scholarly journals Evaluation of ecological quality in peri-urban rivers in Mexico City: a proposal for identifying and validating reference sites using benthic macroinvertebrates as indicators

Author(s):  
Angela Caro-Borrero ◽  
Javier Carmona Jiménez ◽  
Marisa Mazari Hiriart

<p>Conservation and management of aquatic ecosystems that are significantly influenced by urban activities requires the classification and establishment of potential reference sites. However, in Latin American countries, policies are not available that outlines the identification and evaluation of such sites. Therefore, this study represents a proposal for evaluating the ecological quality of peri-urban rivers in the conservation soil (CS) areas/zones of Mexico City. The proposal accounts for the zone’s physicochemical, hydromorphological, and bacteriological characteristics along with its macroinvertebrate richness. Our evaluation was performed using a canonical correspondence analysis (CCA) and indicator values (IndVal) calculated for different species. River headwaters serve/work as a good physicochemical point for potential references sites. However, the hydromorphology of the CS has been gradually modified by numerous hydraulic alterations within the peri-urban zone. Using the CCA and IndVal, two types of sites were confirmed: sites in a good state of conservation and quality and sites modified by human activity, featuring lower discharge flow, poor quality hydromorphological values and Oligochaeta class organisms. At the sites featuring a good state of conservation and quality, higher hydromorphological values were positively correlated with discharge flow and certain macroinvertebrate taxa, including Nemouridae, Podonominae, Tanypodinae, Acarina,<em> </em><em>Baetis</em>,<em> Tipula</em>,<em> Antocha</em>, <em>Atopsyche</em>, <em>Glossosoma</em>, <em>Polycentropus</em>, <em>Hesperophylax</em> and <em>Limnephilus</em><em>. </em>In the sites modified by human activity, the genus <em>Simulium</em> was classified as a disturbance-tolerant organism. The river reach within the urban zone is basically an open-air drainage ditch. Evaluations of the ecological quality of the riparian zone were used to identify the most important hydromorphological qualities and discharge flow parameters and to select the most appropriate factors that should be monitored in peri-urban rivers of the Mexico Basin. </p>

2008 ◽  
Vol 23 (1) ◽  
pp. 123 ◽  
Author(s):  
María Cristina Bayón

El deterioro y la disminución de las oportunidades de empleo para los sectores más desfavorecidos y la profundización de la inequidad en el acceso y la calidad de los servicios de salud y educación han ido acompañados de un proceso de crecimiento y agudización de la concentración espacial de la pobreza. En este artículo se exploran estos procesos y las especificidades que asumen en las localidades más pobres de dos áreas metropolitanas latinoamericanas: Florencio Varela en el Gran Buenos Aires y Chimalhuacán en la Zona Metropolitana de la Ciudad de México. Pobreza, bajos niveles educativos, precariedad laboral, desempleo y desprotección, inadecuada provisión de infraestructura y acceso a servicios, son las principales dimensiones que se analizan y se destaca el carácter acumulativo y concentrado de estas desventajas. Se hace hincapié en que la retroalimentación y el reforzamiento mutuo de dichas dimensiones contribuyen a consolidar los procesos de quiebre social y a perpetuar las situaciones de privación. AbstractThe deterioration and reduction of employment opportunities for the most disadvantaged sectors and the exacerbation of the unequal access to and quality of health and education services have been accompanied by a process of growth and the exacerbation of the spatial concentration of poverty. This article explores these processes and the specificities of the poorest localities in two Latin American metropolitan areas: Florencio Varela in Greater Buenos Aires and Chimalhuacán in the Mexico City Metropolitan Area. Poverty, poor education levels, job precariousness, unemployment and lack of protection, inadequate provision of infrastructure and access to services are the main aspects analyzed; the article also highlights the cumulative, concentrated nature of these disadvantages. Emphasis is placed on the fact that the feedback and mutual reinforcement of these dimensions helps consolidate the process of social collapse while perpetuating situations of deprivation.


Author(s):  
Gustavo Rafael Escobar Delgado ◽  
Anicia Katherine Tarazona Meza ◽  
Andy Einstein García García

The research analyzes the relationship between factors of resilience and academic performance in disabled students studying at the Technical University of Manabí. It is a correlational descriptive study conducted with a population of 88 disabled students, of which two groups were selected, one with high academic performance and the other with low performance. A questionnaire was designed and applied to determine the level of quality of life and risk factors of adolescents. Resilience was measured with the SV-RES scale created for the Latin American population.


