Abstract The Cananéia-Iguape Estuarine-Lagoon Complex (CIELC) is an extremely productive coastal ecosystem. It encloses the Valo Grande channel, built 160 years ago, which introduces water from the Ribeira River directly into the estuarine system, contributing to important biogeochemical changes in the region. Many nutrients arrive at the estuary through this channel, as well as metals and other slightly soluble elements that become part of the sediments. This study aims to evaluate the processes that govern the distribution of rare earth elements (REE) in the sediments of the complex by using fractionation patterns, anomalies, and the geochemical signature of minerals to evaluate sources, natural levels, and the possible anthropogenic forcing to which CIELC is subjected. ∑REE* ranged from 14.2 to 285 mg kg -1 and showed a distribution related to depositional/textural characteristics influenced by the regional and local lithological setting and a possible contamination. The REE/Al ratio indicated enrichment in the sea adjacent to the estuary and at stations in the Ribeira River and Valo Grande. While the Hf/Al ratio indicated natural enrichment related to the presence of heavy minerals in most of these stations, this ratio fails to justify enrichment at some stations in the northern part of the estuary and the Ribeira River. Fractionation patterns and anomalies allowed us to identify the main heavy minerals related to REE enrichment at CIELC. Cerium (Ce) anomalies showed a possible relation with biologically mediated Ce +3 to Ce +4 oxidation processes in the most productive areas of the estuary. Europium (Eu) anomalies were strongly associated with different mineral assemblies in several CIELC sectors. Abundance, fractionation patterns, and REE anomalies corroborate the categorization of CIELC sediments as part of a pristine system in its southern region and as subject to anthropogenic influences in its northern area.

Foi avaliada a composição química e percentual de adequação das dietas coletadas por meio da porção em duplicata de 36 servidores do Instituto Nacional de Pesquisas da Amazônia (INPA). De acordo com os resultados obtidos, verificou-se uma diversificação de alimentos frequentemente consumidos, dentre eles: açúcar (91,7%), arroz (80,6%), café (77,8%), leite (72,3%), carne bovina e pão (63,9%), farinha de mandioca (58,4%), batata inglesa (55,6%), feijão (50,04%), aves (38,9%), banana, cenoura e embutidos (33,4%), ovo, refrigerantes e tomate (30,6%). Considerando as recomendações nutricionais para a faixa etária de 25 a 50 anos, as adequações calóricas foram 40% e 52,7% para homens e mulheres respectivamente, protéica 76,4% (homens) e 96,3% (mulheres). Os minerais Ca, Mg e Zn (homens) apresentaram adequação inferior a 50%, enquanto que o Fe apresentou adequação de 89,1% (homens) e 59.4% (mulheres). Os minerais Na, Cu, Cl, Cr e I apresentaram valores acima do recomendado em ambos os sexos. Apesar da grande variedade de alimentos ingeridos por esta população, verificou-se valores limitantes para a maioria dos nutrientes, independentemente do sexo. Mesmo pertencendo a um nível sócio-cultural mais privilegiado, fica patente a importância da orientação alimentar a esse grupo populacional, pois é um dos pontos principais no que concerne as condições de saúde e nutrição da população.

The chemical composition of the duplicate food collections obtained from 36 servers of the National Institute of Researches of Amazônia (INPA) was evaluated and as percentage of recommended intake. The most frequently food consumed they were: sugar (91.7%), rice (80.6%), coffee (77.8%), milk (72.3%), bovine meat and bread (63.9%), cassava flour (58.4%), potato (55.6%), bean (50.0%), birds (38.9%), banana, carrot and sausages (33.4%), egg, sodas and tomato (30.6%). The results obtained showed the caloric deficiency of 40% and 52,7% respectively for adult men and adult women (25 to 50 years), protein of 76,4% (men) and 96,3% (women). The minerals Ca, Mg and Zn (men) were deficient whit an adequacy of about 50%. When compared with the recommended intakes, Fe was deficient for the adult women (59.4%). The minerals Na, Cu, Cl, Cr and I values were very high. Although of the great variety of foods ingested by this population, it was verified values are near the lowest limited set by RDA for most of the nutrients. Same belonging at a more privileged socio-economic living conditions, it is patent the importance of the alimentary orientation to that population group, because it is one of the main points in what it concerns the conditions of health and nutrition of the population.