Jordan Golubov

• Professor (Full) at Metropolitan Autonomous University

Germination traits are components of invasion potential, and comparing seed traits in sympatric native and invasive species can offer insights into the invasion process. We characterized seed germination traits and how they influenced the success of Eragrostis mexicana, a native species, and Eragrostis tenuifolia, an exotic species (Poaceae) in Mex...

The invasion of non-native species is one of the main threats to biodiversity conservation and the provision of ecosystem services. Mangroves are one of the most vulnerable ecosystems worldwide due to invasive alien species (IAS), as they can destabilize the structure and function of trophic webs and reduce their primary productivity, mainly throug...

Simple Summary There is increasing evidence of declining bee populations due to anthropogenic factors. We assessed the abundance of nine wild bee species over a four-year study period, estimating changes through monthly captures. Apis mellifera, the Lasioglossum (Dialictus spp.) complex, and Macrotera sinaloana had the largest population sizes and...

Correct species identification is critical for studies on biodiversity, ecology, and conservation. Determining Opuntia s.s. species is difficult because they have similar traits and are phenotypically plastic. Taxonomic keys are based on vegetative traits rather than reproductive ones such as flowers, because they are assumed to be too similar. We...

Background and aims – Understanding the traits that lead to the invasion potential of invasive alien species (IAS) provides insight for their management. The reproductive traits of IAS help us understand the mechanisms that allow for their invasive potential, and colonization into new ranges. Asphodelus fistulosus is a native Mediterranean species...

Phenology studies the time at which events in the life cycle of a species occur sand how they are related to environmental cues. Patterns of change in phenology at different scales can be used as an indicator of ecosystem changes and climate change, but the data necessary to detect these changes can be difficult to obtain due to their temporal and...

Bee population ecology is essential to determine and react to environmental impacts that affect population persistence. Land use change and pesticides lead to decreased populations, however, it is difficult to estimate their impact because information of wild bee populations is limited, even though they are important pollinators of flowering plants...

The behavior of bees is modulated by the presence of other bees and potentially by the visual information transmitted by the different body positions of bees while visiting flowers. We tested whether bee body position promoted the attraction and/or antagonistic behavior of con- and hetero-specific bees that interacted on prickly pear flowers of Opu...

Mesembryanthemum crystallinum o “vidrillo” es una planta suculenta invasora que reduce lariqueza y la biomasa de las especies en las áreas que invade. Se presenta un diagnóstico de laszonas invadidas y se precisa la información sobre su fenología reproductiva para determinar losmomentos de control. Los registros de herbario en gbif y de presencia e...

Background and aims - Understanding the traits that lead to the invasion potential of alien invasive species (AIS) provides insight for their management. The reproductive traits of AIS help us to understand the mechanisms that allow for their invasive potential, and colonization into new ranges. Asphodelus fistulosus is a native Mediterranean speci...

Antecedentes: Los bosques de Pinus pinceana en Tamaulipas crecen en condiciones de aridez en la Sierra Madre Oriental. Es importante conocer la composición y diversidad florística, además de los parámetros estructurales útiles para futuros programas de conservación. Preguntas: ¿Cómo es la estructura, composición y diversidad florística de la veget...

In tropical deciduous forests (TDF), the scaling relations between size attributes in columnar cacti vary across species, partially because of environmental pressures to reach the canopy. This study aims to compare the growth-related allometric relationships between Pilosocereus leucocephalus (Poselg.) Byles & G.D. Rowley and Cephalocereus scopariu...

Until recently, little research has focused on determination of the population dynamics of invasive species and evaluating their genetic variation. Consequently, not much is known of what drives clonal invasive species and their demography. Here, we describe the population dynamics of Kalanchoe delagoensis (Crassulaceae), considered invasive to sev...

The maintenance of interactions between plants and their floral visitors depends on factors such as resource variability, seasonality, and population dynamics. Changes in water availability along with different types and levels of anthropogenic disturbance may influence how plants and pollinators interact, especially in arid environments. In a semi...

Este artículo se encuentra bajo los términos de la licencia Creative Commons Attribution License CCBY-NC (4.0) internacional. https://creativecommons.org/licenses/by-nc/4.0/ Resumen Antecedentes: Los bosques de Pinus pinceana en Tamaulipas crecen en condiciones de aridez en la Sierra Madre Oriental. Es importante cono-cer la composición y diversida...

