Corridors that connect patches of disjunct habitat may be promising tools for mediating the negative impacts of habitat fragmentation, but little is known about how corridors affect ecological interactions. In eight 12-ha experimental landscapes, we examined how corridors affect the impact of invertebrate, rodent, and avian seed predators on pokeweed, Phytolacca americana. Over 13 months in 200...

The quality and the efficacy of herbal medicine are of great concern especially with the increase in their global use. Medicinal plants of different species or collected from different geographical regions have shown variations in both their contents and pharmacological activities due to the differences in the environmental conditions of the collected sites. In this study, roots of Phytolacca a...

Naglom urbanizacijom, izgradnjom i razvojem poljoprivrede, stanište mnogih biljnih vrsta je smanjeno. Unutar antropogeniziranih travnjaka za koje mnogi žele da izgledaju zeleno homogeno, obično nalazimo različite travne ili travno-djetelinske smjese koje, ako nisu pravilno održavane, ubrzo prerastaju u partere bogate biljnim vrstama određenim oblicima pojavnosti mogu sačuvati bioraznolikost, no...

W e report a series of studies of historical reasoning among professional observers of world politics. The correlational studies demonstrate that experts with strong theoretical commitments to a covering law and cognitive-stylistic preferences for explanatory closure are more likely to reject close-call counterfactuals that imply that “already explained” historical outcomes could easily have ta...

We investigated native structures and mitogenic properties of pokeweed lectin-D isoforms (PL-D1 and -D2) on human peripheral blood lymphocytes along with other isolectins (PL-A to -C). Both native PL-D isoforms appeared to behave as monomers. PL-D2 proliferated the lymphocytes like PL-C, whereas PL-D1 had no mitogenicity. PL-D1 acquired mitogenic activity after trimming of the C-terminal dipept...

When sensitive lymphocytes are cultured with the appropriate antigen, lymphoblasts appear after 24-48 hr of incubation and the number of these increases steadily from the 2nd to the 6th or 7th day. Our problem was to discover, at a cellular level, how this increase takes place; whether it is a massive response of many cells, stepwise recruitment of cells into the lymphoblast class, or simply re...

Sensory analysis studies are critical in the development of quality enhanced crops, and may be an important component in the public acceptance of genetically modified foods. It has recently been established that odor preferences are shared between humans and mice, suggesting that odor exploration behavior in mice may be used to predict the effect of odors in humans. We have previously found tha...