Field-based measurement tools to distinguish clonal taxa and estimate biomass: a resource for conservation and restoration.

Two species of clonal [ (native) and (exotic)] hybridize to form the highly invasive, heterotic (high vigor) in North American wetlands leading to increased primary production, litter accumulation, and biodiversity loss. Conservation of has become critical as invasive has overwhelmed wetlands. In the field, taxa identification is difficult due to subtle differences in morphology, and molecular identification is often unfeasible for managers.

Valence-specific laterality effects in vocal emotion: interactions with stimulus type, blocking and sex.

Valence-specific laterality effects have been frequently obtained in facial emotion perception but not in vocal emotion perception. We report a dichotic listening study further examining whether valence-specific laterality effects generalise to vocal emotions. Based on previous literature, we tested whether valence-specific laterality effects were dependent on blocked presentation of the emotion conditions, on the naturalness of the emotional stimuli, or on listener sex.

Uncoupling of omnivore-mediated positive and negative effects on periphyton mats.

The riverine grass shrimp (Palaemonetes paludosus) and eastern mosquitofish (Gambusia holbrooki) consume periphyton and small invertebrates, potentially affecting periphyton through negative effects (i.e., consumption) and/or positive effects such as nutrient regeneration, physical stimulation, and trophic cascades.

Gas-liquid chromatography in the diagnosis of anaerobic infections: a three year experience.

Nearly two thousand clinical samples were examined by direct gas-liquid chromatography over a three year period. Absence of volatile fatty acids (VFAs) in the samples correlated well with negative culture results for anaerobic bacteria. In general the presence of acetic acid alone correlated well with the presence of aerobic organisms, whereas the presence of a mixture of VFAs correlated well with the presence of anaerobic organisms, either alone or in combination with aerobes.