Evaluation of mangrove soils in two localities of the Ensenada de Tumaco, Colombian Pacific

Abstract

This investigation was realised in soils of mangrove of two localities of the Ensenada de Tumaco, Colombian Pacific, denominated: El Rompido (Locality 1) and Asocarlet (Locality 2). The physical and chemical characteristics of each soil were evaluated, the results showed ranks for apparent density between 0,3 and 1 g /cm3 , pH 3,4 and 4,7, organic matter 5,5 and 32,7%, total nitrogen 0,25 and 0,82%, organic carbon 3,19 and 18,96%, cationic exchange capacity 13,6 and 46,6 meq/100g, calcium 4,4 and 27,8 meq/100g, magnesium 7,5 and 34,5 meq/100g, sodium 22,8 and 109,6 meq/100g, potassium 0,8 and 4,6 meq/100g, cupper 0,2 and 0,82 ppm, zinc 0,2 and 1,88 ppm, manganese 2,2 and 18,4 ppm, iron 114 and 218 ppm, aluminum 9 and 39 meq/100g, borum 0,27 and 5,9 ppm and phosphorus 9 and 39 ppm, the texture in locality 1 was sandy and in 2 was silt. One concluded that for the survival of species of mangle, the soils of locality 1 presented/displayed conditions less appropriate than in the 2, product of the low values of pH and interchangeable bases, among others, apparently by the different tensors induced generally by the man.