Assessment of trace metal contamination and bioavailability in an Environmental Protection Area: Guaxindiba estuarine system (Guanabara Bay, Rio de Janeiro Brazil)

2020 ◽  
Vol 35 ◽  
pp. 101143
Author(s):  
Michele Fernandes ◽  
Estefan Monteiro da Fonseca ◽  
Leonardo da Silva Lima ◽  
Susanna Eleonora Sichel ◽  
Jessica de Freitas Delgado ◽  
...  
2007 ◽  
Vol 18 (6) ◽  
pp. 1194-1206 ◽  
Author(s):  
Cassia O. Farias ◽  
Claudia Hamacher ◽  
Angela de Luca R. Wagener ◽  
Reinaldo C. de Campos ◽  
José M. Godoy

2017 ◽  
Vol 27 (50) ◽  
pp. 534 ◽  
Author(s):  
Fernanda Lerner ◽  
Carlos Andre Luz Jeronymo

<p>A Área de Proteção Ambiental (APA) de Massambaba foi criada com objetivo de conservar fragmentos do ecossistema de restinga, da Região dos Lagos, Rio de Janeiro, Brasil. No entanto, em sua porção no município de Arraial do Cabo, têm se observado ocupações em zonas onde essas atividades são vedadas. O caráter irregular e as sanções sofridas pelos atores locais vêm causando diversos conflitos, principalmente, por ter sido concedida uma licença prévia para um projeto de Eco Resort na mesma localidade. Indaga-se como duas atividades semelhantes de uso dos recursos  são tratadas de forma diferenciada pelo poder público. Neste trabalho buscou-se investigar os conflitos de uso e cobertura da terra da APA de Massambaba, em Arraial do Cabo, e especificamente procurou-se alterações nos regulamentos legais relacionados à unidade, para favorecer atores e interesses específicos. Os procedimentos metodológicos envolveram a revisão bibliográfica, pesquisa documental e elaboração de mapeamentos. Conclui-se que houve alterações no Plano de Manejo da APA e seu Zoneamento Ambiental, e essas alterações fragilizaram a gestão da unidade, privilegiaram atores específicos e seus interesses particulares.</p><p><strong>Palavras–chave:</strong> Área de Proteção Ambiental; Massambaba; restinga; conflito; uso e cobertura da terra.</p><p><strong>Abstract </strong></p><p>The Environmental Protection Area (EPA) Massambaba was created in order to conserve ecosystem fragments of restinga, of the Lakes Region, Rio de Janeiro, Brazil. However, in its portion in the city of Arraial do Cabo, have been observed occupations in areas where such activities are prohibited. The irregular character and sanctions suffered by local stakeholders have caused many conflicts, especially for having been granted a preliminary license for an Eco Resort project in the same location. It asks as two similar direct use activities of natural resources are treated differently by the government. This work aimed to investigate the conflicts of land use and land cover of Massambaba APA in Arraial do Cabo, and specifically sought changes in the unit related to legal regulations to favor actors and interests. The methodological procedures involved the literature review, document research and development mappings. It was concluded that there were changes in the APA Management Plan and its Environmental Zoning, and these changes weakened the management of the unity, favored specific actors and their interests.</p><p><strong>Keywords</strong>: Environmental Protection Area; Massambaba; restinga; conflict; land use and land cover.</p>


2011 ◽  
Vol 4 (1) ◽  
pp. 07-09
Author(s):  
Fábio Castro Verçoza ◽  
Roberta Ferreira Bion

