| short-term variability of copepod abundance in jurumirim reservoir, sao paulo, brazil. | short-term variability in composition and abundance of copepod populations were studied during the dry (winter) and rainy (summer) seasons, at the dam region of jurumirim reservoir, são paulo, brazil. an intensive sampling program was carried out during 30 days in each period of the year. samples and measurements were taken every other day at 0, 5, 10, 15, 20 and 25 m depths. the relationship between variability of the populations and some environmental factors was analyzed. the main species wer ... | 2002 | 12071314 |
| taxonomy, ecology, and geographical distribution of the species of the genus thermocyclops kiefer, 1927 (copepoda, cyclopoida) in são paulo state, brazil, with description of a new species. | the taxonomy and ecology of the cyclopoid copepod genus thermocyclops were studied. samples were collected in 207 water bodies located in the 22 hydrographic basins of são paulo state, brazil, including large reservoirs, small and shallow lakes, and ponds and rivers. the genus thermocyclops inhabits mainly water bodies within a limnetic region. four species were found, of which one is new: thermocyclops iguapensis, which occurred in the reservoirs of the ribeira do iguape and paraíba do sul basi ... | 2005 | 16341431 |
| zooplankton fluctuations in jurumirim reservoir (são paulo, brazil): a three-year study. | during three consecutive years, monthly samples of zooplankton were taken in the lacustrine (dam) zone of jurumirim (são paulo, brazil). the seasonal effect on basic limnological features (thermal regime, oxygen distribution, phytoplankton biomass, etc.) was also examined. the influence of the seasonality on the fluctuation of the zooplankton composition and abundance was not clearly detected (low degree of recurrent patterns). rotifers (32 taxa) were the most abundant organisms during almost th ... | 2009 | 19347141 |