17 Works

Data from: Seed to seedling transitions in successional habitats across a tropical landscape

Marinés De La Peña-Domene, Henry F. Howe, Emiliano Cruz-León, Rita Jiménez-Rolland, Cesar Lozano-Huerta & Cristina Martínez-Garza
Recognition that tree recruitment depends on the balance between seed arrival and seedling survival has led to a surge of interest in seed-dispersal limitation and seedling-establishment limitation in primary forests. Virtually unaddressed are comparisons of this balance in mature and early successional habitats. We assessed seed rain and seedling recruitment dynamics of tree species in primary forest, secondary forest and pasture released from grazing in a tropical agricultural landscape. Seed to seedling ratios (seed effectiveness;...

Seed consumption by small fish follows peak seed availability in a tropical dry forest river

Elisabet Wehncke, Nestor Mariano, Vanessa Montes De Oca & Humberto Mejía-Mojica
Seed consumption and dispersal by fish has been more extensively described in natural Neotropical large river systems of Amazonia, where ichthyochory follows a seasonal gradient associated with a floodpulse that creates long-lasting seasonally flood zones. It has been shown that it is relevant in maintaining the plant community structure of wetlands, but its effects on plant communities in seasonal dry forests are largely unknown. The Amacuzac hydrological system, which runs through one of the most...

Return of forest structure and diversity in tropical restoration plantings

Luis Carlos Beltrán, Henry F. Howe & Cristina Martínez-Garza
Stepping-stone restoration plantings can reconcile conservation goals and local land use needs in highly fragmented ecosystems. We explored how initial planting composition influences recruiting plant species density, diversity, abundance, and forest structure in a 13-year-old restoration experiment in Los Tuxtlas, Veracruz, Mexico. Treatments included 8 fenced plantings with animal-dispersed species, 8 plantings with wind-dispersed species, 8 unplanted plots to favor natural succession, and 8 plots in the primary forest as reference sites. We predicted that...

Data from: Plantings accelerate restoration of tropical forest but assembly mechanisms appear insensitive to initial composition

Lanping Li, Marc W. Cadotte, Cristina Martínez-Garza, Marinés De La Peña-Domene & Guozhen Du
1. Phylogenetic and trait-based approaches to community ecology are increasingly being used to test for nonrandom community assembly and are now being applied to assessments of habitat restoration. A critical question for the restoration of tropical forests is how plantings influence the recruitment of new species, and specifically the phylogenetic and functional diversity of restored habitats. 2. We examined 8 years (2006-2014) of tropical forest recruitment in two restoration planting compositions (12 animal-dispersed and 12...

Data from: Globally, functional traits are weak predictors of juvenile tree growth, and we do not know why

C. E. Timothy Paine, Lucy Amissah, Harald Auge, Christopher Baraloto, Martin Baruffol, Nils Bourland, Helge Bruelheide, Kasso Daïnou, Roland C. De Gouvenain, Jean-Louis Doucet, Susan Doust, Paul V. A. Fine, Claire Fortunel, Josephine Haase, Karen D. Holl, Hervé Jactel, Xuefei Li, Kaoru Kitajima, Julia Koricheva, Cristina Martínez-Garza, Christian Messier, Alain Paquette, Christopher Philipson, Daniel Piotto, Lourens Poorter … & Andy Hector
1. Plant functional traits, in particular specific leaf area (SLA), wood density and seed mass, are often good predictors of individual tree growth rates within communities. Individuals and species with high SLA, low wood density and small seeds tend to have faster growth rates. 2. If community-level relationships between traits and growth have general predictive value, then similar relationships should also be observed in analyses that integrate across taxa, biogeographic regions and environments. Such global...

Data from: Transcriptomic analysis of skin pigmentation variation in the Virginia opossum (Didelphis virginiana).