Este estudo teve como objetivo investigar a dinâmica da polinização de Lantana fucata Lindley por Parides ascanius Cramer na restinga da Área de Proteção Ambiental de Grumari, localizada na região oeste do município do Rio de Janeiro. O estudo foi desenvolvido entre janeiro a dezembro de 2009, registrando-se o período de floração, o número de flores abertas por dia e dados sobre a morfologia, cor e odor das flores. A ocorrência de visitantes florais foi registrada ao longo do dia, observando-se o horário de visita e o comportamento intra-floral desempenhado. As flores de L. fucata são organizadas em capítulos e possuem antese diurna, iniciando às 6 horas e terminando às 17 horas. As flores medem 1,0 cm de comprimento, são de cor lilás, tubulosas e exalam odor suave e agradável. A espécie possui floração contínua e apresenta atributos florais típicos da psicofilia (polinização por borboletas). As borboletas observadas visitando as flores de L. fucata foram Mechanitis polymnia Bates “casa-branca”, P. ascanius “borboleta-da-praia” e Mimoides lysithous harrisianus Swainson “falsa-borboleta-da-praia”. Destas, P. ascanius se destacou como polinizador efetivo devido à assiduidade de visitas às flores durante o ano inteiro. O presente estudo evidencia a relação mutualística existente entre L. fucata e P. ascanius, estabelecida entre a oferta de néctar como recurso alimentar à borboleta, enquanto que esta é responsável pela polinização das flores e pela formação de frutos e sementes. Pollination of Lantana fucata Lindley (Verbenaceae) by Parides ascanius Cramer (Lepidoptera: Papilionoidea) in the Grumari Restinga, Rio de Janeiro, RJ Abstract. This study investigated the dynamics of pollination of Lantana fucata Lindley by Parides ascanius Cramer in the restinga place of Environmental Protection Area of Grumari, located in western Rio de Janeiro. The study was conducted from january to december 2009, recording the flowering period, the number of open flowers per day and data on morphology, color and odor of flowers. The occurrence of floral visitors was recorded throughout the day, observing the time of visit and conduct intra-floral played. The flowers of L. fucata are organized into chapters and have diurnal anthesis, starting at 6 am and ending as 5 pm. The flowers are 1.0 cm in length, are colored purple, tubular and exude odor mild and pleasant. The species has a continuous flowering and has floral attributes typical of psicophily (pollination by butterflies). Butterflies observed visiting flowers of L. fucata were Mechanitis polymnia Bates, P. ascanius and Mimoides lysithous harrisianus Swainson. Of these, P. ascanius stood out as effective pollinator because of the attendance of visits to flowers during the whole year. This study highlights the mutualistic relationship between L. fucata and P. ascanius established between the supply of nectar as a food resource to the butterfly, while this is responsible for pollinating the flowers and the formation of fruits and seeds.


2006 ◽  
Vol 52 (8) ◽  
pp. 982-987 ◽  
Author(s):  
V. Hatje ◽  
F. Barros ◽  
D.G. Figueiredo ◽  
V.L.C.S. Santos ◽  
M.C. Peso-Aguiar

Author(s):  
Yasunori Goto ◽  
Hiroomi Eguchi ◽  
Masaru Iida

Abstract In the automotive IC using thick-film silicon on insulator (SOI) semiconductor device, if the gettering capability of a SOI wafer is inadequate, electrical characteristics degradation by metal contamination arises and the yield falls. At this time, an automotive IC was made experimentally for evaluation of the gettering capability as one of the purposes. In this IC, one of the output characteristics varied from the standard, therefore failure analysis was performed, which found trace metal elements as one of the causes. By making full use of 3D perspective, it is possible to fabricate a site-specific sample into 0.1 micrometre in thickness without missing a failure point that has very minute quantities of contaminant in a semiconductor device. Using energy dispersive X-ray, it is possible to detect trace metal contamination at levels 1E12 atoms per sq cm. that are conventionally detected only by trace element analysis.


2017 ◽  
Vol 51 (8) ◽  
pp. 4173-4181 ◽  
Author(s):  
Robert J. Rossi ◽  
Daniel J. Bain ◽  
Aubrey L. Hillman ◽  
David P. Pompeani ◽  
Matthew S. Finkenbinder ◽  
...  

2021 ◽  
Vol 51 ◽  
Author(s):  
Karoline Paulino Costa ◽  
Messulan Rodrigues Meira ◽  
Silma Leite Rocha ◽  
Thaíse Ohana Moura Fernandes ◽  
Ernane Ronie Martins

ABSTRACT Dimorphandra mollis is native to the Brazilian Savanna and has social, economic and environmental importance. This study aimed to evaluate the yield and diametric distribution of Dimorphandra mollis Benth. in the Pandeiros River Environmental Protection Area, in Bonito de Minas, Minas Gerais state, Brazil. Five areas were assessed, totaling five hectares (50 plots of 1,000 m2). The total number of plants, yield per plant (2018, 2019 and 2020) and diameter at breast height were recorded, considering all trees from the plots in diametric classes. The average diameter at breast height of all plants was 6.05 ± 3.07 cm, and that of the plants that produced in at least one of the evaluated years was 7.46 ± 3.15 cm. The diametric distribution showed classes with no individuals, indicating imbalance, as well as a trend to inverted “J” shape. The maximum annual yield was 8.08 kg ha-1 of dry fruits (2019), the minimum 0.42 kg ha-1 (2018), and the average 2.74 kg ha-1, with biennial characteristic.


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