Stratigraphic analysis and geomorphological reconstruction of Grumari coastal plain, Rio de Janeiro, Brazil

2020 ◽  
pp. 103031
Author(s):  
Talissa Mira ◽  
Saulo S. Martins ◽  
Suelen P. Gouvêa ◽  
Francisco Dourado
Keyword(s):  
Coastal Plain ◽  
Rio De Janeiro ◽  
Stratigraphic Analysis

INVESTIGATION OF THE INTERNAL STRUCTURE AND EVOLUTION OF THE HOLOCENE BARRIER OF MARICÁ (RIO DE JANEIRO)

2016 ◽  
Vol 33 (3) ◽  
Author(s):  
Carolina Pereira Silvestre ◽  
André Luiz Carvalho da Silva ◽  
Maria Augusta Martins da Silva ◽  
Amilsom Rangel Rodrigues
Keyword(s):  
Internal Structure ◽  
Coastal Plain ◽  
Rio De Janeiro ◽  
The Holocene

ABSTRACT. The objective of this study is the identification of the internal structure of the Holocene barrier of the Maricá coastal plain (Rio de Janeiro) for the understanding of the... RESUMO. O presente estudo objetivou identificar a estrutura interna da barreira holocênica buscando compreender a evolução da planície costeira de Maricá (Rio de Janeiro). A geomorfologia regional...

scholarly journals Nests, Eggs, and Nestlings of the Restinga Antwren Formicivora littoralis (Aves: Thamnophilidae)

2013 ◽  
Vol 85 (2) ◽  
pp. 547-552 ◽  
Author(s):  
FLAVIA G. CHAVES ◽  
MAURICIO B. VECCHI ◽  
THIAGO F.S. LAURINDO ◽  
MARIA ALICE S. ALVES
Keyword(s):  
Coastal Plain ◽  
Rio De Janeiro ◽  
Maximum Diameter ◽  
Congeneric Species ◽  
Nest Material ◽  
Minimum Diameter ◽  
Janeiro State ◽  
Vegetable Fiber

We describe the nest, eggs, and nestlings of the Restinga Antwren (Formicivora littoralis), an endangered bird of Restinga ecosystem (sandy coastal plain vegetation) that is endemic to Rio de Janeiro state. Twelve nests were found at the edges of trails or natural gaps at Massambaba Restinga region, in different supporting plants and heights from the ground (X ± SD 1.27 ± 0.97 m, range 0.27 to 3.45 m). Nests were cup-shaped and were in horizontal forks attached to branches at three to five points with whitish, soft, and thin cotton-like vegetable fiber. The nests' cup shape and measurements were similar to congeneric species, but nest material was different. Eggs were white with brown spots concentrated on the large end or around the middle, giving the appearance of a rough brown ring. Their mean (± SD) minimum diameter was 13.1 ± 0.34 mm, with maximum diameter of 18.0 ± 0.38 mm, and mass of 1.7 ± 0.18 g (n = 8). We found two nestlings completely naked on their first day after hatching.

Vriesea roberto-seidelii (Bromeliaceae): taxonomy, distribution, and conservation based on new records from the Atlantic Forest of Bahia, Espírito Santo, and Rio de Janeiro, Brazil

Phytotaxa ◽  
2018 ◽  
Vol 367 (2) ◽  
pp. 179
Author(s):  
LEONARDO M. VERSIEUX ◽  
TALITA MOTA MACHADO
Keyword(s):  
Coastal Plain ◽  
Rio De Janeiro ◽  
Type Specimen ◽  
Plant Size ◽  
Flowering Plant ◽  
Additional Material ◽  
Chapada Diamantina ◽  
Espírito Santo ◽  
Southern Bahia ◽  
Espirito Santo

Vriesea roberto-seidelii is redescribed based on new specimens from Espírito Santo and from Rio de Janeiro states. It is a poorly recorded species, currently represented only by a few incomplete specimens in Brazilian herbaria. Beside the limited taxonomic treatment, we show illustrated photos with additional material supplied to complement the morphology and geographical distribution. Although originally described as related to V. lancifolia, we believe that this taxon is morphologically more closely related to V. longiscapa, from which it can be distinguished by the size of the flowering plant, size of the inflorescence and peduncle, floral bract and petal characteristics. Our data also indicate that its provenance, as mentioned for the type specimen, is incorrect. Rather than occurring in rocky fields from Chapada Diamantina habitats, the species is confined to sandy coastal plain vegetation from southern Bahia, northern Espírito Santo, and Rio de Janeiro. Pictures of live specimens, updated distributional map, and additional specimens are presented.