Sergio F. Nigenda-Morales, Yibo Hu, James Beasley, Hugo A. Ruiz-Piña, David Valenzuela-Galván, Robert K. Wayne & James C. Beasley
Skin and coat pigmentation are two of the best-studied examples of traits under natural selection given their quantifiable fitness interactions with the environment (e.g. camouflage) and signaling with other organisms (e.g. warning coloration). Previous morphological studies have found that skin pigmentation variation in the Virginia opossum (Didelphis virginiana) is associated with variation in precipitation and temperatures across its distribution range following Gloger’s rule (lighter pigmentation in temperate environments). To investigate the molecular mechanism associated with...

Data from: Demographic costs and benefits of natural regeneration during tropical forest restoration

T. Trevor Caughlin, Marinés De La Peña-Domene & Cristina Martínez-Garza
For tropical forest restoration to result in long‐term biodiversity gains, native trees must establish self‐sustaining populations in degraded sites. While many have asked how seedling recruitment varies between restoration treatments, the long‐term fate of these recruits remains unknown. We address this research gap by tracking natural recruits of 27 species during the first 7 years of a tropical forest restoration experiment that included both planted and naturally regenerating plots. We used an individual‐based model to...

Data from: Multiple scaling behavior and nonlinear traits in music scores

Alfredo González-Espinoza, Hernan Larralde, Gustavo Martinez-Mekler & Markus Mueller
We present a statistical analysis of music scores from different composers using detrended fluctuation analysis. We find different fluctuation profiles that correspond to distinct auto-correlation structures of the musical pieces. Further, we reveal evidence for the presence of nonlinear auto-correlations by estimating the detrended fluctuation analysis of the magnitude series, a result validated by a corresponding study of appropriate surrogate data. The amount and the character of nonlinear correlations vary from one composer to another....

Even more oak species in Mexico? Genetic structure and morphological differentiation support the presence of at least two specific entities within Quercus laeta

Saddan Morales-Saldaña, Ken Oyama, Susana Valencia Ávalos, Efraín Tovar Sánchez, Andrew Hipp & Antonio González Rodríguez
Differentiation among populations, sometimes despite ongoing gene exchange, is a key step in speciation. Therefore, comparison of intra- and interspecific differentiation patterns is of great significance to understanding speciation. The genus Quercus is an interesting system to test speciation models in the presence of gene flow, due to its weak interspecific reproductive barriers. The aim of the present study was to characterize the degree and pattern of morphological and genetic differentiation among different morphotypes in...

A non-parametric model-free analysis of actigraphic recordings of acute insomnia patients

Arlex Marín-García, Ruben Fossion, Markus Franziskus Müller, Wady Ríos-Herrera & Ana Leonor Rivera
Both parametric and non-parametric approaches to time series analysis have advantages and disadvantages. Parametric methods, although powerful and widely used, can yield inconsistent results due to the oversimplification of the observed phenomena, they require the setting of arbitrary constants for their creation and refinement, and, although these constants relate to assumptions about the observed systems, it can lead to erroneous results when treating a very complex problem with a sizable list of unknowns. Their non-parametric...

The SONOZOTZ project: assembling an echolocation calls library for bats in a megadiverse country

Bat acoustic libraries are important tools that assemble echolocation calls to allow the comparison and discrimination to confirm species identifications. The Sonozotz project represents the first nation-wide library of bat echolocation calls for a megadiverse country. It was assembled following a standardized recording protocol that aimed to cover different recording habitats, recording techniques, and call variation inherent to individuals. The Sonozotz project included 69 species of echolocating bats, a high species richness that represents 50%...

Data from: Predator discrimination in the hermit crab Calcinus californiensis: tight for shell breakers, loose for shell peelers

Guillermina Alcaraz & Elsah Arce
Prey exposed to predators with different hunting and feeding modes are under different selective pressures, therefore it is expected that they should exhibit plastic and adaptive antipredator responses according to current risks. The hermit crab Calcinus californiensis faces two contrasting predators, the shell peeler Arenaeus mexicanus that hunts by active searching and the shell breaker Eriphia squamata that hunts by ambush. In order to discover whether C. californiensis displays plastic responses depending on the type...

