Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance?
- Autores
- Martyniuk, Nicolás Alejandro; Modenutti, Beatriz Estela; Balseiro, Esteban Gabriel
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Climate change is altering temperatures and precipitation patterns all over the world. Melting glaciers increase surface run-off, thereby increasing the transport of suspended solids through streams. The increased load of suspended solids affects turbidity, which decreases the availability of photosynthetically active radiation for primary producers. 2. We analysed how glacial loading of clays influences the light : nutrient ratio and photosynthetic parameters (measured with a pulse amplitude modulated fluorometer) and the carbon : phosphorus (C : P) elemental ratio of periphytic primary producers. A field study was conducted in two canopyfree streams that receive water from the glaciers of Mount Tronador (Patagonia, Argentina), one with high glacial load and the other with clear water. In addition, we conducted an in situ colonisation experiment with three different light treatments. 3. We observed that periphytic biomass (chlorophyll a and carbon content) in the streams and in the experiment varied directly with turbidity. Moreover, photosynthetic parameters varied similarly because of an increase in the efficiency of electron transfer per open reactive centre in the more turbid stream and a chronic photoinhibition of photosystem II in the clearer stream. 4. Periphytic C : P also varied with turbidity as we observed a decrease in C : P with an increase in light in both streams and in the experiment. 5. Our main conclusion is that an increase in glacial melting with its associated increase in glacial clay load should protect primary producers against high irradiances (photosynthetic active radiation + ultraviolet radiation) in canopy-free streams.
Fil: Martyniuk, Nicolás Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; Argentina
Fil: Modenutti, Beatriz Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; Argentina
Fil: Balseiro, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; Argentina - Materia
-
C : P Ratio
Glacial Clay
Periphytic Algae
Photosynthetic Parameters
Turbidity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/12057
Ver los metadatos del registro completo
id |
CONICETDig_0b52b043363a06be4e096c699342ac92 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/12057 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance?Martyniuk, Nicolás AlejandroModenutti, Beatriz EstelaBalseiro, Esteban GabrielC : P RatioGlacial ClayPeriphytic AlgaePhotosynthetic ParametersTurbidityhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Climate change is altering temperatures and precipitation patterns all over the world. Melting glaciers increase surface run-off, thereby increasing the transport of suspended solids through streams. The increased load of suspended solids affects turbidity, which decreases the availability of photosynthetically active radiation for primary producers. 2. We analysed how glacial loading of clays influences the light : nutrient ratio and photosynthetic parameters (measured with a pulse amplitude modulated fluorometer) and the carbon : phosphorus (C : P) elemental ratio of periphytic primary producers. A field study was conducted in two canopyfree streams that receive water from the glaciers of Mount Tronador (Patagonia, Argentina), one with high glacial load and the other with clear water. In addition, we conducted an in situ colonisation experiment with three different light treatments. 3. We observed that periphytic biomass (chlorophyll a and carbon content) in the streams and in the experiment varied directly with turbidity. Moreover, photosynthetic parameters varied similarly because of an increase in the efficiency of electron transfer per open reactive centre in the more turbid stream and a chronic photoinhibition of photosystem II in the clearer stream. 4. Periphytic C : P also varied with turbidity as we observed a decrease in C : P with an increase in light in both streams and in the experiment. 5. Our main conclusion is that an increase in glacial melting with its associated increase in glacial clay load should protect primary producers against high irradiances (photosynthetic active radiation + ultraviolet radiation) in canopy-free streams.Fil: Martyniuk, Nicolás Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; ArgentinaFil: Modenutti, Beatriz Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; ArgentinaFil: Balseiro, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; ArgentinaWiley Blackwell Publishing, Inc2014-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12057Martyniuk, Nicolás Alejandro; Modenutti, Beatriz Estela; Balseiro, Esteban Gabriel; Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance?; Wiley Blackwell Publishing, Inc; Freshwater Biology (print); 59; 11; 11-2014; 2290-23021365-2427enginfo:eu-repo/semantics/altIdentifier/doi/10.1111/fwb.12431info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/fwb.12431/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:25Zoai:ri.conicet.gov.ar:11336/12057instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:34:26.171CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
title |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
spellingShingle |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? Martyniuk, Nicolás Alejandro C : P Ratio Glacial Clay Periphytic Algae Photosynthetic Parameters Turbidity |
title_short |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
