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This work presents a comment on the paper "Spatio-temporal analysis of shoreline changes and future forecast using remote sensing, GIS and Kalman filter model: A case study of Rio de Janeiro, Brazil". Results obtained by Palanisamy et al. (2023) differ from other works on the coastline of Rio de Janeiro. Images from the Landsat 1–3 Multispectral Scanner (MSS) satellite and Landsat 5–9 images were inappropriately used in the detailing to delimit the shoreline variations. The lack of information about tides and waves at the time of image acquisition compromised the research results. Oceanographic - meteorological data relating to the month, day and time of the satellite's passage are fundamental in studies of this nature. These forcings are capable of temporarily modifying the morphology and position of coastline. The article proposed by Palanisamy et al. (2023) underestimated the rates of accretion and coastal erosion along the coastline of Rio de Janeiro city by neglecting the issues addressed here. • Results obtained by Palanisamy et al. (2023)on the shoreline variations in Rio de Janeiro city are questioned here. • Methodological procedures used to delimit the historical shoreline variations of Rio de Janeiro city presented inconsistencies. • Results obtained by Palanisamy et al. (2023) on the shoreline of Rio de Janeiro city are incompatibles with other work carried out in the study area. • Comments presented here aim to contribute to the evolution of knowledge about the coastal erosion process (geological hazard) on the shoreline of Rio de Janeiro - Brazil. [ABSTRACT FROM AUTHOR]

Rio de Janeiro is undergoing a makeover that is undeniably spectacular. Redevelopment schemes are dramatically rearranging the urban landscape, and crucially, this economic growth hinges on the production and circulation of images of the city. This paper explores a site of alterity and resistance where a favela youth collective has re-created Rio from its margins. This miniature world, known as Morrinho and built of bricks, mortar, and re-used materials, hosts a role-playing game featuring thousands of inch-tall avatars. This paper argues that re-visioning the world anew through play makes the society of the spectacle inhabitable and thus contestable. How does the society of the spectacle become a terrain for struggle in Rio? Locating spectacle production in nation-state formation and the urban process, the paper provides a genealogy of the spectacle beyond the modern North Atlantic metropole. Locating the favela within a Brazilian geographical imagination frames ethnographic data collected as an observer and participant in the Morrinho game. While the spectacle may hinge on the relationship between visuality and power, this essay observes how signs take on material lives through ludic re-appropriation. Play becomes a form of commentary, an alternative mode of knowledge about the city, and functions dually as both description of and participant in the social world in which it is embedded. [ABSTRACT FROM AUTHOR]

The ocean economy is becoming more than ever a key to job creation, value addition, and sustainable development of countries and regions. Given the growth of the world population and the pressure on onshore resources, the demand for marine resource exploration and maritime activities is growing, leading to different policies around the world. In the case of Brazil, a country with an extensive coastline, there are still few public policies and official definitions/data capable of fostering the ocean economy. Hence, this paper aims to map the sectors of the ocean economy of the state of Rio de Janeiro (SRJ), highlighting its potential for recovery of the local economic dynamics. To this end, the methodology considers the economic sectors that present a direct influence from the sea, encompassing 89 economic activities that were divided into 6 sectors. The treatment, cleaning, graphics, and maps created from R 4.2.2 used the following packages: tidyverse, basedosdados, paletteer, ggthemes, systemfonts, ggtext, sf, geobr. 2021 is the base year for the data, which used two main official Brazilian bases: Annual Social Information Report (RAIS) and tax data from the Internal Revenue Service, compiled by Datalake Neoway. Among the main results, we highlight the relevance of the service sector, particularly those related to the oil and gas industry (P&G) and tourism. • The ocean economy should be taken as a vector of sustainable development in Brazil. • Promoting the ocean economy requires a reformulation of public policies. • There are many industries and stakeholders involved in SRJ's ocean economy. • Like other countries, the service sector stands out in SRJ's ocean economy. • Despite its informality, tourism generates more jobs in SRJ's ocean economy. [ABSTRACT FROM AUTHOR]

