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Copyright of Arqueología Iberoamericana is the property of Arqueologia Iberoamericana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Economía, Sociedad y Territorio is the property of El Colegio Mexiquense and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Brazilian Journalism Research is the property of Sur le journalisme, About journalism, Sobre jornalismo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper aims to describe the situations of vulnerability to the possibility of becoming human trafficking victims for both mobile and resident populations in the municipality of Tapachula, Chiapas during October 2018 and July 2019, period in which the first caravans arrived in the border between Tapachula, Mexico and Tecun Uman, Guatemala. This paper is the result of a qualitative research approach that examines the category of vulnerability and the legal framework for human trafficking in Mexico, and it is based on field observation records in institutions dedicated to the protection of migrants and victims of gender-based violence, as well as in interviews with key informants in Chiapas and Mexico City. The main conclusion of this work is that the juncture resulting from the response of the Mexican government to the caravans, the austerity policy enforced by the Mexican government, and the problems derived from an institutional design that operates without adherence to the legal framework and with overwhelmed capacity, led to situations of unprecedented or exacerbated vulnerability for these populations. [ABSTRACT FROM AUTHOR]

Copyright of La Granja, de Ciencias de la Vida is the property of Universidad Politecnica Salesiana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Estudios de Cultura Maya is the property of Instituto de Investigaciones Filologicas - UNAM and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Natural phenomena affect differently in the world. It comes first from the geographical location, followed by the economic characteristics of each region. The objective of the case study presented is to design a supply network of essential products to victims in the state of Chiapas, located within the Mexican Republic, which is one of the states most affected by the appearance of natural phenomena. The vehicular routing problem with capacity is applied as a solution for the supply of aid products to 120 of 124 municipalities impacted by natural phenomena of a hydrometeorological type during the period 2015-2022. Evaluating the different municipalities that are home to the state under study through various Infrastructure and service factors, the municipality of Tuxtla Gutiérrez is determined as the origin of the routing, obtaining with it a total of 44 routes with an average of 2.7 municipalities to be supplied per route and an average of 402 km travelled. A second municipality is located, Tapachula, which obtains a second place in evaluating factors, providing the longest route in the distance travelled. [ABSTRACT FROM AUTHOR]

The snake Mastigodryas dorsalis (Bocourt, 1890) is generally considered absent from Mexico, but a few sources indicate otherwise. Herein we resolve this issue by re-examining a historical specimen and by reporting new records for M. dorsalis in Chiapas, Mexico. These records extend the known distribution of the species 87 km northwest of the nearest pre-existing record in Guatemala. Additionally, based on these new records and an exhaustive literature review, we present an updated distribution for the species and revise its known elevational range to 300–2110 m. A complete Spanish translation of this paper is available in the Supplemental Data. Una traducción completa al español de este artículo está disponible en los Datos Suplementarios.

Los estudios sobre la élite maya del Clásico Tardío (600-900 d. C.) mencionan la existencia de objetos que simbolizaban el poder social y legitimaban a su portador; los cuales se ostentaban en diversos eventos, como se observa en algunos monumentos pétreos y en las escenas palaciegas de las vasijas pintadas fechadas durante ese periodo. Uno de tales objetos, que suele ser frecuente en dichas representaciones, es un artefacto semejante a un cetro. En este artículo se discute la presencia de los cetros en los monumentos inscritos de Yaxchilán, Chiapas; lo cual sirve como marco interpretativo referencial para postular el posible uso de un artefacto elaborado a partir de una extremidad ósea de felino procedente la Tumba II de Yaxchilán, explorada en 1980 bajo la dirección de Roberto García Moll. ENGLISH: Studies on the Late Classic Maya elite (AD 600–900) mention the existence of objects that symbolized social power and legitimized their bearer; which were displayed in various events, as observed in some stone monuments and palace scenes on painted vessels dated during this period. One of these objects, which is frequent in such representations, is an artifact similar to a scepter. This paper discusses the presence of scepters in the inscribed monuments of Yaxchilan, Chiapas; which serves as a referential interpretative framework to postulate the possible use of an artifact made with a feline bone limb from Tomb II of Yaxchilan, explored in 1980 under the direction of Roberto Garcia Moll.

