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Re: Forest Hill Cemetery, Fredonia, NY

Posted: Fri Jul 11, 2014 12:28 pm
by Erik Danielsen
After returning my malfunctioning nikon 440, I jumped on a deal on a demo unit of a newer Bushnell rangefinder model that displays an accelerometer-based angle reading in degrees in the viewfinder (normally well out of my price range, but in this case barely pricier than the used 440). I'll be working on calibrating and testing it over the next week to figure out how to get the best measurements out of it, or whether indeed it's a good purchase (I have a 15-day return window). I'm a little concerned by the fact that it only displays in whole yards/meters and whole degrees, but with calibrated clickovers and using steep angles where possible I suspect the precision is livable until I can afford to improve my setup.

That said, I was naturally excited to be able to measure things and immediately returned to Forest Hill cemetery. Most of the quick measurements I did suggest that the majority of the trees here are under 100 feet tall, which is probably unsurprising for an open site. I put a little more time into measuring the 11'5" cbh red maple above, which came to 98.7 feet tall, the 9'7" cbh Shagbark Hickory (this vigorous tree is probably the second tallest on the site) at 104 feet (not sure I found the top, though) and the big 16'2" cbh tuliptree at 123.1 feet, all of course by ENTS sine method. I'll consider these measurements preliminary until I've got the calibration worked out, but it was very exciting to top 120' with the tulip (a different angle gave me 120.6 feet). At the nearby college woodlot (a small site I'm working on documenting) one of the tulips gave me 116' on a straight-up shot (definitely not the top) and is in the company of numerous other tall forest-grown trees, so I'm expecting to get some height at that site. This rangefinder doesn't seem great for brush penetration so it'll take some work.

Re: Forest Hill Cemetery, Fredonia, NY

Posted: Fri Jul 11, 2014 4:35 pm
by dbhguru
Erik

Your tuliptree numbers are quite reasonable for the latitude. Neil Pederson, now at Harvard Forest eventually wants to profile that species across its range. Your, Tom's, and Elijah's inputs are going to be quite valuable.

Bob

Re: Forest Hill Cemetery, Fredonia, NY

Posted: Fri Jul 11, 2014 4:44 pm
by Erik Danielsen
Well I can confidently say that there will be plenty of data to supply! Along with the mentioned, my favorite forest site is a small but deep gorge a few miles away with and upland forest dominated by tulip (reforested during the depression era) but also some much older tulips in a sliver of steep slope forest. I look forward to compiling that report as well. Hopefully we'll be getting down to zoar for some good measuring this fall as well.