Bats of Northwestern Durango, Mexico: Species Richness at the Interface of Two Biogeographic Regions

Torres-Morales, Laura; García-Mendoza, Diego F.; López‐González, Celia; Muñiz-Martínez, Raúl

doi:10.1894/mlk-12.1

Cited by 14 publications

(8 citation statements)

References 17 publications

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“…These samples are from two centers of Mexican oak diversity (Torres‐Miranda et al ., , ; Rodríguez‐Correa et al ., ) and may reflect even higher species diversity in areas already known for high diversity. Notably, one of the youngest groups in the white oaks is located in the Sierra Madre Occidental, which harbors great habitat diversity in relatively small areas (Torres‐Morales et al ., ). Our data raise the question of whether the rugged and relatively young topography, a product of magmatism and subduction processes that lasted until 12 Ma (Ferrari et al ., ), and the convergence of temperate and tropical climates shaped the high diversification rates in this region.…”

Section: Discussionmentioning

confidence: 97%

Genomic landscape of the global oak phylogeny

et al. 2019

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The tree of life is highly reticulate, with the history of population divergence emerging from populations of gene phylogenies that reflect histories of introgression, lineage sorting and divergence. In this study, we investigate global patterns of oak diversity and test the hypothesis that there are regions of the oak genome that are broadly informative about phylogeny.We utilize fossil data and restriction-site associated DNA sequencing (RAD-seq) for 632 individuals representing nearly 250 Quercus species to infer a time-calibrated phylogeny of the world's oaks. We use a reversible-jump Markov chain Monte Carlo method to reconstruct shifts in lineage diversification rates, accounting for among-clade sampling biases. We then map the > 20 000 RAD-seq loci back to an annotated oak genome and investigate genomic distribution of introgression and phylogenetic support across the phylogeny.Oak lineages have diversified among geographic regions, followed by ecological divergence within regions, in the Americas and Eurasia. Roughly 60% of oak diversity traces back to four clades that experienced increases in net diversification, probably in response to climatic transitions or ecological opportunity.The strong support for the phylogeny contrasts with high genomic heterogeneity in phylogenetic signal and introgression. Oaks are phylogenomic mosaics, and their diversity may in fact depend on the gene flow that shapes the oak genome.

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Section: Discussionmentioning

confidence: 97%

Genomic landscape of the global oak phylogeny

et al. 2019

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“…Interestingly, the observed divergence between northern Mexico and the Jalisco and Oaxaca samples in these examples appear to correlate with the formation of the Tepic-Zacoalco rift 5.5 Ma in the Jalisco block (Ferrari & Rosas-Elguera, 2000) and not with climatic transitions during the Pleistocene, which has been argued to be more a period of population movement than of speciation in the neotropics (Bennett et al ., 2012). Notably, one of the youngest groups in the white oaks is located in the Sierra Madre Occidental, which harbors great habitat diversity in relatively small areas (Torres-Morales et al ., 2010). The rugged and relatively young topography, a product of magmatism and subduction processes that lasted up through 12 Ma (Ferrari et al ., 2018), and the convergence of temperate and tropical climates shaped the high diversification rates.…”

Section: Discussionmentioning

confidence: 99%

Genomic landscape of the global oak phylogeny

Hipp

Manos

Hahn

et al. 2019

Preprint

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41• The tree of life is highly reticulate, with the history of population divergence buried amongst 42 phylogenies deriving from introgression and lineage sorting. In this study, we test the 43 hypothesis that there are regions of the oak (Quercus, Fagaceae) genome that are broadly 44 informative about phylogeny and investigate global patterns of oak diversity. 45• We utilize fossil data and restriction-site associated DNA sequencing (RAD-seq) for 632 46 individuals representing ca. 250 oak species to infer a time-calibrated phylogeny of the world's 47• The support we find for the phylogeny contrasts with high genomic heterogeneity in 56 phylogenetic signal and introgression. Oaks are phylogenomic mosaics, and their diversity may 57 in fact depend on the gene flow that shapes the oak genome. 58 59

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“…Species turnover occurs from north to south, but because of the orographic complexity of Mexico (Fig. ) there is also strong turnover from east to west, and from lowlands to highlands across relatively short geographic distances (Navarro and León‐Paniagua 1995, Torres‐Morales et al ). At a continental scale, the importance of these effects probably is secondary, and the latitudinal effect on β‐diversity manifests (Willig and Sandlin , Stevens and Willig ).…”

Section: Discussionmentioning

confidence: 99%

Ecological biogeography of Mexican bats: the relative contributions of habitat heterogeneity, beta diversity, and environmental gradients to species richness and composition patterns

López‐González¹,

Presley

Lozano³

et al. 2014

Ecography

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Mexico has higher mammalian diversity than expected for its size and geographic position. High environmental hetero geneity throughout Mexico is hypothesized to promote high turnover rates (β‐diversity), thus contributing more to observed species richness and composition than within‐habitat (α) diversity. This is true if species are strongly associated with their environments, such that changes in environmental attributes will result in changes in species composition. Also, greater heterogeneity in an area will result in greater species richness. This hypothesis has been deemed false for bats, as their ability to fly would reduce opportunities for habitat specialization. If so, we would expect no significant relationships between 1) species composition and environmental variables, 2) species richness and environmental heterogeneity, 3) β‐diversity and environmental heterogeneity. We tested these predictions using 31 bat assemblages distributed across Mexico. Using variance partitioning we evaluated the relative contribution of vegetation, climate, elevation, horizontal heterogeneity (a variate including vegetation, climate, and elevational heterogeneity), spatial variation (lat‐long), and vertical hetero geneity (of vegetation strata) to variation in bat species composition and richness. Variation in vegetation explained 92% of the variation in species composition and was correlated with all other variables examined, indicating that bats respond directly to habitat composition and structure. Beta‐diversity and vegetational heterogeneity were significantly correlated. Bat species richness was significantly correlated with vertical, but not horizontal, heterogeneity. Nonetheless, neither horizontal nor vertical heterogeneity were random; both were related to latitude and to elevation. Variation in bat community composition and richness in Mexico were primarily explained by local landscape heterogeneity and environmental factors. Significant relationships between β‐diversity and environmental variation reveal differences in habitat specialization by bats, and explain their high diversity in Mexico. Understanding mechanisms acting along environmental or geographic gradients is as important for understanding spatial variation in community composition as studying mechanisms that operate at local scales.

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Bats of Northwestern Durango, Mexico: Species Richness at the Interface of Two Biogeographic Regions

Cited by 14 publications

References 17 publications

Genomic landscape of the global oak phylogeny

Genomic landscape of the global oak phylogeny

Genomic landscape of the global oak phylogeny

Ecological biogeography of Mexican bats: the relative contributions of habitat heterogeneity, beta diversity, and environmental gradients to species richness and composition patterns

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