SciELO - Scientific Electronic Library Online

 
vol.25 número3Sucesión estacional de las asociaciones de los grupos taxonómicos del zooplancton en aguas superficiales de Bahía de Navidad, México (noviembre 2010-diciembre 2011)Abundancia y distribución de la cianobacteria picoplanctónica Synechococcus en Bahía de La Paz y Cuenca Carmen, Golfo de California (junio, 2001) índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • No hay artículos similaresSimilares en SciELO

Compartir


Hidrobiológica

versión impresa ISSN 0188-8897

Resumen

GONZALEZ CONTRERAS, Circe Guadalupe; ALCOCER, Javier  y  OSEGUERA, Luis Alberto. Clorofila a fitoplanctónica en el lago tropical profundo Alchichica: un registro de largo plazo (1999-2010). Hidrobiológica [online]. 2015, vol.25, n.3, pp.347-356. ISSN 0188-8897.

The temporal fluctuation of phytoplankton biomass has been well studied in temperate lakes. Opposite, tropical lakes lack equivalent studies, particularly those considering long-term monitoring. The aim of the present study is to uncover patterns in the temporal and vertical variation of the phytoplankton biomass in Lake Alchichica, Puebla, through considering twelve years (1999-2010) of vertical chlorophyll a profiles recorded on a monthly basis with a PNF-300 natural fluorescence profiler (Biospherical). We recognize a clear seasonal pattern in the chlorophyll a concentration with three maxima: a) during the winter circulation period throughout the water column, b) at the onset of the stratification, accumulated close to the surface, and c) along the well-established stratification, located at the metalimnetic deep chlorophyll maximum. This pattern is clearly related with the thermal behavior of the lake corresponding to warm-monomixis. It was observed a positive correlation with the mixed layer and a negative correlation with the euphotic zone. A time-series analysis ratified the annual cycle, however it did not identify interannual patterns or long-term trends; this is, Alchichica is regular and predictable year after year, with no relevant interannual differences along the studied period.

Palabras llave : Chlorophyll a; long term dynamics; oligotrophic lake; PNF-300; tropical lake.

        · resumen en Español     · texto en Español     · Español ( pdf )