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Open AccessFeature PaperArticle

Genetic Structure and Connectivity of the Red Mangrove at Different Geographic Scales through a Complex Transverse Hydrological System from Freshwater to Marine Ecosystems

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Laboratorio de Ecología Molecular y Conservación, El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico
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El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico
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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
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ATEC Asesoría Técnica y Estudios Costeros SCP, Calle 63b, no. 221, fraccionamiento Yucalpetén, Mérida CP 97238, Yucatán, Mexico
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Laboratorio de Etología, El Colegio de la Frontera Sur. Av. Centenario km 5.5, Chetumal C.P. 77014, Quintana Roo, Mexico
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Author to whom correspondence should be addressed.
Sadly, our colleague Julio passed away before publication.
Diversity 2020, 12(2), 48; https://doi.org/10.3390/d12020048
Received: 5 December 2019 / Revised: 19 January 2020 / Accepted: 24 January 2020 / Published: 27 January 2020
(This article belongs to the Section Plant Diversity)
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. We evaluated genetic diversity and structure of Rhizophora mangle across a range of hydrological conditions within the TCC using inter-simple sequence repeat molecular markers. Sampling included four hydrological systems, two localities inside each system, and fringe and dwarf trees. Genetic differentiation was evaluated at local (<100 km) and fine (<10 km) scales through a set of analyses, and genetic diversity was evaluated at all scale levels and between fringe and dwarf physiognomic types. Rhizophora mangle exhibited a high genetic structure at both scales with high genetic diversity. The genetic structure observed among hydrological systems likely reflects the historical dispersion of mangroves, whereas the FSGS reflect contemporary processes such as seed dispersal restriction, habitat fragmentation, and local water flow regimes. A higher genetic diversity for dwarf than for fringe trees and differentiation between both physiognomic types at a fine-scale were observed and discussed.
Keywords: Rhizophora mangle; dwarf and fringe trees; inter-simple sequence repeats (ISSR); Mexico; spatial autocorrelation; Bayesian analysis Rhizophora mangle; dwarf and fringe trees; inter-simple sequence repeats (ISSR); Mexico; spatial autocorrelation; Bayesian analysis
MDPI and ACS Style

Chablé Iuit, L.R.; Machkour-M'Rabet, S.; Espinoza-Ávalos, J.; Hernández-Arana, H.A.; López-Adame, H.; Hénaut, Y. Genetic Structure and Connectivity of the Red Mangrove at Different Geographic Scales through a Complex Transverse Hydrological System from Freshwater to Marine Ecosystems. Diversity 2020, 12, 48.

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