Both plant diversity and vertebrate herbivores can impact plant fitness and ecosystem functioning, however their interactions have not been explicitly tested. We manipulated plant genotypic diversity of the native plant Oenothera biennis and monitored its survivorship and lifetime fitness with and without one of its major vertebrate consumers, white-tailed deer Odocoileus virginianus. Intense b...

Interest in oilseeds and oilseed crop production has recently been heightened by the growing potential for biofuels. Traditional oil seed crops, such as sunflower (Helianthus annuus L., Asteraceae), flax (Linum usitatissimum L., Linaceae), and more recently canola (Brassica napus L., Brassicaceae) have become crops of major importance in the region. The key to their production success is multi-...

Midday depression of photosynthesis has important consequences for ecosystem carbon exchange. Recent studies of forest trees have demonstrated that latent reduction of photosynthetic capacity can begin in the early morning, preceding the midday depression. We investigated whether such early morning reduction also occurs in an herbaceous species, Oenothera biennis. Diurnal changes of the photosy...

The dominant orthodox biological concept of schizophrenia is that it is somehow related to an excess of dopamine activity in critical areas of the brain. The outstanding pieces of evidence in favor of this concept are that all the commonly used anti-schizophrenic drugs are blockers of dopamine receptors and that two groups have now reported that certain regions of the brain in schizophrenics ex...

OBJECTIVE To quantify patterns of Natural Health Product (NHP) use in Canada. METHODS The Food Habits of Canadians surveyed 1,543 Canadian adults using a 24-hour recall to record dietary supplements. Prevalence of use by user profile was examined. RESULTS Forty-six percent of women and 33% of men reported taking at least one Natural Health Product with a mean of 2.3 among users. The highest...