Abstract: The Brazilian Movimento dos Trabalhadores Rurais Sem-Terra (MST) is one of the best-known and most prominent rural social movements. The unequal distribution of land in Brazil, and the neglect of this problem by successive Brazilian governments contributed greatly to the organisation of rural movements striving for the implementation of land reform in the country. The struggle for land therefore frames the MST collective action and legitimates its raison d’être as a social movement. The MST framing process, carried out mainly by the movement leaders and organisers, intends to unify the social movement by articulating private beliefs, interpretations and preferences into shared values and meanings. However, this process of framing does not take place without competition or/and conflict: leaders are many times forced to compete with other institutions, with the media, or even with inherited cultural understandings which provide alternative frames. This paper focuses particularly on the conflicting process of framing internal to the MST. More specifically, the present paper looks at how the MST leaders/organisers frame, and interpret, community and land differently from the MST settlers/followers whose lived experiences and inherited cultural understandings naturally informed their perceptions both on community and land. [Copyright &y& Elsevier]

• Spatial extent alters the assement of environmental justice. • In metropolitan areas and municipalities the most vulnerable to hazards are minority groups. • At the borough scale there are well-to-do white people exposed to hazards (especially flooding) • Elite self-exposure to risk is supported by spatially unjust distribution of infrastructures. Although environmental justice scholars have been addressing spatial scale for at least thirty years, one of its components remains largely overlooked, namely extent. In this paper, we investigate the effects of extent variation in environmental (in)justice patterns by analyzing the statistical associations between socio-economic marginality and environmental vulnerability at three different spatial scopes: metropolitan areas, municipalities, and boroughs. Using census and geospatial data, our case study focuses on the relations between income and color/race, on the one hand, and susceptibility to flooding and landslides, on the other, in Brazil's two largest cities (São Paulo and Rio de Janeiro). We constructe an integrated, census tract-level database using areal weighting interpolation combining census with susceptibility data to perform k-means multivariate clustering analysis. Although our results show that the most vulnerable to landslides and flooding are non-white, low-income people – confirming common environmental justice claims – they also suggest that spatial extent impinges on statistical patterns. While the clusters are very similar in the metropolitan and municipal scales, pointing to a fractal-like structure, they differ significantly at the borough scale. This smaller scale reveals a different picture, one in which well-to-do white people are just as exposed to hazards (especially flooding) as non-white, middle- to lower-middle-class people. We argue this is a result of elite self-exposure to risk, which is supported by socio-spatially unjust distribution of risk-mitigation infrastructures. Policymakers should pay attention to such scale-dependent complexities in devising ways to cope with the increasing inequities brought about by climate change. [ABSTRACT FROM AUTHOR]

Abstract: The Municipality of Campos dos Goytacazes is located on the northern coast of Rio de Janeiro, Brazil. The city developed on a floodplain and as a consequence of this occupation it has experienced problems with the water table level, drainage system, soil carrying capacity and aquifers'' contamination. The purpose of this paper was to accomplish a geological and environmental study, producing interpretive and derived geotechnical maps to analyze the degree of aptitudes or restrictions of the physical environment for urban expansion. In order to do this, the methodology of multicriterial analysis was used, combined with pedological indicators resulting in the elaboration of the Favorability Maps for Buildings (Shallow and Deep Foundations). The remote sensing tools, GIS and GPS, sped up the elaboration of the Information Plans. The maps generated in this work allow us to indicate problems in the physical environment serving as a guide to urbanization. It was verified that the city expands into unsuitable areas and it is recommended as areas for expansion those considered favorable in the outcomes of this research. [Copyright &y& Elsevier]

While much research now demonstrates how social inequalities can drive HIV transmission, relatively little attention is given to the spatialized 'intersections' of race, class, and gender. Using this approach, this article considers an understudied phenomenon in Brazilian HIV discussions, the importance of the drug economy in shaping intimacy in favelas. Drawing on interviews with young women in Rio de Janeiro, it documents the intimate relations between young women and male drug workers to situate HIV vulnerability at the juncture of three social-spatial changes: (1) the rise of a drug economy that provides some racialized men, marginalized from mainstream society, with opportunities for work; (2) the precarious economic position of racialized women; and (3) the gendered dynamics including violence that can shape intimate relations. The paper shows how these relationships are contested by women who can cast their partners as living a 'wrong life.' [ABSTRACT FROM AUTHOR]

