scholarly journals Aspectos ecológicos de briofitas em areas preservadas de mata atlantica, Rio Janeiro, Brasil

2002 ◽  
Vol 22 (1) ◽  
pp. 77-102 ◽  
Author(s):  
M. Isabel M. N. De Oliveira-e-Silva ◽  
Adauto Ivo Mila ◽  
Olga Yano
Keyword(s):  
Human Activity ◽  
Rio De Janeiro ◽  
Similarity Index ◽  
The State ◽  
Absolute Frequency ◽  
Tropical Rain Forests ◽  
Rain Forests ◽  
Mata Atlântica ◽  
Floristic Survey ◽  
Morphological Adaptations

This paper aims at comparing the continental (Mangaratiba) and insular (Ilha Grande) bryoflora in the state of Rio de Janeiro. The floristic survey of these areas has resulted in the identification of 231 bryophyte species, the similarity index being 69%. The highest index of specific diversity occurs in a track that is not under the influence of local human activity. The bryoflora is represented by families typical of tropical rain forests such as Lejeuneaceae, which also presents the highest index of specific diversity. The majority of the species presents rare absolute frequency, and is saxicolous, umbraticolous and ombrophilous. Nevertheless, these characteristics are not limiting as morphological adaptations allow for the colonization of different environments and substrates.

scholarly journals AVALIAÇÃO DA DIVERSIDADE DE ESPÉCIES NATIVAS PRODUZIDAS NOS VIVEIROS FLORESTAIS DO ESTADO DO RIO DE JANEIRO

FLORESTA ◽  
2014 ◽  
Vol 44 (3) ◽  
pp. 369 ◽  
Author(s):  
Jorge Makhlouta Alonso ◽  
Paulo Sérgio Dos Santos Leles ◽  
Telmo Borges Silveira Filho ◽  
Carlos Alberto Bernardo Mesquita ◽  
Marcos Lima Pereira ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Native Species ◽  
Forest Restoration ◽  
The State ◽  
Forest Species ◽  
Mata Atlântica ◽  
Production Manager ◽  
Mata Atlantica ◽  
Forest Nurseries

O objetivo deste trabalho foi avaliar a diversidade de espécies florestais nativas produzidas nos viveiros do estado do Rio de Janeiro. O levantamento e diagnóstico foram realizados durante os meses de fevereiro, março e abril de 2010, sendo incluídos os viveiros que produziam mudas de espécies florestais da Mata Atlântica. O trabalho de campo consistiu em visitas a 70 viveiros florestais, nos quais foi requerida a lista das espécies produzidas e realizada entrevista com o responsável, sendo preenchido um questionário englobando diversos temas relacionados à produção de mudas. Foram observadas 277 espécies florestais nativas da Mata Atlântica sendo produzidas nos viveiros, que, em média, trabalham com 56 espécies nativas. A diversidade total de espécies florestais da Mata Atlântica produzidas nos viveiros do Estado do Rio de Janeiro é baixa, assim como a diversidade média, já que mais da metade dos viveiros trabalha com uma listagem de 50 ou menos espécies, número insuficiente considerando a diversidade de espécies florestais presentes nas diferentes formações vegetais do estado.Palavras-chave: Mudas florestais; restauração florestal; Mata Atlântica. AbstractAssessment of diversity of native species produced in forest nurseries of Rio de Janeiro State. The objective of this paper was to evaluate the diversity of native species produced by nurseries in the State of Rio de Janeiro. The diagnostic and survey were conducted during the months of February, March and April of the year 2010, the research included all nurseries that produced seedlings of Atlantic Forest species. The fieldwork consisted of visits to the 70 surveyed nurseries, in which a list of the species produced in the nursery was requested and the seedling production manager was interviewed, filling in a questionnaire covering various topics related to seedlings production. We observed 277 forest species native from the Atlantic Forest produced in the nurseries. In average, the nurseries produce 56 different native species. The total diversity of native species produced in the State of Rio de Janeiro is low, as well as the mean diversity, since more than half of the nurseries work with a list of 50 or fewer species, what is insufficient considering the diversity of forest species that occur in the different vegetation types of the state.Keywords: Forest seedlings; forest restoration; Atlantic Forest.

