Thanks. Just what I have been searching for since 3 hours now.

This was very informational, so thank you for that!

I just pulled a cedar root driftwood out of a swamp and would love to do this to see how old it is! Thanks!

Nice! I have the same borer and I am using dendrochronology in earth science at University of Michigan-Dearborn. I needed to know how to use my tool lol I have also heard Arby's straws are wide enough. Now I need to learn how to properly clean it in the field to take multiple samples. Thank you!

@blueschiz

Жыл бұрын

90% alcohol in a spray bottle is a quick way to clean it

Thank you

Hello! Great vid! Thanks for posting. I am trying to get some good images of core samples. Do you have any images that you would be willing to share with me?

thanks for the cool vid!

When you say to clean the borer, what should one clean it with to make sure you do not spread disease between trees?

@lacigerhart1473

4 жыл бұрын

We used 95% ethanol

Thanks

Very interesting, Thank you! Q? is tree coring only taught in dendrology or silva culture courses? I did a two term w/field study plant field ecology course and we were't taught this. Though we had to do a pretty intense transect study.

@meyou9655

2 жыл бұрын

Hello. I took a 40 week silviculture class at the community college. We covered this as well as numerous other topics. There was a theory and then a practical part. Forest and map measurements, scaling, chainsaw production, map and compass, cruising, management plans, sensitive areas, survival, using a skidder and a porter to extract cut wood, set up pump units, covered insects and disease, the forestry act. The instructor was the same guy that taught that program since it's beginning. He was in his 60's, made his life with a chainsaw, was a licences scaler and a forest technician. I graduated in 2001.

@filmic1

2 жыл бұрын

@@meyou9655 Thanks for answering. Another Q? comment? if I may. I was a lead field tech for C + N isotope food chain studies in Lake Trout affected by clear cut logging. We used Acer saccharum leaf for our C base line in our GCIRMS. I'm not a scientist, but am now wondering if it would have been better to get our C isotope baseline samples from Acer cores... Interesting. There may have been a salient reason (photosynthesis) they wanted C from the leaves. We had to sample our leaf material from locations high and distant from the influence of any road traffic. This was the early nineties.

You can tell she’s done this before. She gets one revolution per turn, whereas most people get half that.

5° Degree Down Angle

Does this hurt the tree?

@anishkushwaha293

2 жыл бұрын

Not at all,tree can heal their damage

always carry a second borer and some WD40!

Now time to fill in the core hole with Wood Putty or some Tree Tar to seal the hole from wood borers, water, molds, mildews, fungus, and stopping any potential tree disease from killing the tree.

@garypaisley

3 жыл бұрын

True for hardwoods, but conifers do a better job of sealing by themselves according to ecolearninghive.org/sites/default/files/A%20Manual%20And%20Tutorial%20For%20The%20Proper%20Use%20Of%20An%20Increment%20Borer.pdf

Nice jog mam

Non-tree-ring-scientists want to know: Does this hurt the tree in a major way?

@bardocklives3275

2 жыл бұрын

Sorry if this is a necro of your question, but if the tree is large enough and not sick/rotting, it'll treat the coring like a bug intrusion or other wound and "shore up" the hole by just growing new layers of wood over it (or filling with resin, etc). It's also possible for you to fill the hole on your own with specially made-epoxy or "tree putty". It's not in any danger of dying or being badly hurt so long as it's healthy and not super young! Usually in dendrochronology you want to get a tree that has more than 20 rings (to do date-matching with other trees) so you'll want to be taking a sample from a tree old enough to be cored without risk of dying, anyway. Good question!

MMMM!

DAMN!!! Hagloff sure is proud of its tools!!! Over $300 on Amazon for that thing?! How many of those things have the taxpayers paid for anyway? It's like selling the USAF a hammer for $800!!! I'll just cut the tree down!

Hmm, perhaps may have been more informative to have shown the correct method by cleaning all equipment before actually coring the tree. Maybe even better to have done the actual coring on a chuck of a fallen tree, not a live tree that you could be introducing (non-sterile borer) pathogens into the tree.

Dendrochronology and dendroclimatology are 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.

@TerraDawg2

3 жыл бұрын

Hello sir. I have a question. For clarification, in your second sentence you state Dendrochronology and dendroclimatology are "useless at determining temperature and climate." That being said.. are you also suggesting that tree rings cannot be reliably used as a measure of the AGE of the tree? Thank you

@rosaniseodell5369

3 жыл бұрын

Have you actually read any dendrochronology papers? Are you disputing hundreds if not thousands of peer-reviewed published papers that use dendrochronological methods? Looks like you're the expert, publishing in predatory journals...

@sundaydiver

2 жыл бұрын

This is like saying, "Biology is pseudoscience. There are big bunnies, and there are small bunnies, and there even are bunnies that are of medium size. It is impossible to study bunnies, because they're all over the place."

@sundaydiver

2 жыл бұрын

@@TerraDawg2 He's a climate change denier. No need to pay attention.

@sundaydiver

2 жыл бұрын

@Ralph Ellis: You obviously are a) unfamiliar with even the most basic aspects of tree-ring science, or b) deliberately misleading people. I'm a science writer, but not a tree-ring researcher, in other words, a lay person in that regard, and it took me all but five minutes of research to find out that the point you are trying to make in your comment is addressed by the most basic principles of tree-ring research. I quote: "Averaging tree-ring measurements from multiple individuals is one of the most common procedures in dendrochronology. It serves to filter out noise from individual differences between trees, such as competition, height, and micro-site effects, which ideally results in a site chronology sensitive to regional scale factors such as climate." Try harder, bud. Reference: Visualizing Individual Tree Differences in Tree-Ring Studies by Mario Trouiller et al., Forests 2018, 9, 216; doi:10.3390/f9040216