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Measuring multi-stemmed trees - Shared screen with speaker view
James Cook
26:41
Missoula, Montana
Alison Robinson
26:44
Amissville, VA
Jim Dymkowski
26:45
Austin tx
RAMASAMY ATHI RAMESH
26:46
Singapore
Mon Fung Su
26:49
Sue from Malaysia
Robert Belcher
26:51
Philadelphia PA
Jeff Dumas
26:53
Illinois
MUHAMMAD HAFIZ ZAINAL
27:00
Hello from Kuala Lumpur, Malaysia
Benjamin Erickson
27:03
Rochester, Minnesota
Daniel Kunkel
27:06
War Eagle!!!!
Mohammad Affisshan
27:08
hello from Singapore
Nicole Bracco
27:23
100 mile, BC
Jason Kruegel
27:25
Parker CO
Jennifer cormier
27:26
Edmonton Canada
TED KAPERA
27:27
TEDDY KAPERA, BIRMINGHAM, AL
Tony Forshage
27:31
Tony Forshage TX-4398A San Antonio, TX
Blake Thilmony
27:33
St. Paul, Minnesota!
Guillermo Lastra
27:33
hello every one from Alberta Edmonton
Michael Mckee
27:34
Puerto Rico in the house
Jamielyn Daugherty
27:41
Tavares, Florida
Pam Luders
27:44
grreetings from Spokane, WA
Ken Miller
27:46
Florida
Samantha Brown
27:58
Ontario, Canada
Ka Lok Wong
28:14
Hong Kong
Brian Henry
28:19
menlo park, california
Steve Schneider
28:25
Columbus, Ohio
Monika Otting
28:26
The recording of this webinar will be available on the TREE Fund website at https://treefund.org/webinar-archive
Alan Moore
28:32
Raleigh, NC
Susan Rowley
28:34
Chicago, IL
David Strootman
28:37
Minnesota!
Julia E Jones
28:41
Fremont, CA
Robert Murden
28:44
Chapel Hill, North Carolina
Mark Williams
28:54
Fort Lauderdale, Florida
Andrew Driscoll
29:00
Gaithersburg, MD
Donald Gunther
29:18
Greetings from Salem, Oregon
Paul Tibbets
29:30
Hello from Las Cruces, NM
Ellen Littrell
29:31
Springfield Missouri
Thomas Miles
29:33
Buckhall, VA
Michael
29:46
How do we submit for ISA Arborist CEU’s?
Rick Hoffman
29:55
Xenia, Ohio
Monika Otting
30:02
If you have not done so during registration and need to submit your ISA or SAF Certification #, send it to treefundwebinars@gmail.com
Meredith Seaver
30:08
Orem, UT
Melissa Sturdivant
30:11
Central Texas
tim dobson
30:19
Tim toronto hello
Monika Otting
30:23
The recording of this webinar will be available on the TREE Fund website at https://treefund.org/webinar-archive
Deb Reierson
30:40
Minneapolis, MN
Al De Reu
30:41
Chicago, IL
Monika Otting
31:10
Please submit your questions for the speakers in the Q&A
william price
31:14
Tallahassee
Jim Bell
32:00
Jim Bell is here
Lara Roman
33:02
Hi everyone! (And Jason and Tony!) Thanks for coming!
Derek Sproat
33:51
Derek Sproat City of Palo Alto
Monika Otting
33:52
Please support TREE Fund research and these webinars by making a tax-deductible donation at https://app.etapestry.com/onlineforms/TREEFund/donationform.html
Monika Otting
34:27
If you have not done so during registration and need to submit your ISA or SAF Certification #, send it to treefundwebinars@gmail.com
Zara Brown
34:35
Hamilton, Ontario is here!!
Ryan Johnson
35:00
Ryan Johnson, Cedar City Utah
Negin Almassi
35:43
Lemont, IL
Sarah Regent
35:46
Saskatchewan here too!
Lance Bright
36:20
Madison, WI
Chris Cowles
36:48
RavensNation, MD is here
Carlos Benavides Pacheco
37:07
Hi everyone. I greet you from Calarcá, Colombia!
Trevor Goulet
37:19
Hamilton, Ontario here (another one!)
Ryan Grasso
37:22
Paradise, CA
beau brodbeck
37:25
Welcome everyone! Great group today. Thanks for joining and supporting the Tree Fund.
Sarah Nelson
37:38
south bend IN
Deborah McGarry
38:48
Hi from Seattle, Washington
Chris Cowles
39:24
used to calculate CRZs and SRZs for tree preservation in CAD
Mark Ventresca
39:36
Hi from Toronto, Ontario
Larry Bright
40:15
hello from Salt Lake City Utah. Larry Bright 4130A
Ellis Allen
40:17
Hi from Cape Cod
Susan Knoch
41:05
Hey, Susan here from Georgia
Monika Otting
44:36
Please help us fund even more research projects like this one by making a tax-deductible donation to TREE Fund at https://app.etapestry.com/onlineforms/TREEFund/donationform.html
john harris
44:44
Attending from sunny south Florida, great to have these technical sessions that help improve our field practices as urban foresters and arborists.
Mary Bauer
44:44
Hello from SE Michigan, USA Mary A Bauer, Arborist
Mary Bauer
53:11
I always found DBH amusing, because being short, DBH is precisely eye-level for me. Makes measuring easier.
Chris Cowles
53:37
true for my city lot too!
Flora Harding
54:35
In the UK we tend to plant small trees as large trees don't live long enough to reach their potential. Average life in an urban area is 30 years.
Sarah Regent
55:40
It's largely public demand here. When given a choice of boulevard tree, people largely prefer a shorter tree with ornamental flowers over a shade tree
Monika Otting
56:20
Thank you John for your generous donation to TREE Fund!
Mary Bauer
56:40
We have a tremendous # of power outages due to trees falling on power lines in storms. Replanting is increasingly concentrating on shorter, multi-stemmed trees and better siting of trees.
Chris Cowles
58:47
plus retirees don’t like huge trees with nuts
Stephen Smith
58:59
Clients are asking for more small trees; don't want anything that might fall on the house later or cost a lot to take down.
Trevor Goulet
59:02
I absolutely agree with the concern with this issue of too many small statured trees being planted due to O/H utility constraints!
Michael McCoy
59:21
any comments on the common practice of using simple addition to add all stem measurements?
Jason Kruegel
01:00:04
Root zone space is an issue in dense urban neighborhoods.
Norman Pattison
01:02:11
Coniferous species such as Picea abies (Norway Spruce) are conically symetrical and make more sense for urban trees. Conically symetirical trees can be trimmed for power lines by trimming out a few side stems leaving the main stem conically symetrical. Also, Picea species tend to be more tolerant to road salt in those areas where road salt is used and killing deciduous species.
james ward
01:03:39
we in orange county (orlando) seek the architectural physical 'enclosure' of the street corridor. Our efforts at improving urban form, and increasing 'walkability' will be useless, without shaded streets and sidewalks. UNderstory trees (our Code's word for 'small stature'... like crepe and holly) don't deliver our desired overhead shade / canopy / enclosure. Quercus Virginia get's it done, but can eventually lift curbs and sidewalks.
Stephen Weil
01:04:35
Being consistent in determining DBH seems especially relevant for insecticide application since dose is typically specified on a DBH basis. Some labels specify how/where exactly to measure DBH, but in cases were that is not specified, then what?
Stephen Smith
01:04:56
Replacement ratios of 3:1 for removals often leads to ridiculous needs for replacement plantings (eg 18 trees to plant on a 40x100 foot house lot) and cash-in-lieu alternative is very expensive, so the only way to find enough space on a lot and save money is to plant smaller growing trees.
Matt Dera
01:05:00
my response to clients that don’t want a tall tree for fear of property damage “it’ll be someone else’s problem by the time it gets that big”.
Robert Beeson
01:05:19
It was probably for simplicity in cursing timber
Monique Slipher
01:05:59
Do you mean cruising timber?? ;)
Chris Cowles
01:06:36
Image
Mary Bauer
01:07:05
Timber cruising in MI in winter, 4.5’ was above the snow line & convenient for a male wearing snowshoes.
Robert Beeson
01:07:14
lol yes I did
Monique Slipher
01:07:41
Although sometimes it deserves cursing! :)
Chris Cowles
01:07:53
Germans!
Monika Otting
01:07:58
Thank you Robyn for your donation!
Monika Otting
01:12:20
Thank you William. Your gift will help us make a difference!
Stephen Smith
01:12:50
4.5 feet was 4.3 rounded up, for convenience. Makes sense. Doesn't need to be more complicated than that.
Chris Cowles
01:13:56
forestry technician who do most measuring for timber do not carry a tape measures around
Pamela Teddy
01:13:57
oh I thought we might get some additional tips/tricks to make multi-stem measuring easier
Slavica Mickovic
01:14:01
thank you, this was very informative
Norman Pattison
01:14:01
DBH, Girard Form Class, and other standard measurement techniques are used to determine lumber volume yield. Why are you so concerned about DBH when you are not actually measuring volume?
Jim Bell
01:14:13
thanks guys
Norman Pattison
01:14:55
I think that you have over evaluated the whole situation.