Until recently, little focus has been given to determine the population dynamics of invasive species and evaluate their genetic variation. Consequently, not much is known of what drives clonal invasive species and their demography. Here we describe the population dynamics of Kalanchoe delagoensis (Crassulaceae), considered invasive to several count...

The dynamics of plant populations are often limited by the early stages in their life cycles. However, information regarding seed bank dynamics and how these may influence the whole life cycle of plant species is remarkably scarce or not considered explicitly. This lack of knowledge is due mainly to the challenges in quantifying seed vital rates. S...

Germination is a fundamental process in cacti life cycles. The evaluation of germination in habitat may face some methodological concerns, such as the loss of seeds by biotic and abiotic factors and the cross contamination of experimental plots with foreign seeds. We evaluated the viability of a method for the germination Cephalocereus polylophus (...

Seeds and seedlings are the most critical stages of cacti life cycles. From the thousands of seeds produced in a reproductive season, only a small fraction successfully germinate, the rest are lost to predation, go dormant, and remain viable in the seed bank, or lose viability. These early stages often depend on facilitation by nurse plants for ger...

A nurse–protégé relationship is a frequent facilitation interaction in deserts that allows the recruitment of new individuals of many species. Our aim wasto evaluate the relationship of Echinocereus enneacanthus during its life cycle and its nurse plants in the brousse tigrée (tiger bush) vegetation of the Chihuahuan Desert. The population structur...

The success of biological invasions depends on two important components: The set of species traits that improves their ability to become invasive (invasiveness) and characteristics of the receiving ecosystem (invasive potential). Descriptions of these two components have yielded information that can lead to evaluate the risk posed by a specific spe...

Mexico's historical, biogeographical, and environmental conditions are the main drivers of its high biological diversity. However, this biodiversity poses significant challenges because there is an increasing threat of invasive alien species (IAS) due to the large availability and diversity of suitable habitats, increased propagule pressure through...

Seeds and seedlings are the most critical stages of cacti life cycles. From the thousands of seeds produced in a reproductive season, only a small fraction successfully germinate, the rest are lost to predation, go dormant and remain viable in the seed bank or lose viability. These early stages often depend on facilitation by nurse plants for germi...

Seed and seedling are the most critical stages of cacti life cycle. From the thousands of seeds produced in a reproductive season, only a small fraction gets to germinate, the rest gets lost due to predation or gets potentially buried in the seed bank. These early stages depend on facilitation by nurse plants for germination and seedling recruitmen...

The dynamics of plants populations are often limited by the early stages in their life cycles. The question if the columnar cacti have or not a seed bank in predictable environments. Yet, information regarding seed bank dynamics and how these may influence the full life cycle of plant species is remarkably scarce or ignore. This lack of knowledge i...

Desert plants have several adaptations to cope with harsh environmental conditions; these adaptations range from the ability to store water to the diversification of reproductive modes, displaying sexual reproduction and clonality. Grusonia bradtiana is an endemic cactus from Coahuila which dominates vegetation at bajada landforms of Cuatro Ciénega...

Bajadas are transition zones between the foothills of the mountainous areas and the valleys in the arid zones of North America; given their microclimatic characteristics (geomorphological composition, high humidity, and low solar radiation) they are probably a refuge for many plant species; however, there are no reports for the bajadas in the Cuatr...

Lophophora williamsii, commonly known as “peyote” or “divine cactus”, has a wide distribution in the Chihuahuan Desert, but is under threat due to over-harvesting for religious ceremonies or psychedelic tourism, and many populations no longer exist. Natural populations can be rehabilitated or aided by sowing seeds or reintroducing specimens, which...

La globalización, con el incremento de transporte de mercancías y personas, trae consigo la introducción de otros seres vivos, de tal manera que estamos facilitando el movimiento de especies que naturalmente no podrían llegar a regiones lejanas. Esto ocurrió con el SARS-CoV-2, que a partir de la detección, en poco menos de tres meses se volvió una...

Reproductive systems are life attributes important in defining the demography and genetic constitution of invasive alien species populations. We describe the phenology, floral behavior and floral visitors in Mexican populations of Leonotis nepetifolia considered invasive in America, Asia and Oceania. The mating system was determined through pollina...

