Abstract

MIRANDE, V.; BARRETO, G. A.; HALEBLIAN, S. E.  and  TRACANNA, B. C.. Biodiversity of Pre-Delta National Park (Entre Ríos, Argentina): II. Phytoplankton quantitative study. Bol. Soc. Argent. Bot. [online]. 2009, vol.44, n.1-2, pp.11-23. ISSN 1851-2372.

This paper was realized because of lack of phycologic dates from Pre-Delta National Park. The aim of this paper was to know abundance phytoplankton in lentic and lotic environments from this area, which is located in Diamante City (Entre Ríos). Seven sampling sites (three lakes, one stream and two rivers) and absolute algal abundance, biomass and diversity of phytoplankton were studied, employing the Principal Component Analyse (PCA) in the ordination of the sites. Our results have showed to diatoms as dominant across pennate group. The PCA separated the lotic and lentic water bodies in base of considered variables. If we consider to individual level given by species, Aulacoseira granulata was generally dominant in lotic systems but not in lentic systems. The absolute algal abundance, biomass and diversity variables permitted to separate the lentic and lotic sampling sites by means of the PCA utilization.

Keywords : Phytoplankton; Abundance; Lentic and lotic systems; Pre-Delta National Park; Entre Ríos; Argentina.

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