Data from: Do metal mines and their runoff affect plumage color? A regional scale study of streak-backed orioles in south-central Mexico

Lynna M. Kiere, Marcela Osorio-Beristain, Valentino Sorani, David A. Prieto-Torres, Adolfo G. Navarro-Sigüenza & Luis Antonio Sánchez-González
Metal mining causes serious ecological disturbance, due partly to heavy metal (HM) pollution that can accumulate at mining sites themselves and be dispersed downstream as runoff. Plumage coloration is important in birds’ social and ecological interactions and sensitive to environmental stressors, and several local-scale studies have found decreased carotenoid-based plumage and/or increased melanin-based plumage in wild birds exposed to HM pollution. We investigated regional-scale effects of proximity to mines and their downstream rivers as a...

Data from: Food spoilage, storage, and transport: implications for a sustainable future

Sean T. Hammond, James H. Brown, Joseph R. Burger, Tatiana P. Flanagan, Trevor S. Fristoe, Norman Mercado-Silva, Jeffrey C. Nekola & Jordan G. Okie
Human societies have always faced temporal and spatial fluctuations in food availability. The length of time that food remains edible and nutritious depends on temperature, moisture, and other factors that affect the growth rates of organisms that cause spoilage. Some storage techniques, such as drying, salting, and smoking, date back to ancient hunter–gatherer and early agricultural societies and use relatively low energy inputs. Newer technologies developed since the industrial revolution, such as canning and compressed-gas...

Data from: Sexual signals reveal males’ oxidative stress defenses: testing the hypothesis in an invertebrate

Norma Martínez-Lendech, Maria J. Golab, Marcela Osorio-Beristain & Jorge Contreras-Garduño
1.The hypothesis that sexual traits reveal the oxidative stress resistance of their bearers has been widely tested in vertebrates but remains unexplored in invertebrates. Here, Hetaerina americana was used to test whether oxidative stress defenses are advertised by male wing spot size and color (a male sexual trait). To this end we asked (1) whether oxidative stress reduced survival, (2) whether wing spot size revealed males’ antioxidant defenses, and (3) how wing spot size and...

Data from: Connecting genomic patterns of local adaptation and niche suitability in teosintes

Jonas Aguirre-Liguori, Maud Tenaillon, Alejandra Vázquez-Lobo, Brandon Gaut, Juan Jaramillo-Correa, Salvador Montes-Hernandez, Valeria Souza, L. E. Eguiarte, J. P. Jaramillo-Correa & M. I. Tenaillon
The central-abundance hypothesis predicts that local adaptation is a function of the distance to the center of a species’ geographic range. To test this hypothesis, we gathered genomic diversity data from 49 populations, 646 individuals and 33,464 SNPs of two wild relatives of maize, the teosintes Zea mays ssp. parviglumis and Zea. mays. ssp. mexicana. We examined the association between the distance to their climatic and geographic centroids and the enrichment of SNPs bearing signals...

Data from: The relevance of gene flow with wild relatives in understanding the domestication process

Alejandra Moreno-Letelier, Jonas A Aguirre-Liguori, Daniel Piñero, Alejandra Vázquez-Lobo & Luis E Eguiarte
The widespread use of genomic tools has allowed for a deeper understanding of the genetics and the evolutionary dynamics of domestication. Recent studies have suggested that multiple domestications and introgression are more common than previously thought. However, the ability to correctly infer the domestication process depends on having an adequate representation of wild relatives. Cultivated maize (Zea mays spp. mays) is one of the most important crops in the world, with a long and a...

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  • Universidad Autónoma del Estado de Morelos
  • National Autonomous University of Mexico
  • University of Illinois at Chicago
  • Autonomous University of Yucatán
  • Sun Yat-sen University
  • University of Liège
  • Federal University of Southern Bahia
  • Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias
  • University of Georgia
  • Del Rosario University