Quality of UVR exposure for different biological systems along a latitudinal gradient

The exposure of organisms to ultraviolet radiation (UVR) is characterized by the climatology (annual cycle) and the variance (anomalies) of biologically-weighted irradiances at eight geographical locations in austral South America, from 1995-2002. The net effect of UVR on biological systems is a res...

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Autores principales:	Vernet, M., Diaz, S.B., Fuenzalida, H.A., Camilion, C., Booth, C.R., Cabrera, S., Casiccia, C., Deferrari, G., Lovengreen, C., Paladini, A., Pedroni, J., Rosales, A., Zagarese, H.E.
Formato:	JOUR
Materias:	DNA aerosol albedo article biology circannual rhythm climate change cloud evolutionary adaptation latitude nonhuman ozone depletion ozone layer photosynthesis phytoplankton priority journal radiation exposure radiation injury spectral sensitivity stratosphere time ultraviolet radiation DNA Damage Meteorology Photosynthesis Phytoplankton South America Ultraviolet Rays
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_1474905X_v8_n9_p1329_Vernet
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_1474905X_v8_n9_p1329_Vernet
record_format	dspace
spelling	todo:paper_1474905X_v8_n9_p1329_Vernet2023-10-03T16:18:35Z Quality of UVR exposure for different biological systems along a latitudinal gradient Vernet, M. Diaz, S.B. Fuenzalida, H.A. Camilion, C. Booth, C.R. Cabrera, S. Casiccia, C. Deferrari, G. Lovengreen, C. Paladini, A. Pedroni, J. Rosales, A. Zagarese, H.E. DNA aerosol albedo article biology circannual rhythm climate change cloud evolutionary adaptation latitude nonhuman ozone depletion ozone layer photosynthesis phytoplankton priority journal radiation exposure radiation injury spectral sensitivity stratosphere time ultraviolet radiation DNA Damage Meteorology Photosynthesis Phytoplankton South America Ultraviolet Rays The exposure of organisms to ultraviolet radiation (UVR) is characterized by the climatology (annual cycle) and the variance (anomalies) of biologically-weighted irradiances at eight geographical locations in austral South America, from 1995-2002. The net effect of UVR on biological systems is a result of the balance of damage and repair which depends on intensity and duration of irradiance and is modulated by its variability. The emphasis in this study is on day-to-day variability, a time scale of importance to adaptive strategies that counteract UVR damage. The irradiances were weighted with DNA- and phytoplankton photosynthesis-action spectra. Low latitude sites show high average UVR. For all sites, the frequency of days with above average irradiances is higher than below average irradiances. Persistence in anomalies is generally low (≤0.36 autocorrelation coefficient), but higher for DNA- than phytoplankton photosynthesis-weighted irradiances due to their higher correspondence to stratospheric ozone. Cloudiness and other factors with small wavelength dependence (e.g. aerosols and albedo) are highly correlated with UVR anomalies at low latitudes (24-33° S); ozone correlates higher at high latitudes (42-54.5° S). Our results show that organisms in this region deal with several days of excess radiation and fewer, shorter and more intense periods of lower than average radiation. Relief from UVR stress (or higher frequency of days below the climatology) is more prevalent at high latitudes (54.5° S). Thus, lower latitudes are more stressful to organisms not only because of higher average UVR irradiance but also for the higher frequency of days above the climatology. © 2009 The Royal Society of Chemistry and Owner Societies. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1474905X_v8_n9_p1329_Vernet
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	DNA aerosol albedo article biology circannual rhythm climate change cloud evolutionary adaptation latitude nonhuman ozone depletion ozone layer photosynthesis phytoplankton priority journal radiation exposure radiation injury spectral sensitivity stratosphere time ultraviolet radiation DNA Damage Meteorology Photosynthesis Phytoplankton South America Ultraviolet Rays
spellingShingle	DNA aerosol albedo article biology circannual rhythm climate change cloud evolutionary adaptation latitude nonhuman ozone depletion ozone layer photosynthesis phytoplankton priority journal radiation exposure radiation injury spectral sensitivity stratosphere time ultraviolet radiation DNA Damage Meteorology Photosynthesis Phytoplankton South America Ultraviolet Rays Vernet, M. Diaz, S.B. Fuenzalida, H.A. Camilion, C. Booth, C.R. Cabrera, S. Casiccia, C. Deferrari, G. Lovengreen, C. Paladini, A. Pedroni, J. Rosales, A. Zagarese, H.E. Quality of UVR exposure for different biological systems along a latitudinal gradient
topic_facet	DNA aerosol albedo article biology circannual rhythm climate change cloud evolutionary adaptation latitude nonhuman ozone depletion ozone layer photosynthesis phytoplankton priority journal radiation exposure radiation injury spectral sensitivity stratosphere time ultraviolet radiation DNA Damage Meteorology Photosynthesis Phytoplankton South America Ultraviolet Rays
description	The exposure of organisms to ultraviolet radiation (UVR) is characterized by the climatology (annual cycle) and the variance (anomalies) of biologically-weighted irradiances at eight geographical locations in austral South America, from 1995-2002. The net effect of UVR on biological systems is a result of the balance of damage and repair which depends on intensity and duration of irradiance and is modulated by its variability. The emphasis in this study is on day-to-day variability, a time scale of importance to adaptive strategies that counteract UVR damage. The irradiances were weighted with DNA- and phytoplankton photosynthesis-action spectra. Low latitude sites show high average UVR. For all sites, the frequency of days with above average irradiances is higher than below average irradiances. Persistence in anomalies is generally low (≤0.36 autocorrelation coefficient), but higher for DNA- than phytoplankton photosynthesis-weighted irradiances due to their higher correspondence to stratospheric ozone. Cloudiness and other factors with small wavelength dependence (e.g. aerosols and albedo) are highly correlated with UVR anomalies at low latitudes (24-33° S); ozone correlates higher at high latitudes (42-54.5° S). Our results show that organisms in this region deal with several days of excess radiation and fewer, shorter and more intense periods of lower than average radiation. Relief from UVR stress (or higher frequency of days below the climatology) is more prevalent at high latitudes (54.5° S). Thus, lower latitudes are more stressful to organisms not only because of higher average UVR irradiance but also for the higher frequency of days above the climatology. © 2009 The Royal Society of Chemistry and Owner Societies.
format	JOUR
author	Vernet, M. Diaz, S.B. Fuenzalida, H.A. Camilion, C. Booth, C.R. Cabrera, S. Casiccia, C. Deferrari, G. Lovengreen, C. Paladini, A. Pedroni, J. Rosales, A. Zagarese, H.E.
author_facet	Vernet, M. Diaz, S.B. Fuenzalida, H.A. Camilion, C. Booth, C.R. Cabrera, S. Casiccia, C. Deferrari, G. Lovengreen, C. Paladini, A. Pedroni, J. Rosales, A. Zagarese, H.E.
author_sort	Vernet, M.
title	Quality of UVR exposure for different biological systems along a latitudinal gradient
title_short	Quality of UVR exposure for different biological systems along a latitudinal gradient
title_full	Quality of UVR exposure for different biological systems along a latitudinal gradient
title_fullStr	Quality of UVR exposure for different biological systems along a latitudinal gradient
title_full_unstemmed	Quality of UVR exposure for different biological systems along a latitudinal gradient
title_sort	quality of uvr exposure for different biological systems along a latitudinal gradient
url	http://hdl.handle.net/20.500.12110/paper_1474905X_v8_n9_p1329_Vernet
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_version_	1807315957238988800

Quality of UVR exposure for different biological systems along a latitudinal gradient

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