Aspects of population dynamics and feeding by piscivorous birds in the intermittently open Riet River estuary, Eastern Cape, South Africa.Published in:African Journal of Aquatic Science, 2011, v. 36, n. 1, p. 101, doi. 10.2989/16085914.2011.559706By:Froneman, P. W.;Blake, J. D.;Hulley, P.Publication type:Article