The uncontrolled growth of Eichhornia crassipes (Mart.) Solms in the banks of São Francisco River in Petrolina (PE) and Juazeiro (BA) Counties, Northeastern Brazil

Maria Campelo

Abstract


Abstract:

The uncontrolled growth of aquatic macrophytes is a problem experienced by most Brazilian cities, regardless of their size. Such uncontrolled growth has generated serious social, cultural and environmental issues due to the lack of planning and infrastructure in urban areas. Thus, the aim of the current study is to assess the unplanned and uncontrolled growth of aquatic macrophytes such as Eichhornia crassipes (also known as water hyacinth) in Brazilian counties such as Petrolina (PE) and Juazeiro (BA); as well as to assess the factors contributing to this condition in the edges of counties located in the Northeastern semi-arid region. The results of the investigations conducted in situ in the banks of São Francisco River, in the edges of these two counties, have demonstrated the concern with their public policies regarding water resources, more specifically with the water of a National Integration River. It was possible seeing the excessive growth and proliferation of aquatic macrophytes (e.g., water hyacinth); damages to recreation, tourism and landscaping; the emergence of mosquitoes, larvae and other vectors; and changes in the diversity of plant and animal species (some native plant species, fish and other organisms were replaced). It is recommended using modern geographic information systems to estimate and monitor the size of water hyacinth populations in areas where they prevail.

 


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ISSN : 2251-1563