Mercury-based gold exploitation in Amazonian indigenous lands is illegal and leads to socio-environmental impacts. Yanomami people living near mining areas in Uraricoera River are exposed to contamination by mercury, which is a metal with bioaccumulation properties. The aims of the current study are to analyze the interdisciplinary nature of mercury-based placer mining carried out in Yanomami Indigenous Land, Roraima State, as well as to evaluate State agencies’ responses to this phenomenon. Based on bibliographical and documentary survey of qualitative approach, which involved Yanomami’s accounts, as well as police, administrative and judicial procedures implemented from 2013 to 2017, it was possible perceiving intense use of mercury in, and damages caused by, this illicit activity, as well as insufficient state action. There are divergences between protection and responsibilities described in the Brazilian legal system and the herein investigated illegal phenomenon, which violates indigenous rights, as well as scientific and ethical imperatives that can lead to the end of the world and of the Yanomami people.
Esse é o primeiro estudo sobre a ocorrência de fungos filamentosos cultiváveis em associação com o trato digestório (TD) de larvas de Phylloicus (Trichoptera: Calamoceratidae). Larvas de Phylloicus (n=137) foram coletadas em igarapés de baixa ordem da Amazônia brasileira (estados de Roraima, Pará e Tocantins) e dissecadas para se obter o conteúdo do TD. Fungos filamentosos foram cultivados a partir de cada TD. Eles apresentaram diferentes morfologias (média geométrica ± desvio padrão de morfoespécies por TD = 6,2 ± 6,4), bem como variação significativa no tamanho das populações (unidades formadoras de colônias por TD = 8,5 ± 47,0 x 101), tanto entre paisagens ecológicas como entre larvas de uma mesma localidade. O fato de larvas de Phylloicus comumente abrigarem fungos filamentosos em seu TD (94,9%), como verificado neste estudo, indica que, potencialmente, esses microrganismos exercem papéis importantes na interface de interação com seus hospedeiros, que podem estar relacionados com a degradação de substratos lignocelulósicos. A partir dessa perspectiva, o TD de Phylloicus sp. poderia representar uma fonte de fungos com potencial biotecnológico.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.