Solid waste management represents a challenge for municipalities, particularly at the collection stage. The high costs involved in its operation make it difficult to provide the service in all its communities, which results in bad practices (burning, burying, or dumping into a river) and the proliferation of open dumps. Collection efficiency is aggravated by poor route planning, narrow road networks, and irregular scheduling. This research proposes and develops the following objectives: (1) an analysis of the technical and logistical conditions of a town, (2) an improved municipal route for waste collection, and (3) the practical implications identified in the optimization of the service (challenges, strategies, and perspectives). During the study period (2018, 2019 and 2021), the following steps were carried out: (1) field trips to monitor the formal and informal routes, georeferencing each stop with a global positioning system, (2) semi-structured interviews to route personnel to learn about technical and logistical aspects, (3) the downloading of cartographic data for digitization, and (4) a network analysis aimed at designing an optimal route for formal collection and the spatial scope of the informal routes. The current technical and logistical analysis detected inefficiency in collection due to weak municipal operational planning and the irregular frequency of visits to the locality. The locality produces an average of 2.8 tons per day and its largest volume is organic waste (68.3%), followed by non-recyclable inorganic waste (21.2%), and recyclable waste (10.5%). In terms of results for the optimization of the municipal collection route, it is estimated that there will be an improvement in the time of the day of approximately 2 h less, going through 95 points when its schedule is 60 collection points, while the distance factor does not suffer changes due to the fact that there are no alternate routes between the departure and destination route. Among the main challenges faced by the municipalities are the limited budgets for basic sanitation services, which is why technological strategies and trained human resources are required for better municipal solid waste management. From a technical perspective, geographic information systems are a current trend to model and optimize service routes, with which a better scenario can be proposed. From a social perspective, community participation works as a key factor to carry out activities focused on finding solutions to the problems related to municipal solid waste management.

Acapulco is an influential development pole in the territorial dynamics of the State of Guerrero; therefore, the study of its urban planning is relevant from the perspective of democratic governance and related political processes at the regional level. We analyze the discourse of the citizen participation workshops of the 2015 urban planning process, where an ideal of a tourist city without environmental vision prevailed, a participation exercise carried out only to legitimize the planning process without achieving it. We showed that the auxiliary planning bodies fail to build consensus, the presence of an influential group of technicians, and the null representativeness of vulnerable groups. It is necessary that an inclusive city and the collective interest be claimed from civil society.Resumen: Acapulco es un polo de desarrollo influyente en las dinámicas territoriales del estado de Guerrero, por ende, el estudio de su planeación urbana es relevante desde la perspectiva de gobernanza democrática y de los procesos políticos relacionados con ésta en el ámbito regional. Analizamos el discurso de los talleres de participación ciudadana del proceso de planeación urbana de 2015, donde en el cual prevaleció un ideal de ciudad turística sin visión ambiental, un ejercicio de participación realizado únicamente para legitimar el proceso de planeación sin lograrlo. Mostramos que los organismos auxiliares de planeación no logran construir consensos, debido a la presencia de un grupo de técnicos influyente y a la nula representatividad de grupos vulnerables. Es necesario que una ciudad inclusiva y el interés colectivo sean reclamados desde la sociedad civil.Résumé : Acapulco est un pôle de développement influent dans la dynamique territoriale de l’état du Guerrero. Par conséquent, l’étude de sa planification urbaine est pertinente pour la perspective de la gouvernance démocratique et des processus politiques connexes régionaux. Nous analysons le discours des ateliers de participation citoyenne du processus de planification urbaine de 2015, au cours desquels a prévalu un idéal de ville touristique sans vision environnementale : il s’agit alors d’un exercice de participation réalisé uniquement pour légitimer le processus de planification, sans résultat concret. Nous avons montré que les organes auxiliaires de planification ne parviennent pas à construire un consensus, en raison de la présence d’un groupe influent de techniciens et d’une représentativité nulle des groupes vulnérables. La ville inclusive et l’intérêt collectif doivent être revendiqués par la société civile.

