Solar UV radiation in a changing world roles of cryosphere – land – water – atmosphere interfaces in global biogeochemical cycles
Global change influences biogeochemical cycles within and between environmental compartments (i.e., the cryosphere, terrestrial and aquatic ecosystems, and the atmosphere). A major effect of global change on carbon cycling is altered exposure of natural organic matter (NOM) to solar radiation, parti...
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| Otros Autores: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2019sulzberger.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 245 | 1 | 0 | |a Solar UV radiation in a changing world |b roles of cryosphere – land – water – atmosphere interfaces in global biogeochemical cycles |
| 520 | |a Global change influences biogeochemical cycles within and between environmental compartments (i.e., the cryosphere, terrestrial and aquatic ecosystems, and the atmosphere). A major effect of global change on carbon cycling is altered exposure of natural organic matter (NOM) to solar radiation, particularly solar UV radiation. In terrestrial and aquatic ecosystems, NOM is degraded by UV and visible radiation, resulting in the emission of carbon dioxide (CO2) and carbon monoxide, as well as a range of products that can be more easily degraded by microbes (photofacilitation). On land, droughts and land-use change can reduce plant cover causing an increase in exposure of plant litter to solar radiation. The altered transport of soil organic matter from terrestrial to aquatic ecosystems also can enhance exposure of NOM to solar radiation. An increase in emission of CO2 from terrestrial and aquatic ecosystems due to the effects of global warming, such as droughts and thawing of permafrost soils, fuels a positive feedback on global warming. This is also the case for greenhouse gases other than CO2, including methane and nitrous oxide, that are emitted from terrestrial and aquatic ecosystems. These trace gases also have indirect or direct impacts on stratospheric ozone concentrations. The interactive effects of UV radiation and climate change greatly alter the fate of synthetic and biological contaminants. Contaminants are degraded or inactivated by direct and indirect photochemical reactions. The balance between direct and indirect photodegradation or photoinactivation of contaminants is likely to change with future changes in stratospheric ozone, and with changes in runoff of coloured dissolved organic matter due to climate and land-use changes. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a ANIMALS | ||
| 653 | |a ARCTIC REGIONS | ||
| 653 | |a CARBON | ||
| 653 | |a CARBON DIOXIDE | ||
| 653 | |a CLIMATE CHANGE | ||
| 653 | |a ENVIRONMENTAL POLLUTANTS | ||
| 653 | |a FRESH WATER | ||
| 653 | |a GLOBAL WARMING | ||
| 653 | |a GREENHOUSE GASES | ||
| 653 | |a ICE COVER | ||
| 653 | |a OCEANS AND SEAS | ||
| 653 | |a OZONE DEPLETION | ||
| 653 | |a PHOTOLYSIS | ||
| 653 | |a STRATOSPHERIC OZONE | ||
| 653 | |a ULTRAVIOLET RAYS | ||
| 700 | 1 | |a Sulzberger, Barbara |u Swiss Federal Institute of Aquatic Science and Technology. Duebendorf, Switzerland. |9 67574 | |
| 700 | 1 | |a Austin, Amy Theresa |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |9 48259 | |
| 700 | 1 | |a Cory, R. M. |u University of Michigan. Earth and Environmental Science. Michigan, USA. |9 68754 | |
| 700 | 1 | |a Zepp, Richard G. |u United States Environmental Protection Agency. Athens, Georgia, USA. |9 68755 | |
| 700 | 1 | |a Paul, Nigel D. |u Lancaster University. Lancaster Environment Centre. UK. |9 68771 | |
| 773 | |t Photochemical and Photobiological Sciences |g vol.18, no.3 (2019), p.747–774, grafs., il., fot. | ||
| 856 | |f 2019sulzberger |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2019sulzberger.pdf |x ARTI201904 | ||
| 856 | |z LINK AL EDITOR |u https://www.rsc.org | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||