Crescimento de mudas de andiroba (Carapa guianensis) em exposição solar plena e à sombra.
Edição dos resumos do XLV Congresso Brasileiro de Olericultura.
Vitamin D Effective Ultraviolet Wavelengths Due to Scattering in Shade
Solar UVB radiation (280-320 nm) is an initiator of Vitamin D[3] production in the human skin. While numerous studies have been conducted in relation to the biological impact of UV exposure in full sun, less research has investigated the irradiances in shade. The purpose of this study was to determine the levels of UV radiation in relation to Vitam...
Thuja plicata exclusion in ectomycorrhiza-dominated forests: testing the role of inoculum potential of arbuscular mycorr...
Published in Oecologia
The ability of trees dependent on arbuscular mycorrhizal (AM) fungi to establish in ectomycorrhizal forests is unknown. On northern Vancouver Island, Canada, there are sharp boundaries between mixed red cedar (Thuja plicata)-hemlock (Tsuga heterophylla) (CH) stands, and stands of hemlock and amabilis fir (Abies amabilis) (HA). We tested differences...
Growth and yield of coffee plants in agroforestry and monoculture systems in Minas Gerais, Brazil
Published in Agroforestry Systems
This research compared coffee plants (Coffea arabica L.) grown in an agroforestry and monoculture systems. Data were collected during two years, on vegetative growth, reproductive development, nutritional status and yield of coffee, besides monitoring air temperature and the tree growth. All trees in agroforestry system increased in growth, resulti...
Hardwood silvopasture management in North America
Published in Agroforestry Systems
Hardwood silvopasture management has great potential throughout the Central Hardwood Region in the United States, but has been little utilized due to the lack of available information on its application. However, more than one-third of farm woodlands within the region are being grazed without the benefit of the application of silvopasture principle...
Butterfly community composition and conservation in and around a primary woodland of Mount Fuji, central Japan
Published in Biodiversity & Conservation
A study was conducted in and around the Aokigahara primary woodland of Mount Fuji, central Japan, to clarify butterfly community structure along the environmental gradients of human disturbance, shade, and plant species richness, with a view to formulating conservation strategies for the community. The composition and abundance of butterfly species...
Growth and biomass allocation of shrub and grass seedlings in response to predicted changes in precipitation seasonality...
Published in Plant Ecology
Anthropogenic emissions contribute to an annual 0.5% increase in atmospheric CO2. As global CO2 levels increase, regional precipitation patterns will likely be altered. Our primary objective was to determine whether a reduction in summer precipitation or an increase in winter/spring precipitation, predicted by global climate change models, will fav...
Crown illumination limits the population growth rate of a neotropical understorey palm (Geonoma macrostachys, Arecaceae)...
Published in Plant Ecology
The importance of light as a limiting factor for growth and reproductionin tropical understorey plants is well known, but the population-levelconsequences of light limitation remain little explored. Here, I usedemographicmodelling to examine if the effect of canopy gaps on individual-levelperformance in a tropical understorey palm translates into a...
Effects of partial shading of the potato plant on photosynthesis of treated leaves, leaf area expansion and allocation o...
Solar Ultraviolet Exposures At Ground Level In Tree Shade During Summer In South East Queensland
Data are presented on the effect of the tree canopy transmittance in the visible waveband (VT), canopy width, height and height of the start of the tree canopy (CH) on the solar UV in tree shade on a horizontal plane at ground level during a Southern Hemisphere summer. Of these factors, the VT and CH have an influence on the UV irradiances in the t...
