Only Chrysophyceae had an increase in density in February/March 2009, and Cryptophyceae
in 2001 and 2003, also in the same period (Table 2).
1995) for the classes Cryptophyceae
, Dinophyceae, Chrysophyceae, Euglenophyceae, Chlorophyceae and Zygnematophyceae.
A identificacao dos grupos algais e a contagem de individuos indicaram a presenca de diferentes grupos fitoplanctonicos em proporcoes distintas: Chlorophyceae (3,32%), Cyanobacteria (67,05%), Bacillariophyceae (6,88%), Zygnemaphyceae (5,69%), Crysophyceae (0,83%), Euglenophyceae (1,78%) e Cryptophyceae
2010), due to the growth of phytoplankton groups more tolerant to low light penetration, such as Cryptophyceae
and Pennales (MINEEVA et al.
and rhodophyceae: chemotaxonomy, phylogeny, and application.
A total of 419 phytoplankton, 66 zooplankton and 56 macroinvertebrate taxa were recorded, being Bacillariophyceae and Cryptophyceae
in phytoplankton, Rotifera in zooplankton, and Oligochaeta in benthos, the dominant groups during almost the whole study period Differences in density and composition of the communities were identified among reservoir zones, and also when results were compared with previous studies conducted in the reservoir during the first year after impoundment.
Cyanophyceae 33% Chlorophyceae 26% Zygnemaphyceae 14% Euglenophyceae 9% Bacillariophyceae 9% Dinophyceae 6% Xanthophyceae 1% Cryptophyceae
1% Xanthophyceae 1%
, and Chlorophyceae were characteristic of Lake Poppalijarvi, and Chrysophyceae and Cryptophyceae
of Lake Kento, but Diatomophyceae and Dinophyceae of the reference lake (Fig.
Limnetica 22:195-210 (AEP, Cryptophyceae
, Rhodomonas, Ecol, B).
Considering the qualitative and quantitative analyses of phytoplankton, 206 taxa distributed in nine taxonomic groups were registered: Cyanobacteria (65), Bacillariophyceae (59), Zygnemaphyceae (37), Chlorophyceae (31), Oedogoniophyceae (7), Chrysophyceae (4), Cryptophyceae
(1) Chlamydophyceae (1) and Dinophyceae (1).
Classes characterized by lower values of richness during both sampling periods were Euglenophyceae, Chrysophyceae, Oedogoniophyceae, Xanthophyceae, Cryptophyceae
and Rhodophyceae, which together represented 17.
Na lagoa das Garcas e nos tratamentos, foram registrados 230 taxons de algas perifiticas, distribuidos em 83 generos e 9 classes (Cyanophyceae, Chlamydophyceae, Chlorophyceae, Zygnemaphyceae, Oedogoniophyceae, Euglenophyceae, Cryptophyceae
, Xanthophyceae e Chrysophyceae).
was present throughout study period, with greater contribution in the transition zone, in September, and in fluvial zone, in December.
The symbiotic algae found in the tissues of numerous marine invertebrates and often called "zooxanthellae" have included members of the classes Bacillariophyceae, Cryptophyceae
, Dinophyceae, and Rhodophyceae (Rowan, 1998).
, Dinophyceae and Xantophyceae classes also had a minor contribution to the abundance of phytoplankton.