Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton
10 páginas, 5 figuras, 1 tabla. -- Artículo Open Access. We performed a series of experiments with Antarctic natural phytoplankton communities exposed to natural levels of solar radiation in order to quantify the effect of ambient ultraviolet radiation (UVR) on phytoplankton growth, cell death and t...
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Online Access: | http://hdl.handle.net/10261/48605 https://doi.org/10.3354/ame01392 |
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ftcsic:oai:digital.csic.es:10261/48605 2024-02-11T09:55:42+01:00 Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton Llabrés, Moira Agustí, Susana 2010-03-31 http://hdl.handle.net/10261/48605 https://doi.org/10.3354/ame01392 en eng Inter Research http://dx.doi.org/10.3354/ame01392 Aquatic Microbial Ecology 59 (2) : 151-160 (2010) 0948-3055 http://hdl.handle.net/10261/48605 doi:10.3354/ame01392 1616-1564 open UVR Phytoplankton Antarctica Growth Cell death Standing stock artículo http://purl.org/coar/resource_type/c_6501 2010 ftcsic https://doi.org/10.3354/ame01392 2024-01-16T09:37:21Z 10 páginas, 5 figuras, 1 tabla. -- Artículo Open Access. We performed a series of experiments with Antarctic natural phytoplankton communities exposed to natural levels of solar radiation in order to quantify the effect of ambient ultraviolet radiation (UVR) on phytoplankton growth, cell death and their balance. Treatments in which UVR was excluded showed a high increase in biomass, dominated by diatoms, with chl a (chlorophyll a) reaching values as high as 22 µg l–1, 9 times larger than initial values. In contrast, chl a values remained low at the end of the experiments under treatments with full solar radiation. Phytoplankton growth rates were also inhibited by UVR, increasing up to 5 times in UVR-excluded treatments. The percentage of dead cells within Antarctic phytoplankton communities decreased in treatments with UVR blocked. The Antarctic phytoplankton populations studied appeared to be strongly controlled by UV at surface irradiances with biomasses inhibited by up to 80–90%. This suggests that increased UVR levels over Antarctica may reduce phytoplankton growth rates and cause cell death, thus reducing the phytoplankton stock. These effects may have important consequences for the food web in Antarctic waters. Este trabajo es una contribución al proyecto ICEPOS (REN2002-04165-C03-02/ANT) financiado por el Ministerio español de Educación y Ciencia y al proyecto ATOS (POL2006-00550). Moira Llabrés ha recibido subvención a través del proyecto THRESHOLDS de la Comisión Europea. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Digital.CSIC (Spanish National Research Council) Antarctic The Antarctic Aquatic Microbial Ecology 59 151 160 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
UVR Phytoplankton Antarctica Growth Cell death Standing stock |
spellingShingle |
UVR Phytoplankton Antarctica Growth Cell death Standing stock Llabrés, Moira Agustí, Susana Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton |
topic_facet |
UVR Phytoplankton Antarctica Growth Cell death Standing stock |
description |
10 páginas, 5 figuras, 1 tabla. -- Artículo Open Access. We performed a series of experiments with Antarctic natural phytoplankton communities exposed to natural levels of solar radiation in order to quantify the effect of ambient ultraviolet radiation (UVR) on phytoplankton growth, cell death and their balance. Treatments in which UVR was excluded showed a high increase in biomass, dominated by diatoms, with chl a (chlorophyll a) reaching values as high as 22 µg l–1, 9 times larger than initial values. In contrast, chl a values remained low at the end of the experiments under treatments with full solar radiation. Phytoplankton growth rates were also inhibited by UVR, increasing up to 5 times in UVR-excluded treatments. The percentage of dead cells within Antarctic phytoplankton communities decreased in treatments with UVR blocked. The Antarctic phytoplankton populations studied appeared to be strongly controlled by UV at surface irradiances with biomasses inhibited by up to 80–90%. This suggests that increased UVR levels over Antarctica may reduce phytoplankton growth rates and cause cell death, thus reducing the phytoplankton stock. These effects may have important consequences for the food web in Antarctic waters. Este trabajo es una contribución al proyecto ICEPOS (REN2002-04165-C03-02/ANT) financiado por el Ministerio español de Educación y Ciencia y al proyecto ATOS (POL2006-00550). Moira Llabrés ha recibido subvención a través del proyecto THRESHOLDS de la Comisión Europea. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Llabrés, Moira Agustí, Susana |
author_facet |
Llabrés, Moira Agustí, Susana |
author_sort |
Llabrés, Moira |
title |
Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton |
title_short |
Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton |
title_full |
Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton |
title_fullStr |
Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton |
title_full_unstemmed |
Effects of ultraviolet radiation on growth, cell death and the standing stock of Antarctic phytoplankton |
title_sort |
effects of ultraviolet radiation on growth, cell death and the standing stock of antarctic phytoplankton |
publisher |
Inter Research |
publishDate |
2010 |
url |
http://hdl.handle.net/10261/48605 https://doi.org/10.3354/ame01392 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://dx.doi.org/10.3354/ame01392 Aquatic Microbial Ecology 59 (2) : 151-160 (2010) 0948-3055 http://hdl.handle.net/10261/48605 doi:10.3354/ame01392 1616-1564 |
op_rights |
open |
op_doi |
https://doi.org/10.3354/ame01392 |
container_title |
Aquatic Microbial Ecology |
container_volume |
59 |
container_start_page |
151 |
op_container_end_page |
160 |
_version_ |
1790598387058343936 |