منابع مشابه
Limnol. Oceanogr., 44(2), 1999, 470–473
In contrast to earlier studies (Bothwell et al. 1993, 1994; DeNicola and Hoagland 1996; Kiffney et al. 1997b), Hill et al. (1997) recently concluded that there was no effect of ambient solar ultraviolet (UV) radiation on periphyton and grazers in a small Tennessee stream. These conclusions were based on the appearance that grazing pressure by pleurocerid snails (Elimia clavaeformis) controlled ...
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...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2006
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2005.11.011