Análise exploratória dos diferentes impactos antropogênicos nos estuários de Pernambuco

Abstract

The physical, chemical and biological aspects of three estuaries of Pernambuco were studied to verify the different patterns of human impacts in these environments. Water quality and sediment parameters were collected from estuaries of Rio Botafogo and Carrapicho (north coast of PE) and Rio Maracaípe (Southern coast of the state) in the period from July to December 2011. These estuaries have different characteristics in your area, Rio Botafogo in the vicinity of the basin has more industries, Rio Carrapicho more shrimp and agriculture in general and the Rio Maracaípe is almost urban. The parameters observed regarding the sediment significant differences were identified in the presence of trace metals between the estuary of the Rio Botafogo with the Rio Maracaípe. As for the water the most significant difference was identified in total and fecal coliform estuary Rio Maracaípe regarding the Rio Carrapicho. Individually it was observed that the Rio Botafogo estuary is contaminated by iron (Fe) and mercury (Hg) due to evictions of industries and the estuary has Maracaípe contamination by fecal coliform or resulting from poor sanitary conditions of their area. The principal component analysis showed patterns of different characteristics within each of estuaries and also between them. For the phytoplankton was not identified any significant change in their communities.