Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Background. Expansions in the range of invasive alien macrophytes (IEM) threaten freshwater ecosystems. However, the state of the art of invasion biology, not much attention has been given to invader-ecosystem interactions that would allow us to expand the understanding of the phenomenon and propose comprehensive management measures; predominating studies focused on control methods, invasive traits and impacts to the ecosystem. Goals. This review article centers on contextualizing the available information about Pontederia crassipes or water hyacinth in an integrated management framework. Methods. A co-occurrence analysis was performed using Vosviewer® software to identify and evaluate the different lines of knowledge on the topic. Based on landscape conservation criteria, a qualitative and narrative analysis was conducted to discuss the ecosystemic and integrated management of P. crassipes. Results. Since 1970, research on the species increased exponentially. Countries such as India, China and South Africa have stood out in their contributions to control and management. The main lines of research identified in the bibliometric analysis were five: “Bisosorption and water treatment”, “Use, compost and biofuel”, “Weed control and ecosystems”, “Phytoremediation and heavy metals” and “Artificial wetlands and nutrient removal”. These trends indicate a favorable path for the comprehensive approach to P. crassipes. However, efforts still need to be emphasized on social and political aspects, anthropic factors, basin-level and multi-scale processes. Thirteen paradigm shifts are proposed, inspired by criteria based on landscape ecology. Conclusions. The management of P. crassipes will require considering the local context, the joint species-ecosystem management and long-term adaptive schemes. This study provides a general framework for the integrated management of P. crassipes and aims to offer conceptual and practical approaches.

One of the main problems represented by climate change is the uncertainty of its impact on social structures, biotic and abiotic elements, biogeochemical and emerging processes, among others; one of the most important is the water cycle, this connection is fundamental to manage the future water supply in a integrated way in one of the most vulnerable areas in the center of the Mexican Republic, as is the case of the northwest of the State of Mexico; to identify it, a climate projection has been made to the year 2050, considering the representative concentration pathway 8. 5 (RCP) adjusted by the bias correction methodology, which shows us a possible variation in the average precipitation, since the estimated average for the dry season (115.98 mm) and rainy season (774.61) in the period 1991-2020; it would go to 48. 43 mm (dry season) and 282.70 mm (rainy season) for the period 2021-2050, as well as a temperature increase of 3.6°C for the same year, being the main contribution of this research, the behavior of surface water within the study area under these possible scenarios. However, we should mention, these results respond to a future assumption in which inaction prevails and the objectives of international instruments such as the Paris agreement and national ones such as the nationally determined contributions are not achieved.

Antecedentes: Las microalgas perifíticas se han utilizado ampliamente como bioindicadores del estrés ambiental. Objetivo: En este trabajo se contrastó la hipótesis de que las características morfofuncionales del ficoperifiton están relacionada con las condiciones físicas, químicas y bacteriológicas del agua en diferentes sistemas acuáticos del Complejo Cenagoso de Zapatosa (CCZ). Métodos: Para ello, se evaluaron algunos aspectos de la morfología funcional de estas algas (dimensión lineal máxima, área superficial, relación superficie-volumen, biovolumen) y de rasgos de formas de vida (formación de colonias, organización en filamentos, presencia de exoesqueleto de sílice, ocurrencia de aerotopos, producción de mucílago y tenencia de flagelos) y se estudió su relación con distintas variables ambientales (oxígeno disuelto, temperatura, pH, conductividad, nutrientes, iones, demandas de oxígeno, carbono orgánico, sólidos disueltos y suspendidos, coliformes fecales y totales). Resultados: Los rasgos funcionales no mostraron diferencias espaciales dentro del CCZ, ni se relacionaron de manera concluyente con las variaciones en las variables fisicoquímicas, excepto por un grado moderado de asociación positiva del biovolumen y el área superficial con las coliformes totales, y negativa del mucílago y la formación de colonias con la dureza total. Conclusiones: Las condiciones de contaminación y deterioro de los distintos sitios del CCZ fueron homogéneas y no permitieron detectar respuestas claras de los rasgos funcionales ante los cambios en la calidad del agua. No obstante, la caracterización de la morfología funcional y de los rasgos biológicos del ficoperifiton del CCZ constituye una primera aproximación a la ecología funcional de este grupo, que permitirá valorar las modificaciones que se produzcan en el futuro ante las intervenciones humanas y los cambios climáticos y ambientales.

Background. Evaporitic environments are extreme habitats due to the combined effects of several environmental factors such as temperature and salinity, despite, their host a great diversity of prokaryotes, most poorly studied but with a great biotechnological potential. The Vizcaíno region in Northwestern Mexico represents an ideal area for the exploration of saline environments that result from their geological and contemporary history, particularly, the salty ponds known as “Las Charcas” represent an ideal model due to the null anthropogenic activity. Goal. To explore the factors that determine the structure community of bacteria and archaea residing in sediments with different levels of salinity. Methods. Six different ponds were sampled during January of 2018, after it, a fragment of 16S rRNA was amplified and sequenced using NGS. Alpha and beta diversity indices were estimated, on the other hand, Webb’s NTI and NRI metrics were used to evaluate which factors determine the phylogenetic community structures in each pond, finally, to evaluate which taxa are driven by selective pressures, a neutral test model was performed. Results. Diversity levels showed a positive correlation with salinity and organic matter, however, none of the biogeochemical parameters evaluated explained significantly the differences in composition among sampled ponds. Conclusions. The microbial structure community in the sediments of the ponds analysed is shaped by both deterministic and stochastic processes, including homogeneous selection, dispersal and ecological drift.

Este estudio presenta una sistematización teórica y metodológica de los fundamentos del Sistema de gestión de las ciencias, las tecnologías y la innovación para el desarrollo sostenible.

El Grupo de Estudios Psicosociales de la Salud del Centro de Investigaciones Psicológicas y Sociológicas en Cuba ha trabajado desde el año 2006 en el perfeccionamiento del Proyecto Deporte en el Barrio: el reto de vivir mejor. 

Drawing as the architect’s traditional means of expression has become a standard of non-verbal communication in its free and technical variables, as well as representing a characteristic feature of the profession. 

“The Sustainable Development Goals (SDGs) are at the heart of the 2030 Agenda and show a comprehensive, indivisible look and renewed international collaboration. 

Los arquitectos y Diseñadores industriales pueden fomentar la promoción de un consumo y producción responsable (ODS 12, Agenda 2030) al considerar la integración de certificaciones y ecoetiquetas en sus productos y destacar que son menos dañinos para el medio ambiente. 

La Agenda 2030 para el Desarrollo Sostenible, adoptada por todos los Estados miembros de las Naciones Unidas en 2015, establece 17 Objetivos de Desarrollo Sostenible (ODS) que buscan abordar desafíos globales como la pobreza, la desigualdad, el cambio climático, la degradación ambiental, la paz y la justicia.