Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"mycorrhizal associations"”.
-
An analysis of the potential effects of air pollutants emitted during coal combustion on yellow poplar and loblolly pine and influences on mycorrhizal associations of loblolly pine
… treatments. Loblolly pine seedlings, nonmycorrhizal and mycorrhizal with Pisolithus tinctorius, were fumigated with 0.07 ppm ozone and 0.06 ppm sulfur dioxide singly and in combination, 6 hr/day, for 35 consecutive days. Height growth of mycorrhizal and nonmycorrhizal seedlings was not …
-
Tree community assembly and biogeochemical processes along an elevational gradient in western Panama
… evaluates how edaphic factors, climate, and mycorrhizal associations drive tree community assembly, C storage, and biogeochemical processes along environmental gradients. Using a set of twelve plots in a premontane forest established along a natural fertility gradient, I was able to determine …
-
Tradeoffs Between Aboveground and Soil Carbon Accumulation Following Forestation
… effects of prior land use, regrowth strategy, mycorrhizal associations, and environmental factors on total ecosystem carbon and SOC accumulation over time. Results indicate that while there is a tradeoff between SOC and aboveground carbon accumulation, the loss of SOC does not negate the …
-
Effects of soil nutrient availability on the development of tropical monodominance and subordinate species composition in montane forests
… this study aimed to understand how an ectomycorrhizal tree species, Oreomunnea mexicana, achieves high abundance. The study assessed soil properties along with species composition using a paired plot design consisting of mixed forest and nearby Oreomunnea-dominated forest sampled at four …
-
The Influence of Heavy Metals upon Tree Growth in South Wales Forests
… sites, there were disturbances in the root-mycorrhizal associations indicating that tree growth may also be indirectly affected by the heavy metals in the soil.<br/>
-
ARBUSCULAR MYCORRHIZAL RESPONSES TO BIOCHARS IN SOILS - POTENTIAL MECHANISMS OF INTERACTION AND OBSERVED RESPONSES IN CONTROLLED ENVIRONMENTS
… influences of biochar (charcoal) on arbuscular mycorrhizal fungi (AMF). The first part of this study is a critical examination and conceptual overview of the literature regarding biochar and AMF available before July 2007. In the second part, I present three experiments all designed to evaluate …
-
ARBUSCULAR MYCORRHIZAL RESPONSES TO BIOCHARS IN SOILS - POTENTIAL MECHANISMS OF INTERACTION AND OBSERVED RESPONSES IN CONTROLLED ENVIRONMENTS
… influences of biochar (charcoal) on arbuscular mycorrhizal fungi (AMF). The first part of this study is a critical examination and conceptual overview of the literature regarding biochar and AMF available before July 2007. In the second part, I present three experiments all designed to evaluate …
-
Nitrogen isotope variation in the environment: Implications for interpretation
… attributed to atmospheric NH3(g) uptake, mycorrhizal associations, internal remobilisation, and taxon-specific N acquisition strategies, will contribute to the level of d15N depletion. This thesis presents the first extensive survey of highly depleted d15N signatures in terrestrial …