Abstract: This paper assesses the effects of non-aqueous fluids (NAFs-type III) cuttings discharge from exploratory drilling activities on deep-sea macrobenthic communities in the Campos Basin, off the southeastern Brazilian coast, Rio de Janeiro State. One hundred and fifty nine sediment samples were taken with a 0.25m2 box corer at a depth of 902m on three monitoring cruises: first cruise—before drilling (April 2001), second cruise—after drilling (July 2001), and third cruise—one year after drilling (July 2002). The results indicated no significant changes in values of density, number of families and functional groups related to drilling activities in the reference area (2500m distance), and biological variations may be result from the natural variability of the fauna. Evidence indicates that drilling activities led to measurable effects on the community structure related to NAF cuttings discharge but were limited to a 500m radius from the drilling well. Such effects were much more evident at isolated sites in the impact area (WBF and WBF+NAF areas) and are characterized as localized impacts. One year after drilling, a recolonization was observed, with the probable recovery of the macrobenthic community in most of the study area; only at part of the WBF+NAF area (stations 05, 24 and 36) was the community still undergoing recovery. [Copyright &y& Elsevier]

Little evidence is available about the utility of web-based health education for students in low resource settings. This paper reports results from an evaluation of the TeenWeb project, a multi-year, web-based health education intervention implemented in two urban settings: Nairobi, Kenya (N =1178 school students) and Rio de Janeiro, Brazil (N =714 school students). A quasi-experimental, school-based pre-test/post-test design was implemented at each study site to determine if easy access to web-based reproductive health information, combined with intellectual “priming” about reproductive health topics, would result in improved knowledge and attitudes about topics such as condom use, access to HIV testing, emergency contraception and abortion laws. Students in web-access schools completed one web-based module approximately every 6–8 weeks, and in return, had access to the Internet for at least 30min after completing each module. Although students were encouraged to access project-supplied web-based health information, freedom of web navigation was an incentive, so they could choose to access other Internet content instead. Most measures showed statistically significant differences between students in “web” and “comparison” conditions at post-test, but only about half of the differences were in the hypothesized direction. Results of an embedded experiment employing more directed feedback tripled the likelihood of correctly reporting the duration of emergency contraception effectiveness. Review of URL logs suggests that the modest results were due to inadequate exposure to educational materials. Future intervention should focus on teen's purposeful searching for health information when they are in personal circumstances of unmet health needs. [Copyright &y& Elsevier]

In this paper, we propose an approach to investigate the hypothesis that the residential concentration of poverty affects health status more deeply than when poverty is randomly scattered in a given geographical area. To characterize the geographic pattern of poverty in the city of Rio de Janeiro, Brazil, an index that measures the heterogeneity of poverty concentration among sub-areas was proposed. We used census data and defined poverty by means of the household head monthly income. The 153 neighborhoods that compose the city were used as the geographic units, and the census tracts as the sub-areas. The proposed index measures differences of poverty concentration across census tracts within a neighborhood. The effects of geographic poverty clustering on infant mortality related variables (early neonatal mortality rate; post-neonatal mortality rate; proportion of adolescent mothers; and fertility rate among adolescents) were estimated by partial correlation coefficients, controlling for the neighborhood poverty rate. Our study revealed that intra-city variations of the post-neonatal mortality rate are associated with geographic patterns of poverty, and that pregnancy in adolescence is strongly and contextually correlated with intra-neighborhood poverty clustering, even after adjustment for the poverty rate. The evidence of relevant health differences associated with the spatial concentration of poverty supports the hypothesis that properties of the environment of residence contextually influence health. Our findings suggest that prevention of some infant mortality related problems has to be focused directly on features of communities, considering their physical, cultural and psychosocial characteristics, being of particular concern the health of communities segregated from the society at large by extreme poverty. [Copyright &y& Elsevier]