Hypothesis: Temperature and desiccation will increase growth rates in Agalychnis moreletii tadpoles, reducing size at metamorphosis and other morphological traits. Time to metamorphosis will also be reduced for frog lets, and synchrony of metamorphosis will be decoupled. Organism: Tadpoles and early frog lets of the black-eyed tree frog (Agalychnis...

The Semi-Arid Zone of Querétaro and Hidalgo (SAZQH), central México, is a relevant place in terms of richness, endemism, and threatened species of Cactaceae. The region has been inhabited and transformed along the ages; modifications include regional infrastructure milestones that have done irreversible damages to key, emblematic Cactaceae species....

Conservation of mangrove ecosystems is one of the major global environmental challenges of this century. To propose viable strategies for its conservation, it is necessary to produce an adequate cartography that enables, among other things, accurate differentiation among plant communities. Google Earth Pro (GEP) images were evaluated as a tool to c...

Rhizophora mangle is the most common species of mangrove within its range and a major component of coastal ecosystems in the tropics and subtropics. Its phenology is affected by seasonal variations in temperature, salinity, and precipitation, all of which may be altered by impending climate change. In this work, the monthly leaf, flower, and fruit...

The diverse offspring of clonal species differ in their dispersability, influencing genotypic diversity and clonal structure. Here, we determined dispersal patterns and their impact on genetic structure in Opuntia microdasys, a self‐incompatible cactus with three dispersal units (one sexual and two clonal). We analyzed dispersal, using experiments...

The cottontail rabbit Sylvilagus floridanus (J.A. Allen, 1990) and white-sided jackrabbit Lepus callotis (Wagler, 1830), coexist in the semiarid valley of Perote, Veracruz an area under continuous changes in land use and frequent anthropogenic impact of induced fires. We describe the formation of lagomorphs latrines, their composition, size and dis...

Alien invasive species have strategies that can maintain fitness in a variety of environments. This flexibility is associated with environmental tolerance in several traits, such as allocation of resources to shoots versus roots, clonal versus sexual reproduction, and survival of seedlings. These traits were explored in the chandelier plant ( Kalan...

Resumen Las especies invasoras son consideradas un problema mundial. Asphodelus fistulosus ha sido reportada como exótica invasora en distintos países y en México se tiene el registro en 15 entidades. Se realizó un experimento de germinación con 350 semillas a 4, 8 y 12 meses de colecta. El resultado del porcentaje de germinación de las semillas fu...

Educar para prevenir los visitantes no deseados julio/agosto 2018 | 94 Educar para prevenir: los visitantes no deseados y ¿qué son las especies invasoras? Educate to prevent: unwanted visitors and what are alien invasive species? Resumen Las invasiones de especies no nativas han sido por mucho tiempo un tema silencioso, pero con un impacto difícilm...

The introduction of the honey bee, Apis mellifera L. (Hymenoptera: Apidae), into the arid environments of Mexico has affected the behavioral ecology of native bees. We described the behavioral repertoire and interactions between A. mellifera and the native bee Lithurgus littoralis Cockerell (Hymenoptera: Megachilidae) on Opuntia huajuapensis Bravo...

Mexico has one of the highest diversities of barrel cacti species worldwide; however, all are threatened and require conservation policies. Information on their reproductive biology is crucial, but few studies are available. Ferocactus recurvus subsp. recurvus is a barrel cactus endemic to the Tehuacán‐Cuicatlán Valley. Our research aimed to charac...

Arid and semi-arid environments contain relatively high species diversity and are subject to intense use, in particular extensive cattle grazing. The expansion of perennial species in to the grasslands decreases the value of the rangeland, because it makes necessary to control the shrubs, which is not practical in the long term. This paper is a bib...

In their Letter “Mexico's ambiguous invasive species plan” (10 March, p. [1033][1]), L. M. Ochoa-Ochoa et al. claimed that the Mexican invasive species list ([ 1 ][2]) is incomplete and ambiguous. They were not considering the list in the appropriate context. The invasive species list is

Antecedentes y Objetivos: La familia Cactaceae tiene el mayor número de especies listadas en riesgo de extinción, pero la información biológica y poblacional de estas especies, necesaria para determinar su riesgo poblacional y su estatus de conservación en las listas rojas, es escasa o insu-ficiente. El estatus de Astrophytum ornatum es vulnerable,...

