| cyclopidae (crustacea, copepoda) from the upper paraná river floodplain, brazil. | cyclopid copepods from samples of fauna associated with aquatic macrophytes and plancton obtained in lotic and lentic environments were obtained from the upper paraná river floodplain (in the states of paraná and mato grosso do sul, brazil). macrophytes were collected in homogeneous stands and washed. plankton samples, taken from the water column surface and bottom, were obtained using a motor pump, with a 70 microns mesh plankton net for filtration. twelve taxa of cyclopidae were identified. am ... | 2002 | 12185912 |
| spatial distribution and secondary production of copepoda in a tropical reservoir: barra bonita, sp, brazil. | the present paper aims to describe the spatial distribution of zooplankton copepods, their biomass and instantaneous secondary production, in barra bonita, a large eutrophic, polymitic reservoir (22 degrees 29' s and 48 degrees 34' w) on the tietê river, of the paraná basin. sampling was carried out during two seasons: dry winter and rainy summer. species composition, age structure and numerical density of each copepod species population were analyzed at 25 sampling stations. secondary productio ... | 2007 | 17876432 |