Ecolog:
How useful is percent cover? How is it useful? Discuss?
WT
----- Original Message -----
From: "malcolm McCallum" <[email protected]>
To: <[email protected]>
Sent: Thursday, October 29, 2009 6:15 AM
Subject: Re: [ECOLOG-L] percent cover question
Image J will do it as Sarah said.
Also, you might try throwing it in ArcView.
Import the jpg and do raster analysis. You might need to regrid the
pixel size to lower resolution. Or you can do it the old fashioned
way. Print out the picture, cut out the canopy shots, weigh the
canopy vs non-canopy parts of the pic and then you can calculate the
percent = (canopy weight/total weight) x 100 = % canopy cover! :)
Malcolm
On Wed, Oct 28, 2009 at 4:54 PM, Lorna S R Joachim <[email protected]>
wrote:
Can anyone tell me how to calculate tropical canopy percent cover from
digital photographs. In Photoshop one can get a distribution but is there
a
program that could calculate % cover quickly and easily?
Thanks
Dr. Lorna Joachim
Adjunct Prof. of Research in Psychology
University of New Mexico, Department of Psychology
[email protected]
--
Malcolm L. McCallum
Associate Professor of Biology
Managing Editor,
Herpetological Conservation and Biology
Texas A&M University-Texarkana
Fall Teaching Schedule:
Vertebrate Biology - TR 10-11:40; General Ecology - MW 1-2:40pm;
Forensic Science - W 6-9:40pm
Office Hourse- TBA
1880's: "There's lots of good fish in the sea" W.S. Gilbert
1990's: Many fish stocks depleted due to overfishing, habitat loss,
and pollution.
2000: Marine reserves, ecosystem restoration, and pollution reduction
MAY help restore populations.
2022: Soylent Green is People!
Confidentiality Notice: This e-mail message, including any
attachments, is for the sole use of the intended recipient(s) and may
contain confidential and privileged information. Any unauthorized
review, use, disclosure or distribution is prohibited. If you are not
the intended recipient, please contact the sender by reply e-mail and
destroy all copies of the original message.
--------------------------------------------------------------------------------
Internal Virus Database is out of date.
Checked by AVG - www.avg.com
Version: 8.5.409 / Virus Database: 270.14.3/2411 - Release Date: 10/03/09
06:20:00
