Title: Effects of GPS sampling intensity on home range analyses
Author: Kolodzinski, Jeffrey J.; Tannenbaum, Lawrence V.; Osborn, David A.; Conner, Mark C.; Ford, W. Mark; Miller, Karl V.;
Source: In: 2010 proceedings, annual conference SEAFWA. 13-17.
Publication Series: Paper (invited, offered, keynote)
Description: The two most common methods for determining home ranges, minimum convex polygon (MCP) and kernel analyses, can be affected by sampling intensity. Despite prior research, it remains unclear how high-intensity sampling regimes affect home range estimations. We used datasets from 14 GPS-collared, white-tailed deer (Odocoileus virginianus) to describe the size and location accuracy of home range estimates calculated from different sampling regimes. We compared monthly home range estimates from seven sub-samples (480, 360, 180, 90, 60, 30, and 15 locations) to the home range estimates of the complete datasets (720 locations). Minimum convex polygon (MCP) home range size estimates calculated from datasets with > 180 locations were not statistically different. Areas calculated with 60-90 locations may underestimate MCP size by 50% or more. As demonstrated in past studies, we found that kernel home range analyses accurately estimated home range size for all sampling regimes. However, considerable locational errors were associated with lower sampling regimes, resulting in misclassifications of areas of use and non-use. An average locational error > 40% was observed for our least intensive sampling regime, while sampling regimes collecting 480 and 360 locations had less than 10% relative error. Since GPS technology can generate large sample sizes, researchers should use kernel analyses because MCP ignores much of the data generated. Also, because significant location error may be associated with MCP home ranges calculated from small sample sizes, the results of many previously published studies should be interpreted with care.
Keywords: deer, GPS collars, Odocoileus virginianus, sampling intensity
- 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.
- This publication may be available in hard copy. 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.
XML: View XML
Kolodzinski, Jeffrey J.; Tannenbaum, Lawrence V.;Osborn, David A.; Conner, Mark C.; Ford, W. Mark; Miller, Karl V. 2010. Effects of GPS sampling intensity on home range analyses. In: 2010 proceedings, annual conference SEAFWA. 13-17.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility