2005
DOI: 10.1007/s10750-004-8332-z
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Short term spatial and temporal variation of phytoplankton in a shallow tropical oligotrophic reservoir, southeast Brazil

Abstract: Locally called IAG pond, system is a small, oligotrophic, shallow, urban reservoir located in the Parque Estadual das Fontes do Ipiranga Biological Reserve, south of Sa˜o Paulo municipality, southeastern Brazil. Study was carried out in two phases to cover the two climatic periods (dry and rainy) that characterize the area. Daily samples were collected on seven consecutive days (dry = 20

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Cited by 86 publications
(42 citation statements)
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“…The regimen of mixing water influences directly the phytoplankton structure (Padisák, 1993), as that can affect the availability of nutrients in the water column (Lopes et al, 2005). The decrease in diversity observed in September 2010, May and July 2011 in station N2, and in November 2010 in C1, is a result of the decrease in the number of species and evenness, as observed by Padisák (1993).…”
Section: Discussionmentioning
confidence: 97%
See 1 more Smart Citation
“…The regimen of mixing water influences directly the phytoplankton structure (Padisák, 1993), as that can affect the availability of nutrients in the water column (Lopes et al, 2005). The decrease in diversity observed in September 2010, May and July 2011 in station N2, and in November 2010 in C1, is a result of the decrease in the number of species and evenness, as observed by Padisák (1993).…”
Section: Discussionmentioning
confidence: 97%
“…In addition, some studies have observed an increase in phytoplankton density and biomass due to the selective consumption of the zooplankton and consequent dominance of Cyanobacteria (Degans and Meester, 2002;Kozak and Goldin, 2004;Borges et al, 2010). Cyanobacteria and Chlorophyceae were particularly represented by Chroococcales and Chlorococcales, respectively, especially colonial nanoplanktonics, that presented high surface/volume ratio, which increases the absorption of nutrients allowing adaptive advantages (Lopes et al, 2005;Dantas et al, 2008;Brasil and Huszar, 2011).…”
Section: Discussionmentioning
confidence: 99%
“…Considerando a disponibilidade de fósforo para o período de 1996 a 1998, a concentração do ortofosfato nas camadas superfi ciais do sistema sempre esteve abaixo do limite de detecção do método e a de PT, inferior a 20 μg P L -1 (Ferragut 1999, Bicudo et al 2002b, Lopes et al 2005, Vercellino & Bicudo 2006. Entre 2000 e 2001, o reservatório foi esvaziado para obras hidráulicas, completando seu nível somente em 2002.…”
Section: Discussionunclassified
“…Furthermore, studies of a taxonomic nature (Brassac andLudwig, 2003, 2005) and of the functional groups directly linked to physiological adaptations were conducted, allowing for a more effective prediction of environmental conditions. In tropical and subtropical regions, this approach has been applied by Kruk et al (2002), Melo and Huszar (2000), Huszar et al (2003), Crossetti and Bicudo (2005), Lopes et al (2005), Borges et al (2008), Gemelgo et al (2009), among others. Based on the above, the objective of this work was to analyze the structure of the phytoplankton community and its functional groups as one of the tools to evaluate the environmental conditions of the Cachoeira Dourada reservoir.…”
Section: Introductionmentioning
confidence: 99%