Resumen del producto

Although mangroves are important for associated fishes, few studies have addressed this habitat in arid conditions. The present study analyzed the functional and taxonomic diversity of arid mangroves in northwest Mexico to identify region-level consistency. We implemented field surveys and gathered available scientific information from three sites within the Gulf of California and from one site outside of the gulf with estuarine conditions to compare the results. With a morpho-structural analysis, we obtained 13 functional traits and calculated functional richness, dispersion, and redundancy. We also computed the taxonomic distinctness and the variation in taxonomic distinctness. We found functional convergence in the community traits due to the similarities in the environmental conditions, with no significant differences among sites (Anosim, R: 0.001824, P: 0.4648), because ecological efficiency should be operating at a similar trophic level in every locality due to the transitory conditions of the habitat. In particular, northern sites within the Gulf of California had higher values for all functional indices and lower functional redundancy than the outside location of Nayarit due to a higher percentage of species with a more specialized morphology. The taxonomic diversity showed a latitudinal gradient, and significant statistical variation was found across localities within the Gulf of California (although Sinaloa leaves the probabilistic tunnel), but the position of Nayarit had a higher variance. Further analysis should focus on the seasonal variation of environmental factors 

Palabras clave: mangrove; FISH; Baja California Sur

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