Data/hora: 05/06/2024 18:27:52

Provedor de dados: | 39
País: | Brazil
Título: | Invasion and establishment of Ceratium furcoides (Dinophyceae) in an urban lake in Porto Alegre, RS, Brazil
Autores: | Silva,Luiza Nicoleite da; Medeiros,Caroline Modena de; Cavalcante,Kaoli Pereira; Cardoso,Luciana de Souza.
Data: | 2019-12-01
Ano: | 2019
Palavras-chave: | Dinoflagellate; Invasive species; Shallow lake; Subtropical; Southern Brazil.
Resumo: | ABSTRACT Ceratium furcoides has received attention due its invasive behavior in South America and consequent alterations in local phytoplankton communities. Pedalinhos Lake had been dominated by chlorophytes until 2015, when the first occurrence of this dinoflagellate was detected. In order to investigate the colonization process of this species, we monitored the meteorological variables and phytoplankton abundance of this urban lake on a weekly basis from September 2015 to September 2018. At the beginning of the invasion process (Year 1), a peak density of 10,170 ind.mL-1 was recorded, with a significant decrease to 23 ind.mL-1, indicating an initial, unstable process of adaptation, with notable oscillation and reduction of cyanobacterial blooms. At this time, abundance of C. furcoides revealed inverse correlations with cyanobacteria, temperature, and insolation. InYear 2 therewere a stabilization of the density of C. furcoides accompanied by increased cell size. Year 3 (starting in September 2017) was again marked by oscillations in the density of this dinoflagellate. This study contributes to improved understanding of the adaptation process of this dinoflagellate in an invaded environment and its effects on the local phytoplankton community.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400654
Editor: | Sociedade Botânica do Brasil
Relação: | 10.1590/0102-33062018abb0429
Formato: | text/html
Fonte: | Acta Botanica Brasilica  v.33 n.4 2019
Fonte: | info:eu-repo/semantics/openAccess