diversity Article Genetic Structure and Connectivity of the Red Mangrove at Different Geographic Scales through a Complex Transverse Hydrological System from Freshwater to Marine Ecosystems 1 1, 2, Landy R. Chablé Iuit , Salima Machkour-M’Rabet * , Julio Espinoza-Ávalos y, Héctor A. Hernández-Arana 3 , Haydée López-Adame 4 and Yann Hénaut 5 1 Laboratorio de Ecología Molecular y Conservación, El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico 2 El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico 3 Laboratorio de Estructura y Función de Ecosistemas Costeros Tropicales (EFECT-LAB), El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico 4 ATEC Asesoría Técnica y Estudios Costeros SCP, Calle 63b, no. 221, fraccionamiento Yucalpetén, Mérida CP 97238, Yucatán, Mexico 5 Laboratorio de Etología, El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico * Correspondence:
[email protected]; Tel.: +(52)-983-835-0454 Sadly, our colleague Julio passed away before publication. y Received: 5 December 2019; Accepted: 24 January 2020; Published: 27 January 2020 Abstract: Mangrove forests are ecologically and economically valuable resources composed of trees morphologically and physiologically adapted to thrive across a range of habitats. Although, mangrove trees have high dispersion capacity, complexity of hydrological systems may lead to a fine-scale genetic structure (FSGS). The Transverse Coastal Corridor (TCC) is an interesting case of hydrological systems from fresh to marine waters where mangrove forests dominate.