AMOURINS SHELLMOUND: UNCOVERING BIODIVERSITY AND CHRONOLOGY THROUGH CHARCOAL ANALYSES

ABSTRACT In paleoenvironmental research, several proxies are used to reconstruct climate and vegetation. The establishment of a chronological framework allows for the association of different proxies and correlation of events happening in different geographic areas. Cultural deposits, such as the shellmounds found along the coast of Brazil, play an important role in paleoenvironmental interpretations. Here, we have employed anthracological analysis in charcoal fragments from the Amourins shellmound, located at the margins of the Guanabara Bay, Rio de Janeiro. This allowed for the taxonomic identification and selection of short-lived trees and specific parts of plants for accurate radiocarbon dating. We recorded genera and families typical of the Atlantic Forest, restinga forest, open restinga and mangrove. The 14C ages of charred nuts from different occupational layers range from 3807 ± 35 to 3503 ± 70 BP and a sequential chronological model was built, relating the predominance of mangrove vegetation to the period between 4130–3960 cal BP.

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Categorias analíticas do espaço e Turismo: o exemplo da Fortaleza de Santa Cruz, Niterói/RJ

GEOgraphia ◽

10.22409/geographia2006.816.a13523 ◽

2010 ◽

Vol 8 (16) ◽

Author(s):

Miguel Ângelo Ribeiro

Keyword(s):

Social Sciences ◽

Urban Space ◽

Rio De Janeiro ◽

Future Generations ◽

Guanabara Bay ◽

Single Family ◽

Spatial Dynamic ◽

Santa Cruz ◽

Military Installations ◽

The City

O objetivo que permeia a presente pesquisa é utilizar a Fortaleza de Santa Cruz, localizada no bairro de Jurujuba, em Niterói, construída em 1555, na entrada da barra da Baía de Guanabara, como foco de antílise, ressaltando a importância deste fixo social enquanto atração turística e de lazer, incluindo a cidade de Niterói no circuito destas atividades, complementares à cidade do Rio de Janeiro; além de abordar conceitos e categorias analíticas, oriundos das ciências sociais, principalmente provenientes da Geografia, pertinentes ao estudo das atividades em tela. Neste contexto, na dinâmica espacial da cidade de Niterói, o processo de mudança de função dos fixos sociais têm sido extraordinário. Residencias unifamiliares, prédios e até mesmo fortificações militares, verdadeiras monumentalidades, foram refuncionalizadas, passando por um processo de turistificação. Assim, a refuncionalização da respectiva Fortaleza em espaço cultural toma-se um importante atrativo da história, do patrimônio, da cultura, marcando no espaço urbano sua expressões e monumentalidade, criada pelo homem como símbolo de seus ideais, objetivos e atos, constituindo-se em um legado as gerações futuras, formando um elo entre passado, presente e futuro. Abstract This paper focuses on Santa Cruz Fortress, built in 1555 in Jurujuba (Niterói), to guard the entrance of Guanabara bay, and stresses its role as a towist attraction and leisure' area, as a social fix which links the city of Niterói to the complementary circuit of these activities in the city of Rio de Janeiro. The study uses important concepts and analytic categories fiom social sciences, particularly fiom Geography.In the spatial dynamic of the city of Niterói, change in functions of social fuces has been extraordinary. Single-family dwellings, buildings and even military installations have been re-functionalized, undergoing a process of touristification. In that way, the refunctionalization of the Fortress as a cultural space provides an important attraction in the domains of history, patrimony, and culture, providing the urban space with an expression of monumentality, created by man as a symbol of his ideals, aims and actions, a legacy to future generations forming a link between past, present and future.

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

Regional Studies in Marine Science ◽

10.1016/j.rsma.2020.101143 ◽

2020 ◽

Vol 35 ◽

pp. 101143

Author(s):

Michele Fernandes ◽

Estefan Monteiro da Fonseca ◽

Leonardo da Silva Lima ◽

Susanna Eleonora Sichel ◽

Jessica de Freitas Delgado ◽

...

Keyword(s):

Trace Metal ◽

Environmental Protection ◽

Metal Contamination ◽

Rio De Janeiro ◽

Estuarine System ◽

Guanabara Bay ◽

Trace Metal Contamination ◽

Environmental Protection Area ◽

Protection Area

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Testing the Effectiveness of Protocols for Removal of Common Conservation Treatments for Radiocarbon Dating

Radiocarbon ◽

10.1017/rdc.2017.68 ◽

2017 ◽

Vol 60 (1) ◽

pp. 35-50 ◽

Cited By ~ 15

Author(s):

Fiona Brock ◽

Michael Dee ◽

Andrew Hughes ◽

Christophe Snoeck ◽

Richard Staff ◽

...

