Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia
The destruction of the stratospheric ozone layer due to the anthropogenic production of ozone-depleting substances has led to the increased transmission of harmful ultraviolet-B radiation (280-320 nm) to the surface of the earth. Although exposure to ultraviolet radiation (UVR) is shown to be direct...
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ftunivwollongong:oai:ro.uow.edu.au:theses-3614 2023-05-15T13:43:25+02:00 Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia Kinley, Jeffrey L. 2005-01-01T08:00:00Z application/pdf https://ro.uow.edu.au/theses/2614 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3614&context=theses unknown Department of Biological Sciences https://ro.uow.edu.au/theses/2614 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3614&context=theses University of Wollongong Thesis Collection 1954-2016 thesis 2005 ftunivwollongong 2021-11-08T23:35:37Z The destruction of the stratospheric ozone layer due to the anthropogenic production of ozone-depleting substances has led to the increased transmission of harmful ultraviolet-B radiation (280-320 nm) to the surface of the earth. Although exposure to ultraviolet radiation (UVR) is shown to be directly harmful to numerous marine species, less is known about the impacts of UVR at the community-level. To investigate the ecological effects of ambient solar UVR on macrobenthic assemblages in shallow-water marine environments, field experiments were used near Casey Station, East Antarctica and Wollonging, NSW, Australia. In both locations, experiments were done in the shallow subtidal zone using experimental panels and UV cut-off filters. To allow for maximum levels of UVR, experiments were done during the Austral summer. To test whether current levels of ambient UVR had any effect on macrobenthic assemblages developed in situ, experimental panels were placed under four different irradiation treatments (no UVR, transmits PAR only; no UVB, transmits PAR + UVA; an acrylic procedural control, transmits PAR -i- UVA -i- UVB; and a no-filter control, transmits PAR -I- UVA -I- UVB) and later collected for examination in the laboratory. The responses of the assemblages to the various treatments were determined by measuring diversity, total biomass, and community composition. Experimental panels in Antarctica were deployed between January and February 2001. After 46 d in the field, benthic marine diatoms dominated all the panels in all treatments. Up to 77 species of diatom were identified and recorded. Thesis Antarc* Antarctica East Antarctica University of Wollongong, Australia: Research Online Austral Casey Station ENVELOPE(110.528,110.528,-66.282,-66.282) East Antarctica |
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University of Wollongong, Australia: Research Online |
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ftunivwollongong |
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description |
The destruction of the stratospheric ozone layer due to the anthropogenic production of ozone-depleting substances has led to the increased transmission of harmful ultraviolet-B radiation (280-320 nm) to the surface of the earth. Although exposure to ultraviolet radiation (UVR) is shown to be directly harmful to numerous marine species, less is known about the impacts of UVR at the community-level. To investigate the ecological effects of ambient solar UVR on macrobenthic assemblages in shallow-water marine environments, field experiments were used near Casey Station, East Antarctica and Wollonging, NSW, Australia. In both locations, experiments were done in the shallow subtidal zone using experimental panels and UV cut-off filters. To allow for maximum levels of UVR, experiments were done during the Austral summer. To test whether current levels of ambient UVR had any effect on macrobenthic assemblages developed in situ, experimental panels were placed under four different irradiation treatments (no UVR, transmits PAR only; no UVB, transmits PAR + UVA; an acrylic procedural control, transmits PAR -i- UVA -i- UVB; and a no-filter control, transmits PAR -I- UVA -I- UVB) and later collected for examination in the laboratory. The responses of the assemblages to the various treatments were determined by measuring diversity, total biomass, and community composition. Experimental panels in Antarctica were deployed between January and February 2001. After 46 d in the field, benthic marine diatoms dominated all the panels in all treatments. Up to 77 species of diatom were identified and recorded. |
format |
Thesis |
author |
Kinley, Jeffrey L. |
spellingShingle |
Kinley, Jeffrey L. Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia |
author_facet |
Kinley, Jeffrey L. |
author_sort |
Kinley, Jeffrey L. |
title |
Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia |
title_short |
Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia |
title_full |
Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia |
title_fullStr |
Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia |
title_full_unstemmed |
Community-level effects of solar ultraviolet radiation on benthic marine assemblages in Antarctica and Australia |
title_sort |
community-level effects of solar ultraviolet radiation on benthic marine assemblages in antarctica and australia |
publisher |
Department of Biological Sciences |
publishDate |
2005 |
url |
https://ro.uow.edu.au/theses/2614 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3614&context=theses |
long_lat |
ENVELOPE(110.528,110.528,-66.282,-66.282) |
geographic |
Austral Casey Station East Antarctica |
geographic_facet |
Austral Casey Station East Antarctica |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_source |
University of Wollongong Thesis Collection 1954-2016 |
op_relation |
https://ro.uow.edu.au/theses/2614 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3614&context=theses |
_version_ |
1766188857436405760 |