Rocky Mountain Research Station Publications

RMRS Online Publication
RMRS-GTR-224: A watershed-scale monitoring protocol for bull trout

Isaak, Dan; Rieman, Bruce; Horan, Dona. 2009. A watershed-scale monitoring protocol for bull trout. Gen. Tech. Rep. RMRS-GTR-224. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 25 p.

Bull trout is a threatened species native to the Pacific Northwest that has been selected as Management Indicator Species on several national forests. Scientifically defensible procedures for monitoring bull trout populations are necessary that can be applied to the extensive and remote lands managed by the U.S. Forest Service. Distributional monitoring focuses primarily on temporal patterns of occurrence within suitable habitat patches, has minimal field sampling requirements, and can provide inference regarding large areas relevant to land management. This document describes: (1) using a geographic information system to stratify a river network into suitable and unsuitable habitats, (2) determining sample sizes and locations, (3) field sampling techniques, (4) basic trend analysis, and (5) an example application and cost estimates derived from a pilot project in Idaho.

Keywords: bull trout, distributional monitoring, trends, habitat patches, stream temperature

Related website: Multiple Regression Stream Temperature Model with data, maps, methods and related publications

About PDFs: For best results, do not open the PDF in your Web browser. Right-click on the PDF link to download the PDF file directly to your computer. Click here for more PDF help or order a printed copy of this publication.

Download RMRS-GTR-224

PDF File Size: 3.8 MB

Title: RMRS-GTR-224: A watershed-scale monitoring protocol for bull trout
Electronic Publish Date: March 26, 2009
Expires: Indefinite
Last Update:
April 2, 2009

RMRS Publications | Order a publication | Contact Us