Keyword(s):

Organic Solvent ◽

Vinyl Acetate ◽

Radiocarbon Dating ◽

Cellulose Nitrate ◽

Acid Base ◽

Acrylic Polymers ◽

Archaeological Wood ◽

Conservation Treatment ◽

Chemical Pretreatments ◽

Selection Of

AbstractTo achieve a reliable radiocarbon (14C) date for an object, any contamination that may be of a different age must be removed prior to dating. Samples that have been conserved with treatments such as adhesives, varnishes or consolidants can pose a particular challenge to 14C dating. At the Oxford Radiocarbon Accelerator Unit (ORAU), common examples of such substances encountered include shellac, the acrylic polymers Paraloid B-67 and B-72, and vinyl acetate-derived polymers (e.g. PVA). Here, a non-carbon-containing absorbent substrate called Chromosorb® was deliberately contaminated with a range of varieties or brands of these conservation treatments, as well as two cellulose nitrate lacquers. A selection of chemical pretreatments was tested for their efficiency at removing them. While the varieties of shellac and Paraloid tested were completely removed with some treatments (water/methanol and acetone/methanol/chloroform sequential washes, respectively), no method was found that was capable of completely removing any of the vinyl acetate-derived materials or the cellulose nitrate lacquers. While Chromosorb is not an exact analog of archaeological wood or bone, for example, this study suggests that it may be possible to remove aged shellac and Paraloid from archaeological specimens with standard organic solvent-acid-base-acid pretreatments, but it may be significantly more difficult to remove vinyl acetate-derived polymers and cellulose nitrate lacquers sufficiently to provide reliable 14C dates. The four categories of conservation treatment studied demonstrate characteristic FTIR spectra, while highlighting subtle chemical and molecular differences between different varieties of shellac, Paraloid and cellulose nitrate lacquers, and significant differences between the vinyl acetate derivatives.

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Environmental and Sanitary Conditions of Guanabara Bay, Rio de Janeiro

Frontiers in Microbiology ◽

10.3389/fmicb.2015.01232 ◽

2015 ◽

Vol 6 ◽

Cited By ~ 57

Author(s):

Giovana O. Fistarol ◽

Felipe H. Coutinho ◽

Ana Paula B. Moreira ◽

Tainá Venas ◽

Alba Cánovas ◽

...

Keyword(s):

Rio De Janeiro ◽

Guanabara Bay ◽

Sanitary Conditions

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Trace metal contamination in mangrove sediments, Guanabara Bay, Rio de Janeiro, Brazil

Journal of the Brazilian Chemical Society ◽

10.1590/s0103-50532007000600014 ◽

2007 ◽

Vol 18 (6) ◽

pp. 1194-1206 ◽

Cited By ~ 17

Author(s):

Cassia O. Farias ◽

Claudia Hamacher ◽

Angela de Luca R. Wagener ◽

Reinaldo C. de Campos ◽

José M. Godoy

Keyword(s):

Trace Metal ◽

Metal Contamination ◽

Rio De Janeiro ◽

Guanabara Bay ◽

Mangrove Sediments ◽

Trace Metal Contamination

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Habitat selection by anurofauna community at rocky seashore in coastal Atlantic Forest, Southeastern Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842013000300011 ◽

2013 ◽

Vol 73 (3) ◽

pp. 533-542 ◽

Cited By ~ 2

Author(s):

RC. Pontes ◽

RT. Santori ◽

FC. Gonçalves e Cunha ◽

JAL. Pontes

Keyword(s):

