20.500.12556/DiRROS-21830 Relationships between the deep chlorophyll maximum and hydrographic characteristics across the Atlantic, Indian and Pacific oceans 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. Malaspina 2010 chlorophyll a nitracline deep chlorophyll maximum phytoplankton size fractionation Atlantic Ocean Pacific Ocean Indian Ocean hydrobiology marine biology globokomorski višek klorofila (DCM) nutriklina fitoplankton velikostni razredi oceani Atlantski ocean Tihi ocean Indijski ocean hidrobiologija morska biologija true false true Angleški jezik Slovenski jezik Neznano 2025-04-04 10:42:22 2025-04-04 10:42:23 2025-10-24 03:49:57 0000-00-00 00:00:00 2024 0 0 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; str. [1]-17 [art. no.] ǂe092 iss. 4 Dec. 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2024-12-30 574 1886-8134 10.3989/scimar.05519.092 228680195 https://doi.org/10.3989/scimar.05519.092 1 be773386-1130-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31473 RAZ_Estrada_Marta_2024.pdf RAZ_Estrada_Marta_2024.pdf 1 DF00F14E9C7D680AD39E2F7941A0BAAF 0cdd4284ebdc4647730a6efd3df68a5dd22cfbff53cc05d415e4bf7b27fb82fb 0fc7aebe-1131-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31474 5519-Data_Set-10140-1-10-20250225.pdf 5519-Data_Set-10140-1-10-20250225.pdf Dopolnilne informacije 1 045C42B74E78B18622479D1BCB900724 fef797e3a68e54e627ad896f5e7dcc7b66e4fdcd9cccbc674a598b87c1cce4a0 2d48bb82-160b-11f0-963a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=31620 Nacionalni inštitut za biologijo 0 0 0