Two new species of sequestrate fungi are described from south Mexico based on morphological and molecular evidences. Here we describe Elaphomyces castilloi characterized by the yellowish mycelial mat, dull blue gleba and ascospores of 9.7-11.5 µm; Entoloma secotioides is characterized by the secotioid basidiomata, sulcate, pale cream pileus, and basidiospores of 7-13 × 5-9 µm. Both species grow in montane cloud forest under Quercus sp. in the state of Chiapas, Mexico. Descriptions, photographs, and multilocus phylogeny for both species are presented. [ABSTRACT FROM AUTHOR]

The meaning of "youth" is changing among young Tzeltal migrants from Chiapas, Mexico, living in the U.S. state of California. Migration improves young people's condition in terms of work, leisure time, and cultural consumption. A study based on ethnographic data, interviews, questionnaires, and participant observation undertaken in 2011, 2013, and 2016 shows how the material resources to which these migrants have access are directed toward building a unique youth style based on aesthetics and language that can be called the "Tzeltal jungle cowboy." El significado del concepto "juventud" está cambiando entre los jóvenes migrantes tzeltales de Chiapas, México, que viven en el estado de California en Estados Unidos. La migración mejora las condiciones de vida de los jóvenes debido a su acceso al trabajo, tiempo libre y consumo cultural. Un estudio hecho en base a datos etnográficos, entrevistas, cuestionarios y observación participante realizado en 2011, 2013 y 2016 nos muestra cómo los recursos materiales a los que tienen acceso estos migrantes se dirigen a construir un estilo juvenil único basado en la estética y el lenguaje que podría denominarse el "vaquero tzeltal de la selva". [ABSTRACT FROM AUTHOR]

The trematodes of Allocreadiidae are mainly parasites of freshwater fish and the family contains 18 valid genera. Since 2004, 4 genera have been described in the Americas: Paracreptotrema, Paracreptotrematoides, Pseudoparacreptotrema and Auriculostoma, of which the latter was recently synonymized with Creptotrema by Franceschini et al., (2021). During a study in 2018 on fish parasites of Lacantún River, Chiapas, Mexico, allocreadiids were collected from the intestine of Atherinella alvarezi and morphological differences with other genera of the family were immediately noted. These differences were corroborated with molecular data and phylogenetic analyses, which indicated that it was a new genus and species. The objective of this study is to describe the new taxon, which we name Mesoamericatrema magnisacculus n. gen., n. sp. as well as to clarify its phylogenetic relationships, host specificity, and geographical distribution. For this, we carried out a meticulous study of the morphology and compared the new taxon with its congeners. We also obtained sequences of the 28S and ITS from the ribosomal RNA region that were used in generating molecular phylogenies and in calculating genetic distances with sequences of other species of Allocreadiidae available in the Genbank. The new genus is mainly characterized by having a very large cirrus sac in relation to the length of its body and nests in a clade that groups Creptotrema, Creptotrematina, Paracreptotrema, Paracreptotrematoides, Pseudoparacreptotrema and Wallinia, all of which have a Neotropical affinity in terms of their geographic and host distribution. Mesoamericatrema n. gen. is the fifth genus of Allocreadiidae to be described in the Americas since 2004, the third discovered in Mexico since 2016, and the first to be described as parasitizing Atheriniformes, which indicates that Middle America is a region where important speciation events have occurred in freshwater fish parasites. [ABSTRACT FROM AUTHOR]

Results of an aquatic beetle survey at Volcán Tacaná, Mexico, are presented with five altitudinal levels in a monthly sampling regime, aiming to estimate both diversity and altitudinal distribution patterns of the aquatic beetle fauna. The first list of aquatic beetle species from this mountain is presented, comprising 40 species in 32 genera and nine families, with four species recorded for the first time from Mexico and six recorded for the first time from Chiapas. The aquatic beetle fauna is characterized by Elmidae with 20 species, Dytiscidae with eleven species, Dryopidae with three, and Epimetopidae, Hydraenidae, Hydrophilidae, Gyrinidae, Lutrochidae, and Noteridae with one species each. The species composition through the sampled altitudinal gradient (670-1,776 m) was not homogeneous, with the elmid genera Macrelmis, Heterelmis, Microcylloepus, and Austrolimnius present at all levels, while Hexanchorus, Neoelmis, and Onychelmis were present at levels 1-3 (673-1,214 m); dytiscids were mostly present at levels 4 and 5 (1,619-1,776 m), and dryopids were present only at levels 1-3. A Parsimony Analysis of Endemicity supports a general partition between altitudinal levels 1-3 and levels 4 + 5. [ABSTRACT FROM AUTHOR]

