Leonardo Capeleto de Andrade

The expansion of the Great Atlantic Sargassum Belt (GASB) has increased the frequency and intensity of Sargassum stranding events across the Tropical Atlantic, generating ecological, social and economic impacts on coastal systems. Along the Brazilian coast, however, formal scientific documentation of these events remains limited, despite growing public evidence of strandings, particularly in northern states. Here, we conducted a comparative analysis of Sargassum stranding records in Brazil from 2010 to 2025 using an exploratory mixed‐methods approach that integrated scientific literature and digital media reports. We compiled 51 records and found a marked asymmetry in documentation, with most records originating from media sources and far fewer from scientific publications. Temporal patterns were episodic and irregular, with no significant long‐term trend, although seasonal timing differed between sources. Spatially, Pará emerged as the main national hotspot, with Maranhão also standing out in the scientific literature. Qualitative comparisons showed that all scientific records confirmed pelagic species ( Sargassum natans and S. fluitans ), whereas many media reports misclassified benthic macroalgae as pelagic Sargassum . Quantitative biomass estimates were scarce and restricted to scientific studies, whereas media coverage emphasized immediate socio‐economic impacts, especially on tourism and coastal use. Our findings reveal a mismatch between rapid public reporting and slower scientific documentation, highlighting a critical gap in Brazil's capacity to monitor and respond to an emerging coastal conservation issue. We argue that integrating scientific and media‐based evidence can strengthen early detection, improve taxonomic standardization and support more proactive management strategies for stranded pelagic Sargassum along the Brazilian coast.

Sargassum seaweed beaching events in the Northern Brazilian coast pose environ-mental and economic challenges. Understanding these occurrences is essential for preparing effective management strategies. This study systematically reviews scien-tific articles — screening 2,821 records and assessing 17 full texts — to identify gaps in research and practice, focusing on the impacts, management, and potential uses of pelagic Sargassum biomass. The review identified significant gaps in existing infra-structure and public policy to manage future seaweed influxes effectively. Although innovative approaches—such as the use of Sargassum biomass in sustainable con-struction materials — have been reported as potential strategies, their implementa-tion remains incipient. However, further development of local processing facilities and regulatory frameworks is crucial to reduce logistical challenges, support local economies, and minimize environmental impacts. This study underscores the urgent need for integrated strategies combining infrastructure investments, technological innovation, and policy reforms to address the socio-environmental challenges posed by Sargassum and harness its potential as a valuable resource.

A implementação de uma política de gestão adequada de resíduos sólidos apresenta desafios significativos, especialmente em comunidades rurais do interior da Amazônia, que carecem de serviços básicos de saneamento, como a coleta de resíduos. Este estudo objetiva avaliar os destinos dos resíduos sólidos produzidos por comunidades ribeirinhas na região rural do estado do Amazonas, Brasil. Para isso, foram analisadas uma amostra de 120 localidades e 775 unidades domésticas, oriundas de um levantamento censitário realizado pelo Sistema de Monitoramento Demográfico e Econômico (SIMDE) do Instituto de Desenvolvimento Sustentável Mamirauá, na Reserva de Desenvolvimento Sustentável Amanã, em 2018. Os resultados mostram que os principais métodos de disposição dos resíduos são a queima, empregada para 70% dos resíduos inflamáveis, e o enterro, utilizado para 63% dos outros resíduos. Devido à falta de opções adequadas de destinação, as comunidades ribeirinhas desenvolvem suas próprias formas de disposição final dos resíduos domiciliares. Esses achados sublinham a necessidade urgente de promover práticas de manejo de resíduos sólidos mais adequadas e sustentáveis em comunidades rurais da Amazônia.

The report is interesting. As a recommendation, a definition and images of "nests" (as in "Dense nests were built") would help to understand the technique. A greater discussion of "Agroecological practices" and contamination risks, as well as more c...

