amber like preservation of cells/microbiology and some small insects, if an intact cell is found, shouldn't we be able to PCR some of the endospore genetics for a clearer picture? What are your thoughts? Have you heard of this theory before?

[@williamchamberlain2263]

The Devil's Tower thing is a conspiracy theory out of the Flat Earth community; I think it started with the video ‘No Forests on Flat Earth’ which someone decided to make as an argument for a world cover-up of ... something.

[@BermyNick]

Great video, but I always wondered how they came up with this method of dating trees and the experiments they have done to check and see if it’s accurate

[@ProfessorDaveExplains]

Stay tuned!

[@maxnovakovics2568]

The roots are equal to the canopy

[@arunavadaschakraborty2177]

I want to show the photo copy a cross section of an old tree that has been cut off recently. Is there no way to show this in comment?

[@thickFruitJuice]

Can more than one ring be generated per year?

[@DirtCobaine]

Does dendrochronology specifically have to do with the specific tree ring technique or can it encompass the study of dating trees as a whole? For example radiocarbon dating a tree, or dating a tree without cutting it down. Or hell, even studying about how trees age?

[@Jordan-vr7ip]

Yes it’s only tree rings. You don’t have to cut the tree down they small holes through them.

[@carultch]

Do tropical trees also have ring patterns that enable you to count the rings for the age of the trees? Tropical trees don't go through winter/summer cycles the same way that temperate climate trees do, due to the season being a lot less extreme in a tropical location. Are the rings of tropical trees, just not as obvious? What if you grow a tropical tree species in a temperate environment, or vice versa? Would you get a different ring pattern than the same tree species in its native environment.

[@viihuman4416]

Hey carl, tree rings isn't a one time a year deal and shouldn't be the go to for age of any tree. everytime there's a dry spell it'll harden to preserve itself creating a ring. if there's no dry spell or infestation or other events that would harm the tree it won't get a ring.

[@kaushalj9]

I always listen the intro aleast Twice...!!❤

[@Jveir]

Same 😂😂😂😂😂

[@redwanmohammed9730]

how i can download the video

[@raulpadilla88]

Amazing info!! Great video!! It would be awesome if you could make a video about Sclerochronology using massive corals and compare both organisms and the environmental information that they provide!! 👍🏽👍🏽👍🏽👍🏽

[@lucasaquino-petkos4086]

Hey professor Dave, how do you learn about these topics before making a video?

[@prammar1951]

You will continue economics right?

[@ProfessorDaveExplains]

Yep it'll be a long series.

[@prammar1951]

@@ProfessorDaveExplains Thanks. Good luck

[@sewanlimbu3301]

Love a lot professor😊😊

[@nikolatesla1242]

Hello dave, I am just curious will there be electronics series?

[@ProfessorDaveExplains]

I do hope to extend my classical physics playlist with more in depth E&M content, yes!

[@nikolatesla1242]

@@ProfessorDaveExplains Cool! I Will be waiting with great excitement.

[@Timidjango9]

So...they’re basically natural data centers?

[@fatimarizvi9138]

Hello Sir. Can you make a video on Atomic Emission Spectroscopy?

[@StatedClearly]

Noice!

[@Xarai]

nice*

[@ashishlulla974]

@@Xarai noice*

[@BigBaibars]

@@Xarai noice*

[@thomasmacpherson8041]

Intro was great! Everything else...

[@AkeynoPSKG]

Are you a real professor? I love you content btw

[@sydneyhunt6681]

I wonder if trees will pick up on the volcano going off now in the Caribbean

[@rickkwitkoski1976]

Yes, the ones living close by will incorporate something into their trunks and we will be able to attribute it to the current volcanic eruption.

[@pakistanworldnews183]

very informative keep it up

[@backstreetfan2887]

This is cool stuff

[@oddviews]

" I never count the hours I spend in the company of trees". Ralph Waldo Emerson.

