Occurrence and toxicity of an Anabaena bloom in a tropical reservoir (Southeast Brazil)

Sotero-Santos, Rosana B.; Carvalho, Elisa Garcia; Dellamano-Oliveira, Maria José; Rocha, Odete

doi:10.1016/j.hal.2007.12.017

Cited by 55 publications

(37 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Silva (2006) showed the relationship between water source for human supply (primarily from rivers and streams) and the prevalence of multiple intestinal parasites in Amazon floodplain communities. Toxic algae blooms are regular and recurrent in the Brazilian water bodies outside the Amazon region (Yunes et al, 2003;Silva et al, 2007;Sotero-Santos et al, 2008;Chaves et al, 2009;Costa et al, 2009;Yunes, 2009), and had already caused the death of 70 chronic renal patients in a hemodialysis clinic in the Caruaru municipality in the State of Pernambuco in 1996 (Azevedo et al, 2002). The incidence of these toxins in reservoirs responsible for the production and distribution of potable water made water agencies around the world adopt improved purification for providing safe drinking water (Hitzfeld et al, 2000;Schmidt et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

“…This increase can be both natural and human induced (Moss 1988;Wetzel 2001). Various studies have already addressed the problems related to aquatic system eutrophication which impairs its ability to supply both human needs and maintenance of aquatic life (Espíndola et al, 2000;Sampaio et al, 2002;Sotero-Santos et al, 2008;Garcia et al, 2010). Moreover, this phenomenon can cause major functional and compositional shifts in ecosystems (Scheffer et al, 2001;Schindler, 2006) and the increase in diseases in humans and wildlife (Johnson et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará)

Affonso¹,

Barbosa²,

Novo³

2011

Braz. J. Biol.

View full text Add to dashboard Cite

Assurance of water quality for human consumption is essential for public health policies. In the Amazon floodplain, the seasonal water level variation causes periodic flooding of marginal areas that are usually used for settlements, agriculture and livestock. Therefore, the exchange of materials between the terrestrial and aquatic ecosystem affects the proportion of suspended and dissolved components in water and its physical-chemical characteristics, and consequently the quality of the water used by local people. Following this approach, the aim of this study is to evaluate changes in water quality in Lago Grande de Curuaí floodplain, Óbidos, Pará in response to the flood pulse, during one hydrological year from 2003 to 2004, based on water use classes (according to National Water Agency 357/2005 resolution) using chlorophyll-a and dissolved oxygen concentration as parameters and the eutrophication index. Ordinary kriging was applied to interpolate chlorophyll-a and dissolved oxygen and to predict values at non sampled locations. Each location was then classified according to water use acceptable parameters and to Carlson Trophic State Index modified by Toledo to map lake water classes and trophic status. The result showed that Lago Grande de Curuaí floodplain is a supereutrophic system, with levels of dissolved oxygen and chlorophyll-a not suitable for human supply during the receding water phase. These areas are located near the riverine communities, which can cause health problems due to the presence of potentially toxic algae. Therefore, monitoring water quality in Amazon lakes is essential to ensure the availability has appropriate quality for human and animal supplies.Keywords: Amazon várzea, chlorophyll-a, dissolved oxygen, eutrophication index, seasonality.Mudanças na qualidade da água nos lagos de planície de inundação em função do pulso de inundação do rio Amazonas: lago Grande de Curuaí, Pará ResumoA garantia da qualidade da água para consumo humano é essencial para as políticas de saúde pública. Na planície Amazônica a variação sazonal do nível de água provoca inundações periódicas das áreas marginais que são normalmente utilizadas para os assentamentos humanos, a agricultura e a pecuária. Portanto, a troca de materiais entre os ecossistemas terrestres e aquáticos afeta a proporção de componentes em suspensão e dissolvidos na água e suas características físico-químicas, o que, consequentemente, afeta a qualidade da água utilizada pela população local. Seguindo essa abordagem, o objetivo deste trabalho é avaliar as mudanças na qualidade da água na planície de inundação do lago Grande de Curuaí, Óbidos, Pará, em função do pulso de inundação, durante um ano hidrológico de 2003 a 2004, tendo por base tanto as classes de uso da água (de acordo com a Resolução nº 357/2005 da Agência Nacional de Água), usando como parâmetros tanto a concentração de clorofila-a e o oxigênio dissolvido, quanto o índice de eutrofização. Utilizou-se o método de krigagem para interpolar os dados de clorofila-a e de oxig...

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará)

Affonso¹,

Barbosa²,

Novo³

2011

Braz. J. Biol.

View full text Add to dashboard Cite

show abstract

“…Knowledge of the cyanobacteria's response for metal additions is ecologically important due to its high frequency in the aquatic environments in several countries around the world, including Brazil. Cyanobacterial blooms are very frequent episodes partially as a consequence of favorable climatic conditions, but mainly due to the overenrichment of environment (Sotero-Santos et al 2008;Figueredo and Giani 2009). Literature data show that total metal concentration is not a good predictor of bioavailability, toxicity and mobility of metals in the environment (Sunda and Huntsman 1998), whereas the concentration of free ions are closely related to its bioavailability (Campbell et al 2002;Almas et al 2006;Worms et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa

Rodgher

Espíndola

Simões

et al. 2012

Braz. arch. biol. technol.

View full text Add to dashboard Cite

show abstract

“…Anabaena, which is another significant bloom-forming cyanobacterial genus, is well known for its ability to produce geosmin, a taste/odor (T/O) compound with earthy or moldy smell (Izaguirre et al, 1982;Hayes and Burch, 1989;Saadoun et al, 2001;Tsujimura and Okubo, 2003;Wang et al, 2005). In addition, Anabaena has recently been identified as a producer of anatoxin-a, a potent postsynaptic depolarizing neuromuscular blocking cyanotoxin (Beltran and Neilan, 2000;Pawlik-Skowronska et al, 2004;Osswald et al, 2007) as well as MCs (Sotero-Santos et al, 2008). Although Anabaena is a common bloom-forming cyanobacterium with a worldwide distribution, there are few reported studies of the occurrence of Anabaena and the associated metabolites geosmin and cyanotoxins worldwide.…”

mentioning

confidence: 99%

Cyanobacterial population and harmful metabolites dynamics during a bloom in Yanghe Reservoir, North China

Yang

et al. 2010

Harmful Algae

View full text Add to dashboard Cite

Occurrence and toxicity of an Anabaena bloom in a tropical reservoir (Southeast Brazil)

Cited by 55 publications

References 45 publications

Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará)

Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará)

Cadmium and Chromium Toxicity to Pseudokirchneriella subcapitata and Microcystis aeruginosa

Cyanobacterial population and harmful metabolites dynamics during a bloom in Yanghe Reservoir, North China

Contact Info

Product

Resources

About