Spend a few minutes with Ron Herman looking at growth rings, pith and medullary rays to understand a bit about how trees grow, and what that can teach us as woodworkers. For the whole video, go to store.popularw...
How has this not got more views? This has changed how I look at trees now. It's crazy how we are surrounded by them but easily get overlooked. Really informative and well presented. Thanks!
I learned about medullary rays. That's cool because I might use it someday to consider the wood I choose. I've been learning all about foraging and survival such. It's powerful to know what can be used for what, or at least be able to figure it out. Medullary rays tells me a wood strong and durable. I can use pine for starting fires with its resin sap, dead Pinus strobus for fat wood, make tea with Hemlock needles, and get dry dead branches for firewood held off the ground at it's base. I can identify White and Red Oaks by their leaves and acorns Supposedly the acorns from the White Oak are not so bitter, can be cooked with less changes of water to make palatable. Haven tryed that myself yet.
seriously. Dude how can you be so intelligent about trees, so smart, and not think the viewer (& their kids), would've really wanted to know how "OLD" the tree from the sample stump was? Wow.
Hi, we really loved the video it’s very clearly explained and 1 graders enjoyed watching it over and over again. Where we can find the chart with the section showing the layers of the tree? Thank you 🙏🏻
I've heard those terms all my life but this is the first time I understood what they meant. Thanks. Question: If you grew a tree under artificial conditions so that it was in exactly the same environment throughout its life would tree rings completely disappear? I know some tropical trees almost don't have rings but what happens if you take a temperate zone tree and grow it so there are no seasonal changes in its environment?
If a tree is grown under constant temperatures like that there wouldn’t be any growth rings the inside would look similar to a palm tree or a tropical tree
First I really appreciate your expert analysis. Unfortunately when I tried to go to the actual website I get a bad response and will not get connected... Please fix this so we can watch the whole video.
How do trees grow? We already know about the rings. How do trees get taller if you make a mark in one spot and it remains in the same spot 20 years later yet the trunk is 40 feet taller?
via shoots, he has actually shown the pith of a side branch. that shoot has cambium (i guess) covering it at the tip and dividing cells in "upward" direction. that's why he also said that when you look at pith "count 3 years" because there isn't just sideways growth.
Hi! Is there any posibility that trees grow more than 1 ring per year? I mean, are there any conditions that affect trees for growing several rings per year or at least 2 rings per year? Thanks!
The very very interesting thing..barely touched upon, is the adaptivity of a tree..that it KNOWS that damage has occurred; or that it is out-of-balance; or that it is aware that attacks are happening and requires defensive actions....What form does this 'tree-consciousness' take and where does it lie within the tree's substance?
The water's surface tension allows it to be drawn up by capillary action. But even that has a height limit. I saw a video - I think it was DNews, maybe - that explained the other factor that takes over once the limit of capillary action has been reached. I sure wish I could recall what it was though.
Ha ha now I know how to count the age of a tree. Quick question though, can you count the age of a tree by using a branch or do you need the wood from the trunk to accurately count the age?
If the branch is 5 years, that's as far as you get counting its rings, you need the big boy to tell the age of the tree - that's why the down part of the tree has a larger diameter than the top part of that same tree, because it already experienced more secundary growth due to his age. At least, from my biology classes, I think that is the right answer :D
First European bark beetles vectored Dutch elm disease. Then emerald ash borer came along. Now humans themselves are the tree Killers vectoring too much suffocating organic matter over trees root systems that need to breathe.
Actually we're discovering open grown trees produce fatter growth rings because lower branches along trunk add to their girth. As compared to woodland trees whose lower growth gets shaded out as OneMain apical dominant trunk shoots tward open sky. So even Oaks which we consider slow-growing trees actually grow very fast over there first 45 years. As an urban dendrologist I've seen some of the craziest things in growth rings. As an arborist I am always summing up age rings, while normally my peers could care less how old tree they felled was. Only bragging about its height and size.
This was a great video. Thanks. I also found a playlist showing how to identify wood by looking at the end grain. ru-vid.com/group/PLMVjQeszKDAwAuEqT8GzG24F2k5D0AB3v
Dendrochronology is pseudo-science. Tree-rings are also determined by microclimates, pests, rainfall, disease, and canopy cover - they are useless at determining temperature and climate. In addition, a single tree can have dramatically different ring-thicknesses in one section of trunk. The left side may have thick rings in a certain decade, while the right side has thin rings. So if you core the tree from the left the climate was warm, and if you core it from the right the climate was cold. Same goes for dendrochronology. If tree-rings are highly variable in one tree, and stands of trees are effected by local conditions, then how can you compare a ship’s timber with a reference bog-oak in Ireland, or a bristlecone in America? As I say - it is all bogus pseudo-science. It’s a joke. See my recent paleoclimate paper: Modulation of Ice Ages by Dust and Albedo. Ralph.
