Víctor Parra-Tabla

Víctor Parra-Tabla
Universidad Autónoma de Yucatán | UADY · Department of Tropical Ecology

DR. Ecology

About

155
Publications
38,000
Reads
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3,060
Citations
Additional affiliations
August 2014 - present
Universidad Autónoma de Yucatán
Position
  • Lecturer
Description
  • Ms Course Sience and susteinabilty
August 2012 - present
UADY
Position
  • Lecturer
Description
  • Bs Course, Evolutionary ecology of biotic interactions
June 2009 - December 2009
The University of Northampton
Position
  • Visitant Professor

Publications

Publications (155)
Article
Co‐flowering communities are usually characterized by high plant generalization but knowledge of the underlying factors leading to high levels of generalization and pollinator sharing, and how these may contribute to network structure is still limited. Flowering phenology and floral trait similarity are considered among the most important factors d...
Article
Full-text available
Ant-plant interactions are widespread and have profound effects on plant fitness, food webs, and species diversity. Whereas most experimental work has tested for ant effects on herbivores, few studies have investigated ant effects on plant pathogens, and even less dual effects on herbivores and pathogens. In this work, we tested whether ants protec...
Article
Although insect herbivorous communities in tropical forests are known to exhibit strong seasonality, few studies have systematically assessed temporal patterns of variation in community structure and plant–herbivore interactions in early successional arboreal communities. We assessed seasonal and interannual variation of the diversity and compositi...
Article
Although commercial forest plantations have experienced a major growth in the tropics over the past decades, little attention has been paid to their role in the conservation of epigeal arthropod communities. We studied diversity patterns of the epigeal beetle community in monoculture and polyculture forest plantations with big-leaf mahogany (Swiete...
Article
The disruption of mutualisms by invasive species has consequences for biodiversity loss and ecosystem function. Although invasive plant effects on the pollination of individual native species has been the subject of much study, their impacts on entire plant‐pollinator communities are less understood. Community‐level studies on plant invasion have m...
Article
Full-text available
Elevational patterns in flowering phenology have been reported for trees, shrubs and herbs. However, for vascular epiphytes that rely on atmospheric sources for humidity and nutrients, and depend on phorophyte microhabitat, elevational patterns of variation are unknown. In this study, we described the flowering phenology of Tillandsia carlos-hankii...
Article
Background: Self-compatibility is common on endemic plant species, but pollen limitation and self-pollination could be risk factors. Study species: The endemic Cienfuegosia yucatanensis (Malvaceae), whose distribution is mainly restricted to the north coast of the peninsula of Yucatán, México. Questions: a) Are flowers of C. yucatanensis autonomo...
Article
1. The ecological dynamics of co-flowering communities are largely mediated by pollinators. However, current understanding of pollinator-mediated interactions primarily relies on how co-flowering plants influence attraction of shared pollinators, and much less is known about plan-plant interactions that occur via heterospecific pollen (HP) transfer...
Article
1.‐ Species’ floral traits and flowering times are known to be the major drivers of pollinator‐mediated plant‐plant interactions in diverse co‐flowering communities. However, their simultaneous role in mediating plant community assembly and plant‐pollinator interactions is still poorly understood. Since not all species flower at the same time, infe...
Article
Full-text available
Phenotypic changes in plants during domestication may disrupt plant-herbivore interactions. Because wild and cultivated plants have different habitats and some anti-herbivore defences exhibit some plasticity, their defences may be also influenced by the environment. Our goal was to assess the effects of domestication and the environment on herbivor...
Article
Full-text available
1. Tree diversity can exert a strong influence on consumers, but most studies have involved short‐term assessments. Consequently, we have a limited understanding of temporal variation in the effects of tree diversity on multi‐trophic communities and thus how tree diversity impacts ecological function. 2. We conducted a year‐long study in an experim...
