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Soil Metabolite Succession In Vertebrate Decomposition Impacted Soils, Jennifer Kate Baer
Soil Metabolite Succession In Vertebrate Decomposition Impacted Soils, Jennifer Kate Baer
Masters Theses
Vertebrate decomposition results in a pulse of critical nutrients such as nitrogen, carbon, and phosphorus into the environment creating a ‘hotspot’ immediately surrounding the carcass. While many decomposition studies have investigated vertebrate decomposition focused on the carcass itself, fewer studies have focused on the impacts of decomposition products on soils. Gaining a greater understanding of soil processes during decomposition could not only aid in better understanding soil biological activities but could also lead to new insights in nutrient cycling in the environment. The assemblage of soil metabolites, also known as the soil metabolome, exposes not only the breakdown products of …
Manganese Geochemistry And Plant Availability In Response To Agricultural Practices, Ashleigh R. Montgomery
Manganese Geochemistry And Plant Availability In Response To Agricultural Practices, Ashleigh R. Montgomery
Masters Theses
Manganese (Mn) is an essential micronutrient for all organisms. In soils, Mn forms determine availability to plants. Most Mn research has been conducted in forest ecosystems and Mn cycling in agricultural systems is understudied. Therefore, the objective of the experiment is to understand the effect of different agricultural management strategies on Mn cycling and plant availability. First, a greenhouse experiment was conducted to determine the effect of different application rates of two Mn fertilizers (MnSO4 and MnEDTA) on soil geochemical properties and growth of corn (Zea mays) and soybean (Glycine max). The fertilizers were applied to …
The Characterization Of Dynamic Soil Properties And Their Relation To Soil Organic Carbon In East Tennessee Soils, Shannon Marissa Newell
The Characterization Of Dynamic Soil Properties And Their Relation To Soil Organic Carbon In East Tennessee Soils, Shannon Marissa Newell
Masters Theses
Quantifying how dynamic soil properties (DSPs) are affected by different management regimes is essential for understanding how these vital resources can be better managed. The Dewey soil series is a critical soil series in East Tennessee. For this study, the University of Tennessee, Knoxville (UTK) worked alongside the National Cooperative Soil Survey (NCSS) in an effort to better understand the dynamics of the Dewey soil series through a wide range of DSP data. To accomplish this, Dewey soil was collected from five sites which are considered representative of five management regimes: well-managed cropland (WMC), poorly-managed cropland (PMC), well-managed pasture (WMP), …
Making Sense Of Soil Microbiome Complexity For Plant And Ecosystem Function In A Changing World, Kendall K. Beals
Making Sense Of Soil Microbiome Complexity For Plant And Ecosystem Function In A Changing World, Kendall K. Beals
Doctoral Dissertations
Soils contain the highest biodiversity on Earth. While the importance of the soil microbiome for larger-scale ecological phenomena such as nutrient and carbon cycling, plant growth and plant community dynamics is well-established, the fundamental question of the ecological and evolutionary function of this immense belowground microbial diversity for plant and ecosystem function still remains a great challenge in microbial ecology research. The objective of this dissertation is to understand how the importance of soil microbial community composition for plant and ecosystem function and how changes to soil microbial community composition from climate change-induced disturbance events, specifically fire, influence plant and …