| removal efficiency of a constructed wetland for wastewater treatment according to vegetation dominance. | a free water surface wetland was built to treat wastewater containing metals (cr, ni and zn) and nutrients from a tool factory in santo tomé, santa fe, argentina. eichhornia crassipes became dominant and covered about 80% of the surface throughout the first year, and decreased progressively until its disappearance. when water depth was lowered typha domingensis steadily increased plant cover and attained 30% of the surface by the end of the study. while e. crassipes was dominant, the wetland ret ... | 2007 | 17346771 |
| zoo-heleoplankton structure in three artificial ponds of north-eastern argentina. | the aim of the present study was to compare the abundance and species richness of zoo-heleoplankton bigger than 53 microm in an annual cycle under similar climate conditions in three artificial ponds, in order to observe the changes during an annual cycle. samples were taken monthly from june 1993 to july 1994 in corrientes, argentina. the first pond (a) was covered an 80% by eichhornia crassipes (mart.), the second one (b) with bloom of microcystis aeruginosa (kurtzing) and the last one (c) wit ... | 2008 | 19419034 |