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By D.-P. Häder (auth.), J. Rozema, W. W. C. Gieskes, S. C. Van De Geijn, C. Nolan, H. De Boois (eds.)

ISBN-10: 9401064113

ISBN-13: 9789401064118

ISBN-10: 9401157189

ISBN-13: 9789401157186

Current phase-out schedules of the construction and emission of CFC's point out that chlorine loading within the stratosphere isn't but at its greatest. The restoration of stratospheric ozone is envisioned to take time and ele­ vated degrees of UV-B radiation are anticipated to ensue all through many of the subsequent century. regardless of a number of physiological reviews of UV-B results on crops, frequently grown in weather chambers, wisdom of UV-B results on organisms and methods in normal aquatic or terrestrial ecosystems is bad. at present it seems that UV-B radiation isn't just an environmental rigidity' issue to crops. In a variety of methods, that are incompletely understood, UV-B impacts a variety of physiological and ecological methods. Remarkably, fresh box reports point out that better UV-B doesn't markedly impact photosynthesis, development and first construction, yet fairly interferes with plant morphogenesis and plant and atmosphere features with regards to the secondary metabolism. This designated factor and ebook UV-B and Biosphere is an try to conceal this diversity and to document the growth made within the study of ecological results of better sunlight UV-B radiation. The papers during this booklet shaped the foundation of a world workshop entitled' UV-B and Biosphere' , December 15-18, 1995, in Wageningen, The Netherlands. a primary response of Hans de Boois at the variety of papers and classes scheduled from Friday to Sunday morning used to be: a ways too many.

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Optical efficiency factors of some phytoplankters. Limnol. Oceanogr. 28(5): 816-832. Burna, A. G. , Zemmelink, H. , Sjollema, K. A. & Gieskes, W. W. C. 1994. Effect ofUV-B on cell characteristics of the marine diatom Cyclotelia sp. Proc. Eur. Symp. on Environm. UVeffects. 39 Burna, A. G. , Van Hannen, E. , Veldhuis, M. 1. W. & Gieskes, W. W. C. 1995. Monitoring ultraviolet-B-induced DNA damage in individual diatom cells by immunofluorescent thymine dimer detection. J. Phycol. 31: 314-321. Calkins, J.

C. Gieskes, S. C. van de Geijn, C. Nolan and H. de Boois (eds), UV-B and Biosphere. 43 ©1997 Kluwer Academic Publishers. Role of ultraviolet-B radiation on bacterioplankton and the availability of dissolved organic matter Gerhard J. Herndl, Albert Brugger, Silvia Hager, Edith Kaiser, Ingrid Obernosterer, Bettina Reitner & Doris Slezak Dept. 0/ Marine Biology, Institute o/Zoology, University o/Vienna, Althanstr. 14, A-1090 Vienna, Austria Key words: Bacterial utilization, Bacterioplankton, Dissolved organic matter (DOM) , Radiation, Ultraviolet-B (UV-B) Abstract Attenuation of ultraviolet (UV)-radiation into the water column is highly correlated with the concentration of the dissolved organic matter (DOM).

Post, A. E & Van Hes, U. M. 1987. A system for measuring phytoplankton photosynthesis in a defined light field with an oxygen electrode. J. Plankton Res. 9: 607-612. Eloff, 1. , Steinitz, Y. & Shilo, M. 1976. Photooxidation of cyanobacteria in natural conditions. Appl. Environ. Microbiol. 31(1): 119-126. Gala, W. R. & Giesy, J. P. 1991. Effects of ultraviolet radiation on the primary production of natural phytoplankton assemblages in Lake Mitchigan. Ecotox. Environ. Safety 22: 345-361. Garcia-Pichel, E & Castenholz, R.

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UV-B and Biosphere by D.-P. Häder (auth.), J. Rozema, W. W. C. Gieskes, S. C. Van De Geijn, C. Nolan, H. De Boois (eds.)

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