Soil genesis on hypersaline tidal flats (apicum ecosystem) in a tropical semi-arid estuary (Ceará, Brazil) - Albuquerque, A. G. B. M; Ferreira, Tiago Osório; Nóbrega, Gabriel Nuto; Romero, Ricardo Espíndola; Souza Júnior, V. S; Meireles, A. J. A; Otero, Xosé Luís (Soil Research, 2014)