To evaluate the population variation, individual plasticity, and local adaptability of Solidago canadensis in response to shade treatment, we conducted a common pots experiment with a total of 150 ramets (5 genets, 15 populations, and 2 treatments) subjected to both control (natural light) and shady treatment (10% of natural light). Shade treatment significantly reduced growth and content of de...

Several specimens belonging to the genus Pseudocercospora were collected from different localities of Mazandaran province (N Iran) during the 2011–12. All specimens were microscopically studied and identified. As the result Pseudocercospora abeliae (on Abelia grandiflora), P.rhamnaceicola (on Paliurus spina-christi) and P.sordida (on Campsis grandiflora) are newly recorded for Iran. Furthermore...

Recent analyses of radial growth rates in southern commercial forests have shown that current rates are lower than past rates when compared diameter class by diameter class. These results have been interpreted as an indication that the growth rate of the forest is declining. In this paper, growth rates of forest populations in Alabama are studied. Basal area growth (a function of both radius an...

Understory plants are important components of forest ecosystem productivity and diversity. Compared to biomass models of overstory canopy trees, few are available for understory saplings and shrubs and therefore their roles in estimation of forest carbon pools are often ignored. In this study, we harvested 24 understory species including 4 saplings, 9 tree-like shrubs and 11 typical shrubs in c...