Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay
Recently, the Arctic has experienced a recurrent springtime thinning of the stratospheric ozone layer resulting in increasing ultraviolet-B radiation (UVBR, 280 to 320 nm). However, little is known about the effect of such UVBR enhancement on the Arctic ecosystem. In spring-summer 1998 and fall 1999...
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ftuhipublicatio:oai:pure.atira.dk:publications/9645e4e4-7a0b-47d7-8c88-4d6b4c734600 2024-09-15T17:57:00+00:00 Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay Vasseur, Christophe Mostajir, Behzad Nozais, Christian Denis, Michel Fouilland, Eric Klein, Bert Demers, Serge 2003 https://pure.uhi.ac.uk/en/publications/9645e4e4-7a0b-47d7-8c88-4d6b4c734600 http://www.int-res.com/articles/meps2003/252/m252p001.pdf eng eng https://pure.uhi.ac.uk/en/publications/9645e4e4-7a0b-47d7-8c88-4d6b4c734600 info:eu-repo/semantics/restrictedAccess Vasseur , C , Mostajir , B , Nozais , C , Denis , M , Fouilland , E , Klein , B & Demers , S 2003 , ' Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay ' , MAR ECOL-PROG SER , no. 2 , pp. 1-13 . < http://www.int-res.com/articles/meps2003/252/m252p001.pdf > DISSOLVED ORGANIC-MATTER LAKE STRATOSPHERIC OZONE Marine & Freshwater Biology Oceanography MIXED-LAYER CHLOROPHYLL MAXIMUM Ecology APRIL-JULY 1998 ARCTIC WINTER PHYTOPLANKTON BIOMASS ICE B RADIATION article 2003 ftuhipublicatio 2024-08-19T03:28:10Z Recently, the Arctic has experienced a recurrent springtime thinning of the stratospheric ozone layer resulting in increasing ultraviolet-B radiation (UVBR, 280 to 320 nm). However, little is known about the effect of such UVBR enhancement on the Arctic ecosystem. In spring-summer 1998 and fall 1999, 40 stations were investigated in the North Water Polynya (NOW), High Arctic. In the course of this study, 3 periods (pre-bloom, bloom and post-bloom) were distinguished based on chlorophyll a (chl a) concentrations. The attenuation of ultraviolet radiation (UVR) and photosynthetically available radiation (PAR) are reported here. Bio-optical factors, namely particulate organic carbon (POC), dissolved organic carbon (DOC) and chl a concentrations were related to the attenuation coefficient, K-d(lambda), of both UVR and PAR. During the pre-bloom period (9 April to 12 May 1998), all bio-optical factors except chl a concentrations were unrelated to K-d(lambda). However, the absorption of colored dissolved organic matter might prevail. During the bloom period (15 May to 29 June 1998), both chl a and POC were strongly correlated to K-d(lambda). During the post-bloom period (27 August to 25 September 1999), POC contributed from 57 to 83 % of the K-d(lambda). Under stratification conditions, an inverse relationship was observed in the UVR and PAR ranges, between K-d(lambda) and the depth of the subsurface chlorophyll maximum (SCM). This could be a consequence of cell migration below the penetration depth of UVR where they are protected from UVR-induced physiological damages. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Phytoplankton University of the Highlands and Islands: Research Database of UHI |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
DISSOLVED ORGANIC-MATTER LAKE STRATOSPHERIC OZONE Marine & Freshwater Biology Oceanography MIXED-LAYER CHLOROPHYLL MAXIMUM Ecology APRIL-JULY 1998 ARCTIC WINTER PHYTOPLANKTON BIOMASS ICE B RADIATION |
spellingShingle |
DISSOLVED ORGANIC-MATTER LAKE STRATOSPHERIC OZONE Marine & Freshwater Biology Oceanography MIXED-LAYER CHLOROPHYLL MAXIMUM Ecology APRIL-JULY 1998 ARCTIC WINTER PHYTOPLANKTON BIOMASS ICE B RADIATION Vasseur, Christophe Mostajir, Behzad Nozais, Christian Denis, Michel Fouilland, Eric Klein, Bert Demers, Serge Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay |
topic_facet |
DISSOLVED ORGANIC-MATTER LAKE STRATOSPHERIC OZONE Marine & Freshwater Biology Oceanography MIXED-LAYER CHLOROPHYLL MAXIMUM Ecology APRIL-JULY 1998 ARCTIC WINTER PHYTOPLANKTON BIOMASS ICE B RADIATION |
description |
Recently, the Arctic has experienced a recurrent springtime thinning of the stratospheric ozone layer resulting in increasing ultraviolet-B radiation (UVBR, 280 to 320 nm). However, little is known about the effect of such UVBR enhancement on the Arctic ecosystem. In spring-summer 1998 and fall 1999, 40 stations were investigated in the North Water Polynya (NOW), High Arctic. In the course of this study, 3 periods (pre-bloom, bloom and post-bloom) were distinguished based on chlorophyll a (chl a) concentrations. The attenuation of ultraviolet radiation (UVR) and photosynthetically available radiation (PAR) are reported here. Bio-optical factors, namely particulate organic carbon (POC), dissolved organic carbon (DOC) and chl a concentrations were related to the attenuation coefficient, K-d(lambda), of both UVR and PAR. During the pre-bloom period (9 April to 12 May 1998), all bio-optical factors except chl a concentrations were unrelated to K-d(lambda). However, the absorption of colored dissolved organic matter might prevail. During the bloom period (15 May to 29 June 1998), both chl a and POC were strongly correlated to K-d(lambda). During the post-bloom period (27 August to 25 September 1999), POC contributed from 57 to 83 % of the K-d(lambda). Under stratification conditions, an inverse relationship was observed in the UVR and PAR ranges, between K-d(lambda) and the depth of the subsurface chlorophyll maximum (SCM). This could be a consequence of cell migration below the penetration depth of UVR where they are protected from UVR-induced physiological damages. |
format |
Article in Journal/Newspaper |
author |
Vasseur, Christophe Mostajir, Behzad Nozais, Christian Denis, Michel Fouilland, Eric Klein, Bert Demers, Serge |
author_facet |
Vasseur, Christophe Mostajir, Behzad Nozais, Christian Denis, Michel Fouilland, Eric Klein, Bert Demers, Serge |
author_sort |
Vasseur, Christophe |
title |
Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay |
title_short |
Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay |
title_full |
Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay |
title_fullStr |
Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay |
title_full_unstemmed |
Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay |
title_sort |
effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the north water polynya, nothern baffin bay |
publishDate |
2003 |
url |
https://pure.uhi.ac.uk/en/publications/9645e4e4-7a0b-47d7-8c88-4d6b4c734600 http://www.int-res.com/articles/meps2003/252/m252p001.pdf |
genre |
Baffin Bay Baffin Bay Baffin Phytoplankton |
genre_facet |
Baffin Bay Baffin Bay Baffin Phytoplankton |
op_source |
Vasseur , C , Mostajir , B , Nozais , C , Denis , M , Fouilland , E , Klein , B & Demers , S 2003 , ' Effects of bio-optical factors on the attenuation of ultraviolet and photosynthetically available radiation in the North Water Polynya, nothern Baffin Bay ' , MAR ECOL-PROG SER , no. 2 , pp. 1-13 . < http://www.int-res.com/articles/meps2003/252/m252p001.pdf > |
op_relation |
https://pure.uhi.ac.uk/en/publications/9645e4e4-7a0b-47d7-8c88-4d6b4c734600 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1810433205317140480 |