Atlantic Forest ◽

Rainy Season ◽

Water Storage ◽

Southeastern Brazil ◽

Brazilian Coast ◽

Water Storage Capacity ◽

Breeding Activity ◽

Amphibian Community ◽

Top View ◽

Selection Of

Rocky seashores are low granitic hills distributed along the southeastern Brazilian coast with xeric-like vegetation due to the shallow soil. Knowledge on amphibian communities and their reproductive patterns is especially reduced on this kind of environment. Herein, we present a framework of two years monitoring an amphibian community at a rocky seashore environment located at the protected area of Parque Estadual da Serra da Tiririca, municipality of Niterói, state of Rio de Janeiro, Brazil. We conducted diurnal and nocturnal searches for frogs in tank bromeliads, rocky surface and shrubby vegetation. Annual pattern of breeding activity of anurans was also estimated. Individuals of the most abundant tank-bromeliad, Alcantarea glaziouana were collected and measured according to several variables to understanding the selection of bromeliads by frogs. We checked the influence of the environmental conditions on amphibian abundance, association between the bromeliads measures, and the water storage in the tank. We recorded the species: Scinax aff. x-signatus; S. cuspidatus; S. littoreus; Thoropa miliaris and Gastrotheca sp. Bromeliads were the preferential habitat used by anurans. The nocturnal habit was predominant for all species and during diurnal searches, the specimens were found sheltered in bromeliads axils. The number of calling males as well as amphibian abundance was associated with the rainiest and warmest period of the year. The species S. littoreus was observed in breeding activity in the majority of sample period. Adult calling males of T. miliaris were observed especially in the rainy season. Rainfall and temperature combined are positively correlated to the total number of captured amphibians. However, individually, rainfall was not significantly correlated, while temperature was positively correlated with the amphibian abundance. Water storage capacity by bromeliads was correlated to characteristics and size of the plant. In the rainy season, the height of the plant and the diameter on top view were correlated with the occurrence of amphibians, while during the driest period there was no correlation among variables and the bromeliad usage by amphibians. Recorded species were strongly associated to the Atlantic Forest domain. Nevertheless, the occupation of rocky seashores by anurans may be more associated with the specialized reproductive modes presented by species, since there is no permanent water available in ponds or streams.

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An albino armored catfish Schizolecis guntheri (Siluriformes: Loricariidae) from an Atlantic Forest coastal basin

Neotropical Ichthyology ◽

10.1590/s1679-62252005000100009 ◽

2005 ◽

Vol 3 (1) ◽

pp. 123-125 ◽

Cited By ~ 9

Author(s):

Marcelo F. G. de Brito ◽

Érica P. Caramaschi

Keyword(s):

Atlantic Forest ◽

Rio De Janeiro ◽

Southeastern Brazil ◽

Janeiro State ◽

Coastal Basin

We report here on an albino specimen of Schizolecis guntheri caught in the rio Bonito in the rio Macaé basin, Rio de Janeiro State, southeastern Brazil. The hypothesis that albinism is more common in fishes with cryptobiotic and/or nocturnal habits is strengthened by additional records of this chromatic anomaly.

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Pollen Storage by Melipona quadrifasciata anthidioides in a Protected Urban Atlantic Forest Area of Rio de Janeiro, Brazil

Pot-Pollen in Stingless Bee Melittology ◽

10.1007/978-3-319-61839-5_8 ◽

2018 ◽

pp. 103-109 ◽

Cited By ~ 1

Author(s):

Ortrud Monika Barth ◽

Alex da Silva de Freitas ◽

Bart Vanderborgth

Keyword(s):

Atlantic Forest ◽

Rio De Janeiro ◽

Forest Area ◽

Pollen Storage ◽

Melipona Quadrifasciata

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Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

Biota Neotropica ◽

10.1590/1676-06032014007414 ◽

2014 ◽

Vol 14 (3) ◽

Cited By ~ 6

Author(s):

Israel Dias de Carvalho ◽

Rildo de Oliveira ◽

Alexandra dos Santos Pires

Keyword(s):

Atlantic Forest ◽

Rio De Janeiro ◽

Camera Traps ◽

Large Mammals ◽

Terrestrial Mammals ◽

Mammal Conservation ◽

Pecari Tajacu ◽

Local Extinctions ◽

Global Threat ◽

Janeiro State

Medium and large-sized terrestrial mammals develop important functions in ecosystems maintenance. However, this group is the most vulnerable to local extinctions, through habitat loss or hunting. This study inventoried the community of medium and large mammals in the Reserva Ecológica de Guapiaçú (REGUA), Cachoeiras de Macacu, RJ, providing data on species composition, richness and abundance. Species were registered through the use of camera traps, sign survey and visual encounters on pre-existing trails and roads. The study was conducted from January to October 2012, with each month considered as a sample unit. An effort of 1568 cameras-day and 120 km traveled, resulted on 302 records of 22 species of medium and large-sized mammals, belonging to eight orders. This value corresponds to more than three-quarters of the richness described from this group in the Atlantic Forest of Rio de Janeiro state. Five species are under some level of regional, national or global threat. Three game species, Pecari tajacu, Cuniculus paca and Dasyprocta leporina were abundant in the area. The observed richness was comparable to that found in other studies conducted in rain forests. Thus, for its high number of species, including those under some degree of threat, we conclude that REGUA is an important area to mammal conservation, especially in the Atlantic Forest of Rio de Janeiro state.

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