Abstract We evaluate how the concentrations of inorganic nutrients and chlorophyll a vary in a heterogeneous area (Equatorial SW Atlantic), covering a gradient from stations closer to the coast to others more distant associated or not with turbid-zone reefs. Vertical temperature (27.9 ± 0.10 °C; mean ± standard deviation) and salinity (36.2 ± 0.14) profles showed that the water column is well mixed (0-30 m depth). The oligotrophic condition was marked by low concentrations of phosphate (0.30 ± 0.22 µM) and dissolved inorganic nitrogen (0.64 ± 0.74 µM). Moreover, dissolved reactive silicon (DSi) was low in most samples (< 2.0 µM), but higher (>10 µM) in nearshore stations, probably related to continental runoff and/or resuspension of the bottom sediments. The pelagic phytoplankton biomass indicated that chlorophyll a (0.25 ± 0.08 µg L-1) was low, positively correlated with light and negatively correlated with nutrients, indicating possible phytoplankton uptake. Chlorophyll a concentrations were lower in stations closer to the coast and higher in some stations near the reefs, indicating that the latter could be more prone to phytoplankton development and depletion of nutrients, especially DSi. Therefore, although oligotrophy is present along this coast, we found some unexpected heterogeneity of nutrient and chlorophyll a distributions, which were probably infuenced by benthic-pelagic coupling due to the presence of extensive reefs, sponge gardens (18-30 m depth), and the proximity to the coast. These results highlight the importance of understanding the heterogeneity of ocean productivity, especially in lesser known low-latitude areas, which showed distinct nutrient and chlorophyll a levels related to the occurrence of tropical reefs that are capable of supporting important fsh stocks and unique biological communities.

The objective of this study was to determine how concentrate supplementation during late third gestation and lactation affects ewe and offspring performance from birth to weaning. Thirty-six ewes and their offspring (n = 32) were used. Eighteen Morada Nova and 18 Santa Inês ewes were artificially inseminated with semen from Dorper ram and distributed in a completely randomized factorial arrangement (2 × 2) consisting of two supplementation levels (5 and 15 g kg-1 of BW) and two breeds (Morada Nova and Santa Inês) or two crosses (Dorper × Morada Nova and Dorper × Santa Inês). The ewes were weighed, their body condition was evaluated during pregnancy, and the weaning weight of the lambs at up to 70 days old was measured. There was no effect of breed or supplementation on the prolificacy or type of birth. The Santa Inês ewes had a faster rate of development, although the weight loss during lactation was lower in the Morada Nova ewes. The weight development of the Dorper × Santa Inês lambs during the maternal-dependent phase was 34 g/100 g higher than that of the other cross, with no difference in the maternal-independent phase. Dorper × Santa Inês lambs gain more weight during the 70 days of development. However, the Dorper × Morada Nova lambs show a better response in terms of production efficiency when comparing the weight of the lambs with the weight of the sheep.

Este artigo aborda as redes sociais relacionadas com o crime organizado no Brasil. A análise apóia-se nos aportes teóricos e metodológicos de dois dos mais importantes movimentos teóricos da sociologia contemporânea: a análise de redes e a nova sociologia econômica. A empreitada analítica guia-se pela hipótese de que a melhor apreensão do crime organizado é aquela que o tome como um processo situado em um continuum que vai da atividade legal até o evento delituoso. Assenta-se sobre a base empírica da narrativa sociológica, fornecida pelos relatórios de operações desenvolvidas pela Polícia Federal nos últimos três anos e por uma pesquisa já concluída sobre as quadrilhas especializadas no roubo a bancos no interior do Nordeste.

This article deals with social networks, directly or indirectly, linked to the organized crime in Brazil today. The analysis is based on the theoretical and methodological contributions of two of the most important theories in contemporary sociology: the analysis of networks and the new economic sociology. This analytic task is guided by the hypothesis that the best way to understand organized crime is one that takes it as a process situated on a continuum that goes from lawful activity to the criminal act. The empiric basis on which this sociological narrative is founded is supplied by the written reports of operations carried out by the Federal Police in the last three years and by a research already concluded on gangs specialized in robbing banks in the countryside of the Brazilian Northeast.

L'article propose une approche des réseaux sociaux liés au crime organisé au Brésil. L'analyse s'appuie sur les apports théoriques et méthodologiques de deux des plus importants mouvements théoriques de la sociologie contemporaine: l'analyse des réseaux et la nouvelle sociologie économique. Cette tâche analytique est guidée par l'hypothèse selon laquelle la meilleure compréhension du crime organisé est celle qui le considère en tant que processus situé dans un continuum qui s'étend de l'activité légale à l'évènement délictueux. Ce travail s'appuie sur la base empirique de la narrative sociologique, fournie par les rapports des enquêtes effectuées par la Police Fédérale au cours des trois dernières années, ainsi que sur les résultats d'une recherche que nous avons développé sur les groupes de braquage de banques à l'intérieur du Nordeste brésilien.

A Nova Sociologia Econômica é a mais promissora reação dentro do campo da Sociologia à investida do "imperialismo disciplinar" da Economia, ocorrida na década de 80. Neste artigo, busca-se traçar um panorama desse rico campo da investigação sociológica contemporânea.

The New Economic Sociology is the most promising reaction of sociology against the "economic imperialism" that happened in the field since the 80's. In this article, we draw an overview of this rich research field of the contemporary social theory.

Dans le champ de la sociologie, la Nouvelle Sociologie Économique est la plus prometteuse réaction face à l'investissement de l'«impérialisme disciplinaire» de l'économie dans les années 80. Dans cet article, on essaye de tracer un panorama de ce riche champ d'investigation sociologique contemporain.