| when | where |
| June- August 2004 | Preliminary selection considering satellite images, maps, historical data |
| September-October 2004 | Field visit of shallow lake previously selected in South Brazil and Uruguay |
| …Argentina Mar del Plata to Rawson | |
| …Rio de Janeiro- Espirito Santo | |
| …Natal-Recife | |
| 17 November- 17 December 2004 | Field samples collection from South Brazil and Uruguay (13 lakes) |
| 18 December - 24 December 2004 | … Uruguay (6 lakes) |
| 10 - 12 January 2005 | Analyses of Brazilian/Uruguayan samples in Montevideo |
| 13 January-February 2005 | Field samples collection from Mar del Plata-Rawson (21 lakes) |
| March 2005 | Analyses of Brazilian/Uruguayan/Argentian samples in Montevideo |
| July-August 2005 | … Central Brazil: Rio de Janeiro – Esp. Santos (20 lakes) |
| September – mid October 2005 | … North Brazil: Salvador-Natal (20 lakes) |
| mid October - mid November 2005 | Analyses of Brazilian samples in Natal |
| November –December 2005 | Field samples collection from Patagonia (10 lakes) |
| January-February 2006 | … Tierra del Fuego (10 lakes) |