A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica)
Three types of primary productivity (PP) models were evaluated in a mesoscale area around the South Shetland Islands (Antarctica). Input variables were: phytoplankton carbon biomass, Chlorophyll a, sea water temperature, daily irradiance, among others, collected in situ during an oceanographic cruis...
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Online Access: | http://hdl.handle.net/10261/101314 https://doi.org/10.1016/j.seares.2013.03.015 |
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ftcsic:oai:digital.csic.es:10261/101314 2024-02-11T09:57:33+01:00 A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) García Muñoz, Cristina López Urrutia, Ángel Lubián, Luis M. García, Carlos M. Hernández León, Santiago 2013-10 http://hdl.handle.net/10261/101314 https://doi.org/10.1016/j.seares.2013.03.015 unknown Elsevier doi:10.1016/j.seares.2013.03.015 issn: 1385-1101 Journal of Sea Research 83: 30-39 (2013) http://hdl.handle.net/10261/101314 none Mesoscale Models Chlorophyll Carbon Nutrients Primary production artículo http://purl.org/coar/resource_type/c_6501 2013 ftcsic https://doi.org/10.1016/j.seares.2013.03.015 2024-01-16T10:00:52Z Three types of primary productivity (PP) models were evaluated in a mesoscale area around the South Shetland Islands (Antarctica). Input variables were: phytoplankton carbon biomass, Chlorophyll a, sea water temperature, daily irradiance, among others, collected in situ during an oceanographic cruise (COUPLING, January 2010). Models of the first type were based on Chl a measurements: the widely used model VGPM (Behrenfeld and Falkowski, 1997) and a derived version developed for the Western Antarctic Peninsula (Dierssen et al., 2000). The second type included two models based on phytoplankton carbon biomass: one developed for the whole Southern Ocean (Arrigo et al., 2008) and one based on the Metabolic Theory of Ecology developed by López-Urrutia et al. (2006), being the first time that a model with these features is used for Antarctic waters. The third type was an updated version of the carbon-based model CbPM (first described by Behrenfeld et al. (2005)) based on the Chl a/carbon biomass ratio modulation. The degree of agreement among the results between the different types of models turned out to be low (>. 30% of difference), but high within models of the same type (<. 10% of difference). Biomass-based model predictions differed the most from those estimated by the other two types. The differences in PP estimates were primarily attributed to the different ways these models treat the phytoplankton assemblage, along with the difference in input variables. Among the five models evaluated, the output from the modified version of the CbPM showed the lowest bias (0.55) being the most realistic. It made a special attempt to detect the factors controlling phytoplankton physiological state, showing a nutrient limitation towards the Drake area similar to the one observed for the in situ PP values. © 2013 Elsevier B.V. This work was supported by the CTM2008-06343-C02-02/ANT project from the Spanish Ministry of Science and Education. C.G-M.'s work was supported by a predoctoral fellowship from the Spanish Council ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Southern Ocean Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula South Shetland Islands Southern Ocean Journal of Sea Research 83 30 39 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Mesoscale Models Chlorophyll Carbon Nutrients Primary production |
spellingShingle |
Mesoscale Models Chlorophyll Carbon Nutrients Primary production García Muñoz, Cristina López Urrutia, Ángel Lubián, Luis M. García, Carlos M. Hernández León, Santiago A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) |
topic_facet |
Mesoscale Models Chlorophyll Carbon Nutrients Primary production |
description |
Three types of primary productivity (PP) models were evaluated in a mesoscale area around the South Shetland Islands (Antarctica). Input variables were: phytoplankton carbon biomass, Chlorophyll a, sea water temperature, daily irradiance, among others, collected in situ during an oceanographic cruise (COUPLING, January 2010). Models of the first type were based on Chl a measurements: the widely used model VGPM (Behrenfeld and Falkowski, 1997) and a derived version developed for the Western Antarctic Peninsula (Dierssen et al., 2000). The second type included two models based on phytoplankton carbon biomass: one developed for the whole Southern Ocean (Arrigo et al., 2008) and one based on the Metabolic Theory of Ecology developed by López-Urrutia et al. (2006), being the first time that a model with these features is used for Antarctic waters. The third type was an updated version of the carbon-based model CbPM (first described by Behrenfeld et al. (2005)) based on the Chl a/carbon biomass ratio modulation. The degree of agreement among the results between the different types of models turned out to be low (>. 30% of difference), but high within models of the same type (<. 10% of difference). Biomass-based model predictions differed the most from those estimated by the other two types. The differences in PP estimates were primarily attributed to the different ways these models treat the phytoplankton assemblage, along with the difference in input variables. Among the five models evaluated, the output from the modified version of the CbPM showed the lowest bias (0.55) being the most realistic. It made a special attempt to detect the factors controlling phytoplankton physiological state, showing a nutrient limitation towards the Drake area similar to the one observed for the in situ PP values. © 2013 Elsevier B.V. This work was supported by the CTM2008-06343-C02-02/ANT project from the Spanish Ministry of Science and Education. C.G-M.'s work was supported by a predoctoral fellowship from the Spanish Council ... |
format |
Article in Journal/Newspaper |
author |
García Muñoz, Cristina López Urrutia, Ángel Lubián, Luis M. García, Carlos M. Hernández León, Santiago |
author_facet |
García Muñoz, Cristina López Urrutia, Ángel Lubián, Luis M. García, Carlos M. Hernández León, Santiago |
author_sort |
García Muñoz, Cristina |
title |
A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) |
title_short |
A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) |
title_full |
A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) |
title_fullStr |
A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) |
title_full_unstemmed |
A comparison of primary production models in an area of high mesoscale variability (South Shetland Islands, Antarctica) |
title_sort |
comparison of primary production models in an area of high mesoscale variability (south shetland islands, antarctica) |
publisher |
Elsevier |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/101314 https://doi.org/10.1016/j.seares.2013.03.015 |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Southern Ocean |
op_relation |
doi:10.1016/j.seares.2013.03.015 issn: 1385-1101 Journal of Sea Research 83: 30-39 (2013) http://hdl.handle.net/10261/101314 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.seares.2013.03.015 |
container_title |
Journal of Sea Research |
container_volume |
83 |
container_start_page |
30 |
op_container_end_page |
39 |
_version_ |
1790593094854377472 |