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Morphometric study of lake Guatavita (Colombia) [Estudio morfométrico del lago Guatavita (Colombia)]

Authors: Rondón, C. A. R.; Zapata, Ángela María; Rondón, J. C. D.;

Morphometric study of lake Guatavita (Colombia) [Estudio morfométrico del lago Guatavita (Colombia)]

Abstract

[ES]En el lago Guatavita se estudiaron sus características morfométricas con el objeto de analizar las implicaciones de la morfología sobre su funcionamiento y discutir algunas hipótesis que existen sobre el origen del lago. El lago presenta una cubeta con una forma cónica, bajo desarrollo del perímetro, profundidad máxima de 30 m y profundidad relativa de 7,9%. La curva hipsográfica indica que el lago presenta un aumento constante del área de la sección con respecto a la profundidad. La forma del lago promueve una estratificación térmica que se mantiene durante ocho meses del año, un hipolimnio hipóxico y un fuerte gradiente en la conductividad y en la concentración de amonio. Estos resultados indican un papel muy importante de la profundidad sobre las características físicas y químicas del lago que a su vez determinan la dinámica de las comunidades biológicas y una baja productividad fitoplanctónica.

[EN]Morphometric characteristics of the Lake Guatavita were investigated in order to disclose possible connections with its ecological functioning and discuss some hypotheses that exist about the origin of this lake. The lake has a basin with a conical shape, low perimeter development, maximum depth of 30 m and relative depth of 7.9%. The hypsographic curve reveals a constant increase of the sectional area with depth. The lake shape promotes a permanent thermal stratification during eight months of the year with a hypoxic hypolimnion and a strong vertical gradient in the conductivity and ammonium concentration. These results indicate an important role of depth on the physical and chemical lake characteristics which in turn explain the dynamics of biological communities and are responsible for a relatively low phytoplankton primary productivity.

. Este trabajo se desarrolla bajo la financiación de los proyectos: Producción primaria fitoplanctónica de las zonas litoral y limnética en el lago de Guatavita (ID PRY 527) y La productividad de los lagos andinos: un problema de escala espacial y temporal (ID PRY 1408, N.º Colciencias 1203-13-203-99).

14 páginas, 4 figuras, 3 tablas.

Peer reviewed

Keywords

Phytoplankton primary production, Batimetría, Producción primaria fitoplanctónica, Bathymetry, Mountain lake, Lago de montaña, Limnología física, Physical limnology

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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