In community ecology, the knowledge of abiotic factors, that determine intraspecific variability in ecophysiological and functional traits, is important for addressing major questions, such as plant community assembly and ecosystem functioning. Mangroves have several mechanisms of resistance to salinity and most species exhibit some xeromorphic fea...

Seed aggregation in latrines of rabbits is a little-studied process that may contribute substantially to seed dispersal and survival. We located Juniperus deppeana trees and the latrines used by the endemic Mexican cottontail rabbit Sylvilagus cunicularius within a 1 ha fragment of J. deppeana-dominated forest and evaluated their patterns of aggreg...

El género Mammillaria es de los más diversificados dentro de la familia Cactaceae, México es su centro de diversificación, y los estudios que analicen detalladamente los ciclos de vida de especies pertenecientes a este género son necesarios para determinar el estado de sus poblaciones y planear estrategias de conservación. Mammillaria humboldtii (C...

The niche breadth of a species reflects its ability to inhabit different conditions, and to use different resources, hence, species with wider niche are expected to be more resilient to anthropogenic derived climate change. We estimated the niche breadth of all species of the genus Astrophytum from macro-environmental variables and measures of loca...

Mammillaria humboldtii is a globose cactus, endemic to the state of Hidalgo, prized by collectors and subject to illegal logging so is currently listed as endangered. A population was studied in the Biosphere Reserve Metztitlán Canyon, Hidalgo order to describe some aspects related to the reproductive biology of the species, such as flowering ph...

Introducción La fenología estudia los ciclos de los seres vivos en relación con los factores climáticos. Los manglares son plantas que se desarrollan en las costas de las regiones tropicales, altamente vulnerables a los efectos tempranos del cambio climático, como el aumento del nivel del mar, intrusión salina, cambios en la precipitación, y cambio...

Insect-pollinated plants offer nectar as the main reward, which influences the preference of flower visitors. We describe the feeding behavior of the exotic bee Apis mellifera (L.) (Hymenoptera: Apidae) and the flower fly Lycastrirhyncha nitens (Bigot) (Diptera: Syrphidae) on tristylous flowers of Pontederia sagittata (C. Presl) (Commelinales: Pont...

Introducción al lenguaje R y manual del paquete Popbio, ecología de poblaciones.

Kalanchoe delagoensis, K. daigremontiana and their hybrid (Houghton’s hybrid) are invasive in tropical regions. One outstanding feature of these Madagascan succulent plants is the growth of clonal propagules from the margin of their leaves. Using eight microsatellite loci, we estimated the genetic diversity of introduced populations of these specie...

Premise of research. Plant sexuality evolves in response to genetic and ecological pressures that shape mating systems and floral traits. Comparing such systems and traits within phylogenies can show evolutionary trends in reproduction and floral morphology without the problems posed by the nonindependence of species. We compared sexual systems in...

By influencing the exchange of pollen, floral visitor behavior largely promotes the reproductive success of the plants. Pontederia sagittata (C. Presl) (Commelinales: Pontederiaceae) is a tristylous species whose morphs (long-styled L, mid-styled M and short-styled S) differ in the arrangement of reproductive organs and the amounts and accessibilit...

Risk analyses for invasive species have been developed recently in Mexico as part of an effective invasive species management. These methods allow an analysis that takes into account information on the fac- tors that determine the probability of introduction, establishment, dispersal, and severity of such species. In this chapter, we developed an a...

Mexico owns a vast range of water related resources linked to aquatic environments that contribute significantly to commercial activities and there is a concern about the potential impact related to the introduction of invasive alien species (IAS) to these areas. The National Strategy on Invasive Species was published in 2010 establishing the guide...

Seed production and the recruitment of new individuals are in part related to reproductive traits such as floral behaviour, phenology, production of sexual gametes, nectar, mating and breeding systems, and population densities. We studied the floral biology, nectar production, and pollination of Mammillaria huitzilopochtli D.R.Hunt in ex situ condi...

We studied the floral biology, floral visitors, levels of florivory, and mating system of Opuntia macrocentra in a population of ca. 300 individuals in order to describe what factors affect flower/fruit ratios. Blooming for the species occurred once a year during spring. Flowers were hermaphroditic, produced nectar, and remained open 6 to 9 h durin...

Seed production and the recruitment of new individuals are in part related to reproductive traits such as floral behaviour, phenology, production of sexual gametes, nectar, mating and breeding systems, and population densities. We studied the floral biology, nectar production, and pollination of Mammillaria huitzilopochtli D.R.Hunt in ex situ condi...

