Abstract

RUBIO-POLANIA, Juan Carlos  and  TRUJILLO-ARCILA, Carlos Alberto. GRANULOMETRIC CHARACTERISTICS OF THE SOFT BOTTOMS IN AN AREA OF THE TAGANGA BAY (COLOMBIA) INFLUENCED BY THE INSTALATION OF BENTONIC SHELTERS. rev.udcaactual.divulg.cient. [online]. 2013, vol.16, n.1, pp.193-203. ISSN 0123-4226.

The establishment of benthic communities depends on the granulometric characteristics of marine sediments. The main objective of this study was to establish the kind of sediment present in the area of influence of casita cubana shelters installed in the Taganga Bay, the Sila Kangama foundation durring the first semester of 2004, evaluating the granulometric characteristics and the chemistry of soft bottom present in the area influenced by three of 15 benthic refuges installed in 25m depth in the interior of the bay. The nature of the sandy sediments, fluctuated between fine, medium and coarse, with a mixture with fine and coarse materials, under medium to high kinetic energy, with a classification ranging from moderate to poor relating to the negative asymmetry values and platikutic distributions indicating bimodality. The percentages of organic material calculated are atypical (betrween 9.99 and 23.66) for sandy sediments and its bioclastic characteristics are the result of the decomposition of calcarreous fragments of biological origin. Two types of sediment environments were observed, one of erosion at station one and one of water flow in stations two and three, which were reflected in the Kruskall-Wallis and Dunn nonparametric tests carried out. No marked effect was observed of the benthic refuges on the sediments evaluated.

Keywords : Sediments; Granulometry; Taganga Bay; Colombian Caribbean.

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