Skip to Main Content
Field efficiency and bias of snag inventory methodsAuthor(s): Robert S. Kenning; Mark J. Ducey; John C. Brissette; Jeffery H. Gove
Source: Canadian Journal of Forest Research 35:2900-2910
Publication Series: Scientific Journal (JRNL)
Station: Northeastern Research Station
PDF: Download Publication (1.32 MB)
DescriptionSnags and cavity trees are important components of forests, but can be difficult to inventory precisely and are not always included in inventories because of limited resources. We tested the application of N-tree distance sampling as a time-saving snag sampling method and compared N-tree distance sampling to fixed-area sampling and modified horizontal line sampling in mixed pine-hardwood forests of southern Maine and New Hampshire. We also present a novel modification of N-tree distance sampling that limits the distance from plot center that an observer must search to find tally trees. A field test shows N-tree to be quick, but generally biased and characterized by high variability. Distance-limited N-tree sampling mitigates these problems, but not completely. We give recommendations for operational snag inventory in similar forest types.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationKenning, Robert S.; Ducey, Mark J.; Brissette, John C.; Gove, Jeffery H. 2005. Field efficiency and bias of snag inventory methods. Canadian Journal of Forest Research 35:2900-2910
- Mark-recapture estimation of snag standing rates in northern Arizona mixed-conifer and ponderosa pine forests
- Modeling snag dynamics in northern Arizona mixed-conifer and ponderosa pine forests
- A practical modification of horizontal line sampling for snag and cavity tree inventory
XML: View XML