Services on Demand
Journal
Article
Indicators
- Cited by SciELO
- Access statistics
Related links
- Cited by Google
- Similars in SciELO
- Similars in Google
Share
Revista Facultad de Ingeniería Universidad de Antioquia
Print version ISSN 0120-6230On-line version ISSN 2422-2844
Abstract
MONTOYA, Yimmy and AGUIRRE, Néstor. Dynamics of the primary production of phytoplankton in tropical lake through the flood pulse. Rev.fac.ing.univ. Antioquia [online]. 2010, n.55, pp.76-89. ISSN 0120-6230.
Compared to aquatic ecosystems in temperate zones, tropical flood plain lake systems are highly complex, and poorly understood. This work evaluated the variation of primary production and phytoplankton biomass in one station in Escobillitas swamp in the complex of Ayapel system, located in northern Colombia. Primary production presented variation in relation to the flood pulse, as it ranged from 0 (high water ascent in 2007) and 191.6 mgC m-2 d-1 (high water on the decline in 2007) with an average value of 108.6 mgC m-2 d-1. We found the highest gross primary production in high water falling, a condition accompanied by increased algal biomass photosynthetic efficiency, reduction low rates in respiration and the P / B and P / R. ratios. Between consecutive hydrological cycles variations in the patterns of primary production the high water rising in 2006 had a low biomass, high PPB, with the highest photosynthetic efficiency, and low respiration rates; in contrast, for the same period of the hydrological flood pulse in 2007, an increase in biomass and reducing of PPB, photosynthetic efficiency, P / B ratio and respiration were observed. The water system changed between euproductive and oligoproductive, which indicates a high trophic dynamics.
Keywords : Flood plain lake; phytoplankton; primary production; flood pulse; Escobillitas swamp; Ayapel.