UV-B and Biosphere

I. UV-B and aquatic ecosystems.- Penetration and effects of solar UV-B on phytoplankton and macroalgae.- UV damage to plant life in a photobiologically dynamic environment: the case of marine phytoplankton.- Effects of acute and chronic UV-B exposure on a green alga: a continuous culture study using a computer-controlled dynamic light regime.- Role of ultraviolet-B radiation on bacterioplankton and the availability of dissolved organic matter.- Physiological and structural changes in the chloroplast of the green alga Micrasterias denticulata induced by UV-B simulation.- II. UV-B and terrestrial ecosystems: general and methodological aspects.- Uses of biological spectral weighting functions and the need of scaling for the ozone reduction problem.- Outdoor supplementation systems for studies of the effects of increased UV-B radiation.- In assessing biological UV-B effects, natural fluctuations of solar radiation should be taken into account.- III. UV-B and physiology of terrestrial plants.- Beneficial effects of enhanced UV-B radiation under field conditions: improvement of needle water relations and survival capacity of Pinus pinea L. seedlings during the dry Mediterranean summer.- Ultraviolet-B radiation effects on the Mediterranean ruderal Dittrichia viscosa.- Effects of solar UV-B radiation on growth, flowering and yield of central and southern European bush bean cultivars (Phaseolus vulgaris L.).- Morphological and physiological responses of bean plants to supplemental UV radiation in a Mediterranean climate.- The effect of enhanced ultraviolet-B radiation on germination and seedling development of plant species occurring in a dune grassland ecosystem.- Leaf thickness and UV-B absorbing pigments of plants in relation to an elevational gradient along the Blue Mountains, Jamaica.- Reaction of savanna plants from Botswana on UV-B radiation.- The impact of elevated UV-B (280–320 nm) radiation levels on the reproduction biology of a highland and a lowland population of Silene vulgaris.- IV. Interactions of UV-B with environmental factors.- Effects of UV-B radiation on terrestrial plants and ecosystems: interaction with CO2 enrichment.- Effects of increasing UV-B radiation and atmospheric CO2 on photosynthesis and growth: implications for terrestrial ecosystems.- The combined effects of CO2 concentration and enhanced UV-B radiation on faba bean 3. Leaf optical properties, pigments, stomatal index and epidermal cell density.- Effects of solar ultraviolet-B radiation, temperature and CO2 on growth and physiology of sunflower and maize seedlings.- Combined effects of enhanced UV-B radiation and nitrogen deficiency on the growth, composition and photosynthesis of rye (Secale cereal).- V. UV-B and terrestrial ecosystems.- Effects of enhanced UV-B radiation and elevated carbon dioxide concentrations on a sub-arctic forest heath ecosystem.- The effects of UV-B radiation on European heathland species.- Differential effects of elevated ultraviolet-B radiation on plant species of a dune grassland ecosystem.- Stratospheric ozone reduction and ecosystem processes: enhanced UV-B radiation affects chemical quality and decomposition of leaves of the dune grassland species Calamagrostis epigeios.- The role of interactions between trophic levels in determining the effects of UV-B on terrestrial ecosystems.- Species Index.