scholarly journals A Bryophyte Checklist of the Ecological Reserve of Gurjaú, Pernambuco, Brazil

2005 ◽  
Vol 26 (1) ◽  
pp. 1-12
Author(s):  
Shirley Rangel Germano ◽  
Kátia Cavalcanti Pôrto
Keyword(s):  
Atlantic Forest ◽  
Endemic Species ◽  
The State ◽  
Forest Fragments ◽  
Tropical Rain Forests ◽  
Rain Forests ◽  
Brazilian Species ◽  
Ecological Reserve ◽  
Voucher Specimens

A bryophyte checklist of the Ecological Reserve of Gurjaú (08º10’00’’-08º15’00”S; 35º02’30”- 35º05’00”W), a remnant of the Atlantic Forest in the State of Pernambuco, has been compiled. The Reserve covers an area of approximately 1362 ha, including several forest fragments of diverse sizes and stages of conservation. Specimens collected during the years 2000 and 2001, and voucher specimens from the UFP Herbarium at the Federal University of Pernambuco (UFPE) were analyzed. Bryophytes were collected on live and dead trunks, rocks, leaves and soil. The studied bryoflora is composed of 53 species of liverworts, 37 species of mosses and one hornwort. Among the twenty-three registered families, Lejeuneaceae (41 spp.) was the most representative one with the highest generic and specific richness, which confirms its status as predominant in tropical rain forests. Fissidens (7 spp.), Lejeunea and Cheilolejeunea (6 spp.), and Calymperes (4 spp.) were the most representative genera. The studied bryoflora is predominantly composed of species of neotropical distribution, widely spread throughout Brazil. The presence of an endemic species of the Atlantic Forest, Vitalianthus bichlerianus (Pôrto & Grolle) Schust. & Giancotti, and some other exclusively Brazilian species, e.g., Riccardia regnellii (Ängstr.) Hell have been recorded from the site.

scholarly journals Freshwater Raphidophyceae from the State of Rio de Janeiro, Southeast Brazil

2010 ◽  
Vol 10 (3) ◽  
pp. 323-331 ◽  
Author(s):  
Mariângela Menezes ◽  
Carlos Eduardo de Mattos Bicudo
Keyword(s):  
Rio De Janeiro ◽  
New Records ◽  
Light And Electron Microscopy ◽  
Low Ph ◽  
The State ◽  
Floristic Survey ◽  
Acidic Waters ◽  
Gonyostomum Semen ◽  
First Time ◽  
Freshwater Environments

This paper presents a floristic survey of Raphidophyceae (Heterokontophyta) found in three freshwater environments in the municipality of Rio de Janeiro, based on samples collected bimonthly from September 1988 to August 1991. A total of 117 samples were collected, and eight of these contained cells of raphidophytes. Altogether five raphidophyte species, representing the genera Gonyostomum (2), Merotrichia (1), and Vacuolaria (2) were identified. Four species are new records for the State of Rio de Janeiro (G. semen, G. depressum, M. bacillata, V. virescens var. virescens), and one is reported for the first time in Brazil (V. viridis). Gonyostomum semen and V. virescens var. virescens are the most widespread taxa in the area, found in 50 and 25% of the total of samples, respectively. With the exception of M. bacillata and V. viridis, most of the taxa occurred in a natural oligotrophic lake with acidic waters, in accordance with the preference of raphidophytes for low pH. This study clearly supports the need for more extensive taxonomic surveys on these raphidophytes, based on field and cultured samples and under light and electron microscopy, to confirm the taxonomic identity of the previously reported species and to expand the knowledge of the taxa in Brazil. The bloom of G. semen reported here, together with its gradual dominance in the aquatic systems in the State of Rio de Janeiro seems to conform to the recent spread of this species into new areas, and can be viewed as a potential risk for environmental health.

scholarly journals Flagellate green algae from four water bodies in the state of Rio de Janeiro, Southeast Brazil

