Skip to Main Content
Host-parasite distributions under changing climate: Tsuga heterophylla and Arceuthobium tsugense in AlaskaAuthor(s): Tara M. Barrett; Greg Latta; Paul E. Hennon; Bianca N.I. Eskelson; Hailemariam Temesgen
Source: Canadian Journal of Forestry Research. 42: 642-656
Publication Series: Scientific Journal (JRNL)
Station: Pacific Northwest Research Station
PDF: View PDF (1.59 MB)
DescriptionDwarf mistletoes (Arceuthobium species) influence many processes within forested ecosystems, but few studies have examined their distribution in relation to climate. An analysis of 1549 forested plots within a 14.5 million ha region of southeast Alaska provided strong indications that climate currently limits hemlock dwarf mistletoe (Arceuthobium tsugense (Rosendahl) G.N. Jones) to a subset of the range of its primary tree host, western hemlock (Tsuga heterophylla (Raf.) Sarg.), with infection varying from a high of 20% of trees at sea level to only 5% by 200 m elevation. Three types of modeling approaches (logistic, most similar neighbor, and random forests) were tested for the ability to simultaneously predict abundance and distribution of host and pathogen as a function of climate variables.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- 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.
CitationBarrett, Tara M.; Latta, Greg; Hennon, Paul E.; Eskelson, Bianca N.I.; Temesgen, Hailemariam. 2012. Host-parasite distributions under changing climate: Tsuga heterophylla and Arceuthobium tsugense in Alaska. Canadian Journal of Forestry Research. 42: 642-656.
Keywordsclimate envelope models, species distribution modeling, climate niche, climate change, dispersal
- Distribution of western hemlock dwarf mistletoe (Arceuthobium tsugense [Rosendahl] G.N. Jones Subsp. tsugense) in mature and old-growth Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) forests
- A synthesis of the literature on the biology, ecology, and management of western hemlock dwarf mistletoe.
- Control of Western Dwarf Mistletoe with the plant-growth regulator Ethephon.
XML: View XML