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/10553/49863 https://doi.org/10.1016/j.seares.2013.03.015 |
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ftunivlaspalmas:oai:https://accedacris.ulpgc.es:10553/49863 2023-05-15T13:45:50+02:00 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 55674751000 6602569062 6603675433 55675097100 6701465678 2013 http://hdl.handle.net/10553/49863 https://doi.org/10.1016/j.seares.2013.03.015 eng eng 1385-1101 Journal of Sea Research 1385-1101 http://hdl.handle.net/10553/49863 doi:10.1016/j.seares.2013.03.015 84886304542 39 30 83 Journal of Sea Research [ISSN 1385-1101], v. 83, p. 30-39 Investigación Primary production Models Mesoscale Chlorophyll Carbon Nutrients 2013 ftunivlaspalmas https://doi.org/10.1016/j.seares.2013.03.015 2020-02-12T00:09:52Z 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. Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Southern Ocean Universidad de Las Palmas de Gran Canaria: Acceda Antarctic Antarctic Peninsula South Shetland Islands Southern Ocean Journal of Sea Research 83 30 39 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
Investigación Primary production Models Mesoscale Chlorophyll Carbon Nutrients |
spellingShingle |
Investigación Primary production Models Mesoscale Chlorophyll Carbon Nutrients 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 |
Investigación Primary production Models Mesoscale Chlorophyll Carbon Nutrients |
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. |
author2 |
55674751000 6602569062 6603675433 55675097100 6701465678 |
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 |
1385-1101 |
publishDate |
2013 |
url |
http://hdl.handle.net/10553/49863 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_source |
Journal of Sea Research [ISSN 1385-1101], v. 83, p. 30-39 |
op_relation |
Journal of Sea Research 1385-1101 http://hdl.handle.net/10553/49863 doi:10.1016/j.seares.2013.03.015 84886304542 39 30 83 |
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_ |
1766231506742673408 |