Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Agriculture -- Planning -- Environmental aspects -- Columbia River Watershed (1)
- Air quality (1)
- Brachypodium (1)
- Bryophytes (1)
- Bunchgrasses -- Cultural control -- Oregon (1)
-
- Giant reed -- Physiology (1)
- Invasive plants -- Biological control -- Oregon (1)
- Isoprene -- Synthesis (1)
- Mosses -- Ecophysiology (1)
- Mosses -- Reproduction -- Effect of high temperatures on (1)
- Mutualism (Biology) -- Oregon (1)
- Plant competition (1)
- Plants -- Development (1)
- Vesicular-arbuscular mycorrhizas (1)
- Vesicular-arbuscular mycorrhizas -- Cultural control -- Oregon (1)
Articles 1 - 4 of 4
Full-Text Articles in Life Sciences
Assessment Of Arbuscular Mycorrhizal Symbiosis On Invasion Success In Brachypodium Sylvaticum, Caitlin Elyse Lee
Assessment Of Arbuscular Mycorrhizal Symbiosis On Invasion Success In Brachypodium Sylvaticum, Caitlin Elyse Lee
Dissertations and Theses
The effects that mutualistic soil biota have on invasive species success is a growing topic of inquiry. Studies of the interactions between invasive plants and arbuscular mycorrhizal fungi (AMF) have shown changes in AMF community composition, reductions in AMF associations in invasive plants, and changes in native species fitness and competitive outcomes in invasive-shifted AMF communities. These findings support the degraded mutualist hypothesis, where invasive species alter the mutualist community composition, resulting in detrimental associations with the new mutualist community for native species. Here I present two studies that examine various aspects of the arbuscular mycorrhizal fungal (AMF) mutualism in …
Testing The Ecological And Physiological Factors Influencing Reproductive Success In Mosses, Erin Elizabeth Shortlidge
Testing The Ecological And Physiological Factors Influencing Reproductive Success In Mosses, Erin Elizabeth Shortlidge
Dissertations and Theses
As non-vascular, early land plants with an aquatic ancestry, mosses do not regulate internal water conditions separate from that of their environment and as a result, evolved mechanisms to survive in a terrestrial world out of water. Yet, there is a widely accepted dogma that moss reproductive success is solely dependent on rainfall events carrying swimming, bi-flagellate sperm across the landscape to reproductively mature and receptive female mosses--but this classic view of moss reproduction may be too simplistic. In this dissertation I test the assumptions of reproductive limitation in mosses and present novel findings in a basal, yet understudied terrestrial …
Agricultural Management Decisions Impact Isoprene Emission And Physiology Of Arundo Donax, An Emerging Bioenergy Crop, Jason Charles Maxfield
Agricultural Management Decisions Impact Isoprene Emission And Physiology Of Arundo Donax, An Emerging Bioenergy Crop, Jason Charles Maxfield
Dissertations and Theses
Arundo donax (Giant Reed) is quickly being developed as a rapidly-growing, robust, and highly productive bioenergy crop, with large scale cultivation of this species planned for the Columbia River basin of the Pacific Northwest (USA). Despite its potential as a next generation biomass crop, relatively few studies have examined the physiological performance of A. donax under agricultural conditions. Unlike traditional crops, A. donax is known to be a high-emitter of the volatile compound isoprene, which may significantly impact regional air quality, but it has not been widely cultivated in North America and little is known about how this species will …
Effects Of Arbuscular Mycorrhizal Fungal Infection And Common Mycelial Network Formation On Invasive Plant Competition, Rachael Elizabeth Workman
Effects Of Arbuscular Mycorrhizal Fungal Infection And Common Mycelial Network Formation On Invasive Plant Competition, Rachael Elizabeth Workman
Dissertations and Theses
Understanding the biotic factors influencing invasive plant performance is essential for managing invaded land and preventing further exotic establishment and spread. I studied how competition between both conspecifics and native co-habitants and arbuscular mycorrhizal fungal (AMF) impacted the success of the invasive bunchgrass Brachypodium sylvaticumin early growth stages. I examined whether invasive plants performed and competed differently when grown in soil containing AMF from adjacent invaded and noninvaded ranges in order to determine the contribution of AMF to both monoculture stability and spread of the invasive to noninvaded territory. I also directly manipulated common mycelial network (CMN) formation by AMF …