Ambient levels of UV radiation
نویسندگان
چکیده
منابع مشابه
Ambient UV-B radiation causes deformities in amphibian embryos.
There has been a great deal of recent attention on the suspected increase in amphibian deformities. However, most reports of amphibian deformities have been anecdotal, and no experiments in the field under natural conditions have been performed to investigate this phenomenon. Under laboratory conditions, a variety of agents can induce deformities in amphibians. We investigated one of these agen...
متن کاملGrowth and production of buckwheat (Fagopyrum esculentum) treated with reduced, ambient, and enhanced UV-B radiation.
The effect of enhanced UV-B radiation on buckwheat (Fagopyrum esculentum Moench. variety 'Darja'), an important high elevation crop, was studied in order to estimate its vulnerability in changing UV-B environment. Plants were grown in outdoor experiments from July to October under reduced and ambient UV-B levels, and an UV-B level simulating 17% ozone depletion in Ljubljana. During the developm...
متن کاملThe effects of ambient solar UV radiation on alkaloid production by Erythroxylum novogranatense var. novogranatense.
Truxillines are alkaloids produced by Erythroxylum species and are thought to be derived from the UV-driven dimerization of cinnamoylcocaines. This study was conducted to determine the effects of ambient UV radiation on the production of truxillines in Erythroxylum novogranatense var. novogranatense. Field plants were grown under shelters covered with plastic filters that were transparent to UV...
متن کاملNo effects of ambient UV radiation detected in periphyton and grazers
The vulnerability of periphyton and grazers to current and future levels of ultraviolet radiation (UV) has important ramifications for energy flow in shallow waters. We reduced ambient UV levels in a Tennessee stream with UVopaque Plexiglas suspended over the stream and compared periphyton under these Plexiglas filters to periphyton under UV-transparent polyvinylidene film. The experiments were...
متن کاملAmbient UV-B radiation decreases photosynthesis in high arctic Vaccinium uliginosum.
An UV-B-exclusion experiment was established in high arctic Zackenberg, Northeast Greenland, to investigate the possible effects of ambient UV-B on plant performance. During almost a whole growing season, canopy gas exchange and Chl fluorescence were measured on Vaccinium uliginosum (bog blueberry). Leaf area, biomass, carbon, nitrogen and UV-B-absorbing compounds were determined from a late se...
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ژورنال
عنوان ژورنال: BMC Plant Biology
سال: 2005
ISSN: 1471-2229
DOI: 10.1186/1471-2229-5-s1-s5