This dissertation examines how climate change affects mycorrhizal fungal communities in boreal and arctic ecosystems. In chapter one, I revealed that increases in fire severity and related increases in deciduous tree dominance result in greater Ascomycota relative abundance (RA) and subsequent declines in Basidiomycota RA. In chapter two I analyzed the effects of post-fire mycorrhizal fungal communites on host growth. There were trends at the fungal genus level that were largely reflected at the guild level across all hosts; however, there were some fungal genera that had the opposite effect on different host species. In chapter three, I found host and depth specific effects of warming temperatures on arctic fungal communities colonizing host plants. In all three chapters there was greater resilience of mycorrhizal fungal communities colonizing hosts that are increasing in dominance across their respective biomes, and general increases in Ascomycota RA with climate change.
|Advisor:||Taylor, Donald Lee|
|Commitee:||Natvig, Donald Owen, Collins, Scott L, Mack, Michelle M|
|School:||The University of New Mexico|
|School Location:||United States -- New Mexico|
|Source:||DAI-B 81/4(E), Dissertation Abstracts International|
|Keywords:||acrtic, boreal, climate change, fungi, mycorrhizal ecology|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be