Target carbonaceous rock exploration in the central South region of Rio de Janeiro State

A atividade mineral no estado do Rio de Janeiro tem, essencialmente, importância local, pois, de maneira geral, não produz bens minerais que sejam cotados em bolsas de valores como commodities (excluindo os hidrocarbonetos). De tal modo, o presente artigo teve por objetivo avaliar se ainda existe potencial para o aproveitamento econômico das rochas metacarbonáticas no centro-sul do estado do Rio de Janeiro. Para tanto, a metodologia utilizada para o desenvolvimento do presente estudo incluiu revisão bibliográfica; compilação de dados inventariados juntamente com os dados dos trabalhos de campo, das análises químicas e mineralógicas; e confecção de um mapa temático, cujo principal objetivo foi indicar áreas potenciais para pesquisas geológicas. O resultado desta pesquisa indicou uma anomalia bastante moderada para a ocorrência de mármores impuros no centro-sul do Rio de Janeiro. No entanto, as características dos corpos, no que diz respeito às suas dimensões e enquadramento geológico, não são favoráveis para a existência de um grande depósito de rocha metacarbonática na área de estudo.The mining activity in the State state of Rio de Janeiro has essentially regional importance, because, in general, does not produce mineral commodities goods that are quoted on stock exchanges and as commodities (excluding oilthe hydrocarbons ). Therefore, this article is wasintended to evaluate if there is still potential for economic exploitation of the carbonate rocks in the center-south of the sSstate of Rio de Janeiro. Therefore, the methodology used for the development of this study included literature review, and compilation of the inventory data, along with and the data from field studies, the chemical and mineralogical analysis, producing a thematic map, whose main purpose is to indicate potential areas for geological research. The result of this research indicated a moderate anomaly for the occurrence of impure marbles in the center-south of Rio de Janeiro. However, the characteristics of the bodies, with respect toconcerning their size and geological framework, preclude the existence of a large deposit of carbonate rock in the study area

The complete genome sequence of Chromobacterium violaceum reveals remarkable and exploitable bacterial adaptability

Chromobacterium violaceum is one of millions of species of free-living microorganisms that populate the soil and water in the extant areas of tropical biodiversity around the world. Its complete genome sequence reveals (i) extensive alternative pathways for energy generation, (ii) ≈500 ORFs for transport-related proteins, (iii) complex and extensive systems for stress adaptation and motility, and (iv) wide-spread utilization of quorum sensing for control of inducible systems, all of which underpin the versatility and adaptability of the organism. The genome also contains extensive but incomplete arrays of ORFs coding for proteins associated with mammalian pathogenicity, possibly involved in the occasional but often fatal cases of human C. violaceum infection. There is, in addition, a series of previously unknown but important enzymes and secondary metabolites including paraquat-inducible proteins, drug and heavy-metal-resistance proteins, multiple chitinases, and proteins for the detoxification of xenobiotics that may have biotechnological applications

NEOTROPICAL ALIEN MAMMALS: a data set of occurrence and abundance of alien mammals in the Neotropics

Biological invasion is one of the main threats to native biodiversity. For a species to become invasive, it must be voluntarily or involuntarily introduced by humans into a nonnative habitat. Mammals were among first taxa to be introduced worldwide for game, meat, and labor, yet the number of species introduced in the Neotropics remains unknown. In this data set, we make available occurrence and abundance data on mammal species that (1) transposed a geographical barrier and (2) were voluntarily or involuntarily introduced by humans into the Neotropics. Our data set is composed of 73,738 historical and current georeferenced records on alien mammal species of which around 96% correspond to occurrence data on 77 species belonging to eight orders and 26 families. Data cover 26 continental countries in the Neotropics, ranging from Mexico and its frontier regions (southern Florida and coastal-central Florida in the southeast United States) to Argentina, Paraguay, Chile, and Uruguay, and the 13 countries of Caribbean islands. Our data set also includes neotropical species (e.g., Callithrix sp., Myocastor coypus, Nasua nasua) considered alien in particular areas of Neotropics. The most numerous species in terms of records are from Bos sp. (n = 37,782), Sus scrofa (n = 6,730), and Canis familiaris (n = 10,084); 17 species were represented by only one record (e.g., Syncerus caffer, Cervus timorensis, Cervus unicolor, Canis latrans). Primates have the highest number of species in the data set (n = 20 species), partly because of uncertainties regarding taxonomic identification of the genera Callithrix, which includes the species Callithrix aurita, Callithrix flaviceps, Callithrix geoffroyi, Callithrix jacchus, Callithrix kuhlii, Callithrix penicillata, and their hybrids. This unique data set will be a valuable source of information on invasion risk assessments, biodiversity redistribution and conservation-related research. There are no copyright restrictions. Please cite this data paper when using the data in publications. We also request that researchers and teachers inform us on how they are using the data