Article
Full-text available
The consequences of climate change on ecosystems may depend largely on their effect on the distribution of species that play a key role in communities. The aim of this work was to model the potential distribution, current and future, of 5 key species of coastal dune vegetation of the Yucatán Peninsula. Particularly the expected changes in areas cur...
Article
Background: Pollen transfer via animals is necessary for reproduction by ~80% of flowering plants, and most of these plants live in multispecies communities where they can share pollinators. While diffuse plant-pollinator interactions are increasingly recognized as the rule rather than the exception, their fitness consequences cannot be deduced fr...
Article
Full-text available
The interactions between pairs of native and alien plants via shared use of pollinators have been widely studied. Community level studies however, are necessary in order to fully understand the factors and mechanisms that facilitate successful plant invasion, but these are still scarce. Specifically, few community level studies have considered how...
Article
Full-text available
Premise: Invasive plant species can integrate into native plant-pollinator communities, but the underlying mechanisms are poorly understood. Competitive interactions between invasive and native plants via heterospecific pollen (HP) and differential invasive HP effects depending on HP arrival time to the stigma may mediate invasion success, but the...
Article
Full-text available
Resumen En este trabajo se presenta la metodología empleada en la autoevaluación de los Cuerpos Académicos del Campus de Ciencias Biológicas y Agropecuarias de la Universidad Autónoma de Yucatán, México, a través de parámetros cuantitativos que permitieron visualizar la calidad y cantidad de la producción académica. Para llevar a cabo dicha autoeva...
Article
• The interspecific range of epigenetic variation and the degree to which differences between angiosperm species are related to geography, evolutionary history, ecological settings, or species‐specific traits, remain essentially unexplored. Genome‐wide global DNA cytosine methylation is a tractable “epiphenotypic” feature suitable to explore these...
Article
Full-text available
Species interactions are known to be key in driving patterns of biodiversity across the globe. Plant-plant interactions through heterospecifc pollen (HP) transfer by their shared pollinators is common and has consequences for plant reproductive success and foral evolution, and thus has the potential to infuence global patterns of biodiversity and p...
Preprint
Full-text available
The interactions between pairs of native and alien plants via shared use of pollinators have been widely studied. Studies of invasive species effects at the community level on the other hand are still scarce. Few community level studies, however, have considered how differences in the intensity of invasion, and degree of floral trait similarity bet...
Chapter
Flowers present visual and chemical signals that mediate the interaction between plants and pollinators, who transfer pollen between flowers of different plants while foraging for nectar and/or pollen. This process favours the sexual reproduction of plants and covers the energy requirements of floral visitors. Colour and floral scent, as well as th...
Article
Full-text available
1.The number of co‐flowering species, floral density and floral trait diversity can be major determinants of pollinator‐mediated plant‐plant interactions in a community. However, evaluation of how each one of these co‐flowering components affects the pollination success of a single focal plant species, and how these effects vary at different spatia...
Article
1.Plant induced defences play an important role in mediating interactions between insects and pathogens. Yet, the plant traits underlying these effects, the extended consequences for higher trophic levels (i.e. predators), and the implications for plant growth and reproduction have received little attention. 2.Here we asked whether simulated early...
Article
Full-text available
Background: Tropical sand dunes are ideal systems for understanding drivers of community assembly as dunes are subject to both deterministic and stochastic processes. However, studies that evaluate the factors that mediate plant community assembly in these ecosystems are few. Aims: We evaluated phylogenetic community structure to elucidate the role...
Article
Full-text available
Biodiversity affects the structure of ecological communities, but little is known about the interactive effects of diversity across multiple trophic levels. We used a large-scale forest diversity experiment to investigate the effects of tropical tree species richness on insectivorous birds, and the subsequent indirect effect on predation rates by b...
Article
Full-text available
La zona de pioneras de la duna costera es uno de los ambientes climáticos más extremos, en el cual las plantas han desarrollado adaptaciones morfológicas y fisiológicas que les permite tolerar las condiciones ambientales que confrontan. También han desarrollado estrategias para reproducirse sexualmente de forma exitosa. Asimismo, estos hábitats son...
