To quantify the rate of oxidation of tritium gas (referred to as HT) to tritiated water in the environment, various woody and herbaceous plant leaves and roots, mosses and lichens taken from a forest and fields in Ibaraki prefecture, and a forest in Toki, Gifu prefecture, were investigated as to their ability to oxidize atmospheric HT in in vitro experiments. The HT oxidation activity in vegeta...

We assessed the biomass production, biomass allocation patterns, height growth, and root airspace of seventeen wetland plant taxa, including two potentially invasive species, grown under high nutrient conditions and subjected to four hydrologic regimes: constant drawdown, cyclic flooding and drawdown, cyclic flooding and drought, and constant flooding for the duration of the experiment ( 10 wee...

Acquisition and allocation of resources in response to elevated CO2 and nitrogen fertilization in two perennial C3 grasses Hannah Abigail Kinmonth-Schultz Chairperson of the Supervisory Committee: Assistant Professor Soo-Hyung Kim College of Forest Resources Atmospheric concentrations of carbon dioxide (CO2) have increased over the last century, likely due to human activity, and will likely con...

A continuous flow filtration system was designed to identify and quantify the removal mechanisms of Cyanobacteria (Microcystis aeruginosa) by hydroponic biofilters Phalaris arundinacea compared synthetic filters. The units were continuously fed under plug-flow conditions with Microcystis grown in photobioreactors. cells decreased at two rates studied (1.2 ± 0.2 54 ± 3 cm3 minˉ1) results suggest...

Evolutionary processes such as migration, genetic drift, and natural selection are thought to play a prominent role in species invasions into novel environments. However, few empirical studies have explored the mechanistic basis of invasion in an evolutionary framework. One promising tool for inferring evolutionarily important changes in introduced populations is the genetic variance-covariance...