Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters
With depleted ozone levels and the possibility that climate change might lower dissolved organic matter (DOM) concentrations, the risk of exposure of fresh waters in Canada to ultraviolet B (UV-B) was evaluated. First, the distribution of a UV-B-sensitive zooplankton genus, Daphnia, was examined as...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2004
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/f04-165 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-165 |
id |
crcansciencepubl:10.1139/f04-165 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/f04-165 2023-12-17T10:23:48+01:00 Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters Molot, L A Keller, W Leavitt, P R Robarts, R D Waiser, M J Arts, M T Clair, T A Pienitz, R Yan, N D McNicol, D K Prairie, Y T Dillon, P J Macrae, M Bello, R Nordin, R N Curtis, P J Smol, J P Douglas, M SV 2004 http://dx.doi.org/10.1139/f04-165 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-165 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 12, page 2511-2521 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2004 crcansciencepubl https://doi.org/10.1139/f04-165 2023-11-19T13:39:28Z With depleted ozone levels and the possibility that climate change might lower dissolved organic matter (DOM) concentrations, the risk of exposure of fresh waters in Canada to ultraviolet B (UV-B) was evaluated. First, the distribution of a UV-B-sensitive zooplankton genus, Daphnia, was examined as a function of DOM concentration and maximum depth (Z max ) in 258 systems. Distribution was not restricted by UV-B, although very clear, shallow systems are underrepresented. Secondly, the depth at which 1% of surface radiance at 320 nm occurs (Z 320,1% ) was compared with Z max in over 1000 aquatic systems in 15 ecozones to determine the proportions of optically clear systems (Z max ≤ Z 320,1% ) and systems that may become clear (i.e., are "at risk") should DOM decrease by 50%. South of the treeline, <6% of systems were clear, with the exception of two ecozones with 10%20%. The proportion of systems at risk was 0% in most regions, with 5%9% in four regions. DOM levels appear adequate to prevent extirpation of sensitive taxa like Daphnia through direct exposure to UV-B in most regions south of the treeline. However, optically clear and at-risk ponds were much more common in the three Artic ecozones, especially the Northern Arctic and Arctic Cordillera. Article in Journal/Newspaper Arctic Cordillera Arctic Climate change Zooplankton Canadian Science Publishing (via Crossref) Arctic Canada Canadian Journal of Fisheries and Aquatic Sciences 61 12 2511 2521 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Molot, L A Keller, W Leavitt, P R Robarts, R D Waiser, M J Arts, M T Clair, T A Pienitz, R Yan, N D McNicol, D K Prairie, Y T Dillon, P J Macrae, M Bello, R Nordin, R N Curtis, P J Smol, J P Douglas, M SV Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
With depleted ozone levels and the possibility that climate change might lower dissolved organic matter (DOM) concentrations, the risk of exposure of fresh waters in Canada to ultraviolet B (UV-B) was evaluated. First, the distribution of a UV-B-sensitive zooplankton genus, Daphnia, was examined as a function of DOM concentration and maximum depth (Z max ) in 258 systems. Distribution was not restricted by UV-B, although very clear, shallow systems are underrepresented. Secondly, the depth at which 1% of surface radiance at 320 nm occurs (Z 320,1% ) was compared with Z max in over 1000 aquatic systems in 15 ecozones to determine the proportions of optically clear systems (Z max ≤ Z 320,1% ) and systems that may become clear (i.e., are "at risk") should DOM decrease by 50%. South of the treeline, <6% of systems were clear, with the exception of two ecozones with 10%20%. The proportion of systems at risk was 0% in most regions, with 5%9% in four regions. DOM levels appear adequate to prevent extirpation of sensitive taxa like Daphnia through direct exposure to UV-B in most regions south of the treeline. However, optically clear and at-risk ponds were much more common in the three Artic ecozones, especially the Northern Arctic and Arctic Cordillera. |
format |
Article in Journal/Newspaper |
author |
Molot, L A Keller, W Leavitt, P R Robarts, R D Waiser, M J Arts, M T Clair, T A Pienitz, R Yan, N D McNicol, D K Prairie, Y T Dillon, P J Macrae, M Bello, R Nordin, R N Curtis, P J Smol, J P Douglas, M SV |
author_facet |
Molot, L A Keller, W Leavitt, P R Robarts, R D Waiser, M J Arts, M T Clair, T A Pienitz, R Yan, N D McNicol, D K Prairie, Y T Dillon, P J Macrae, M Bello, R Nordin, R N Curtis, P J Smol, J P Douglas, M SV |
author_sort |
Molot, L A |
title |
Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters |
title_short |
Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters |
title_full |
Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters |
title_fullStr |
Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters |
title_full_unstemmed |
Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters |
title_sort |
risk analysis of dissolved organic matter-mediated ultraviolet b exposure in canadian inland waters |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/f04-165 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-165 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic Cordillera Arctic Climate change Zooplankton |
genre_facet |
Arctic Cordillera Arctic Climate change Zooplankton |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 12, page 2511-2521 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f04-165 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
61 |
container_issue |
12 |
container_start_page |
2511 |
op_container_end_page |
2521 |
_version_ |
1785560479487229952 |