Article
Premise of the Study There is growing interest in understanding plant–plant interactions via pollen transfer at the community level. Studies on the structure and spatial variability of pollen transfer networks have been valuable to this understanding. However, there is high variability in the intensity of sampling used to characterize pollen transf...
Article
1. It is broadly accepted that plant diversity influences plant–herbivore interactions, yet few studies have separated damage by different herbivore species and simultaneously tested for effects on herbivory and plant defences to elucidate the mechanisms underlying such effects. 2. This study tested for effects of tree species diversity on leaf dam...
Article
Background: Coastal ecosystems in Mexico remain understudied in spite of their ecological, economic, and conservation value and are being impacted by human activities along the coast. Knowledge on spatial patterns of plant species distribution that helps preserve these fragile ecosystems is crucial. Aims: We evaluated differences in species richnes...
Article
TreeDivNet is the largest network of biodiversity experiments worldwide, but needs to expand. We encourage colleagues to establish new experiments on the relation between tree species diversity and forest ecosystem functioning, and to make use of the platform for collaborative research.
Article
Full-text available
While plant intra-specific variation in the stoichiometry of nutrients and carbon is well documented, clines for such traits have been less studied, despite their potential to reveal the mechanisms underlying such variation. Here we analyze latitudinal variation in the concentration of leaf nitrogen (N), phosphorus (P), carbon (C) and their ratios...
Article
How plant species diversity affects traits conferring herbivore resistance (e.g., chemical defenses), as well as the mechanisms underlying such effects, has received little attention. One potential mechanism for the effect of diversity on plant defenses is that increased plant growth at high diversity could lead to reduced investment in defenses vi...
Article
Full-text available
In vitro studies using plant extracts suggest a relationship between their polyphenol contents and their anthelmintic (AH) activity against Haemonchus contortus. High polyphenol content appears to increase the efficacy of plant extracts against H. contortus as assessed by the larval exsheathment inhibition assay (LEIA) while appearing to reduce the...
Article
Full-text available
Animal pollination is responsible for the majority of the human food supply. Understanding pollination dynamics in agricultural systems is thus essential to help maintain this ecosystem service in the face of human disturbances. Surprisingly, our understanding of plant–pollinator interactions in widely distributed smallholder agricultural systems i...
Poster
Full-text available
Introducción Objetivo Identificar la relación del contenido de CT, FT y TT de extractos metanol:agua (70:30) de 10 especies de plantas y la actividad AH contra H. contortus evaluada en pruebas de desenvaine de L 3 (LEIA) y eclosión de huevos (EHA). Materiales y Métodos Algunos extractos de plantas de la selva baja de Yucatán, México, han sido evalu...
Article
Recent work has improved our understanding of the linkages between above- and below-ground interactions mediated by plants. However, relatively few of the studies conducted thus far have focused on muli-trophic interactions (i.e. beyond two trophic levels) and the influence of plant genetic intra-specific variation on these dynamics has rarely been...
Article
Forest fragmentation, habitat loss and isolation may have a strong effect on biodiversity in tropical forests. This can include modification of the genetic diversity and structure of plant populations. In this study, we assessed the genetic diversity and structure of the tree Manilkara zapota in 15 naturally formed fragments of semi-evergreen tropi...
Article
We documented the presence and abundance of spider species (Arachnida: Araneae) on young trees of Swietenia macrophylla, Ceiba pentandra and Cordia dodecandra found in an experimental plantation. Surveys of spider abundance and species identity conducted twice during the growing season indicated marked differences in web-building spider assemblages...
Article
Premise of study: The factors driving variation in species interactions are often unknown, and few studies have made a link between changes in interactions and the strength of selection. Methods: We report on spatial variation in functional responses by a seed predator (SP) and its parasitic wasps associated with the herb Ruellia nudiflora. We a...
