Structure and temporal variation of the phytoplankton of a macrotidal beach from the Amazon coastal zone

dc.citation.issue3pt_BR
dc.citation.spage1325pt_BR
dc.citation.volume88pt_BR
dc.creatorQUEIROZ, Jislene Brito Matos
dc.creatorOLIVEIRA, Suellen Mara Oliveira de
dc.creatorPEREIRA, Luci Cajueiro Carneiro
dc.creatorCOSTA, Rauquírio André Albuquerque Marinho da
dc.date.accessioned2017-03-10T15:41:36Z
dc.date.available2017-03-10T15:41:36Z
dc.date.issued2016-09
dc.description.abstractThe present study aimed to analyze the structure and the temporal variation of the phytoplankton of Ajuruteua beach (Bragança, Pará) and to investigate the influence of environmental variables on the dynamics of this community to provide a basis about the trophic state of this environment. Biological, hydrological and hydrodynamic samplings were performed during a nyctemeral cycle in the months of November/08, March/09, June/09 and September/09. We identified 110 taxa, which were distributed among the diatoms (87.3%), dinoflagellates (11.8%) and cyanobacteria (0.9%), with the predominance of neritic species, followed by the tychoplankton species. Chlorophyll-a concentrations were the highest during the rainy period (24.5 mg m-3), whereas total phytoplankton density was higher in the dry period (1,255 x 103 cell L-1). However, phytoflagellates density was significantly higher during the rainy period. Cluster Analysis revealed the formation of four groups, which were influenced by the monthly differences in the environmental variables. The Principal Component Analysis indicated salinity and chlorophyll-a as the main variables that explained the components. Spearman correlation analysis supported the influence of these variables on the local phytoplankton community. Overall, the results obtained suggest that rainfall and strong local hydrodynamics play an important role in the dynamic of the phytoplankton of Ajuruteua beach, by influencing both environmental and biological variables.pt_BR
dc.identifier.citationMATOS, JISLENE Brito et al. Structure and temporal variation of the phytoplankton of a macrotidal beach from the Amazon coastal zone. Anais da Academia Brasileira de Ciências, Rio de Janeiro, v. 88, n. 3, p. 1325-1339, set. 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401325&lng=pt&nrm=iso>. Acesso em: 10 mar. 2017. <http://dx.doi.org/10.1590/0001-3765201620150688>.pt_BR
dc.identifier.issn1678-2690pt_BR
dc.identifier.urihttps://repositorio.ufpa.br/handle/2011/7853
dc.languageporpt_BR
dc.publisherUniversidade Federal do Parápt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.initialsUFPApt_BR
dc.relation.ispartofAnais da Academia Brasileira de Ciênciaspt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectFitoplânctonpt_BR
dc.subjectVariáveis ambientaispt_BR
dc.subjectVariação temporalpt_BR
dc.subjectPraia de Ajuruteua - PApt_BR
dc.subjectBragança - PApt_BR
dc.subjectVariação climáticapt_BR
dc.titleStructure and temporal variation of the phytoplankton of a macrotidal beach from the Amazon coastal zonept_BR
dc.typeArtigo de Periódicopt_BR
dcterms.citation.epage1339pt_BR

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