Publicaciones

@article{nokey,

title = {The DNA history of a lonely oak: Quercus humboldtii phylogeography in the Colombian Andes},

author = {Sofía Zorrilla-Azcué and Antonio González-Rodríguez and Ken Oyama and Mailyn A. González and Hernando Rodríguez-Correa},

doi = {10.1002/ece3.7529},

issn = {20457758},

year  = {2021},

date = {2021-01-01},

journal = {Ecology and Evolution},

volume = {11},

issue = {11},

pages = {6814-6828},

publisher = {John Wiley and Sons Ltd},

abstract = {The climatic and geological changes that occurred during the Quaternary, particularly the fluctuations during the glacial and interglacial periods of the Pleistocene, shaped the population demography and geographic distribution of many species. These processes have been studied in several groups of organisms in the Northern Hemisphere, but their influence on the evolution of Neotropical montane species and ecosystems remains unclear. This study contributes to the understanding of the effect of climatic fluctuations during the late Pleistocene on the evolution of Andean mountain forests. First, we describe the nuclear and plastidic DNA patterns of genetic diversity, structure, historical demography, and landscape connectivity of Quercus humboldtii, which is a typical species in northern Andean montane forests. Then, these patterns were compared with the palynological and evolutionary hypotheses postulated for montane forests of the Colombian Andes under climatic fluctuation scenarios during the Quaternary. Our results indicated that populations of Q. humboldtii have high genetic diversity and a lack of genetic structure and that they have experienced a historical increase in connectivity from the last glacial maximum (LGM) to the present. Furthermore, our results showed a dramatic reduction in the effective population size followed by an expansion before the LGM, which is consistent with the results found by palynological studies, suggesting a change in dominance in Andean forests that may be related to ecological factors rather than climate change.},

keywords = {genetic diversity and structure, historical connectivity, historical demography, Neotropical trees, Oaks, Phylogeography, Pleistocene, Quercus},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {High genetic diversity and stable Pleistocene distributional ranges in the widespread Mexican red oak Quercus castanea Née (1801) (Fagaceae)},

author = {Juan Manuel Peñaloza-Ramírez and Hernando Rodríguez-Correa and Antonio González-Rodríguez and Víctor Rocha-Ramírez and Ken Oyama},

doi = {10.1002/ece3.6189},

issn = {20457758},

year  = {2020},

date = {2020-01-01},

journal = {Ecology and Evolution},

volume = {10},

issue = {10},

pages = {4204-4219},

publisher = {John Wiley and Sons Ltd},

abstract = {The Mexican highlands are areas of high biological complexity where taxa of Nearctic and Neotropical origin and different population histories are found. To gain a more detailed view of the evolution of the biota in these regions, it is necessary to evaluate the effects of historical tectonic and climate events on species. Here, we analyzed the phylogeographic structure, historical demographic processes, and the contemporary period, Last Glacial Maximum (LGM) and Last Interglacial (LIG) ecological niche models of Quercus castanea, to infer the historical population dynamics of this oak distributed in the Mexican highlands. A total of 36 populations of Q. castanea were genotyped with seven chloroplast microsatellite loci in four recognized biogeographic provinces of Mexico: the Sierra Madre Occidental (western mountain range), the Central Plateau, the Trans-Mexican Volcanic Belt (TMVB, mountain range crossing central Mexico from west to east) and the Sierra Madre del Sur (SMS, southern mountain range). We obtained standard statistics of genetic diversity and structure and tested for signals of historical demographic expansions. A total of 90 haplotypes were identified, and 29 of these haplotypes were restricted to single populations. The within-population genetic diversity was high (mean hS = 0.72), and among-population genetic differentiation showed a strong phylogeographic structure (NST = 0.630 > GST = 0.266; p <.001). Signals of demographic expansion were identified in the TMVB and the SMS. The ecological niche models suggested a considerable percentage of stable distribution area for the species during the LGM and connectivity between the TMVB and the SMS. High genetic diversity, strong phylogeographic structure, and ecological niche models suggest in situ permanence of Q. castanea populations with large effective population sizes. The complex geological and climatic histories of the TMVB help to explain the origin and maintenance of a large proportion of the genetic diversity in this oak species.},

keywords = {genetic variation, historical demography, Mexican Highlands, Neotropical trees, Oaks, Phylogeography},

pubstate = {published},

tppubtype = {article}

}

@article{Rodriguez-Correa2017,

title = {Complex phylogeographic patterns indicate Central American origin of two widespread Mesoamerican Quercus (Fagaceae) species},

author = {Hernando Rodríguez-Correa and Ken Oyama and Mauricio Quesada and Eric J. Fuchs and Maura Quezada and Lilian Ferrufino and Susana Valencia-Ávalos and Alfredo Cascante-Marín and Antonio González-Rodríguez},

doi = {10.1007/s11295-017-1147-7},

issn = {16142950},

year  = {2017},

date = {2017-01-01},

journal = {Tree Genetics and Genomes},

volume = {13},

issue = {3},

publisher = {Tree Genetics & Genomes},

abstract = {The northern Neotropical region is characterized by a heterogeneous geological and climatic history. Recent studies have shown contrasting patterns regarding the role of geographic elements as barriers that could have determined phylogeographic structure in various species. Recently, the phylogeography and biogeography of Quercus species have been studied intensively, and the patterns observed so far suggest contrasting evolutionary histories for Neotropical species in comparison with their Holarctic relatives. The goal of this study was to describe the phylogeographic structure of two Neotropical oak species (Quercus insignis and Quercus sapotifolia) in the context of the geological and palaeoclimatic history of the northern Neotropics. Populations through the distribution range of both species were collected and characterized using nine chloroplast DNA microsatellite loci. Both oak species showed high levels of genetic diversity and strong phylogeographic structure. The distribution of genetic variation in Q. insignis suggested an influence of two major barriers, the Isthmus of Tehuantepec and the Nicaraguan Depression, while Q. sapotifolia exhibited a genetic structure defined by the heterogeneity of the Chortis highlands. The haplotype networks of both species indicated complex histories, suggesting that colonization from the Sierra Madre de Chiapas to central Mexico and from the north of the Nicaraguan Depression to the Costa Rican mountains may have occurred during different stages, and apparently more than one time. In conclusion, the phylogeographic structure of Neotropical oak species seems to be defined by a combination of geological and climatic events.},

keywords = {historical demography, Middle America, Neotropical trees, Palaeodistribution, Phylogeography},

pubstate = {published},

tppubtype = {article}

}