Ultraviolet Reflections: Life Under a Thinning Ozone Layer examines the effects of increasing UV radiation on people, plants and animals. It takes the reader on.
Table of contents
- Ultraviolet Reflections : Life under a Thinning Ozone Layer by Annika Nilsson (1996, Paperback)
- Health and Environmental Effects of Ozone Layer Depletion
- Ultraviolet Reflections: Life Under a Thinning Ozone Layer - IOPscience
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Ultraviolet Reflections : Life under a Thinning Ozone Layer by Annika Nilsson (1996, Paperback)
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Health and Environmental Effects of Ozone Layer Depletion
Alibris has millions of books at amazingly low prices. These changes can have important implications for plant competitive balance, herbivory, plant diseases, and biogeochemical cycles. Phytoplankton form the foundation of aquatic food webs. Phytoplankton productivity is limited to the euphotic zone, the upper layer of the water column in which there is sufficient sunlight to support net productivity. Exposure to solar UVB radiation has been shown to affect both orientation and motility in phytoplankton, resulting in reduced survival rates for these organisms.
Scientists have demonstrated a direct reduction in phytoplankton production due to ozone depletion-related increases in UVB. UVB radiation has been found to cause damage to early developmental stages of fish, shrimp, crab, amphibians, and other marine animals. The most severe effects are decreased reproductive capacity and impaired larval development.
Small increases in UVB exposure could result in population reductions for small marine organisms with implications for the whole marine food chain.
Ultraviolet Reflections: Life Under a Thinning Ozone Layer - IOPscience
Increases in UVB radiation could affect terrestrial and aquatic biogeochemical cycles, thus altering both sources and sinks of greenhouse and chemically important trace gases e. These potential changes would contribute to biosphere-atmosphere feedbacks that mitigate or amplify the atmospheric concentrations of these gases. Synthetic polymers, naturally occurring biopolymers, as well as some other materials of commercial interest are adversely affected by UVB radiation. Today's materials are somewhat protected from UVB by special additives.
Other global issues such as the Greenhouse effect and atmospheric pollution are then explored. Further health issues relating to immune response and the eye are then discussed. The health messages from these chapters are presented in a 12 point plan of advice to reduce sun exposure. Being only four pages long, this chapter is perhaps the one for further scientific development. It deals with the aspects of eye disease in grazing animals, the declining population of some frog species and the effects of coral bleaching.
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The early reports that some Patagonian sheep were blinded by the effects of ozone depletion have been shown to be false and, although increased UVR levels may be implicated in some animal processes, other factors, such as global warming, may also play a role. Finally, the pros and cons of the debate are summarised. Many of these have been moderated as new information and scientific controversy have surfaced and very few effects of increased UVR due to ozone depletion have been satisfactorily quantified.
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Non-melanoma skin cancer might be the exception, although heavily influenced by people's behaviour in respect to sun exposure. Much of the action towards research and policy in this area is based on a precautionary principle and the continuing integrity of the Montreal Protocol governing the phase-out of ozone depleting substances. The final sentence reflects this: