Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (109 KB)

Title: Respiratory and physiological characteristics in subpopulations of Great Basin cheatgrass

Author: McCarlie, V. Wallace; Hansen, Lee D.; Smith, Bruce N.;

Date: 2001

Source: In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 271-275.

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: Cheatgrass (Bromus tectorum L.) is a dominant weed that has increased the frequency of wildfire in the Great Basin since its introduction approximately 106 years ago. Characteristics of respiratory metabolism were examined in eleven subpopulations from different habitats. Seeds from each subpopulation were germinated (4mm radicle) and metabolic heat rates (q) and respiration rates (RCO2) determined calorimetrically at 5 °C intervals from 5 to 30 °C or from 5 to 45 °C. From the experimental data, growth rates and ratios of q/RCO2 (a measure of efficiency) were calculated. In general, growth rate increases from a low temperature limit of 3 to 7 °C to an upper temperature limit between 27 to 31 °C. Beyond these limits growth ceases. These limits differ among subpopulations, and are related to the native microclimate.

Keywords: wildland shrubs, genetics, biodiversity, disturbance, ecophysiology, community ecology

Publication Notes:

  • 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.
  • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


McCarlie, V. Wallace; Hansen, Lee D.; Smith, Bruce N. 2001. Respiratory and physiological characteristics in subpopulations of Great Basin cheatgrass. In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 271-275.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.