U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Northern Great Plains Research Laboratory: Mandan, ND
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    Careers


        


                    Employment
                        Work With Us
                                    ARS Vacancies at USDAJOBS
                    Local News
                        INTEGRATOR
                                    Bottom Line Ag SummitSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Mandan, North Dakota Northern Great Plains Research Laboratory Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications
- IACUC Executive Minutes

Title:   Author  item
                                            Hendrickson, Johnitem
                                            Johnson, Douglasitem
                                            SALIENDRA, NICANOR - UTAH STATE UNIVERSITYitem
                                            WALKER, JOHN - TEXAS A&Mitem
                                            Blackburn, Harvey
  Submitted to: Range Management Meeting Proceedings
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 1/28/2003
                                    Publication  Date: 2/4/2003
                                    Citation: Hendrickson, J.R., Johnson, D.A., Saliendra, N.Z., Walker, J.W., Blackburn, H.D. 2003. Big sagebrush leaf area dynamics on a burned, grazed and control site in the sagebrush steppe. Range Management Meeting Proceedings.Interpretive Summary:
                                Technical Abstract: Big sagebrush (Artemisia tridentata Nutt.) is an important shrub for wildlife habitat and carbon sequestration in the western U.S.  The effects of fire and grazing on leaf area development of big sagebrush were investigated in plots established on a 16-ha burned site, a 12-ha grazed site and 16-ha control site at the U.S. Sheep Experiment Station near Dubois, Idaho.  The burned site was burned in October 1995, and grazing at the grazed site occurred in the spring and fall of each year.  Leaf area for big sagebrush was estimated in 1998 using the reference unit technique.  In 1999, changes in big sagebrush leaf area were estimated by harvesting 5 leaders from 30 shrubs every 2 weeks beginning on 2 June 1999.  Values of peak leaf area for big sagebrush in 1998 were 2290, 2022 and 224 cm2/m2 for the control, grazed and burned sites, respectively.  From 2 June 1999 to peak growth on 28 June 1999, leaf area of big sagebrush increased at a rate of 0.05cm-2 day-1.  Initial and peak leaf area per leader were higher at the grazed site than that at the burned and control sites.  Grazing may have reduced competition from the associated vegetation and resulted in greater big sagebrush leaf area on the grazed site.  Understanding leaf area dynamics of big sagebrush is important in the development of models to predict changes in carbon sequestration and wildlife habitat.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov