Skip to main content

Assessing Growth and Mortality of Bristlecone Pine Infected by Dwarf Mistletoe Using Dendrochronology

The full text article is temporarily unavailable.

We apologise for the inconvenience. Please try again later.

Bristlecone pine dwarf mistletoe (Arceuthobium microcarpum [Engelm.] Hawksw. & Wiens subsp. aristatae J.M.Scott & Mathiasen) severely parasitizes Rocky Mountain bristlecone pine (Pinus aristata Engelm.) on the San Francisco Peaks, Arizona. We estimated the current incidence of infection and extent of mortality in a mistletoe-infested stand of bristlecone pine on Schultz Peak, a southeast subsidiary ridge of the San Francisco Peaks. Dendrochronological techniques were used to compare radial growth between lightly, moderately, and severely infected and noninfected bristlecone pines. We also paired limber pine (Pinus flexilis James) with noninfected and infected bristlecone pines as another method of estimating the effects of the mistletoe on radial growth. Results suggested that the incidence of infection has increased by approximately 10%, and mortality has increased by approximately 20% since the mid-1970s. Severely infected bristlecone pines had significant growth losses and less annual variation in growth than limber pine or lightly infected and noninfected bristlecone pines. Spatial and temporal trends in mortality of bristlecone pines were measured in two large mortality locations on Schultz Peak. Cross-dating cores from dead bristlecone pines indicated that mortality had rapidly increased starting in 1996. Years of high mortality were related to both high mountain pine beetle (Dendroctonus ponderosae Hopkins) activity and drought conditions.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Arceuthobium microcarpum; Pinus aristata; northern Arizona; tree-ring analysis

Document Type: Research Article

Publication date: 02 August 2012

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more