Entering Trees Into Our Database
by edfrank » Wed Apr 25, 2012 1:55 pm
NTS, There are more and more people participating in the Native Tree Society and who are out there measuring trees. For those people measuring trees I strongly encourage you to submit your measurements not only to the BBS, but to post them to our Database as well. http://www.treesdb.org/
Mitch Galehouse has done an excellent job of creating the database (some of it is still under construction.) Please read our tree measuring guidelines before submitting tree measurement data http://www.nativetreesociety.org/measure/Tree_Measuring_Guidelines-revised1.pdf
I want to offer two items of caution for people submitting their measurements to the database. The heights must be measured using one of three methods: 1) NTS laser rangefinder/clinometer sine-top/sine-bottom methods outlined in our tree measuring guidelines, 2) climb and tape drop measuring the top of the tree also as outlined in our tree measuring guidelines, or 3) by a pole measurement where the height is directly measured using a pole. If you have measured the tree in some other fashion, then the data does not meet our standards and should not be posted to our database. If you ave entered trees whoseheight has been measured by other than the methods listed above, please go back and delete these entries.
The second item of caution is the inclusion of multitrunk trees. We have discussed this subject many times. http://www.ents-bbs.org/viewtopic.php?f=235&t=3948 http://www.nativetreesociety.org/multi/index_multi.htm
For measurement purposes the girths of trees with more than one trunk must not be intermixed with those for trees with single trunks. A single trunk tree is one that would have a single pith at ground level. If the tree would have more than one pith at ground level it is a multitrunk tree. It doesn't matter if it is genetically the same, or growing from the same root stock, by definition used in our guidelines, if it would have more than one pith at ground level it is a multitrunk tree and must be differentiated from single trunk trees. Presently there is no place in the database structure to enter data for multitrunk trees. If you have measured one, and want to enter it into the database, please note that it is a multitrunk tree in the comments field, and we can fix it later when the database is complete.
Trees have been entered in the database that clearly appear in the photograph to be multitrunk trees, yet there is not indication in the comments that they are anything but single trunk trees. Yes it is up to the measurer to make the final determination in the case where there is a debate about whether something is single trunk or multitrunk, but in some of these cases there is no doubt the trees are multitrunk trees. (Yes a Nikon Forestry 550 combines both the rangefinder and clinometer and is acceptable). If you have entered a tree that is multitrunked, but failed to indicate that it is multitrunked in the comments section, please go back and edit the submission to reflect this fact. As an organization we need to maintain and protect the integrity of our data set.
"I love science and it pains me to think that so many are terrified of the subject or feel that choosing science means you cannot also choose compassion, or the arts, or be awe by nature. Science is not meant to cure us of mystery, but to reinvent and revigorate it." by Robert M. Sapolsky