O Teçume D’Amazônia é um grupo que produz artesanatos, de forma sustentável, a partir das fibras beneficiadas do cauaçu, gerando renda e empoderamento para um grupo de mulheres ribeirinhas da Reserva de Desenvolvimento Sustentável Amanã, no estado do Amazonas. O objetivo deste estudo foiavaliar o enquadramento do Teçume D’Amazônia como uma tecnologia social, especificamente como organização e artefato. O método Delphi foi combinado ao método da pesquisa-ação, a partir da autorrefl exão e autocrítica dos avaliadores. O enquadramento como tecnologia social se diferenciou quando avaliado como Organização e como Artefato. Como organização, o Teçume D’Amazônia pode ser considerado uma tecnologia social, com características como reaplicabilidade, solução de problema social, interação e apropriação pelas e para as suas usuárias. Já os artefatos podem ter usos diversos, dificultando seu enquadramento e podendo ser considerado um produto de uma tecnologia social

This work sought to analyze the health and environment in the Brazilian municipalities that make up the Frontier Strip (FS), considering the unique challenges of managing these in such territory. For this purpose, the association between them was studied by collecting and analyzing secondary data, using descriptive statistics, mapping, and cluster analysis. The main results demonstrated the lack of public policies, particularly for environmental and health issues in activities of municipal border governments, and the discussions that incorporate intersectionality in planning are even more limited. Of the 94.7% of municipalities analyzed, 53.6% presented an average performance on the environmental issue, and 81.3% a low or very low one on health, probably due to the fact that environmental aspects have gained more attention in the context of Brazilian FS compared to health ones. Finally, the study points out the implications of these results, which can subsidize public policies.

This work sought to analyze the health and environment in the Brazilian municipalities that make up the Frontier Strip (FS), considering the unique challenges of managing these in such territory. For this purpose, the association between them was studied by collecting and analyzing secondary data, using descriptive statistics, mapping, and cluster analysis. The main results demonstrated the lack of public policies, particularly for environmental and health issues in activities of municipal border governments, and the discussions that incorporate intersectionality in planning are even more limited. Of the 94.7% of municipalities analyzed, 53.6% presented an average performance on the environmental issue, and 81.3% a low or very low one on health, probably due to the fact that environmental aspects have gained more attention in the context of Brazilian FS compared to health ones. Finally, the study points out the implications of these results, which can subsidize public policies.

The 2030 Agenda was set in 2015 by the United Nations, with 17 Sustainable Development Goals. The Amazonian riverine people are recognized as traditional communities that have their own culture and use the local natural resources of their territories in an ancestral and traditional way. The Sustainable Development Reserve is a Brazilian protected area category which aims to ensure the protection of the natural environment while allowing the residence and the use of these lands by traditional populations. This article reports and discusses the achievements and challenges of the Sustainable Development Goals in two sustainable development reserves in Central Amazonia. The goals were evaluated in the Mamirauá and Amanã Sustainable Development Reserves, due to the large research programs developed in those areas along the past 20 years. The 17 Sustainable Development Goals have a clear connection with the mission of these sustainable development reserves in Central Amazon. Despite the many achievements conquered over the years, there are many challenges yet to overcome; and while striving to achieve the goals from the 2030 Agenda, new challenges will emerge. The current main challenges to reach the Sustainable Development Goals in the Mamirauá and Amanã Sustainable Development Reserves, in Central Amazon, are connecting to the reality of rural areas.

Urban rivers are intensely impacted by pollution with metals resulting from anthropogenic activities, and these elements present in water and sediments can be ecofriendly phytoremediated. This study aimed to evaluate the levels of metals in the sediments and colonizing plants growing in point bars in the channeled bed of the Dilúvio Stream, Southern Brazil. Sediment and plants were sampled at five-point bars with consolidated vegetation. These point bars are formed mainly by sand, with increasing concentrations of clay plus silt, carbon, nitrogen, and metals (Zn, Cu, Cr, Ni, Pb, and Cd) downstream. The concentration of Zn (338 μg/g) and Cu (219 μg/g) in sediments were 1.6 and 1.11 above the probable effect level at the most downstream site. The translocation factor was low in all sites and for all potentially toxic metals evaluated (ranging from 0.01 to 0.63). However, bioaccumulation factor exhibited high values, especially for Cd (average of 2.51), Ni (1.62), Zn (1.49), and Cr (1.25), suggesting that the colonizing plants have more potential for phytostabilization and phytoaccumulation than phytoextraction. These plants can be considered as natural filtering reducing the environmental contamination and the flow of these contaminants in the drainage network. Statement of novelty: Colonizing plants growing in point bars of urban rivers are common around the world; however, their phytoremediation potential is poorly studied. Colonizing plants may be useful for phytoremediation of water, effluents, and sediments of the Dilúvio Stream (Southern Brazil), polluted by potentially toxic metals that originated from the urbanization.