Zonas del Sitio Ramsar 1602 analizadas para hidrocarburos fracción pesada en Tuxpan, Veracruz

The mangrove is a complex and dynamic ecosystem, considered a wetland of international importance since it has a strong inter / intra –specific interrelation with the environment. Its importance lies in innumerable services  that  provide different  areas,  including the economic.  However, despite  this, mangroves have been negatively impacted by pollution, having an annual deforestation rate of approximately 2.5%, from 775 thousand ha in 2005 to 764 thousand 486 ha in 2010. The objective of this research was to establish two areas of Ramsar site 1602 "Manglares y Humedales de Tuxpan", one to the north and one to the south (ZN and ZS), each one hectare. Among the main pollutants of the area are the effects of tourism, road and oil infrastructure, agricultural and marine activities, the reduction of water flow by irrigation works and water contamination by agrochemicals, heavy metals, nutrients and hydrocarbons  associated  with  several  activities,  mainly in  the  northern  zone.  Heavy hydrocarbon concentrations (HFP) were evaluated in 16 sub-samples of the two areas obtained at a depth of 70 cm from the surface to obtain a composite sample for each zone, which was analyzed (EPA 1661a and 9071b with some modifications), quantifying the HFP by weight difference. Heavy fraction hydrocarbons were found in  both  sampling areas,  with  the highest  concentration  in  the northern zone,  however,  the concentrations were not statistically different.