| Title: | Relationships between the deep chlorophyll maximum and hydrographic characteristics across the Atlantic, Indian and Pacific oceans |
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| Authors: | ID Estrada, Marta (Author)
ID Latasa, Mikel (Author)
ID Cabello, Ana Maria (Author)
ID de la Fuente, Patricia (Author)
ID Guallar, Carles (Author)
ID Mozetič, Patricija (Author) |
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| Files: |  URL - Source URL, visit https://doi.org/10.3989/scimar.05519.092
 PDF - Presentation file, download (4,04 MB)
MD5: DF00F14E9C7D680AD39E2F7941A0BAAF
PDF - Supplement, download (1,88 MB)
MD5: 045C42B74E78B18622479D1BCB900724
Description: Dopolnilne informacije
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  NIB - National Institute of Biology
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| Abstract: | The Malaspina-2010 circumnavigation expedition on board R/V Hesperides surveyed tropical and subtropical regions of the Atlantic, Indian and Pacific oceans between December 2010 and July 2011. This article examines the relationships between the distribution of chlorophyll a (Chl a), major inorganic nutrients and other hydrographic variables. A deep chlorophyll maximum (DCM) was found at most stations between 60 and 150 m depth; it occurred close to the level of 1% surface photosynthetically active radiation and was associated with the nitracline. There was a negative relationship between total Chl a at surface and the DCM depth, and between Chl a concentration at the DCM and DCM depth. In terms of Chl a concentration, picophytoplankton was the dominant size class at all sampled light intensities (surface, 20% of surface PAR and PAR at DCM), oceans and geoclimatic zones, except at some stations influenced by upwellings or divergences. Within the Chl a concentration ranges found in this study, the proportion of picophytoplankton increased with total Chl a, in contrast with some previous findings. Vertically integrated Chl a was positively correlated with surface Chl a, with similar slopes for the whole data set and for the different oceans and zones. In turn, surface Chl a and sea surface temperature showed a negative correlation for the Indian Ocean and the subtropical zone, a positive correlation for the Atlantic, and non-significant relationships for the remaining oceans and zones. |
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| Keywords: | Malaspina 2010, chlorophyll a, nitracline, deep chlorophyll maximum, phytoplankton size fractionation, Atlantic Ocean, Pacific Ocean, Indian Ocean, hydrobiology, marine biology |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 30.12.2024 |
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| Year of publishing: | 2024 |
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| Number of pages: | str. [1]-17 |
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| Numbering: | iss. 4, [art. no.] ǂe092 |
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| PID: | 20.500.12556/DiRROS-21830  |
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| UDC: | 574 |
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| ISSN on article: | 1886-8134 |
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| DOI: | 10.3989/scimar.05519.092 |
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| COBISS.SI-ID: | 228680195 |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji: Mikel Latasa, Ana M. Cabello, Patricia de la Fuente, Carles Guallar, Patricija Mozetič, Max Riera-Lorente, Montserrat Vidal, Dolors Blasco;
Opis vira z dne 12. 3. 2025;
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| Publication date in DiRROS: | 04.04.2025 |
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| Views: | 705 |
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| Downloads: | 439 |
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