scholarly journals Assembleia de Moluscos da Região do Pântano do Ramalho, Cabo Frio, RJ: Indicadores Biológicos de Variação do Nível Relativo do Mar Durante o Holoceno

2011 ◽  
Vol 34 (2) ◽  
pp. 46-52
Author(s):  
Aline Meneguci da Cunha ◽  
Fábio Ferreira Dias ◽  
Vera Maria Medina da Fonseca ◽  
João Wagner de Alencar Castro
Keyword(s):  
Sea Level ◽  
Coastal Plain ◽  
Rio De Janeiro ◽  
Wide Distribution ◽  
Northern Coast ◽  
Mollusk Shells ◽  
Low Degree ◽  
Absolute Dating ◽  
Dating Method ◽  
Cabo Frio

In the coastal plain of the Una river, county of the Cabo Frio, the northern coast of the State of Rio de Janeiro, are found biological evidences of change in relative sea level during the Holocene, represented by dense accumulations and wide distribution composed predominantly of mollusk shells. This paper aims to describe a new occurrence of accumulation of mollusk shells in the region of Ramalho's marsh, coastal plain of the Una river. The study area is located within the Portal de Buzios condominium, Amaral Peixoto Highway (RJ-106) at Km 125 between the coordinates 42º03'29"W and 22 º44'53"S. The survey of altimetry database shells was performed by tracking DGPS Pro Mark 2. To perform the taxonomic analysis, paleoecological, and geochronological were collected approximately 1.75 dm³ of mollusk shells in a trench of 0.50 cm, excavated at the edge of a small dam in the area of the Portal de Búzios condominium. Approximately 100 grams of the specie Anomalocardia brasiliana shells were sent to the absolute dating method radicarbon to Beta Analytic Inc., Miami - USA. Data obtained from a DGPS Pro Mark 2 show an altitude of 0,90 m above actual sea level. Only three species of mollusks were identified in this filing: Anomalocardia brasiliana, Lucina pectinata and Crassostrea rizophorae. A. brasiliana and L. pectinata have not joined infaunal habit, live in muddy or sandy bottoms. C. rizophorae epifaunal habit has stuck, living in rocky and gravel substrata. The three species have water depths ranging from 0 to 30 m depth. Most of the shells found present a low degree of fragmentation and corrosion, indicating little or none transportation. Some shells of L. pectinata and A. brasiliana are articulated, and the shells of C. rizophorae are embedded in the shells of other species. The conventional age of the deposit is 5780 À 70 years BP, calibrated by CALIB 5.0 program in 5997-6333 cal. years BP. These data are similar ages found in deposits along the northern coast of Rio de Janeiro state, Brazil.

Two new species of Portanini (Hemiptera: Cicadellidae: Aphrodinae) from Southeastern Brazil

Zootaxa ◽  
2016 ◽  
Vol 4196 (3) ◽  
pp. 399 ◽  
Author(s):  
MÁRCIO FELIX ◽  
GABRIEL MEJDALANI
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Coastal Plain ◽  
Rio De Janeiro ◽  
Southeastern Brazil ◽  
Two New Species ◽  
Janeiro State

Two new species, Portanus restingalis and Paraportanus marica, are described and illustrated from Restinga de Maricá, a sandy coastal plain in Rio de Janeiro State, Southeastern Brazil. Comparative notes on the two new species are given. Portanus youngi and Paraportanus eburatus are newly recorded from Brazil and Guyana, respectively. A checklist of all known species of Portanini with their geographic distribution is provided. 

scholarly journals ANALYSIS OF PARTICULATE ORGANIC MATTER IN HOLOCENE SEDIMENTS OF COASTAL PLAIN FROM PERO BEACH, CABO FRIO, RIO DE JANEIRO, BRAZIL

2016 ◽  
Vol 1 (2) ◽  
Author(s):  
Taísa Camila Silveira de Souza ◽  
Marcelo De Araujo Carvalho ◽  
Fabio Ferreira Dias ◽  
Cintia Ferreira Barreto ◽  
Alex Da Silva de Freitas ◽  
...  
Keyword(s):  
Organic Matter ◽  
Particulate Organic Matter ◽  
Coastal Plain ◽  
Rio De Janeiro ◽  
Holocene Sediments ◽  
Cabo Frio
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