Hoehnea ◽  
2008 ◽  
Vol 35 (3) ◽  
pp. 435-468 ◽  
Author(s):  
Mariângela Menezes ◽  
Carlos Eduardo de Mattos Bicudo
Keyword(s):  
Green Algae ◽  
Rio De Janeiro ◽  
Morphological Analysis ◽  
The State ◽  
Water Bodies ◽  
New Combination ◽  
Floristic Survey ◽  
Southeast Brazil ◽  
First Time ◽  
Janeiro State

Floristic survey of flagellate green algae (Chlorophyceae and Prasinophyceae) from four water bodies in the state of Rio de Janeiro, southeast Brazil. Samples were collected bimonthly from September 1988 to August 1991. Thirty-five taxa of which 31 in Chlorophyceae (24 Chlamydomonadales and seven Volvocales) and four in Prasinophyceae (Polyblepharidales) were identified. Twenty-three taxa are new records for Brazil and 31 are registered for the first time for Rio de Janeiro State. On basis of cell shape, location of the nucleus and degree of longitudinal striations on the chloroplast surface a new combination, Vitreochlamys lefevrei (Bourr.) Menezes & C. Bicudo, is proposed. Integrating studies among morphological analysis on natural/cultured material and characterizing of reproduction/life cycle as well the correlating between the occurrence of the species and environmental conditions are needed in order to better knowledge the degree of phenotypic plasticity within the members of the flagellate green algae in the country.

scholarly journals Análise da composição cianobacteriana das esteiras pustulares em salina, Araruama, Rio de Janeiro

2007 ◽  
Vol 30 (1) ◽  
pp. 175-180
Author(s):  
Loreine Hermida da Silva e Silva ◽  
Fabiane Feder ◽  
Deise De Oliveira Delfino ◽  
Frederico Alves dos Santos Lopes
Keyword(s):  
Optical Microscopy ◽  
Rio De Janeiro ◽  
The State ◽  
Salt Precipitation ◽  
The West ◽  
Morphological Adaptations ◽  
Set Up ◽  
The City ◽  
Cabo Frio

Julieta saline receives water from lagoa de Araruama, which is located in the state of Rio de Janeiro, to the East of the city of Araruama and to the west of the city of Cabo Frio, between 22º49' and 22º57' S latitude and 42º00' and 42º23' W longitude. It is composed by a series of soil tanks obtained by natural excavation, where water gradually concentrates through natural evaporation until salt precipitation. The reservoirs can be divided in three types, according to their activity: cargo, evaporator and crystallizer tanks. The process of making such reservoirs waterproof is enabled by a fine layer of algae which is formed naturally with the passing of time. This study is based on monthly collects within the period ranging from May, 2004 to October, 2004, along three collection stations set up in different saline reservoirs. To identify the microbic composition, fresh, semi-permanent and permanent laminae were obtained and their analysis were performed by means of optical microscopy. The analysis revealed a total of twenty cyanobacterial types. In all layers, a predominant amount of oval spherical forms was observed. The predominance of cyanobacteria is justified by the fact that they are carriers of high morphological adaptations which enables them to survive in various types of environments and be predominant in hypersaline sites.

Integração local da população refugiada no estado do Rio de Janeiro:

Revista Prumo ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 42-53
Author(s):  
Ariane Rego de Paiva ◽  
Roberta Gomes Thomé
Keyword(s):  
Rio De Janeiro ◽  
Social Protection ◽  
The State ◽  
Refugee Population ◽  
Local Integration

This work presents a problematization about the local integration of refugees as one of the lasting solutions proposed by the UNHCR and the present challenges for the consolidation of policies of social protection for this segment in the state of Rio de Janeiro. This study was made through the bibliographic analisis and systematization of a workshop about the thematics carried with governamental and non-governamental agents and leaderships in the refugee population in the occasion of the seminar Mobility Crossroads: knowledge and practices in protection policies for refugee populations and migrants in vulnerable situation, which occurred in November 2017, organized by Cátedra Sérgio Vieira de Mello of PUC-Rio.

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