Jim Bell
01:15:11
Red Bluff California in the house
Norman Pattison
01:15:18
And made it all more complicated.
Mary Bauer
01:15:49
When I calculate fertilization amounts and dosage requirements for tree injection, I use DBH and circumference at ground level.
Charlie English
01:15:57
on some trees I will measure each stem and a basal measurement and average
Norman Pattison
01:16:07
You actually did not come up with a final conclusion.
Chris Cowles
01:17:03
Did no one do test of similar trees planted at the same time, one limbed up the other not. For urban trees we are after comparisons for our calculations such as crzs and srzs.
Mark Ventresca
01:17:10
So the height of DBH confirms my suspicion, arbitrary and even worse, based on one person. I am not sure why the conversion of 4.5ft goes to 1.3m as 1.4m is much closer to the same?
jim thompson
01:18:26
Have we beaten a dead horse further to its death
Andreu Riebe
01:18:54
a great presentation! It was an interesting look into DBH and trying to find a common background reasoning!
Monique Slipher
01:19:16
Really interesting to get some historical context for modern-day arboricultural practices. I'm impressed by the in-depth research you did on that. When we want to question or change current practices (in any field), it's always helpful to start w/why is this practice used in the first place?
Mark Ventresca
01:20:35
Definitely need to indicate at what height you measured if deviating from the "standard"
jim thompson
01:20:41
Thank you for the historical
Nicholas Linehan
01:20:44
have you considered the American nursery standards for multi-stem and clump trees?
Flora Harding
01:20:58
Completely agree.
Andreu Riebe
01:21:02
yes
Monika Otting
01:22:14
Thank you David for your donation. Your generosity is much appreciated
Stephen Smith
01:22:18
All that really matters is consistency, not whether the chosen height is a certain number (unless a particular height makes the job harder without giving you something useful). A measured diameter is much more useful than a calculated one, less prone to mistakes. Just need to pick a standard and stick to it.
Shanelle Labrie
01:22:22
that's true- should be noted when measuring at a slightly lower/higher height than normal, e.g., large conk, would affect measurement
Nicholas Crawford
01:22:24
I would really like to see adding half of the additional stems researched more fully. It often gives a more realistic number relative to canopy size.
Brian Jorgenson
01:22:43
for appraisals, area of each stem is added together. but all stems are measured at 4.5 feet
Richard Gibney
01:22:54
What about measuring below the fork and adding all the stems at 4.5 - adding those two totals and dividing by 2.
Andreu Riebe
01:23:18
Stephen- I think this is more looking at what that standard is easiest and more useful
Judith Wright
01:23:26
In relationship to permits: One local authority has it that with a mulitstem tree that you remove, the number of stems over 20 cm DBH trees equally the number of stem and then increases with their sizes! Another requires adding up all stems and that equals your DBH. Another has it that your DBH for permits for mulit stem trees you only need one stem over 30 cm DBH. I have one local authority use height of DBH 1.4 and 1.3.
Judith Wright
01:24:03
another at 1.3
Chris Madison
01:24:06
Just goes to show how important it is to read the tree ordinance that you are performing work for.
Robert Wood
01:24:08
The 1/2 count for multi stems is also documented in utility removal contracts, for reasons of projected labor costs.
Monika Otting
01:24:11
Thank you Jose!
Mary Bauer
01:24:16
Doubles the time per tree, which, when you’re measuring ALL the trees along ALL the streets in a city, is a big consideration.
Brian Templeton
01:24:16
As a program manager for "train the trainer" for volunteer data collection, a simple way to measure multistem trees is extremely valuable. In practice we can't really trust any multistem data gathered by volunteers without verification. Yes, crapemyrtle is everywhere.
Chris Cowles
01:24:20
Wait crepe myrtle is a tree?
Jennifer cormier
01:24:51
In relationship to permits: One local authority has it that with a mulitstem tree that you remove, the number of stems over 20 cm DBH trees equally the number of stem and then increases with their sizes! Another requires adding up all stems and that equals your DBH. Another has it that your DBH for permits for mulit stem trees you only need one stem over 30 cm DBH.
Charlie English
01:25:10
I’m with gibney
Brian Jorgenson
01:25:24
we need to push for a) increases in planter space for street trees and b) planting the largest size possible for the space.
Judith Wright
01:25:45
DBH is what each Local authority have defined it at!
Ryan Johnson
01:26:08
is there a list of protocols that standardizes each measurement method that one might choose? If so, where can I get it?
Marcus Ferreira
01:26:12
Measuring DBH at 30 cm for all trees (single stem and multistem) seems the way to go for consistency, even if it makes tall males have to duck a bit ;)
Kristin Lenox-Rustin
01:26:14
DBH reconsideration is a great idea! The current method is way too time consuming and inconsistent for multi-stem trees. Great topic to redefine!