RESUMO – O jornalismo empreendedor, que se multiplicou em diferentes partes do mundo, apresenta suas próprias nuances em cada país. Neste trabalho analisamos oito projetos jornalísticos de dois estados do México, Chiapas e Jalisco; o primeiro, o mais pobre do país e de menor acesso à internet, e o segundo, dos mais desenvolvidos no plano econômico, com mais teledensidade e maior contribuição ao PIB nacional. Os resultados obtidos em ambas as entidades são projetos jornalísticos empreendedores ainda não consolidados que exploram diferentes formas de receitas, como convenções publicitárias institucionais, em primeiro lugar, e de forma mais marginal, publicidade comercial, monetização digital, e apoio solidário de leitores e de fundações. Em Chiapas, os projetos se caracterizam por serem iniciativas unipessoais, enquanto em Jalisco surgem dentro do novo cooperativismo que experimenta o jornalismo digital. ABSTRACT – Entrepreneurial journalism, which has multiplied in different parts of the world, has its own nuances in each country. In this paper we analyze eight journalistic projects in two states of Mexico, Chiapas and Jalisco; the first, the poorest in the country and with less access to the internet, and the second, of the most developed in the economic plane, with more teledensity and greater contribution to the national GDP. The results show, in both entities, enterprising journalistic projects not yet consolidated that explore different forms of revenue, such as institutional advertising agreements, first, and more marginally, commercial advertising, digital monetization, and solidarity support from readers and foundations. In Chiapas, the projects are characterized by being unipersonal initiatives, while in Jalisco they arise within the new cooperativism that digital journalism experiences. RESUMEN – El periodismo emprendedor, que se ha multiplicado en diferentes partes del mundo, presenta sus propios matices en cada país. En este trabajo analizamos ocho proyectos periodísticos de dos estados de México, Chiapas y Jalisco; el primero, el más pobre del país y de menor acceso a internet, y el segundo, de los más desarrollados en el plano económico, con más teledensidad y mayor aportación al PIB nacional. Los resultados arrojan, en ambas entidades, proyectos periodísticos emprendedores aún no consolidados que exploran diferentes formas de ingresos, como convenios publicitarios institucionales, en primer lugar, y de manera más marginal, publicidad comercial, monetización digital, y apoyo solidario de lectores y de fundaciones. En Chiapas, los proyectos se caracterizan por ser iniciativas unipersonales, mientras que en Jalisco surgen dentro del nuevo cooperativismo que experimenta el periodismo digital.

Background: Forestry management modifies the diversity, structure, and functioning of intervened forests. Timber extraction reduces tree density and basal area, leading to changes in the communities of vascular epiphytes. The objective of this study was to evaluate the diversity and biomass of vascular epiphytes in Quercus trees remaining in two pine-oak forest stands that have been subjected to two stages of the Silvicultural Development Method (release cutting, and thinning) in comparison with an unharvested old-secondary forest in southern Mexico. For each treatment, richness of epiphytes present on 60 oak trees was recorded and their dry biomass estimated. We calculated the true diversity (Hill numbers) and beta diversity using the Jaccard coefficient of similarity, and generated rank abundance curves per taxonomic epiphyte group (bromeliads, orchids, ferns and others). For each treatment, the relationships between overall diversity and epiphyte biomass to the host trees basal area were analyzed using log linear models. Results: We recorded a total of 67 species of epiphytes species belonging to 10 families hosted by five species of oaks. The greatest species richness (0 D) was recorded in the old-secondary forest. Fewer common (¹ D) and dominant (² D) species were recorded in the release cutting than in the other treatments. Epiphyte diversity and biomass were both slightly related to host tree basal area. Composition of epiphytes was similar (60%) among treatments, although orchids, bromeliads, and other families were more diverse in the old-secondary forest. Most bromeliad species were shared across all treatments, although orchids presented the most exclusive species in the unharvested forest. The bromeliad Tillandsia seleriana provided the greatest contribution to biomass in all treatments, followed by the orchid Camaridium densum. Generalized linear models indicated that epiphyte diversity was significantly related to treatment, and epiphyte biomass to basal area of host trees. Conclusions: Although forest management affects diversity, composition, and abundance of vascular epiphytes, most of their diversity and biomass can be maintained despite timber harvesting. This requires sparing some mature oaks during logging, as they contribute to conservation, establishment, and development of epiphytic communities, and maintaining untreated areas as a source of propagules for these communities. [ABSTRACT FROM AUTHOR]

Copyright of Estudios de Cultura Maya is the property of Instituto de Investigaciones Filologicas - UNAM and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Biofertilizers are considered as potential supplements or alternatives to fertilizers. The objective of the present study is to evaluate different biofertilizers in combination with synthetic fertilizers on the yields of maize and wheat in several states in Mexico. Fourteen biofertilizer treatments plus a treatment with 100% the locally recommended fertilizer rate (RFR), another with 50% RFR (the control treatment), and one without any fertilizer (for a total of 17 treatments) were tested on maize and wheat in five states across Mexico. Field experiments were established in five states and several years for a total of 14 experiments in Mexico. In general, except for the experiments conducted in moderately low soil P conditions, Chiapas and Sonora (maize), no response to biofertilizers was observed in the remaining locations, through the years in wheat and maize. We conclude that in high input production systems, the biofertilizer response is more an exception than a rule with only 21% of the experiments showing a significant difference in favor of biofertilizers and only 4 of 15 products tested produced a yield response in more nitrogen deficient environments. Some products containing AMF may be beneficial in maize production systems with phosphorus deficient environments. [ABSTRACT FROM AUTHOR]