[@dermontbud2798]

Chris Crutchley Great sentence!! 👏 👏 👏 👏 👏 👏

[@Valerio_the_wandering_sprite]

Here's a stupid question: how did we figure out one ring represents exactly one year (= 365 days)?

[@drmantistoboggan2870]

I think its because the seasons make the rings darker and lighter alternatively so if there's a dark ring next to a light ring, its been through all 4 seasons which takes a year. Something like that anyway

[@viihuman4416]

Its not a stupid question, and it doesn't represent a year accurately. there assuming it has one ring a year because it went through a winter but winter alone isn't the only variable in the rings like the video stated afterwards it also shows events that transpired. Dating trees is erroneous and isn't considered credible. things that may make a tree ring besides winter maybe droughts or dry spells, possible bug infestations or fires etc.

[@loksopi6869]

talking about plants, what is your opinion on veganism

[@ProfessorDaveExplains]

I think it's a perfectly fine and ethical lifestyle choice, however I am not vegan.

[@GuitarUniverse2013]

I thought it was the science of climatology, and the history there of; and that the tree rings aren't the science, but rather the non-digital assets used to show us how trees grew, where they moved to, and how they disappeared over time.

[@MisterItchy]

"So, without further delay, let's learn about dendrochronology!" ... video ends. Should be quite informative!

[@ProfessorDaveExplains]

It's a 5 part series.

[@AshaqHussainParry]

Thanks sir

[@viihuman4416]

everything mentioned is good and right except for time, tree rings don't represent time but events. it does't say "Oh its my birthday im gonna get a ring" When theres a dry spell it'll grow a ring when its winter it'll grow a ring when almost any event that distresses a tree occurs it'll harden to preserve itself and the water in a tree (thus creating a ring). There's a Plethora of Findings that find tree's can grow many rings a single year or none at all. its also the same for ice cores. its a bad science in general and only can validate its findings with other findings thats known to have happened and is recorded to have happened.

[@ProfessorDaveExplains]

Of course it represents time. Each ring is a year. Years are a unit of time. I go over anomalies in this series as well. it is not "bad science". Scientists know what they're doing.

[@oddviews]

It is a shame that humanity seems not to be aware that without trees, it will have a problem breathing!

[@MossyMozart]

Oxygen is one of the many things I like about trees!

[@gggeming3750]

Dendro + Pyro = Burn Reaction

[@jmckinstry3220]

some trees stop growing rings when it becomes too cold (I assume we will see it later)

[@paltryannabel]

I came here for an amazing band named eidola.

[@antimatter31]

“ Can a dog come from a Protista? “ - Kent Hovind 😂

[@rickkwitkoski1976]

No. But obviously a sub-human can, Kent!

[@michaelstahl1108]

dendrochronology is amazing, but it has one negative aspect, the scientist always has to kill the tree...

[@ProfessorDaveExplains]

No, they don't kill trees. They take tiny samples.

[@michaelstahl1108]

@@ProfessorDaveExplains oh you mean they don't slice it up, oh here i see your other video, sorry didn't see that...must pay more attention, i am a tree worker in Germany and i know that healthy trees can compensate such minor damage like drilling small holes to the core of the tree...let me just watch the other clip...thanks for replying

[@BiswajitPurkayastha-g2n]

Invention of Vita-Wonk

[@slicedofficial]

Here

[@knewit]

Wts with the intro😂

[@jax1296]

Animals > trees. Common zoology I’m tired of waiting!

[@ProfessorDaveExplains]

Zoology is being written as we speak!

[@jax1296]

@@ProfessorDaveExplains Wooo!

[@AALexamRegulur]

2024 ME kon dekh raha hai to subscribe

[@csikosghost4302]

Tree moment

[@soracandles1979]

First!

[@Soooooooooooonicable]

"Trees are like books" They actually are though 💀

[@SaeedurRahman-gk4ow]

This is a useless knowledge

[@ProfessorDaveExplains]

You could say that about practically anything.

[@amram1305]

You mean there's even haters in dendrochronology......