Article
It is well known that animals can exert strong selective pressures on plant traits. However, studies on the evolutionary consequences of plant-animal interactions have mainly focused on understanding how these interactions shape trait means, while overlooking its potential direct effect on the variability among structures within a plant (e.g. flowe...
Article
Hummingbirds are important pollinators in the Neotropics and are also indicators of vegetation disturbance. In order to preserve them it is necessary to know the floral resources they use. In this study, we recorded the hummingbird species and the flowers they visited during part of the dry season (January-March 2013), in the Ría Lagartos Biosphere...
Article
The effects of producer diversity on predators have received little attention in arboreal plant communities, particularly in the tropics. This is particularly true in the case of tree diversity effects on web-building spiders, one of the most important groups of invertebrate predators in terrestrial plant communities. We evaluated the effects of tr...
Article
Pollen deposition and pollen tube formation are key components of angiosperm reproduction but intraspecific variation in these latter two has been rarely quantified. Documenting and partitioning (populations, plants and flowers) natural variation in these two aspects of plant reproduction can help uncover spatial mosaics of reproductive success and...
Article
Geographic variation in abiotic factors and species interactions is widespread and is hypothesized to generate concomitant patterns of species trait variation. For example, higher rates of herbivory at lower latitudes are thought to select for increased plant defences, although latitudinal variation in defences may also be influenced directly by ab...
Article
Premise of the study: Coflowering plants are at risk for receiving pollen from heterospecifics as well as conspecifics, yet evidence shows wide variation in the degree that heterospecific pollen transfer occurs. Evaluation of patterns and correlates of among- and within-species variation in heterospecific pollen (HP) receipt is key to understandin...
Article
Despite potential interactive effects of plant species and genotypic diversity (SD and GD, respectively) on consumers, studies have usually examined these effects separately. We evaluated the individual and combined effects of tree SD and mahogany (Swietenia macrophylla) GD on the arthropod community associated with mahogany. We conducted this stud...
Article
Plant diversity can influence predators and omnivores and such effects may in turn influence herbivores and plants. However, evidence for these ecological feedbacks is rare. We evaluated if the effects of tree species (SD) and genotypic diversity (GD) on the abundance of different guilds of insect herbivores associated with big-leaf mahogany (Swiet...
Article
The effects of tree diversity on herbivore–enemy interactions have received relatively little attention and even fewer studies have compared the relative influence of tree intra- versus interspecific diversity on such dynamics.We evaluated the effects of mahogany (Swietenia macrophylla) genotypic diversity and tree species diversity on parasitoid a...
Article
Background and aims: Studies that have evaluated the effects of heterospecific pollen (HP) receipt on plant reproductive success have generally overlooked the variability of the natural abiotic environment in which plants grow. Variability in abiotic conditions, such as light and water availability, has the potential to affect pollen-stigma intera...
Article
Full-text available
Ruellia nudiflora has shown a high potential to easily invade disturbed areas. Outcrossing rate and genetic structure and diversity in this species were examined along a climatic gradient in the Yucatán Peninsula (Mexico) in order to understand the effects of environmental heterogeneity – isolation by environment (IBE) – as well as correlation in h...
Article
Full-text available
Although the way in which multiple biotic interactions affect plant reproductive success has been assessed in sexually monomorphic plants, little is known about the joint influence of these interactions on the reproductive success and the consequences to the mating system of plants with sexual heteromor-phisms. Dimorphic cleistogamy is a sexual het...
Article
Although a number of investigations have concluded that lower latitudes are associated with increases in herbivore abundance and plant damage, the generality of this pattern is still under debate. Multiple factors may explain the lack of consistency in latitude–herbivory relationships. For instance, latitudinal variation in herbivore pressure may b...
Article
Although the eff ects of plant diversity on herbivores are contingent upon herbivore traits and the source of plant diversity (e.g. intra-and interspecifi c), most studies have analyzed these eff ects separately. We compared the eff ects of genotypic diversity of big-leaf mahogany Swietenia macrophylla with that of tree species diversity on two spe...