Abstract

SALAS-DUENAS, Danilo Arturo et al. Effects of the large masses of floating vegetation on the composition of the Ypoá lagoon complex, Paraguay. Rev. Soc. cient. Parag. [online]. 2019, vol.24, n.1, pp.137-162. ISSN 2617-4731.  https://doi.org/10.32480/rscp.2019-24-1.137-162.

The Lake Ypoa system, comprised of the three major water bodies Ypoa, Cabral and Vera, is located within one of the cratons of the Oriental region, the Tebicuary River, and is highly influenced by the dynamics of the rivers Paraguay and Paraná. During the work carried out, the bathymetric studies have shown the shallow depth of each of these water bodies. Studies of the dynamics of the floating islands of vegetation that cover a large portion of the three water bodies suggest that they are in ongoing evolution, consolidating themselves more and more, and in some cases even adjoining themselves to the mainland. Given these facts, the proposed hypothesis of redefining the limits of the Lake Ypoa system as a single body of water divided by the floating islands of vegetation becomes more plausible, as opposed to the three separated bodies; this concept was also illustrated in the 19th century cartography of the region. Bearing in mind this is a protected area, it is imperative to redefine the boundaries of this water system including the three water bodies in a single lagoon system and incorporating the floating islands of vegetation as the sites where most of the biodiversity associated with wetlands is concentrated.

Keywords : lagoon complex Ypoá; floating vegetation; bathymetry; evolution.

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