Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study
Marine planktonic communities can be affected by increased temperatures associated with global climate change, as well as by increased ultraviolet B radiation (UVBR, 280-320 nm) through stratospheric ozone layer thinning. We studied individual and combined effects of increased temperature and UVBR o...
Published in: | Aquatic Microbial Ecology |
---|---|
Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research
|
Subjects: | |
Online Access: | http://hdl.handle.net/11336/31448 |
id |
ftconicet:oai:ri.conicet.gov.ar:11336/31448 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
PLANKTON UVBR INCREASED TEMPERATURE PATAGONIA Otras Ciencias Biológicas Ciencias Biológicas CIENCIAS NATURALES Y EXACTAS |
spellingShingle |
PLANKTON UVBR INCREASED TEMPERATURE PATAGONIA Otras Ciencias Biológicas Ciencias Biológicas CIENCIAS NATURALES Y EXACTAS Moreau, S. Mostajir, B. Almandoz, Gaston Osvaldo Demers, S. Hernando, M. Lemarchand, K. Lionard, M. Mercier, B. Roy, S. Schloss, Irene Ruth Thyssen, M. Ferreyra, G. A. Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study |
topic_facet |
PLANKTON UVBR INCREASED TEMPERATURE PATAGONIA Otras Ciencias Biológicas Ciencias Biológicas CIENCIAS NATURALES Y EXACTAS |
description |
Marine planktonic communities can be affected by increased temperatures associated with global climate change, as well as by increased ultraviolet B radiation (UVBR, 280-320 nm) through stratospheric ozone layer thinning. We studied individual and combined effects of increased temperature and UVBR on the plankton community of the Beagle Channel, southern Patagonia, Argentina. Eight 2 m3 mesocosms were exposed to 4 treatments (with 2 replicates) during 10 d: (1) control (natural temperature and UVBR), (2) increased UVBR (simulating a 60% decrease in stratospheric ozone layer thickness), (3) increased temperature (+ 3°C), and (4) simultaneous increased temperature and UVBR (60% decrease in stratospheric ozone; + 3°C). Two distinct situations were observed with regard to phytoplankton biomass: bloom (Days 1-4) and post-bloom (Days 5-9). Significant decreases in micro-sized diatoms (>20 µm), bacteria, chlorophyll a, and particulate organic carbon concentrations were observed during the post-bloom in the enhanced temperature treatments relative to natural temperature, accompanied by significant increases in nanophytoplankton (10-20 µm, mainly prymnesiophytes). The decrease in micro-sized diatoms in the high temperature treatment may have been caused by a physiological effect of warming, although we do not have activity measurements to support this hypothesis. Prymnesiophytes benefited from micro-sized diatom reduction in their competition for resources. The bacterial decrease under warming may have been due to a change in the dissolved organic matter release caused by the observed change in phytoplankton composition. Overall, the rise in temperature affected the structure and total biomass of the communities, while no major effect of UVBR was observed on the plankton community. Fil: Moreau, S. Université Catholique de Louvain; Bélgica. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Mostajir, B. Université Montpellier; Francia Fil: Almandoz, Gaston Osvaldo. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Division Ficología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Demers, S. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Hernando, M. Comisión Nacional de Energía Atómica; Argentina Fil: Lemarchand, K. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Lionard, M. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Mercier, B. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Roy, S. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Schloss, Irene Ruth. Institut Des Sciences de la Mer de Rimouski; Canadá. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Thyssen, M. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Ferreyra, G. A. Institut Des Sciences de la Mer de Rimouski; Canadá |
format |
Article in Journal/Newspaper |
author |
Moreau, S. Mostajir, B. Almandoz, Gaston Osvaldo Demers, S. Hernando, M. Lemarchand, K. Lionard, M. Mercier, B. Roy, S. Schloss, Irene Ruth Thyssen, M. Ferreyra, G. A. |
author_facet |
Moreau, S. Mostajir, B. Almandoz, Gaston Osvaldo Demers, S. Hernando, M. Lemarchand, K. Lionard, M. Mercier, B. Roy, S. Schloss, Irene Ruth Thyssen, M. Ferreyra, G. A. |
author_sort |
Moreau, S. |
title |
Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study |
title_short |
Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study |
title_full |
Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study |
title_fullStr |
Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study |
title_full_unstemmed |
Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study |
title_sort |
effects of enhanced temperature and ultraviolet b radiation on a natural plankton community of the beagle channel (southern argentina): a mesocosm study |
publisher |
Inter-Research |
url |
http://hdl.handle.net/11336/31448 |
long_lat |
ENVELOPE(65.783,65.783,-70.417,-70.417) |