title_full |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
title_fullStr |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
title_full_unstemmed |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
title_sort |
Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance? |
dc.creator.none.fl_str_mv |
Martyniuk, Nicolás Alejandro Modenutti, Beatriz Estela Balseiro, Esteban Gabriel |
author |
Martyniuk, Nicolás Alejandro |
author_facet |
Martyniuk, Nicolás Alejandro Modenutti, Beatriz Estela Balseiro, Esteban Gabriel |
author_role |
author |
author2 |
Modenutti, Beatriz Estela Balseiro, Esteban Gabriel |
author2_role |
author author |
dc.subject.none.fl_str_mv |
C : P Ratio Glacial Clay Periphytic Algae Photosynthetic Parameters Turbidity |
topic |
C : P Ratio Glacial Clay Periphytic Algae Photosynthetic Parameters Turbidity |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Climate change is altering temperatures and precipitation patterns all over the world. Melting glaciers increase surface run-off, thereby increasing the transport of suspended solids through streams. The increased load of suspended solids affects turbidity, which decreases the availability of photosynthetically active radiation for primary producers. 2. We analysed how glacial loading of clays influences the light : nutrient ratio and photosynthetic parameters (measured with a pulse amplitude modulated fluorometer) and the carbon : phosphorus (C : P) elemental ratio of periphytic primary producers. A field study was conducted in two canopyfree streams that receive water from the glaciers of Mount Tronador (Patagonia, Argentina), one with high glacial load and the other with clear water. In addition, we conducted an in situ colonisation experiment with three different light treatments. 3. We observed that periphytic biomass (chlorophyll a and carbon content) in the streams and in the experiment varied directly with turbidity. Moreover, photosynthetic parameters varied similarly because of an increase in the efficiency of electron transfer per open reactive centre in the more turbid stream and a chronic photoinhibition of photosystem II in the clearer stream. 4. Periphytic C : P also varied with turbidity as we observed a decrease in C : P with an increase in light in both streams and in the experiment. 5. Our main conclusion is that an increase in glacial melting with its associated increase in glacial clay load should protect primary producers against high irradiances (photosynthetic active radiation + ultraviolet radiation) in canopy-free streams. Fil: Martyniuk, Nicolás Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; Argentina Fil: Modenutti, Beatriz Estela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; Argentina Fil: Balseiro, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Reg.universidad Bariloche. Laboratorio de Limnologia; Argentina |
description |
Climate change is altering temperatures and precipitation patterns all over the world. Melting glaciers increase surface run-off, thereby increasing the transport of suspended solids through streams. The increased load of suspended solids affects turbidity, which decreases the availability of photosynthetically active radiation for primary producers. 2. We analysed how glacial loading of clays influences the light : nutrient ratio and photosynthetic parameters (measured with a pulse amplitude modulated fluorometer) and the carbon : phosphorus (C : P) elemental ratio of periphytic primary producers. A field study was conducted in two canopyfree streams that receive water from the glaciers of Mount Tronador (Patagonia, Argentina), one with high glacial load and the other with clear water. In addition, we conducted an in situ colonisation experiment with three different light treatments. 3. We observed that periphytic biomass (chlorophyll a and carbon content) in the streams and in the experiment varied directly with turbidity. Moreover, photosynthetic parameters varied similarly because of an increase in the efficiency of electron transfer per open reactive centre in the more turbid stream and a chronic photoinhibition of photosystem II in the clearer stream. 4. Periphytic C : P also varied with turbidity as we observed a decrease in C : P with an increase in light in both streams and in the experiment. 5. Our main conclusion is that an increase in glacial melting with its associated increase in glacial clay load should protect primary producers against high irradiances (photosynthetic active radiation + ultraviolet radiation) in canopy-free streams. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-11 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/12057 Martyniuk, Nicolás Alejandro; Modenutti, Beatriz Estela; Balseiro, Esteban Gabriel; Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance?; Wiley Blackwell Publishing, Inc; Freshwater Biology (print); 59; 11; 11-2014; 2290-2302 1365-2427 |
url |
http://hdl.handle.net/11336/12057 |
identifier_str_mv |
Martyniuk, Nicolás Alejandro; Modenutti, Beatriz Estela; Balseiro, Esteban Gabriel; Can increased glacial melting resulting from global change provide attached algae with transient protection against high irradiance?; Wiley Blackwell Publishing, Inc; Freshwater Biology (print); 59; 11; 11-2014; 2290-2302 1365-2427 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/fwb.12431 info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/fwb.12431/abstract |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844613065093414912 |
score |
13.070432 |