The studies on the evolution of tourist destinations are not a new issue, however, most of them have been focused on consolidated destinations, whereas only a minimum has been done on tourism transformation in rural areas. The objective of this work is to diagnose the evolutionary process of tourism in Coastal Rural Communities (CRCs). To do this, we propose a model which combines two research approaches, Path Dependence and Social Network Analysis. The methodological approach is divided into three parts: design, application and validation, and it is based on collecting in situ and identifying key informants. In the first part, the stages of a Path Dependence for a CRC are conceptualized and bipartite graphs are constructed to show the relationships between: (1) the identified establishments built in a period of time and (2) positive and negative lock-ins with a greater degree of influence on the evolutionary process. On this basis, the resulting graphs are associated with the stages of the Path Dependence. In the second part, the model theoretically raised is applied as an empirical case at the CRC of Playa Ventura, Guerrero, in the Southern Pacific of Mexico. Finally, we validated the model based on the results obtained, which indicate that the model is suitable for the generation of knowledge about the evolutionary process of tourism in CRC’s, and therefore, it opens the possibility of being replicated in other communities with the same characteristics.

Flooding due to climate change is recurrent and has intensified in the lower course of the Coyuca River. This paper implements a multivariate analysis, including conditioning and triggering factors to develop flood susceptibility mapping in an information-deprived region to help prevent/mitigate flooding. Flood-susceptible areas were identified using the multi-criteria decision analysis (MCDA) methodology, specifically, with the hierarchy analysis process (AHP). Four conditioning and one triggering influence factors were analyzed. The influence weights of each variable were determined using Saaty’s methodology (AHP). Thematic maps for each variable were created and multiplied by their influence value using the raster calculator and added to their variable group to obtain the flood susceptibility map. The findings showed that the susceptibility to flooding was very high in 41.82%, high in 35.95%, medium in 21.25% and low in 0.98% of the study areas. It was revealed that 44.44% of the localities occupy areas of very high susceptibility to flooding. Susceptibility increases in the localities closest to the river.

El manejo de los residuos sólidos urbanos (MRSU) en Xaltianguis es realizado por la misma comunidad, generando contaminación y deterioro ambiental. Este artículo estudia el MRSU enfocándose en la participación comunitaria. Para estimar la generación, composición y emisión se aplicó la calculadora del clima. El MRSU se obtuvo mediante una encuesta y entrevistas. Los tiraderos a cielo abierto (TCA) se georreferenciaron utilizando los sistemas de información geográfica, cuyos resultados mostraron una generación de 1017 toneladas anuales (t/a) de residuos; 62.1% fueron orgánicos y emitían 1036 t/a de CO2-eq. Existían dos sistemas de recolección, el municipal operaba semanalmente, mientras el informal a diario depositaba en un TCA y se registraron otros 22 TCA. El 48% de la población considera participar. Prácticas como el reúso (44%) y reciclaje (2.3%) aportarían a un eficiente MRSU, pero este solo puede lograrse con corresponsabilidad y compromiso de la comunidad y el municipio.

Los árboles capturan y almacenan grandes cantidades de carbono en su biomasa e impactan positivamente en la mitigación de los gases de efecto invernadero (GEI). Hasta esta fecha, no existen ecuaciones alométricas que estimen la biomasa de árboles del estado de Guerrero, México. El presente trabajo tuvo como objetivo generar ecuaciones para estimar la biomasa aérea de árboles de Pinus oocarpa Schiede y Quercus resinosa Liebmann. Se realizó un muestreo destructivo de 33 árboles para la primera especie y 19 para la segunda, distribuidos en el bosque templado de la microcuenca del río Hueyapa, Guerrero, México. La biomasa de los componentes del árbol se estimó con base en el peso seco de 6 a 14 muestras por componente arbóreo, según el tamaño del árbol. Se ajustaron modelos potenciales en su forma lineal y con transformación Box-Cox. El modelo que mejor estimó la biomasa aérea en P. oocarpa fue el potencial y para Q. resinosa fue el que se obtuvo con la transformación Box-Cox, usando logaritmo del diámetro normal ( ) y la variable combinada transformada como variable independiente. Las ecuaciones alométricas generadas rellenan el vacío existente para la estimación de la biomasa aérea de estas especies forestales en el estado de Guerrero.