Stephen Smith
01:26:22
I find it unbelievable that we're not all using the same system yet! Why would any municipality pick a different standard than everyone else?
Monika Otting
01:26:24
Thank you Chris for your donation!
Shanelle Labrie
01:26:35
an international standard could be amazing
David Stephenson
01:27:06
I thought we were supposed to use Q&A for questions to presenters
Sarah McPike
01:27:30
when I saw the topic, I thought “how much could they possibly say??”, but this was fascinating and very helpful!!
Mary Bauer
01:27:31
You are pre-supposing that each city’s standards are conveniently available online for other cities to study. They aren’t.
Brian Jorgenson
01:27:37
indeed
Chad Danos
01:27:58
Thank you from Baton Rouge, LA. Geaux Tigers!!
james ward
01:28:24
wish a slide articulated the superiority (for various reasons) of large -vs- small trees . . .but i understand that tree canopy form is not this meetings topic.
Richard Gibney
01:28:27
Trees on steep slopes can be problematic as well
Adrian Lamont
01:28:32
thank you
Helen Shadowens
01:28:41
thanks for another great, informative webinar! greatly appreciate it
Melissa Sturdivant
01:28:43
Thank you!
Kari Biddix
01:28:46
Thank you from Flower Mound, TX!!!
Larry Bright
01:28:47
thank you all so much extreme Lee informative I certainly appreciated it
Flora Harding
01:28:48
Thank you so much. It was really interesting!
Marcus Ferreira
01:28:49
Thank you, great presentation!
Judy Hauser
01:28:50
Thank you from Abbotsford, British Coumbia, Canada
Ash Baron
01:28:51
Thank you!
Ryan Torres
01:28:52
Thank you
Kristin Lenox-Rustin
01:28:54
Thanks!
Lydia Kan
01:28:57
Thank you!
Bennie Bivins
01:29:00
thank you
Ryan Johnson
01:29:00
Thank you
Brian Jorgenson
01:29:01
thanks everyone
Mary Bauer
01:29:01
Thank you, this has been interesting and informative!
Robert Wood
01:29:04
Thank You All!
james ward
01:29:04
thanks, folks , from Orlando
Kevin Pittman
01:29:08
Larger tree measurements can be impacted by base swell at D30.
Paul Anderson
01:29:10
Go Seahawks
Chi Hang Leung
01:29:12
thank you
Charlie English
01:29:13
thank you!
Robin LM Ostermayer
01:29:13
Very interesting.. That you!
Graciela Rivera
01:29:17
Thank you so much! From Mexico city
Mohammad Affisshan
01:29:23
thanks, nicely done.
Carlos Benavides Pacheco
01:29:24
Thank you!
Chris Cowles
01:29:28
Ixtuacán
Silvia Jauregui
01:29:29
I truly appreciate the information. Thank you!
Paul Tibbets
01:29:31
Thanks, it was great.
Sarah Lilley
01:29:31
That was wonderful. Thank you for looking into the standardization and equity of DBH.
Hannah Kuhns
01:29:31
The program evaluation survey makes you choose additional people, even if you're the only one watching, in order to submit the survey, fyi
Scott Nielson Owner
01:29:33
+Wahoo Tree
Nicholas Linehan
01:29:34
thanks from Baltimore
Terrence Flanagan
01:29:37
Much better presentation than expected. Thank you.
Sergio Olvera
01:29:37
than you from Phoenix AZ
TED KAPERA
01:29:37
THANK YOU ALL
Hannibal Hayes
01:29:38
Thanks from Minnesota eh!
Mark Ventresca
01:29:38
Thank you very interesting, requires more research on what should be a standard for different purposes!
Ethan Johnson
01:29:39
Thank you from Kirtland, Ohio
Charlie English
01:29:43
boomer sooner!
Shanelle Labrie
01:29:44
thank you very much!
Larry Bright
01:29:44
thank you for Larry Bright 4130A
Joey Watt
01:29:48
thank you
Heather Griffin
01:29:48
Thank you from Flint, MI!
Al De Reu
01:29:56
Thanks!
Judith Wright
01:29:57
thank you from AJax, Ontraio
Tsen Yang Lee
01:29:58
thanks
Pamela Teddy
01:30:05
thank you
Luis Moreno
01:30:10
Thank you from MiamiDade
Greg Wallace
01:30:11
Thank you, very good presentation.
william price
01:30:11
Thank you
Ross Lucas
01:30:13
thanks
Jim Bell
01:30:16
thanks