2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 275-276
Author(s):  
Jose Aravena ◽  
Jean Gajardo ◽  
Laura Gitlin

Abstract In a scenario of increasing longevity and social inequalities, Latin-America is an important contributor to the worldwide dementia burden. Caregivers’ health is fundamental to maintain the person with dementia quality of life. However, caregiving is a culturally sensible role that requires tailored solutions. The aim is to synthesize the evidence about non-pharmacologic interventions targeted to caregivers of people with dementia in Latin-American contexts. A comprehensive review of interventions in caregivers and persons with dementia in Latin-American countries was conducted using MEDLINE, Embase, PsycINFO, and Scopus with studies published until January 27th, 2020. Randomized clinical trials of non-pharmacologic interventions targeted to caregivers of people with dementia or dyads where included. Qualitative synthesis of the evidence was presented and analyzed. Overall, 9 pilot RCT were included for the final analysis (6 Brazil, 1 Colombia, 1 Mexico, 1 Perú). The biggest study recruited 69 caregivers and the smallest 13 dyads, with follow-up range of 3-6 months. 5 control groups received at least some other non-standard care type of intervention. 8 were targeted exclusively to caregivers (4 group intervention, 3 individual, and 1 combined) and 1 multicomponent intervention. Most frequent measured outcomes were caregiver’s burden, anxiety, depressive symptoms, and quality of life, and person with dementia neuropsychiatric symptoms. Individual interventions report better results in caregiver parameters such as burden and depressive symptoms and person with dementia neuropsychiatric symptoms. Group interventions presented mixed results. Nevertheless, the quality of evidence was low. There is a critical need to study interventions for caregivers in Latin-American contexts.


Author(s):  
Marcela Tamayo-Ortiz ◽  
Martha María Téllez-Rojo ◽  
Stephen J. Rothenberg ◽  
Ivan Gutiérrez-Avila ◽  
Allan Carpenter Just ◽  
...  

Exposure to PM2.5 has been associated with the prevalence of obesity. In the Greater Mexico City Area (GMCA), both are ranked among the highest in the world. Our aim was to analyze this association in children, adolescents, and adults in the GMCA. We used data from the 2006 and 2012 Mexican National Surveys of Health and Nutrition (ENSANUT). Participants’ past-year exposure to ambient PM2.5 was assessed using land use terms and satellite-derived aerosol optical depth estimates; weight and height were measured. We used survey-adjusted logistic regression models to estimate the odds ratios (ORs) of obesity (vs. normal-overweight) for every 10 µg/m3 increase in annual PM2.5 exposure for children, adolescents, and adults. Using a meta-analysis approach, we estimated the overall odds of obesity. We analyzed data representing 19.3 million and 20.9 million GMCA individuals from ENSANUT 2006 and 2012, respectively. The overall pooled estimate between PM2.5 exposure and obesity was OR = 1.96 (95% CI: 1.21, 3.18). For adolescents, a 10 µg/m3 increase in PM2.5 was associated with an OR of 3.53 (95% CI: 1.45, 8.58) and 3.79 (95% CI: 1.40, 10.24) in 2006 and 2012, respectively. More studies such as this are recommended in Latin American cities with similar air pollution and obesity conditions.


2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Lucas Bozzetti Pigozzi ◽  
Duziene Denardini Pereira ◽  
Marcos Pascoal Pattussi ◽  
Carmen Moret-Tatay ◽  
Tatiana Quarti Irigaray ◽  
...  

Abstract Aims To compare the difference in the quality of life between temporomandibular disorders (TMD) patients and non-TMD subjects diagnosed with the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) or the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Methods Medical Literature Analysis and Retrieval System Online (MEDLINE), Excerpta Medica database (EMBASE) and Latin American and Caribbean Health Sciences Literature (LILACS) databases were searched in studies published in English and Portuguese. The search was performed by two independent reviewers in duplicate. A manual search and the gray literature were also included. The inclusion criteria were clinical studies that used the RDC/TMD axis I and quality of life with standard questionnaires in young and middle-aged adult population (18–55 years). The data were analyzed quantitatively by combining the results in a meta-analysis using forest plots. The measure of effect used was the standardized mean difference (SMD) in depression levels. The Newcastle–Ottawa Scale (NOS) was used to evaluate the quality of the studies. The publication bias was assessed by funnel plots. The initial search included 806 articles without duplications. Results Twenty-four articles were included in the final systematic review. Of these, 9 were included in the meta-analysis, where it was shown a statistically significant in all axis I groups: (a) global TMD—groups I, II and III combined, N = 3829, SMD (95% CI) = 1.06 (0.65–1.51), p = 0.000; (b) group I—muscle disorders, N = 3,056, SMD (95% CI) = 0.82 (0.45–1.18), p = 0.000; (c) group II—disc displacements, N = 3,184, SMD (95% CI) = 0.59 (0.26–0.91), p = 0.000; and (d) group III—arthralgia/arthritis/arthrosis, N = 2781, SMD (95% CI) = 0.98 (0.59–1.36), p = 0.000. When compared to controls. Conclusions Quality of life is affected in all axis I TMD patients, especially in groups I and III with higher pain intensity and disability as compared to group II.


2015 ◽  
Vol 54 ◽  
pp. 137-152 ◽  
Author(s):  
Pierre-Alexandre Rastorgueff ◽  
Denise Bellan-Santini ◽  
Carlo Nike Bianchi ◽  
Simona Bussotti ◽  
Pierre Chevaldonné ◽  
...  
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2015 ◽  
Vol 74 (Suppl 2) ◽  
pp. 996.1-996
Author(s):  
R.M. Xavier ◽  
J. Morales-Torres ◽  
D.C.R. Ramos-Remus ◽  
P. Chalem ◽  
J.F. Molina ◽  
...  

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