@Article{OliveiraOlKaSaPoDeCe:2021:PhAsOp,
               author = "Oliveira, Andr{\'e}a de Lima and Oliveira, Nat{\'a}lia Rudorff 
                         and Kampel, Milton and Sathyendranath, S. and Pompeu, M. and 
                         Detoni, Am{\'a}lia Maria Sacilotto and Cesar, Gabriel Moiano",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Plymouth Marine Laboratory} and 
                         {Universidade de S{\~a}o Paulo (USP)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Phytoplankton assemblages and optical properties in a coastal 
                         region of the South Brazil Bight",
              journal = "Continental Shelf Research",
                 year = "2021",
               volume = "227",
                pages = "e104509",
                month = "Sept.",
             keywords = "Coastal time-series, Oceanic fronts, Package effect index, 
                         Phytoplankton community structure, Phytoplankton pigments, SW-S 
                         Atlantic.",
             abstract = "hytoplankton assemblages in the inner portion of the South Brazil 
                         Bight are studied at a coastal time-series station (20122017). 
                         Diagnostic pigment analysis (DPA) coupled with a hierarchical 
                         cluster analysis were applied to generate and evaluate a locally 
                         tuned model to retrieve phytoplankton groups. These results are 
                         intercompared with phytoplankton taxonomy (microscopy analysis) 
                         and phytoplankton bio-optical properties (i.e., specific 
                         absorption coefficient aph\∗(\λ),package effect index 
                         Qa\∗(440) and size indices Sfand SI). Overall, 
                         phytoplankton bio-optical properties were well related to the DPA 
                         phytoplankton groups and size fractions. Samples with high 
                         proportions of diatoms, dinoflagellates, and cryptophytes usually 
                         presented low or intermediate values of 
                         aph\∗(\λ),Qa\∗(440),Sf, and SI. When 
                         cyanobacteria and green algae proportions were high, the values of 
                         these indices were also higher. The locally-tuned model 
                         overestimated the chlorophyll-a fraction in diatoms and 
                         underestimated that in nanophytoplankton and dinoflagellates, 
                         compared with the biomass estimated from microscopic size 
                         measurements. The area is characterized mainly by 
                         oligo-mesotrophic conditions, with a mixed assemblage, and 
                         episodic events of phytoplankton blooms. Dominance of diatoms were 
                         associated with low sea surface temperature and high total 
                         chlorophyll-a under the influence of nutrient-enriched waters 
                         mixed within the Coastal Water, especially in upwelling events 
                         during spring-summer. On the other hand, cyanobacteria were 
                         associated with high sea surface temperature and low total 
                         chlorophyll-a. Surface waters were dominated by the Coastal Water. 
                         Episodic events with the intrusion of low salinity and temperature 
                         waters suggested the presence of the R{\'{\i}}o de La Plata 
                         River Plume Water in autumn-winter. High salinity and 
                         low-temperature waters indicated surface intrusions of the South 
                         Atlantic Central Water, in spring-summer, either by local 
                         upwelling or the Cape Frio Upwelling Front, characterizing a 
                         highly dynamic environment influencing the phytoplankton 
                         assemblages.",
                  doi = "10.1016/j.csr.2021.104509",
                  url = "http://dx.doi.org/10.1016/j.csr.2021.104509",
                 issn = "0278-4343",
             language = "en",
           targetfile = "oliveira_phytoplankton.pdf",
        urlaccessdate = "11 jun. 2024"
}