@Article{AffeConRocProNun:2021:PhCoTr,
author = "Affe, Helen Michelle de Jesus and Concei{\c{c}}{\~a}o, Lorena
Pedreira and Rocha, Diogo Souza Bezerra and Proen{\c{c}}a, Luis
Antonio de Oliveira and Nunes, Jos{\'e} Marcos de Castro",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Estadual de Feira de Santana} and {Instituto
Internacional para Sustentabilidade} and {Instituto Federal de
Santa Catarina} and {Universidade Estadual de Feira de Santana}",
title = "Phytoplankton community in a tropical estuarine gradient after an
exceptional harmful bloom of Akashiwo sanguinea (Dinophyceae) in
the Todos os Santos Bay",
journal = "Ocean and Coastal Research",
year = "2021",
volume = "69",
pages = "e21008",
keywords = "Algal blooms, Brazilian coast, Marine phytoplankton, Paraguacu
river estuary.",
abstract = "The objective of this study was to evaluate variations in the
composition and abundance of the phytoplankton community after an
exceptional harmful bloom of Akashiwo sanguinea that occurred in
Todos os Santos Bay (BTS) in early March, 2007. Samples were
collected every ten days, between April, 2007 and March, 2008,
from the estuarine gradient of the Paraguacu River to BTS. The
physical and chemical variables were measured in situ using a
multiparameter sensor. Water samples were collected for analysis
of the dissolved inorganic nutrient concentrations and for the
study of composition and abundance of the microphytoplankton.
Overall, 135 taxa were identified, with a higher richness of
diatoms. The total cell density ranged from 2.92 x 10(3) to 1.16 x
10(7) (5.47 x 10(5) +/- 1.69 x 10(6)) cells L-1, with higher
values in the freshwater zone than in the marine area. Five
species showed peaks of abundance throughout the study, forming
small blooms. Four of these blooms occurred in the rainy season,
formed by the species Guinardia striata (April, 2007),
Scrippsiella cf. acuminata (August, 2007), Euglena gracilis
(August, 2007), and Skeletonema cf. costatum (September, 2007),
while a new bloom of the species Akashiwo sanguinea occurred
during the dry season (December, 2007). The environment was
typically oligotrophic, with low spatiotemporal variation in the
concentrations of dissolved nutrients. Even so, we observed
short-term variations in the structure and composition of the
phytoplankton community, demonstrated by rapid bloom events,
followed by an increase in the total abundance of
microphytoplankton, especially during the rainy season. The blooms
did not cause any notable changes in the water column and did not
present any harmful effects on the system.",
doi = "10.1590/2675-2824069.20-004hmdja",
url = "http://dx.doi.org/10.1590/2675-2824069.20-004hmdja",
issn = "2675-2824",
language = "en",
targetfile = "affe_phytoplancton.pdf",
urlaccessdate = "20 maio 2024"
}