Daubenmire Versus Line-Point Intercept: A Response to Thacker et al. (2015)

Author: 
Martyn, Trace E.
Beltz, Christopher W.
Palmquist, Kyle A.
Pennington, Victoria E.
Rottler, Caitlin M.
Lauenroth, William K.
Publisher: 
Society for Range Management
Publication Year: 
2015
Description: 
On the Ground• Thacker et al. compared two common techniquesfor assessing greater sage-grouse habitat: Daubenmirequadrats and line-point intercept sampling.• Sampling only 16 Daubenmire quadrats may nothave been adequate to support Thacker et al.’sassertion that line-point sampling yields highercover values and that the two methods are notcomparable.• Using data from sagebrush ecosystems in Montana,we show that mean percent cover changesdepending on the number of Daubenmire quadratssampled and that 16 Daubenmire quadrats may notbe sufficient to accurately characterize sagebrushvegetation.• Assessing the appropriate sampling effort for themethod and study is a crucial part of designingsampling protocols and has implications for greatersage-grouse management and conservation.Keywords: Artemisia tridentata, Daubenmire quadrats,habitat assessment, line-point intercept, greatersage-grouse, sampling methodology.
Document Type: 
Journal Issue/Article
Society for Range Management

Rangelands, a publication of the Society for Range Management, serves as a forum for the presentation and discussion of facts, ideas, and philosophies pertaining to the study, management, and use of rangelands. The journal features scientific and historical articles as well as Society news. It provides readers with scientifically accurate information in a user-friendly format, placed in context of the world we live in today. Rangelands is a practical (non-technical) counterpart of Rangeland Ecology & Management (formerly the Journal of Range Management). The Global Rangelands collection includes articles from Rangelands up to 3 years from the current year. Access to more recent content is available by subscription from BioOne and the Society for Range Management and may also be available at your local university library. 
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