Viabilidade da cultura Cnidoscolus quercifolius POHL para produção de Biodiesel no semiárido nordestino

The northeastern semiarid is a region that presents a serious picture stagnation or slowness of the economic growth, beyond the presence of social pointers below of the averages national and regional. The half-dryness conditions become the improper region for many agricultural cultures, what it affects the local populations directly, as well as the economy that is based mainly on agriculture. Cnidoscolus quercifolius Pohl, popularly know as favelone is a native species of the semiarid region that withholds great potential for the development of the region in virtue of its multiple uses. Being an oleaginous, its production in familiar farmings makes with that biodiesel either for the misery an important alternative eradication for the possibility of occupation of enormous contingents of people. The present study it aims at to evaluate the germination of the faveleira without thorns under conditions of water and saline stresses, main stresses which the vegetal species of the semiarid one are submitted; beyond verifying the acceptance of the species for agriculturists of a cooperative in the city of Apodi/RN. The methodology used for germination corresponds to using treatments with polyethylene glycol and sodium chloride to assess water and salt stress respectively, being held in rolo. O system approach used for the verification of acceptance of faveleira was the use of interview with farmers cooperative in the study area determined. In this direction it was verified that the faveleira is a resistant species the conditions of drought and salinity of the ground, factor of great relevance, since one is about a species with high added value, making possible the development for the semiarid region. It was verified that the agriculturists are favorable the introduction of the faveleira and reveal receptive the idea to cultivate a species with potential for production of biodiesel

Dinâmica populacional do caranguejo-uçá, Ucides cordatus (Linnaeus, 1763) (CRUSTACEA, BRACHYURA, UCIDIDAE) no município de Porto do Mangue, litoral norte do estado do Rio Grande do Norte

Decapod crustaceans are one of the most important portions of megafaunal of coastal waters, playing a role as modifier of the environment and controlling populations of other organisms. Among the Decapoda, crab (brachyuran) constitutes the dominant macrofauna of mangroves. Among brachyuran is the mangrove crab (Ucides cordatus, Linnaeus, 1763), which represents the main component of the macrofauna of mangroves, particularly in Northern and Northeastern Brazil. In Brazil, its distribution is known from the state of Amapá to the north of Santa Catarina. This species is distinguished by its economic importance, being one of the main fishing resources in Brazil, generating a significant impact on their natural populations. This reduction would result in loss of value to the product, preventing its commercialization. Although it´s great ecological and economic importance, there are few articles about the biological aspects of U. cordatus, mainly in the state of Rio Grande do Norte. This work aimed to study the population dynamics of the mangrove crab, Ucides cordatus (Linnaeus, 1763), in Conchas estuary, Porto do Mangue, northern coast of Rio Grande do Norte. During the period November 2009 to October 2010 the crabs were collected monthly, obeying predetermined lunar periods (new moon or full moon) in a mangrove area in Porto do Mangue - RN. With the aid of a steel caliper (0.01 mm) and a precision balance (0.01 g) were measured biometric variables related to the animal's carapace, major propodus chela, width of abdomen (female), length of gonopodium ( males) and total weight. In addition, it was recorded, the gonads and molt stages, for males and females. In total, 476 crabs were collected, with 338 males and 138 females. Males were larger, heavier and in greater proportion than females. The reproductive period for the species in this location was limited during the months November to May, suggesting a change in current environmental legislation for the closure period. Synchrony was observed between the morphological and physiological maturity with females maturing earlier, possibly, a reproductive strategy adopted, compared to the low fishing pressure in the area. The molting period occurred in the dry season peaking in October. The analysis of growth, based on the parameters of von Bertalanffy was calculated using the nonlinear fit using modes (AJMOD). High growth rates for both males (L = 7.54 cm, k = 0.95, t0 =- 00:08; tmax = 4.84) and females (L = 6.50, k = 1 , 2, t0 =- 0008; tmax = 3.28) were found, contrasting with data from the literature, using other techniques. Males had higher asymptotic width size and longevity, but a lower growth constant when compared with females. The estimated age, for males and females, reaching the minimum capture size was 1.82 years and 1.63 years respectively. The size of physiological maturity, when individuals are able to reproduce, was estimated at 1.4 years and 1.05 years, for males and females, respectively. The recruitment period for this species is seasonal, with two peaks of occurrence, one in the rainy season and one in the dry season. This work represented the first effort on understanding the ecology of the mangrove crab, to the northern coast of Rio Grande do Norte. However, further studies on its biology should be undertaken, especially those related to growth, and recruitment, where observed that literature is more scarce

El desarrollo de complejos forestales en América Latina

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Panamá: pobreza y distribución del ingreso en el período 2001-2007

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Mercados de tierras rurales en la República Dominicana

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El mercado vitivinícola mundial y el flujo de inversión extranjera a Chile

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Apertura y cambio estructural de la economía brasileña

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Desarrollo turístico en el Calafate

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Manual de prospectiva y decisión estratégica: bases teóricas e instrumentos para América Latina y el Caribe

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International trade and transport profiles of Latin American countries, year 2000

Presentación (volumen, valor, origen-destino, modos de transporte, costos de fletes-seguros y productos comerciados) El documento consta de dos partes; la primera incluye la Introducción, donde se detalla el alcance y el contenido de la BTI (Base de datos de Transporte Internacional) mantenida por la Unidad de Transporte de CEPAL. Esta Base de datos abarca estadísticas anuales relativas al flujo comercial y de transporte de Argentina, Bolivia, Brasil, Chile, Colombia, Ecuador, México, Paraguay, Perú, Uruguay y Venezuela. Los lectores son informados acerca de los campos de información incluidos en la base de datos y, si están interesados, pueden requerir información estadística específica, caso por caso a la Unidad de Transporte de CEPAL. La segunda parte del documento contiene cuadros detallados y gráficos relativos al valor y volumen de las importaciones y exportaciones de once países latinoamericanos, cubiertos por la BTI. También se incluye información acerca del uso de diferentes modos de transporte, los costos de los fletes y seguros internacionales y los productos comerciados. La información se refiere al año 2000 y está agrupada por los códigos de la Clasificación Uniforme para el Comercio Internacional (CUCI). El documento por el momento, sólo está disponible en inglés.

Experiencias y metodología de la investigación participativa

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Estructura y competitividad de la industria brasileña de bienes de capital

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La dinámica del consumo energético industrial en América Latina y sus implicancias para un desarrollo sostenible

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Tecnología, comercio y calificación en el Brasil: evidencias de datos microeconómicos

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Chile y su política comercial "lateral"

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