ABSTRACT Leite, N.R.; Magalhaes. A.; Silva, L.M.; Andrade, T. P.; Matos, J. B.; Costa, A. K.;Pereira, L.C.C.; Flores-Montes, M.J., and Costa, R.M.da., 2016. Short and Medium Term Variation in the Dynamics of the Mesozooplankton Community of an Amazonian Estuary. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 218–222. Coconut Creek (Florida), ISSN 0749-0208. The aim of this study was to investigate the short- and medium-term variation in the dynamics of the zooplankton community, in a macrotidal estuary (the Taperacu) of the Amazon Coast of northern Brazil. This estuary has a characteristic funnel shape, with extensive sandbars running down the middle and current patterns typical of a shallow estuary, in addition to substantial seasonal variation. Fluctuations in zooplankton densities were analyzed in the context of the influence of the tidal cycl...