Seasonal changes in the zooplankton abundances of the reservoir Valle de Bravo (State of Mexico, Mexico)

Changing water, phosphorus and nitrogen budgets for Valle de Bravo reservoir, water supply for Mexico City Metropolitan Area

“…Previous detailed spatial studies in VB , Nandini et al 2008) have shown it is horizontally homogeneous; therefore, the reservoir was treated as a single box.…”

“…7a) showed that fixation exceeded denitrification most of the time in VB. High N 2 fixation rates in VB can be sustained by the dominance of cyanobacteria (Nandini et al 2008) Table 2). This result should be verified by acetylene reduction studies.…”

Spatiotemporal variations of zooplankton community in a shallow tropical brackish lagoon (Sontecomapan, Veracruz, Mexico)

“…Some works confined to only one taxonomic group; for example, the distribution of freshwater rotifers are well documented (Rico-Martinez and Silva-Briano 1993; Nandini et al 2008), as where copepods in coastal (Álvarez-Silva and Gómez-Aguirre 2000; Pantaleón-López et al 2005;Álvarez-Cadena et al 2009), marine, and inland waters (Suárez-Morales and Reid 1998;Suárez-Morales 2004;Suárez-Morales et al 2011). Those studies that include the dynamics of the brackish zooplankton (Escamilla et al 2001;Pantaleón-López et al 2005;De Silva-Davila et al 2006) usually omit the smaller taxonomic groups like rotifers.…”

Zooplankton community structure in the presence of low levels of cyanotoxins: a case study in a high altitude tropical reservoir (Valle de Bravo, Mexico)

“…These fluctuations result in the instability of the system leading to low cyanobacterial bloom formation (Moustaka˗Gouni and Vardaka, 2006). In spite of higher concentrations of nitrogen and phosphorus, we found low levels of phytoplankton; so much so that the volume that was routinely filtered based on previous studies (Nandini et al, 2008) was inadequate in order to read the Chl a concentrations on a visible spectrophotometer. The other important physicochemical variables such as temperature, pH and dissolved oxygen were in the same range as has been reported in previous works (Ramírez-García et al, 2002;Contreras et al, 2009).…”

“…In spite of the importance of studies on the zooplankton community size structure, there has been very little work done in this regard in Mexican water bodies. Seasonal variations on the plankton of Valle de Bravo began a decade ago (Ramírez-García et al, 2002) with emphasis on the density and diversity of rotifers, cladocerans and copepods (Nandini et al, 2008;Contreras et al, 2009). Although these studies present a formidable data base of information on the zooplankton of the reservoir they do not discuss their results in terms of zooplankton size.…”