UV-B and Biosphere

Front Matter....Pages i-1
Front Matter....Pages 3-3
Penetration and effects of solar UV-B on phytoplankton and macroalgae....Pages 4-13
UV damage to plant life in a photobiologically dynamic environment: the case of marine phytoplankton....Pages 16-25
Effects of acute and chronic UV-B exposure on a green alga: a continuous culture study using a computer-controlled dynamic light regime....Pages 28-40
Role of ultraviolet-B radiation on bacterioplankton and the availability of dissolved organic matter....Pages 42-51
Physiological and structural changes in the chloroplast of the green alga Micrasterias denticulata induced by UV-B simulation....Pages 54-64
Front Matter....Pages 65-65
Uses of biological spectral weighting functions and the need of scaling for the ozone reduction problem....Pages 66-76
Outdoor supplementation systems for studies of the effects of increased UV-B radiation....Pages 78-92
In assessing biological UV-B effects, natural fluctuations of solar radiation should be taken into account....Pages 93-97
Front Matter....Pages 99-99
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....Pages 100-108
Ultraviolet-B radiation effects on the Mediterranean ruderal Dittrichia viscosa....Pages 109-112
Effects of solar UV-B radiation on growth, flowering and yield of central and southern European bush bean cultivars ( Phaseolus vulgaris L.)....Pages 114-125
Morphological and physiological responses of bean plants to supplemental UV radiation in a Mediterranean climate....Pages 127-136
The effect of enhanced ultraviolet-B radiation on germination and seedling development of plant species occurring in a dune grassland ecosystem....Pages 138-147
Leaf thickness and UV-B absorbing pigments of plants in relation to an elevational gradient along the Blue Mountains, Jamaica....Pages 150-159
Reaction of savanna plants from Botswana on UV-B radiation....Pages 162-170
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....Pages 172-179
Front Matter....Pages 181-181
Effects of UV-B radiation on terrestrial plants and ecosystems: interaction with CO 2 enrichment....Pages 182-191
Effects of increasing UV-B radiation and atmospheric CO 2 on photosynthesis and growth: implications for terrestrial ecosystems....Pages 194-206
The combined effects of CO 2 concentration and enhanced UV-B radiation on faba bean. 3. Leaf optical properties, pigments, stomatal index and epidermal cell density....Pages 208-222
Effects of solar ultraviolet-B radiation, temperature and CO 2 on growth and physiology of sunflower and maize seedlings....Pages 224-234
Front Matter....Pages 181-181
Combined effects of enhanced UV-B radiation and nitrogen deficiency on the growth, composition and photosynthesis of rye ( Secale cereale )....Pages 235-240
Front Matter....Pages 241-241
Effects of enhanced UV-B radiation and elevated carbon dioxide concentrations on a sub-arctic forest heath ecosystem....Pages 242-249
The effects of UV-B radiation on European heathland species....Pages 252-264
Differential effects of elevated ultraviolet-B radiation on plant species of a dune grassland ecosystem....Pages 266-281
Stratospheric ozone reduction and ecosystem processes: enhanced UV-B radiation affects chemical quality and decomposition of leaves of the dune grassland species Calamagrostis epigeios....Pages 284-294
The role of interactions between trophic levels in determining the effects of UV-B on terrestrial ecosystems....Pages 296-308
Back Matter....Pages 309-321