Seasonal dynamics of zooplankton in Lake Huetzalin, Xochimilco (Mexico City, Mexico)
Por:
Garcia, CE, Nandini, S, Sarma, SSS
Publicada:
1 dic 2009
Categoría:
Aquatic Science
Resumen:
We quantified the seasonal changes in the zooplankton abundances collected from the Huetzalin Lake (Mexico City, Mexico) for two years (February 2003-January 2004 and then March 2005-February 2006). Selected physicochemical variables (Secchi depth, temperature, pH, conductivity, dissolved oxygen, phosphorus, nitrogen, carbon and chlorophyll a concentration) were also measured at the time of zooplankton collection. The data on zooplankton abundances and the physicochemical variables were subjected to multiple correlation analysis and we also derived Shannon-Wiener species diversity index. Secchi depth ranged from 9 to 65 cm. Generally the lake was alkaline (pH 7-12). The conductivity ranged from 500-1000mScm(-1), while the mean water temperature was 20.5 degrees C. Dissolved oxygen levels were generally > 3 mg L(-1) and were higher in the winter than warmer months. Nitrates (90-95 mu g L(-1)) and phosphates (.2-.5 mg L(-1)) indicated that the water was eutrophic. Chlorophyll a levels ra
Filiaciones:
Garcia, CE:
Univ Nacl Autonoma Mexico, Programa Posgrado Ciencias Biol, Mexico City 04510, DF, Mexico
Nandini, S:
Univ Nacl Autonoma Mexico, Div Invest & Posgrado, Lab Zool Acuat, Tlalnepantla 54090, Edo De Mexico, Mexico
Sarma, SSS:
Univ Nacl Autonoma Mexico, Div Invest & Posgrado, Lab Zool Acuat, Tlalnepantla 54090, Edo De Mexico, Mexico
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