The response of seed germination towards light and the relationship to seed traits has been studied particularly well in tropical forests. Several authors have shown a clear adaptive response of seed size and photoblastism, however, the evolutionary significance of this relationship for species inhabiting arid environments has not been fully unders...

The semi-arid zone of Querétaro and Hidalgo, in Central Mexico, is an important region for cactus conservation. Mammillaria herrerae Werderm. is a species of local distribution with a threatened conservation status, partly because it has been historically plundered. An exhaustive census of all individuals was made to assess the current status of th...

Background/Question/Methods Sexual systems evolve by preventing inbreeding depression and responding to ecological factors that limit fitness, such as rarity. We compared sexual systems in the monophyletic genus Ariocarpus to determine whether biogeographic rarity and reproductive traits were related. Additionally, we compared floral morphology am...

Background/Question/Methods Biological invasions constitute a major threat to global diversity because invasive species can compete with or displace native species. Clonality is a common feature among invasive plant species because promotes long-distance dispersal and local persistence. Kalanchoe delagoensis, a succulent plant native to Madagasca...

Background/Question/Methods Kalanchoe delagoensis (Crassulaceae) is an invasive species in countries like United States, South Africa and Australia, and is naturalized in Mexico. This plant is known as “mother of millions” because of the numerous plantlets that grow from the margin of their leaves. Our objective was to identify light and water con...

Mammillaria cielensis (Cactaceae), a new species of Cactaceae from "El Cielo" Biosphere reserve (RBC) in Tamaulipas, Mexico, is described and illustrated. The new species is similar to M. zublerae repp., differing from this species in the size of the stem, the rounded form of the apex, the smaller tubercles, the areoles with white wool, the more nu...

The spatial distribution patterns of genets and ramets within populations are expected to change as a function of the frequency with which clonal species recruit different types of offspring (sexual and clonal). We used an integrated approach to study the spatial arrangement of clonal plants by combining molecular and ecological data using Opuntia...

Se propone a Mammillaria cielensis (Cactaceae), como una especie nueva de la Reserva de la Biosfera “El Cielo” (RBC) en Tamaulipas, México. Es morfológicamente muy similar a M. zublerae Repp., de la cual difiere en el tamaño del tallo, la forma redondeada del ápice, los tubérculos de menor tamaño y glabros, aréolas con lana blanca, las espinas radi...

Mammillaria cielensis (Cactaceae), a new species of Cactaceae from "El Cielo" Biosphere Reserve (RBC) in Tamaulipas, Mexico, is described and illustrated. The new species is similar to M. zublerae Repp., differing from this species in the size of the stem, the rounded form of the apex, the smaller tubercles, the areoles with white wool, the more nu...

We determined the effect of three concentrations of gibberellic acid on germination and photoblastic behavior of five species of Opuntioideae from the Mapimi Biosphere Reserve, southern Chihuahuan Desert, Durango, Mexico. For Cylindropuntia imbricata, addition of high concentrations (1,500 ppm) of gibberellic acid gave a 30% germination similar to...

Clonal structure in clonal plants can affect sexual reproduction. Individual ramets can decrease reproduction if their neighbors are ramets of the same genet due to inbreeding depression or self-incompatibility. We assessed ramet reproductive success in the partial self-incompatible Ferocactus robustus (Cactaceae) as a function of floral display si...

Describimos la distribución conocida y potencial de las especies del género Ariocarpus. Todas las especies están en alguna categoría de riesgo de extinción, listadas en la Norma Oficial Mexicana, en la Lista Roja de la Unión Internacional para la Conservación de la Naturaleza (iucn) y en la Convención sobre el Comercio Internacional de Especies Ame...

Floral biology in the Cactaceae represents a new field of research, with only 2% of approximately 2,000 species having been studied. Studies on breeding systems cover functional and morphological floral traits of sexual expression, while research on mating (hybridization) systems includes experiments on pollination, morphological and functional flo...

We compared the demography of two populations of Mammillaria huitzilopochtli, an endemic and threatened rupicolous cacti species with a narrow distribution in the semiarid Tehuacán-Cuicatlán region of central Mexico. Censuses were conducted over a 5-year period in two populations: a disturbed site (S1) and a well-preserved site (S2). Five annual si...