geographic |
Argentina Argentino Gaston Patagonia |
geographic_facet |
Argentina Argentino Gaston Patagonia |
genre |
Dirección Nacional del Antártico Instituto Antártico Argentino |
genre_facet |
Dirección Nacional del Antártico Instituto Antártico Argentino |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/ame01694 info:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/abstracts/ame/v72/n2/p155-173/ Ferreyra, G. A.; Thyssen, M.; Schloss, Irene Ruth; Roy, S.; Mercier, B.; Lionard, M.; et al.; Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study; Inter-Research; Aquatic Microbial Ecology; 72; 2; 5-2014; 155-173 0948-3055 http://hdl.handle.net/11336/31448 1616-1564 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.3354/ame01694 |
container_title |
Aquatic Microbial Ecology |
container_volume |
72 |
container_issue |
2 |
container_start_page |
155 |
op_container_end_page |
173 |
_version_ |
1766397018470612992 |
spelling |
ftconicet:oai:ri.conicet.gov.ar:11336/31448 2023-05-15T16:01:01+02:00 Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study Moreau, S. Mostajir, B. Almandoz, Gaston Osvaldo Demers, S. Hernando, M. Lemarchand, K. Lionard, M. Mercier, B. Roy, S. Schloss, Irene Ruth Thyssen, M. Ferreyra, G. A. application/pdf http://hdl.handle.net/11336/31448 eng eng Inter-Research info:eu-repo/semantics/altIdentifier/doi/10.3354/ame01694 info:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/abstracts/ame/v72/n2/p155-173/ Ferreyra, G. A.; Thyssen, M.; Schloss, Irene Ruth; Roy, S.; Mercier, B.; Lionard, M.; et al.; Effects of enhanced temperature and ultraviolet B radiation on a natural plankton community of the Beagle Channel (southern Argentina): a mesocosm study; Inter-Research; Aquatic Microbial Ecology; 72; 2; 5-2014; 155-173 0948-3055 http://hdl.handle.net/11336/31448 1616-1564 CONICET Digital CONICET info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ CC-BY-NC-SA PLANKTON UVBR INCREASED TEMPERATURE PATAGONIA Otras Ciencias Biológicas Ciencias Biológicas CIENCIAS NATURALES Y EXACTAS info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3354/ame01694 2019-08-31T16:37:16Z Marine planktonic communities can be affected by increased temperatures associated with global climate change, as well as by increased ultraviolet B radiation (UVBR, 280-320 nm) through stratospheric ozone layer thinning. We studied individual and combined effects of increased temperature and UVBR on the plankton community of the Beagle Channel, southern Patagonia, Argentina. Eight 2 m3 mesocosms were exposed to 4 treatments (with 2 replicates) during 10 d: (1) control (natural temperature and UVBR), (2) increased UVBR (simulating a 60% decrease in stratospheric ozone layer thickness), (3) increased temperature (+ 3°C), and (4) simultaneous increased temperature and UVBR (60% decrease in stratospheric ozone; + 3°C). Two distinct situations were observed with regard to phytoplankton biomass: bloom (Days 1-4) and post-bloom (Days 5-9). Significant decreases in micro-sized diatoms (>20 µm), bacteria, chlorophyll a, and particulate organic carbon concentrations were observed during the post-bloom in the enhanced temperature treatments relative to natural temperature, accompanied by significant increases in nanophytoplankton (10-20 µm, mainly prymnesiophytes). The decrease in micro-sized diatoms in the high temperature treatment may have been caused by a physiological effect of warming, although we do not have activity measurements to support this hypothesis. Prymnesiophytes benefited from micro-sized diatom reduction in their competition for resources. The bacterial decrease under warming may have been due to a change in the dissolved organic matter release caused by the observed change in phytoplankton composition. Overall, the rise in temperature affected the structure and total biomass of the communities, while no major effect of UVBR was observed on the plankton community. Fil: Moreau, S. Université Catholique de Louvain; Bélgica. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Mostajir, B. Université Montpellier; Francia Fil: Almandoz, Gaston Osvaldo. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Division Ficología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Demers, S. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Hernando, M. Comisión Nacional de Energía Atómica; Argentina Fil: Lemarchand, K. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Lionard, M. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Mercier, B. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Roy, S. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Schloss, Irene Ruth. Institut Des Sciences de la Mer de Rimouski; Canadá. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Thyssen, M. Institut Des Sciences de la Mer de Rimouski; Canadá Fil: Ferreyra, G. A. Institut Des Sciences de la Mer de Rimouski; Canadá Article in Journal/Newspaper Dirección Nacional del Antártico Instituto Antártico Argentino CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Argentino Gaston ENVELOPE(65.783,65.783,-70.417,-70.417) Patagonia Aquatic Microbial Ecology 72 2 155 173 |