Skip to main content

ASU Global menu

Skip to Content Report an accessibility problem ASU Home My ASU Colleges and Schools Sign In
Arizona State University Arizona State University
ASU Library KEEP

Main navigation

Home Browse Collections Share Your Work
Copyright Describe Your Materials File Formats Open Access Repository Practices Share Your Materials Terms of Deposit API Documentation
Skip to Content Report an accessibility problem ASU Home My ASU Colleges and Schools Sign In
  1. KEEP
  2. Theses and Dissertations
  3. ASU Electronic Theses and Dissertations
  4. Impact of restoration practices on mycorrhizal inoculum potential in a semi-arid riparian ecosystem
  5. Full metadata

Impact of restoration practices on mycorrhizal inoculum potential in a semi-arid riparian ecosystem

Full metadata

Description

Mycorrhizal fungi form symbiotic relationships with plant roots, increasing nutrient and water availability to plants and improving soil stability. Mechanical disturbance of soil has been found to reduce mycorrhizal inoculum in soils, but findings have been inconsistent. To examine the impact of restoration practices on riparian mycorrhizal inoculum potential, soil samples were collected at the Tres Rios Ecosystem Restoration and Flood Control Project located at the confluence of the Salt, Gila, and Agua Fria rivers in central Arizona. The project involved the mechanical removal of invasive Tamarix spp.( tamarisk, salt cedar) and grading prior to revegetation. Soil samples were collected from three stages of restoration: pre-restoration, soil banks with chipped vegetation, and in areas that had been graded in preparation for revegetation. Bioassay plants were grown in the soil samples and roots analyzed for arbuscular mycorrhizal (AM) and ectomycorrhizal (EM) infection percentages. Vegetations measurements were also taken for woody vegetation at the site. The mean number of AM and EM fungal propagules did not differ between the three treatment area, but inoculum levels did differ between AM and EM fungi with AM fungal propagules detected at moderate levels and EM fungi at very low levels. These differences may have been related to availability of host plants since AM fungi form associations with a variety of desert riparian forbs and grasses and EM fungi only form associations with Populus spp. and Salix spp. which were present at the site but at low density and canopy cover. Prior studies have also found that EM fungi may be more affected by tamarisk invasions than AM fungi. Our results were similar to other restoration projects for AM fungi suggesting that it may not be necessary to add AM fungi to soil prior to planting native vegetation because of the moderate presence of AM fungi even in soils dominated by tamarisk and exposed to soil disturbance during the restoration process. In contrast when planting trees that form EM associations, it may be beneficial to augment soil with EM fungi collected from riparian areas or to pre-inoculate plants prior to planting.

Date Created
2012
Contributors
  • Arnold, Susanne (Author)
  • Stutz, Jean (Thesis advisor)
  • Alford, Eddie (Committee member)
  • Green, Douglas (Committee member)
  • Arizona State University (Publisher)
Topical Subject
  • Ecology
  • Soil Sciences
  • Ecological Restoration
  • mycorrhizal
  • Tamarisks
  • Tamarix
  • Soil restoration
  • Soil Ecology
  • Mycorrhizal fungi
  • Plant-fungus relationships
  • Riparian ecology
  • Riparian plants--Inoculation.
  • Riparian plants
Resource Type
Text
Genre
Masters Thesis
Academic theses
Extent
vi, 33 p. : 1 col. map
Language
eng
Copyright Statement
In Copyright
Reuse Permissions
All Rights Reserved
Primary Member of
ASU Electronic Theses and Dissertations
Peer-reviewed
No
Open Access
No
Handle
https://hdl.handle.net/2286/R.I.15994
Statement of Responsibility
by Susanne Arnold
Description Source
Retrieved on Oct. 11, 2013
Level of coding
full
Note
Partial requirement for: M.S., Arizona State University, 2012
Note type
thesis
Includes bibliographical references (p. 30-33)
Note type
bibliography
Field of study: Applied biological sciences
System Created
  • 2013-01-17 06:40:52
System Modified
  • 2021-08-30 01:43:39
  •     
  • 1 year 5 months ago
Additional Formats
  • OAI Dublin Core
  • MODS XML

Quick actions

About this item

Overview
 Copy permalink

Explore this item

Explore Document

Share this content

Feedback

ASU University Technology Office Arizona State University.
KEEP

Contact Us

Repository Services
Home KEEP PRISM ASU Research Data Repository
Resources
Terms of Deposit Sharing Materials: ASU Digital Repository Guide Open Access at ASU

The ASU Library acknowledges the twenty-three Native Nations that have inhabited this land for centuries. Arizona State University's four campuses are located in the Salt River Valley on ancestral territories of Indigenous peoples, including the Akimel O’odham (Pima) and Pee Posh (Maricopa) Indian Communities, whose care and keeping of these lands allows us to be here today. ASU Library acknowledges the sovereignty of these nations and seeks to foster an environment of success and possibility for Native American students and patrons. We are advocates for the incorporation of Indigenous knowledge systems and research methodologies within contemporary library practice. ASU Library welcomes members of the Akimel O’odham and Pee Posh, and all Native nations to the Library.

Number one in the U.S. for innovation. ASU ahead of MIT and Stanford. - U.S. News and World Report, 8 years, 2016-2023
Maps and Locations Jobs Directory Contact ASU My ASU
Copyright and Trademark Accessibility Privacy Terms of Use Emergency COVID-19 Information